阅读说明：本技术 一种光疗仪器及其制作方法 (Phototherapy instrument and manufacturing method thereof ) 是由 魏伟 易斌 郭庆霞 李现强 于 2020-04-02 设计创作，主要内容包括：本发明提供了一种光疗仪器及其制作方法,包括柔性基底、LED光源、位于LED光源四周以及柔性基底上的第一布拉格反射结构、位于LED光源和第一布拉格反射结构顶部的多个第二布拉格反射结构,以及位于多个第二布拉格反射结构顶部的透明混光层。由于光疗仪器具有透明混光层,因此,提高了LED光源的均匀性,使得光疗仪器表面不可见点光源,提高了佩戴的舒适感,并使得光疗更加可靠有效,提高了光疗的一致性。(The invention provides a phototherapy instrument and a manufacturing method thereof, and the phototherapy instrument comprises a flexible substrate, a L ED light source, a first Bragg reflection structure, a plurality of second Bragg reflection structures and a transparent light mixing layer, wherein the first Bragg reflection structures are positioned on the periphery of a L ED light source and on the flexible substrate, the plurality of second Bragg reflection structures are positioned on the tops of a L ED light source and the first Bragg reflection structure, and the transparent light mixing layer is positioned on the tops of the plurality of second Bragg reflection structures.)

1. A phototherapy apparatus, comprising:

a flexible substrate;

an L ED light source located on a surface of the flexible substrate;

a first bragg reflective structure located around said L ED light source and on said flexible substrate;

a plurality of second Bragg reflecting structures located on top of the L ED light source and the first Bragg reflecting structure;

a transparent light mixing layer positioned on top of the plurality of second Bragg reflection structures;

the first Bragg reflection structure is used for reflecting light of a wavelength band required by a phototherapy device in the light emitted by the L ED light source and transmitting light of other wavelength bands in the light emitted by the L ED light source, the second Bragg reflection structure is used for transmitting light of a wavelength band required by the phototherapy device in the light emitted by the L ED light source and reflecting light of other wavelength bands in the light emitted by the L ED light source, and different second Bragg reflection structures reflect light of different wavelength bands;

the first Bragg reflection structure and the second Bragg reflection structure respectively comprise a plurality of layers of reflection film layers, and the number of the layers of the reflection film layers in the first Bragg reflection structure and the second Bragg reflection structure, the thickness and the reflectivity of each layer of the reflection film layers are preset according to the wavelength and the required reflectivity of light in a wave band required by the phototherapy instrument.

2. A phototherapy instrument as recited in claim 1, further comprising:

and the flexible light diffusion light mixing layer is positioned on the top of the transparent light mixing layer.

3. A phototherapy instrument as recited in claim 1, further comprising:

and the transparent protective layer is positioned on the top of the flexible light diffusion light mixing layer.

4. A phototherapy instrument as claimed in claim 1, wherein the transparent light mixing layer has a micro-nano structured light mixing layer on a side facing the second bragg reflective structure.

5. A phototherapy instrument as claimed in claim 2, wherein the flexible light diffusing light mixing layer is made of a flexible material mixed with a light diffusing agent; the light diffusant comprises an inorganic light diffusant and a high molecular organic light diffusant; the flexible material comprises PMMA, PDMS, TPU or silica gel.

6. A phototherapy instrument as claimed in claim 5, wherein the flexible material has a hardness of less than or equal to 80.

7. A phototherapy instrument as claimed in claim 4, wherein the micro-nano structured light mixing layer comprises micro-and/or nano-scale microstructures comprising striations and ravines.

8. A phototherapy instrument as claimed in claim 1, characterized in that the material of the transparent light mixing layer comprises at least PMMA, PDMS, TPU, TPE, PU and silicone.

9. A phototherapy instrument as claimed in claim 1, wherein the thickness of the transparent light mixing layer is greater than 1.5mm and less than 2.2 mm.

