阅读说明：本技术 一种入光准直面加圆柱形条纹的厚壁件光学系统 (Optical system of thick-wall part with light incidence collimation surface and cylindrical stripes ) 是由 楼木 于 2020-05-27 设计创作，主要内容包括：本发明提供一种入光准直面加圆柱形条纹的厚壁件光学系统,包括光源和厚壁件,厚壁件有入光准直面、左侧拔模角倾斜面、右侧拔模角倾斜面、左侧侧壁、右侧侧壁、前发光面、倒角一、倒角二、倒角三、倒角四、挖孔处光学面,所述入光准直面上有圆柱形条纹,焦点处光源发出光线经入光准直面上圆柱形条纹调整出光方向并扩散后来到前发光面出射,填补因制造加工工艺精度限制产生的倒角及拔模角带来的暗区问题,提高厚壁件垂直方向上均匀性,进而能设计更厚造型厚壁件；挖孔处光学面的圆柱形条纹能提高厚壁件水平方向上均匀性；同时使中心区域光能分布和两侧趋于一致,提高系统光学均匀性,在保证满足法规前提下减少不必要光能效浪费。(The invention provides an optical system of a thick-wall part with an incident light collimation surface and cylindrical stripes, which comprises a light source and the thick-wall part, wherein the thick-wall part is provided with an incident light collimation surface, a left drawing angle inclined surface, a right drawing angle inclined surface, a left side wall, a right side wall, a front light emitting surface, a first chamfer angle, a second chamfer angle, a third chamfer angle, a fourth chamfer angle and an optical surface at a hole digging position; the cylindrical stripes of the optical surface at the digging hole can improve the uniformity of the thick-walled part in the horizontal direction; meanwhile, the light energy distribution and two sides of the central area tend to be consistent, the optical uniformity of the system is improved, and unnecessary waste of light energy effect is reduced on the premise of meeting the regulations.)

1. The utility model provides a thick wall spare optical system of light collimation face plus cylindrical stripe, includes light source (1) and thick wall spare (8), light source (1) is located the focus position of thick wall spare (8), thick wall spare (8) include light collimation face (2), left side draft angle inclined plane (31), right side draft angle inclined plane (32), left side lateral wall (41), right side lateral wall (42), preceding luminous surface (5), chamfer one (61), chamfer two (62), chamfer three (63), chamfer four (64) and dig hole department optical surface (9), light collimation face (2) are located the income light end of thick wall spare (8), and preceding luminous surface (5) are located the light-emitting end of thick wall spare (8), left side draft angle inclined plane (31) and left side lateral wall (41) are located the left part of thick wall spare (8), and right side draft angle inclined plane (32) and right side lateral wall (42) are located the right part of thick wall spare (8), chamfer (61) and chamfer two (62) are located left side draft angle inclined plane (31) and right side draft angle inclined plane (32) front end respectively, chamfer three (63) and chamfer four (64) are located income light collimation face (2) both ends, its characterized in that: be provided with cylindrical stripe (7) on income light collimation face (2), the light that light source (1) sent comes to cylindrical stripe (7) on the income light collimation face (2), light adjusts the light-emitting direction and spreads after cylindrical stripe (7) and comes out to preceding light emitting surface (5), the light of income light collimation face (2) left and right sides evenly incides the preceding light emitting surface after cylindrical stripe (7) adjustment light outgoing direction and diffusion, fill in because of the dark space and the dull polish line defect of the corresponding preceding light emitting surface (5) position that the restriction of manufacturing and processing technology precision produced (61), chamfer two (62), chamfer three (63), chamfer four (64) and draft angle lead to, improve thick-walled spare optical system's optical homogeneity.

2. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the cylindrical stripes (4) are bilaterally symmetrical about a center line, and the center line is a straight line passing through the position of the light source (1) and parallel to the driving direction.

3. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the starting point of the range added at the left side of the cylindrical stripe (7) is the end point at the left side of the light incidence collimating surface (2), the cylindrical stripe surface (7) is formed along the right side direction of the light incidence collimating surface (2), and the end point position does not exceed the middle point position of the light incidence collimating surface (2) at most; the starting point of the added range on the right side of the cylindrical stripe (7) is the right end point of the light incidence collimation surface (2), the cylindrical stripe surface (7) is formed along the left direction of the light incidence collimation surface (2), and the end point position does not exceed the middle point position of the light incidence collimation surface (2) at most.

4. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the width of each single stripe of the cylindrical stripes (7) is 0.5mm-2 mm.

5. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the optical surface (9) at the hole digging position is also provided with a cylindrical stripe (7), and the vertical dark line is covered by the adjustment and diffusion action of the cylindrical stripe (7).

6. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the light source (1) is a red light source to realize a tail lamp position lamp or a tail lamp stop lamp function, or a white light source to realize a daytime running lamp, a headlight position lamp or a back-up lamp function, or a yellow light source to realize a turn lamp function.

7. The light collimating entrance face and cylindrical stripe thick wall part optical system of claim 1, wherein: the material of the thick-wall part (8) is polymethyl methacrylate or polycarbonate.

Technical Field

The invention relates to the technical field of automobile illumination, in particular to a thick-wall part optical system with a light incidence collimation surface and cylindrical stripes.

Background

The thick-wall part is a novel technology which places a light source at a focus to emit light, the light is collimated through a thick-wall area and then diffused through front surface stripes to achieve an even display effect, the thick-wall part is widely applied to civil high-end sedan cars, and front lamps and rear lamps are all used for turning lamps, daytime running lamps, position lamps, brake lamps and the like, mainly adopt LED light sources and gradually become main configurations of automobile lamps.

With the trend of vehicle lamp trend, the diversity of the model is more important in the vehicle lamp field, and the application of the thick-wall part on the vehicle lamp is more extensive. The uniformity of the thick-wall part is always one of the most concerned design effects of customers, and in order to meet various vehicle lamp models and meet the requirement of display uniformity, various thick-wall part design cases with different structural forms exist in the market. However, the light energy of the LED is distributed along with the light divergence angle in a gaussian curve, the divergence angle is larger, the light energy distribution is lower, and based on the precision limitation of the current manufacturing process, a certain chamfer and a draft angle are required to be left at the edge of the draft surface of all the thick-walled parts, the defects of the collimation system are caused by the uneven light energy distribution and the chamfer, so that the light emitting surface corresponding to the positions of the chamfer and the draft angle has an obvious dark space, the uniformity of the thick-walled parts in the vertical direction is reduced, the thickness of the thick-walled parts is greatly limited due to the influence of the uniformity in the vertical direction, the thickness of the thick-walled parts exceeding 8mm has defects in the uniformity in the vertical direction, and the thickness is larger, the uniformity is worse, the thickness of the current thick-walled parts is basically smaller than 10mm, however, along with the new trend of host factory for the automobile lamp modeling and function complication, the thickness of the current thick-, uniformity problems are also caused thereby.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a thick-wall optical system with a light-incident collimating surface and cylindrical stripes, which solves the problem of dark areas in the vertical direction of a front light-emitting surface of a thick-wall optical system with cylindrical stripes on the light-incident collimating surface and improves the uniformity.

The invention provides a thick-wall part optical system with an incident light collimation surface and cylindrical stripes, which comprises a light source and a thick-wall part, wherein the light source is positioned at the focus position of the thick-wall part, the thick-wall part comprises an incident light collimation surface, a left drawing angle inclined surface, a right drawing angle inclined surface, a left side wall, a right side wall, a front light emitting surface, a first chamfer, a second chamfer, a third chamfer, a fourth chamfer and an optical surface at a hole digging position, the incident light collimation surface is positioned at the light inlet end of the thick-wall part, the front light emitting surface is positioned at the light outlet end of the thick-wall part, the left drawing angle inclined surface and the left side wall are positioned at the left part of the thick-wall part, the right drawing angle inclined surface and the right side wall are positioned at the right part of the thick-wall part, the first chamfer and the second chamfer are respectively positioned at the front ends of the left drawing angle inclined surface and the right drawing angle inclined surface, the third chamfer and the chamfer are positioned at two ends, the light emitted by the light source enters the cylindrical stripes on the light incidence collimation surface, and according to the optical refraction principle, different refraction angles can be generated at different positions of the fringe surface, so that light rays can be diffused and emitted forwards at a certain angle on the fringe surface, the light passes through the cylindrical stripes to adjust the light emitting direction and diffuse and then is emitted to the front light emitting surface, the light on the left side and the right side of the light incidence collimating surface can be uniformly emitted to the front light emitting surface after the light passes through the cylindrical stripes to adjust the light emitting direction and the diffusion effect, the dark area and the no light line defects of the front light emitting surface position corresponding to the interval generated between the light incidence collimating surface and the left side wall and the right side wall in the background technology caused by the first chamfer, the second chamfer, the third chamfer, the fourth chamfer and the draft angle generated by the limitation of the manufacturing and processing technology precision are filled, and the optical uniformity of the optical system of the thick-wall part is improved.

