阅读说明：本技术 一种基于等光程的可控型面光源 (Aplanatic-based controllable surface light source ) 是由 沈国野 于 2019-11-06 设计创作，主要内容包括：本发明公开了一种基于等光程的可控型面光源,包括透镜以及位于透镜后方的若干个光源单元；每个光源单元包括发光体以及反射发光体所发射光线的反光杯,反光杯具有虚拟回转轴,穿过所述虚拟回转轴的任一构造平面切割反光杯,其交汇线均能将发光体在该构造平面内发射光线等光程反射,所述交汇线由其构造椭圆上所截取,所述发光体设在虚拟回转轴上且与各构造椭圆的焦点重合。该面光源具有成像清晰,无色散,照明效果佳的特点,整体功能完善,实用性强。(The invention discloses an aplanatic-based controllable area light source, which comprises a lens and a plurality of light source units positioned behind the lens; each light source unit comprises a luminous body and a reflection cup for reflecting light emitted by the luminous body, the reflection cup is provided with a virtual rotating shaft, any structural plane passing through the virtual rotating shaft cuts the reflection cup, the intersection line can reflect the light emitted by the luminous body in the structural plane in an aplanatism way, the intersection line is cut from the structural ellipse of the luminous body, and the luminous body is arranged on the virtual rotating shaft and is superposed with the focus of each structural ellipse. The area light source has the characteristics of clear imaging, no dispersion and good illumination effect, and has complete overall functions and strong practicability.)

1. A controllable area light source based on aplanatic is characterized by comprising a lens and a plurality of light source units positioned behind the lens; each light source unit comprises a luminous body and a reflection cup for reflecting light emitted by the luminous body, the reflection cup is provided with a virtual rotating shaft, any structural plane passing through the virtual rotating shaft cuts the reflection cup, the intersection line can reflect the light emitted by the luminous body in the structural plane in an aplanatism way, the intersection line is cut from the structural ellipse of the luminous body, and the luminous body is arranged on the virtual rotating shaft and is superposed with the focus of each structural ellipse.

2. The aplanatic-based controllable area light source as claimed in claim 1, wherein the light source units respectively form virtual light emitting points between the lens and the light source units, the virtual light emitting points are distributed in a rectangular array, the boundaries between two adjacent virtual light emitting points are overlapped, and the boundaries between two adjacent virtual light emitting points are overlapped.

3. An aplanatic-based controllable area light source as claimed in claim 1, wherein the light source units form virtual light emitting points between the lens and the light source units, respectively, and the virtual light emitting points are distributed in a dot shape and overlap each other.

4. An aplanatic-based controllable area light source as claimed in any one of claims 1 to 3, wherein the light emitter is an LED light source.

5. An aplanatic-based controllable area light source as claimed in claim 4, wherein the lens is a plano-convex lens.

Technical Field

The present invention relates to a light source, and more particularly, to a controllable surface light source based on an aplanatic light.

Background

Matrix lamp sets are already available on the market, a plurality of LED lamp beads distributed in a rectangular array are adopted in the matrix lamp sets as light emitting sources and are arranged closely, light guide columns are arranged right in front of the light emitting sources to converge light onto a virtual light emitting surface, and the upper and lower adjacent edges and the left and right adjacent edges of each point light source are overlapped to form a rectangular combined light source, and the rectangular combined light source is amplified and emitted by a lens to realize the irradiation of a rectangular light emitting area.

However, such matrix lamp sets have a number of disadvantages: 1. the lamp beads are arranged closely, the energy density is high, the heat productivity in a unit is large, and the service life of the light source is shortened; 2. the light source emitted by the lamp bead needs to be guided into the light guide column, and the light loss is large and the utilization rate is not high on the medium intersection surface; 3. the light guide column is adopted for guiding light, and paths of different light beams generated by a single light source are different, so that the light beams finally emitted from the light guide column generate dispersion due to different optical paths, the light area finally emitted is easy to distort, and the overall effect is poor.

Accordingly, the invention provides a controllable surface light source based on an aplanatic light path.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a controllable surface light source based on an aplanatic optical path, wherein the surface light source has the characteristics of clear imaging, no dispersion and good illumination effect.