10. A method of making a phototherapy apparatus, comprising:

providing a flexible substrate;

forming L ED light sources on the surface of the flexible substrate;

forming a first bragg reflective structure around the L ED light source and on the flexible substrate to reflect light of a desired wavelength band of light emitted by the L ED light source and transmit light of other wavelength bands of light emitted by the L ED light source through the first bragg reflective structure;

forming a plurality of second bragg reflective structures on top of the L ED light source and the first bragg reflective structure to transmit light of a desired wavelength band of light emitted by the L ED light source through the second bragg reflective structures and to reflect light of other wavelength bands of light emitted by the L ED light source;

forming a transparent light mixing layer on top of the plurality of second Bragg reflection structures;

the first Bragg reflection structure and the second Bragg reflection structure respectively comprise a plurality of reflection film layers, and the number, the thickness and the reflectivity of the reflection film layers in the first Bragg reflection structure and the second Bragg reflection structure are preset according to the wavelength of light with a required waveband and the required reflectivity.

Technical Field

The invention relates to the technical field of phototherapy, in particular to a phototherapy instrument and a manufacturing method thereof.

Background

The red light therapeutic instrument irradiates human body with red light to make it and human body cell play special photochemical role, and can enhance cell metabolism, promote cell synthesis, enhance cell regeneration, improve blood circulation and raise immunity of body.

Although wearable phototherapy instruments such as red phototherapy instrument can adopt emitting red light emitting Diode (L height emitting Diode, L ED) as the light source, arrange individual L ED lamp pearl as the light source on flexible substrate promptly, when L ED lamp pearl is luminous, can form a bright spot, give other people the impression, some local light is very strong, some local light is very weak, and, many people can think, the local treatment of light intensity is good, the local treatment of light weak is not good, lead to user's use to experience relatively poor.

Disclosure of Invention

In view of this, the present invention provides a phototherapy apparatus and a method for manufacturing the same, so as to improve the uniformity of light emitted from the phototherapy apparatus.

In order to achieve the purpose, the invention provides the following technical scheme:

a phototherapy apparatus comprising:

a flexible substrate;

an L ED light source located on a surface of the flexible substrate;

a first bragg reflective structure located around said L ED light source and on said flexible substrate;

a plurality of second Bragg reflecting structures located on top of the L ED light source and the first Bragg reflecting structure;

a transparent light mixing layer positioned on top of the plurality of second Bragg reflection structures;

the first Bragg reflection structure is used for reflecting light of a wavelength band required by a phototherapy device in the light emitted by the L ED light source and transmitting light of other wavelength bands in the light emitted by the L ED light source, the second Bragg reflection structure is used for transmitting light of a wavelength band required by the phototherapy device in the light emitted by the L ED light source and reflecting light of other wavelength bands in the light emitted by the L ED light source, and different second Bragg reflection structures reflect light of different wavelength bands;

the first Bragg reflection structure and the second Bragg reflection structure respectively comprise a plurality of layers of reflection film layers, and the number of the layers of the reflection film layers in the first Bragg reflection structure and the second Bragg reflection structure, the thickness and the reflectivity of each layer of the reflection film layers are preset according to the wavelength and the required reflectivity of light in a wave band required by the phototherapy instrument.

Optionally, the method further comprises:

and the flexible light diffusion light mixing layer is positioned on the top of the transparent light mixing layer.

Optionally, the method further comprises:

and the transparent protective layer is positioned on the top of the flexible light diffusion light mixing layer.

Optionally, a micro-nano structure light mixing layer is arranged on one side of the transparent light mixing layer facing the second bragg reflection structure.

Optionally, the flexible light-diffusing light-mixing layer is made of a flexible material mixed with a light-diffusing agent; the light diffusant comprises an inorganic light diffusant and a high molecular organic light diffusant; the flexible material comprises PMMA, PDMS, TPU or silica gel.

Optionally, the flexible material has a hardness of less than or equal to 80.

Optionally, the micro-nano structure light mixing layer comprises micro-scale and/or nano-scale microstructures, and the microstructures comprise stripes and ravines.