The further improvement lies in that: the cylindrical stripes are bilaterally symmetrical about a center line, and the center line is a straight line passing through the position of the light source and parallel to the driving direction.

The further improvement lies in that: the starting point of the range added on the left side of the cylindrical stripe is the left end point of the light incidence collimation surface, the cylindrical stripe surface is made along the right direction of the light incidence collimation surface, and the position of the end point does not exceed the position of the middle point of the light incidence collimation surface at most; the starting point of the range added on the right side of the cylindrical stripe is the right end point of the light incidence collimation surface, the cylindrical stripe surface is formed along the left direction of the light incidence collimation surface, and the position of the end point does not exceed the position of the middle point of the light incidence collimation surface at most.

The further improvement lies in that: the design of the cylindrical stripes is calculated according to the incident light angle from the light emitted by the light source to the light incidence collimation surface.

The further improvement lies in that: the width of each single stripe of the cylindrical stripes is 0.5mm-2 mm.

The further improvement lies in that: the regional light that central part light energy is high is adjusted through cylindrical stripe, and the refraction that light-emitting direction light produced makes the position at different stripes produce different refraction angles, and its diffusion effect makes central region luminance and both sides in the driving direction tend to unanimous, improves the efficiency, the optics homogeneity of thick walled spare optical system, also avoids and has reduced the waste of unnecessary light energy efficiency under the prerequisite of guaranteeing to satisfy the legislation requirement.

The further improvement lies in that: the optical surface at the digging hole is also provided with cylindrical stripes, and the vertical dark lines are covered by the adjustment and diffusion effects of the cylindrical stripes.

The further improvement lies in that: the light source may be at a focal point or off-focus position, and the size and radius (i.e., the degree of protrusion) of the cylindrical stripe may be adjusted for the focal point or different off-focus position according to design and simulation results.

The further improvement lies in that: the light source is a red light source to realize a tail lamp position lamp or a tail lamp stop lamp function, or a white light source to realize a daytime running lamp, a headlight position lamp or a reversing lamp function, or a yellow light source to realize a turn lamp function.

The further improvement lies in that: the material of the thick-wall part is polymethyl methacrylate or polycarbonate.

The invention has the beneficial effects that: by making cylindrical stripes on the light incidence collimation surface of the thick-wall part, the problem of dark space caused by chamfering due to the limitation of the precision of the manufacturing and processing technology is solved, the uniformity of the thick-wall part in the vertical direction is improved, namely the problem of no dark line in the transverse direction is solved, and the thick-wall part with a thicker shape can be designed; the cylindrical stripes of the optical surface at the digging hole can also improve the uniformity of the thick-wall part in the horizontal direction, namely, the vertical hidden line is solved; meanwhile, the light energy distribution of the LED is improved, the small-angle light energy of the LED is uniformly diffused to a larger angle, and the brightness and two sides of the central area in the driving direction tend to be consistent, so that the energy efficiency uniformity of the optical system is improved, the optical uniformity of the optical system of the thick-wall part is improved, and unnecessary light energy waste is avoided and reduced on the premise of meeting the requirements of regulations.

Drawings

Fig. 1 is an external structural view of the present invention.

FIG. 2 is a direct view of the light incident surface of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a cross-sectional view taken along line a-a of fig. 3 in accordance with the present invention.

Fig. 5 is a partially enlarged view of the dotted frame portion of fig. 4 according to the present invention.