In order to solve the technical problem, the invention aims to realize that: the invention relates to an aplanatic-based controllable area light source, which comprises a lens and a plurality of light source units positioned behind the lens; each light source unit comprises a luminous body and a reflection cup for reflecting light emitted by the luminous body, the reflection cup is provided with a virtual rotating shaft, any structural plane passing through the virtual rotating shaft cuts the reflection cup, the intersection line can reflect the light emitted by the luminous body in the structural plane in an aplanatism way, the intersection line is cut from the structural ellipse of the luminous body, and the luminous body is arranged on the virtual rotating shaft and is superposed with the focus of each structural ellipse.

By adopting the principle, each light-emitting source adopts a single light-reflecting cup to reflect and collect emitted light, and the emitted light is reflected and converged to the same virtual light-emitting point to form a virtual light source, so that the distance between the original light-emitting sources is increased, the capacity density is reduced, the heat productivity in a unit is small, and the service life of the light source is prolonged;

and each reflecting cup adopts an elliptical aplanatic mode, the original luminous source is arranged at the focal position of an ellipse, all light rays collected by the original luminous source are emitted in a light path, and the light rays are diffused by a lens without distortion and dispersion, so that the illuminating area is clear, and the using effect is good.

The invention is further configured to: the light source units respectively form virtual light-emitting points positioned between the lens and the light source units, the virtual light-emitting points are distributed in a rectangular array, the boundaries between two adjacent upper and lower virtual light-emitting points are overlapped, and the boundaries between two adjacent left and right virtual light-emitting points are overlapped.

The invention is further configured to: the light source units respectively form virtual light-emitting points positioned between the lens and the light source units, and the virtual light-emitting points are distributed in a point shape and are mutually overlapped.

The invention is further configured to: the luminous body is an LED light source.

The invention is further configured to: the lens is a plano-convex lens.

In conclusion, the invention has the following beneficial effects:

1. each luminous source adopts a single reflection cup to reflect and collect the emitted light and converge the light to the same virtual luminous point through reflection to form a virtual light source, so that the distance between the original luminous sources is increased, the capacity density is reduced, the heat productivity in a unit is small, and the service life of the light source is prolonged;

2. each reflecting cup adopts an elliptical aplanatic mode, the original luminous source is arranged at the focal position of an ellipse, all light rays collected by the original luminous source are emitted in a light path, and the light rays are diffused by a lens without distortion and dispersion, so that the irradiated light area is clear and the using effect is good;

3. a light guide column is not needed to guide the emitting direction of the light source, so that a large amount of loss caused by the fact that light rays enter a medium is avoided, and the light efficiency is improved;

4. virtual luminous points generated by a plurality of light sources are distributed in a rectangular array, and are not overlapped with each other, so that the effect of simulating a rectangular light source is achieved, and a high-brightness and clear rectangular light area is formed after the virtual luminous points are diffused by a lens, so that the irradiation effect is good;

5. virtual luminous points generated by a plurality of light sources are converged by adopting a reflective cup with a proper reflective angle to form a secondary virtual luminous point which is high and converged into a whole, and the secondary virtual luminous point is diffused by a lens to improve the illumination intensity and illuminate brightly.

Drawings

FIG. 1 is a schematic diagram of a light source unit embodying the present invention;

FIG. 2 is a schematic diagram of the present invention for embodying the principle of a light source unit;

FIG. 3 is a reflection diagram of the present invention for embodying a light source unit;

FIG. 4 is a schematic structural diagram of a light source unit for embodying the present invention in a single-row array state;

FIG. 5 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 7 is a schematic view of a virtual light-emitting point arrangement according to a first embodiment of the present invention;

fig. 8 is a schematic view of an arrangement of virtual light-emitting points according to a second embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the novel teachings of the present invention, preferred embodiments of the present invention are described below with reference to specific examples, but it should be understood that these descriptions are only intended to further illustrate the features and advantages of the present invention, and not to limit the patent claims of the present invention. 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 invention will be further described with reference to the accompanying drawings and preferred embodiments.