Optionally, the material of the transparent light mixing layer at least comprises PMMA, PDMS, TPU, TPE, PU and silica gel.

Optionally, the thickness of the transparent light mixing layer is greater than 1.5mm and less than 2.2 mm.

A method of making a phototherapy apparatus, comprising:

providing a flexible substrate;

forming L ED light sources on the surface of the flexible substrate;

forming a first bragg reflective structure around the L ED light source and on the flexible substrate to reflect light of a desired wavelength band of light emitted by the L ED light source and transmit light of other wavelength bands of light emitted by the L ED light source through the first bragg reflective structure;

forming a plurality of second bragg reflective structures on top of the L ED light source and the first bragg reflective structure to transmit light of a desired wavelength band of light emitted by the L ED light source through the second bragg reflective structures and to reflect light of other wavelength bands of light emitted by the L ED light source;

forming a transparent light mixing layer on top of the plurality of second Bragg reflection structures;

the first Bragg reflection structure and the second Bragg reflection structure respectively comprise a plurality of reflection film layers, and the number, the thickness and the reflectivity of the reflection film layers in the first Bragg reflection structure and the second Bragg reflection structure are preset according to the wavelength of light with a required waveband and the required reflectivity.

Compared with the prior art, the technical scheme provided by the invention has the following advantages:

the number, thickness and reflectivity of the reflecting film layers in the first Bragg reflecting structure and the second Bragg reflecting structure can be preset according to the wavelength and reflectivity of light of a wave band required by the phototherapy instrument, so that light of a required wave band in light emitted by the L ED light source and light of other wave bands in light emitted by the L ED light source can be reflected by the first Bragg reflecting structure located around the L ED light source, light of a required wave band in light emitted by the L ED light source and light of other wave bands in light emitted by the L ED light source can be transmitted by the plurality of second Bragg reflecting structures located at the top of the L ED light source, the half-wave width of the emitted light can be reduced, the light emitted by the phototherapy instrument is light of the required wave band, namely, the phototherapy instrument is effective, the influence of light of ineffective wavelength on the light power is avoided, the measurement of the effective power of the phototherapy instrument is more accurate, the phototherapy instrument is more reliable and effective, and the consistency of phototherapy is improved.

In addition, the uniformity of L ED light sources is improved through the transparent light mixing layer, so that light sources cannot be seen on the surface of the phototherapy instrument, the wearing comfort is improved, the phototherapy is more reliable and effective, the consistency of the phototherapy is improved, the design is simple, the future use is wide, and the application market is huge.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a phototherapy apparatus according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a phototherapy apparatus according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of another phototherapy apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a flexible light-diffusing light-mixing layer according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a micro-nano structure light mixing layer provided in an embodiment of the present invention;

fig. 6 is a flowchart of a method for manufacturing a phototherapy apparatus according to an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the present invention provides a phototherapy apparatus for performing phototherapy, as shown in fig. 1 and fig. 2, the phototherapy apparatus includes a flexible substrate 1, L ED light sources 2 located on a surface of the flexible substrate 1, a first bragg reflection structure 3 located around the L ED light sources 2 and on the flexible substrate 1, a plurality of second bragg reflection structures, such as two second bragg reflection structures 4 and 5, located on top of the L ED light sources 2 and the first bragg reflection structure 3, and a transparent light mixing layer 6 located on top of the plurality of second bragg reflection structures.

The first bragg reflection structure 3 is used for reflecting L light of a wavelength band required by a phototherapy device in the light emitted by the ED light source and transmitting L light of the light emitted by the ED light source in other wavelength bands, the second bragg reflection structures 4 and 5 are used for transmitting L light of the light emitted by the ED light source in the desired wavelength band and reflecting L light of the light emitted by the ED light source in other wavelength bands, and the wavelength bands of the light reflected by the different second bragg reflection structures are different.

And, the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 each include a plurality of reflection film layers, and the number of layers of the reflection film layers in the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5, the thickness and the reflectivity of each reflection film layer are preset according to the wavelength of light in a wavelength band required by the phototherapy apparatus and the reflectivity required by the bragg reflection structures.