Fig. 6 is a partial enlarged view of a prior art without added cylindrical striations.

FIG. 7 is a partial enlarged view of the stripe adding position at the chamfer of the dotted line frame portion of FIG. 5 according to the present invention.

Fig. 8 is a schematic diagram of the position of the stripe addition of the present invention.

Fig. 9 is a diagram showing a lighting effect of a prior art thick-walled optical system.

Fig. 10 is a lighting effect diagram of the present invention.

Fig. 11 is a diagram of the lighting effect after two vertical dark lines are resolved after the optical surface 9 is striped at the hole digging position.

Fig. 12 is a prior art optical energy distribution diagram.

Fig. 13 is a graph of the optical energy distribution of the present invention.

Wherein: 1-light source, 2-light incidence collimation surface, 31-left draft angle inclined surface, 32-right draft angle inclined surface, 41-left side wall, 42-right side wall, 5-front light emitting surface, 61-chamfer one, 62-chamfer two, 63-chamfer three, 64-chamfer four, 7-light incidence collimation surface stripe, 8-thick wall part and 9-hole digging optical surface.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Fig. 6 is a partial cross-sectional view of the light incident surface of the optical system of the prior art, where the light source 1 is located at the focal point, the light emitted from the light source 1 is collimated by the light incident collimating surface 2 and then reaches the front light emitting surface 5, and is reflected by the left side wall 41 and then reaches the front light emitting surface 5 after passing through the left draft angle inclined surface 31, and there is a dark area on the left side of the front light emitting surface 5; similarly, light from light source 1 is collimated by entrance collimation surface 2 and then provided to front light-emitting surface 5, and is reflected by right side wall 42 and provided to front light-emitting surface 5 after passing through right draft angle inclined surface 32, with dark regions on the right side of front light-emitting surface 5 as shown. The left dark field designation referred to herein, i.e., shown in fig. 6, corresponds to the upper side of the thick-walled member optical system as viewed in fig. 1, and the right dark field designation referred to herein, i.e., shown in fig. 6, corresponds to the lower side of the thick-walled member optical system as viewed in fig. 1. In conjunction with the lighting effect diagram of fig. 9 of the prior art, the left dark area of fig. 6 corresponds to the upper horizontal dark stripe in the vertical direction of the thick-walled member optical system of fig. 9, and the right dark area of fig. 6 corresponds to the lower horizontal dark stripe in the vertical direction of the thick-walled member optical system of fig. 9. In addition, due to the distribution of the light energy of the LED, the light emitting surface is bright in the middle and dark at the upper and lower sides as a whole, which is another disadvantage of the prior art.

In order to solve the above-mentioned drawbacks, the present embodiment provides an optical system of a thick-walled component with a light-incident collimating surface and cylindrical stripes, as shown in fig. 5, the light emitted from the light source 1 is refracted by the left-side draft angle inclined surface 31 and then reflected by the left-side sidewall 41, and the light refracted by the right-side draft angle inclined surface 32 and then reflected by the right-side sidewall 42 are not described herein. Here, the light emitted from the light source 1 is collimated and emitted from the light-incident collimating surface 2. The optical system of the embodiment includes a light source 1 and a thick-walled member 8, the thick-walled member 8 includes an incident light collimating surface 2, a left-side draft angle inclined surface 31, a right-side draft angle inclined surface 32, a left-side wall 41, a right-side wall 42, a front light emitting surface 5, a first chamfer 61, a second chamfer 62, a third chamfer 63, a fourth chamfer 64, and an optical surface 9 at a hole digging position, wherein, a cylindrical stripe 7 is arranged on the incident light collimating surface 2. The light source 1 is located at a focus position, light rays emitted by the light source 1 enter the cylindrical stripe 7 on the light-in collimating surface 2, the light rays pass through the cylindrical stripe 7, the light-out direction is adjusted, the light rays are diffused and then emitted to the front light-emitting surface 5, the light rays at the left side and the right side of the light-in collimating surface 2 can uniformly enter the front light-emitting surface 5 after the light rays pass through the cylindrical stripe 7, the light ray emitting direction is adjusted, the light rays are diffused and then emitted to the front light-emitting surface 5, and dark areas and no light ray defects at the positions of the front light-emitting surface, corresponding to the intervals generated between the light-in collimating surface 2 and the left side wall 41 and the right side wall 42 in the background technology due to the limitation of the manufacturing.