In the embodiment of the present invention, since the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 each include a plurality of reflection film layers, the number of layers, the thickness of each layer, and the reflectivity of each layer of the reflection film layers in the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 may be preset according to the wavelength of light in a wavelength band required by the phototherapy apparatus and the reflectivity required by the bragg reflection structures, so that light in a required wavelength band among light emitted by the L ED light source 2 and light in other wavelength bands among light emitted by the L ED light source 2 may be reflected by the first bragg reflection structure 3 located around the L ED light source 2, light in a required wavelength band among light emitted by the L ED light source 2 may be transmitted by the plurality of second bragg reflection structures 4 and 5 located on the top of the L ED light source 2, and light in other wavelength bands among light emitted by the L ED light source 2 may be reflected, and thus the half-wave width of the emitted light may be reduced, so that light emitted by the phototherapy apparatus is all light in a required wavelength band, that.

In addition, because the phototherapy instrument in the embodiment of the invention comprises the transparent light mixing layer 6, the uniformity of the L ED light source is improved, a point light source cannot be seen on the surface of the phototherapy instrument, the wearing comfort is improved, the phototherapy is more reliable and effective, the consistency of the phototherapy is improved, the design is simple, the phototherapy instrument is widely used in the future, and the phototherapy instrument has a huge application market and the like.

It should be noted that the L ED light source 2 in the embodiment of the present invention may be soldered on a metal substrate, and power supply of the L ED light source 2 is implemented by a driving circuit connected to the metal substrate to drive the L ED light source 2 to emit light, alternatively, the L ED light source 2 is L ED packaged in a chip, and the L ED light source 2 has a lambertian optical distribution.

It should be further noted that, as shown in fig. 2, the first bragg reflection structure 3 is located at L peripheries of the ED light source 2, and a bottom of the first bragg reflection structure 3 is located on the flexible substrate 1, or the bottom of the first bragg reflection structure 3 may be located on the flexible substrate 1 partially and located in a region where the L ED light source 2 is not located on the metal substrate.

Optionally, in the embodiment of the present invention, the material of the transparent light mixing layer 4 at least includes PMMA (polymethyl methacrylate), PDMS (polydimethylsiloxane), TPU (Thermoplastic polyurethanes), TPE (Thermoplastic Polyurethane elastomer), Thermoplastic elastomer, PU (Polyurethane), and silica gel, where the transparent light mixing layer 6 mixes light in a manner of mixing light with natural light, optionally, the thickness of the transparent light mixing layer 6 is greater than 1.5mm and less than 2.2mm, and since the phototherapy apparatus in the embodiment of the present invention includes the transparent light mixing layer 6, light emitted from the dotted L ED light sources 2 is mixed in the layer, so that light emitted from the surface of the transparent light mixing layer 6 is relatively uniform, and the light emitted from the dotted L ED light sources 2 does not show one dotted L ED light source, which appears as a planar light source.

Optionally, as shown in fig. 1, a phototherapy apparatus provided in an embodiment of the present invention further includes:

and a transparent protective layer 7 positioned on top of the transparent light mixing layer 6, the transparent protective layer 7 being used for protecting the second bragg reflection structures 4 and 5.

It should be noted that, in the embodiment of the present invention, the transparent protection layer 7 is made of a transparent material, that is, the transparent protection layer 7 transmits light emitted from the L ED light source 2, in the embodiment of the present invention, the material of the transparent protection layer 7 at least includes PMMA, PDMS, TPU, silica gel, and the like.

Optionally, in the embodiment of the present invention, the plurality of second bragg reflection structures include two second bragg reflection structures 4 and 5, and the two second bragg reflection structures 4 and 5 are sequentially located on top of the L ED light source 2.

Optionally, the flexible substrate 1 is made of silicon gel or PET (Polyethylene terephthalate and ethylene glycol) material, the L ED light source 2 is a red light L ED light source, and based on this, the phototherapy apparatus including the L ED light source 2 is a red phototherapy apparatus, optionally, the peak wavelength of the red light L ED light source 2 is 630nm, the half-wave width is greater than or equal to 14nm, the wavelength range of the reflected light of the first bragg reflection structure 3 is 630 ± 4nm, the plurality of second bragg reflection structures include two second bragg reflection structures 4 and 5, the wavelength band of the reflected light of one second bragg reflection structure 4 is 590nm to 626nm, and the wavelength band of the reflected light of the other second bragg reflection structure 5 is 634nm to 660 nm.

In the embodiment of the invention, the thickness of each reflective film layer in the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 is less than 150nm, and the error between the designed thickness and the actual thickness is within 5nm, the number of the reflective film layers in the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 is greater than or equal to 6, and the reflectivity of the reflective film layers in the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 to the light in the reflective waveband thereof is greater than 50%, preferably greater than 60%, so that the half-wave width of the red light emitted by the L ED light source 2 is less than or equal to 10nm after the red light passes through the two second bragg reflection structures 4 and 5 on the top of the transparent light mixing layer 4, and the light in the waveband emitted by the red light therapeutic apparatus is required effective light.

The thickness of each of the reflective film layers of the first bragg reflective structure 3 and the second bragg reflective structures 4 and 5 is calculated by the following formula, n is λ/4, n is the refractive index of the reflective film layer, h is the thickness of the reflective film layer, and λ is the wavelength of the reflected light to be reflected.

In the embodiment of the present invention, each of the first bragg reflection structure 3 and the second bragg reflection structures 4 and 5 is formed by laminating at least two transparent film layers having different refractive indexes. Based on this, the reflectivity of the entire bragg reflection structure can be adjusted by adjusting the reflectivity of each film layer.

Further, in the embodiment of the present invention, the plurality of reflective film layers in the first bragg reflective structure 3 and the second bragg reflective structures 4 and 5 respectively reflect light in a plurality of wavelength bands, that is, different reflective film layers may reflect light in different wavelengths, so that the bragg reflective structure reflects light in a desired wavelength band and transmits light in other wavelength bands, or transmits light in a desired wavelength band and reflects light in other wavelength bands.

Optionally, as shown in fig. 3, the phototherapy apparatus provided in the embodiment of the present invention further includes:

and the flexible light diffusion light mixing layer 8 is positioned on the transparent light mixing layer 6 and the transparent protective layer 7.

As shown in fig. 4, the flexible light-diffusing light-mixing layer 8 is made of a flexible material 81 mixed with a light-diffusing agent 80. The light diffusing agent 80 comprises an inorganic light diffusing agent and a high molecular organic light diffusing agent, and optionally, the light diffusing agent 80 is a micron-level light diffusing agent or a nanometer-level light diffusing agent or a micro-nanometer-level light diffusing agent. The flexible material 81 includes PMMA, PDMS, TPU, TPE, PU and silicone. Wherein the hardness of PMMA, PDMS, TPU, TPE, PU and silica gel is less than or equal to 80.

In the embodiment of the invention, the phototherapy instrument comprises the transparent light mixing layer 6 and the flexible light diffusion light mixing layer 8, so that the light emitting efficiency can be ensured, the point-shaped light source is not easy to see, and the light emitting uniformity of the phototherapy instrument is improved.

Optionally, as shown in fig. 3, the transparent light mixing layer 6 has a micro-nano structure light mixing layer 9 on the side facing the second bragg reflection structure 5.

As shown in fig. 5, the micro-nano structure light mixing layer 9 includes micro-scale and/or nano-scale microstructures 90, and the microstructures 90 include striations and ravines. Optionally, in the embodiment of the present invention, the microstructure 90 is formed by etching the transparent light mixing layer 6 through wet etching or dry etching, and the micro-nano structure light mixing layer 9 is formed on one side of the transparent light mixing layer 6 facing the first bragg reflection structure 3.

In the embodiment of the invention, the light beam is diffused by reflection, refraction and diffraction of the micro-structure 90 in the micro-nano structure light mixing layer 9, so that the light beam is uniformly diffused. When the size of the microstructure 90 is micron-sized, it primarily diffuses the beam by refraction and reflection; when the microstructure 90 is nano-sized, it mainly uses multi-slit or single slit diffraction to diffuse light beam, at this time, the distance of the stripe or gully is nano-sized, the distance is very small, and the diffused light beam has the characteristics of small energy loss, good diffusion effect and low diffusion structure thickness.

The embodiment of the invention also provides a preparation method of the phototherapy apparatus, as shown in fig. 6, the method comprises the following steps:

s101: providing a flexible substrate;

optionally, the material of the flexible substrate is silicone or PET (Polyethylene terephthalate, terephthalic acid and ethylene glycol) material.

S102, forming L ED light source on the surface of the flexible substrate;

specifically, a cathode, a light-emitting layer, and an anode may be sequentially formed on the surface of the flexible substrate, and the light-emitting layer may be caused to emit light by applying a voltage to the cathode and the anode.

S103, forming a first Bragg reflection structure on the flexible substrate and around the L ED light source so as to reflect L light of the light emitted by the ED light source in a required waveband and transmit light of other wavebands in the light emitted by the L ED light source through the first Bragg reflection structure;

forming a plurality of second Bragg reflection structures on top of the L ED light source and the first Bragg reflection structure to transmit light of a desired wavelength band among light emitted by the L ED light source and reflect light of other wavelength bands among light emitted by the L ED light source through the second Bragg reflection structures S104;

specifically, a slit coating mode, a magnetron sputtering mode, a micro-nano lamination co-extrusion mode or an atomic layer growth mode can be adopted to form the first Bragg reflection structure and the second Bragg reflection structure.

The first Bragg reflection structure and the second Bragg reflection structure respectively comprise a plurality of layers of reflection film layers, and the number of the reflection film layers in the first Bragg reflection structure and the second Bragg reflection structure, the thickness and the reflectivity of each reflection film layer are preset according to the wavelength of light with a wave band required by the phototherapy instrument and the reflectivity required by the Bragg reflection structure.

S105: forming a transparent light mixing layer on the tops of the plurality of second Bragg reflection structures;

in the embodiment of the invention, the material of the transparent light mixing layer at least comprises PMMA, PDMS, TPU, TPE, PU and silica gel. The transparent light mixing layer is used for mixing light in a mode of mixing light naturally. Optionally, the thickness of the transparent light mixing layer is greater than 1.5mm and less than 2.2 mm.

The number, thickness and reflectivity of the reflecting film layers in the first Bragg reflecting structure and the second Bragg reflecting structure can be preset according to the wavelength and reflectivity of light of a wave band required by the phototherapy instrument, so that light of a required wave band in light emitted by the L ED light source and light of other wave bands in light emitted by the L ED light source can be reflected by the first Bragg reflecting structures located on the peripheral side surfaces of the L ED light source, light of a required wave band in light emitted by the L ED light source and light of other wave bands in light emitted by the L ED light source can be transmitted by the plurality of second Bragg reflecting structures located on the tops of the L ED light source and the first Bragg reflecting structure, the half-wave width of emitted light can be reduced, the light emitted by the phototherapy instrument is light of a required wave band, namely, the light of an invalid wavelength is all effective light, the influence of the light of the invalid wavelength on the light power is avoided, the measurement of the effective power of the phototherapy instrument is more accurate, the phototherapy instrument is more reliable and effective, the consistency of the phototherapy instrument is improved, the structure of the phototherapy instrument, the application cost is low, and the application prospect is wide.

In addition, the uniformity of L ED light sources is improved through the transparent light mixing layer, so that light sources cannot be seen on the surface of the phototherapy instrument, the wearing comfort is improved, the phototherapy is more reliable and effective, the consistency of the phototherapy is improved, the design is simple, the future use is wide, and the application market is huge.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.