As can be seen by combining the optical energy distribution of the prior art in fig. 12 and the optical energy distribution of the present invention in fig. 13, the optical energy distribution of the prior art in fig. 12 is far higher near the central region than at the two side regions, which results in uneven energy distribution and the final optical effect, and the optical system of the thick-walled member is also easier in terms of light efficiency to meet the regulatory requirements, the energy efficiency of the thick-walled member is generally higher, and the adopted light sources are basically a row concept, which results in unnecessary waste of energy efficiency in the central region; the technical scheme of the invention shown in fig. 13 enables light in an area with high central light energy to be adjusted by the cylindrical stripes 7, so that the light emitting direction can also be diffused to a certain extent, because the LED light energy is distributed in a gaussian curve along with the light divergence angle, the greater the divergence angle, the lower the light energy distribution, it can be understood that when the stripes 7 are not added, the light is directly collimated and emitted through the surface, the stripes 7 are added, the light can be refracted, and different refraction angles are generated at different positions of the stripes 7, so that the diffusion effect is achieved, and the brightness and two sides of the central area in the driving direction tend to be consistent, thereby not only improving the energy efficiency uniformity of the optical system, improving the optical uniformity of the thick-wall optical system, but also avoiding and reducing unnecessary light energy waste on the premise of meeting the regulatory requirements.

Fig. 7 is a partial enlarged view of the position of the cylindrical stripe added. Fig. 8 is a schematic view of the position of the cylindrical stripe addition. The cylindrical stripes 7 are bilaterally symmetrical about a center line, and the center line is a straight line passing through the position of the light source and parallel to the driving direction. The starting point of the added range on the left side of the cylindrical stripe 7 is the end point on the left side of the light incidence collimating surface 2, the cylindrical stripe surface 7 is made along the light incidence collimating surface 2 towards the right side, the end point position needs to be determined and adjusted according to the actual light distribution result, the position of the middle point of the light incidence collimating surface is not exceeded, the design of a general situation graph is convenient, an engineer can directly make full stripes on the surface, and in the description, the end points on the two sides are used, and the middle point is the end point position. However, the number of stripes may be reduced appropriately to meet the light distribution requirement.

The starting point, the direction along and the end point position of the added range on the right side of the cylindrical stripe 7 are the same as the method and principle of the cylindrical stripe 7, and will not be described here.

The design of the cylindrical stripes 7 is calculated from the angle of the incident light from the light source 1 to the light collimating surface 2. The individual stripe width of the cylindrical stripes 7 is 0.5mm-2 mm.

Fig. 9 is a lighting effect diagram of a thick-walled workpiece optical system in the prior art, and fig. 10 is a lighting effect diagram of a thick-walled workpiece optical system with a cylindrical stripe added to a light-incident collimating surface according to the present invention, it can be seen that fig. 9 has two distinct dark line regions when viewed in a transverse direction, and the two dark line regions are the most important solutions for making a cylindrical stripe on a light-incident collimating surface 2 according to the present invention, and the optical effect thereof is as shown in fig. 10, and it can be seen that the two transverse dark line regions are improved and solved.

A further improvement is that fig. 9 and 10 show two thinner dark lines in a vertical direction, and in order to solve this problem, cylindrical stripes are also provided on the optical surface 9 at the position of the dug hole of the secondary collimation hole (defined by the conventional industry, and the reference numerals in the figures are not shown) of the thick-walled member 8 of the present invention, and the cylindrical stripes of the optical surface 9 at the position of the dug hole cover the vertical dark lines through the adjustment and diffusion effects of the cylindrical stripes, so as to solve this defect, that is, the optical surface 9 at the position of the dug hole is used for solving the two vertical dark lines, and fig. 11 is a lighting effect diagram after further solving the two vertical dark lines on the basis of the scheme of fig. 10 for solving the horizontal dark lines, so that it can be seen that the light-out surface of the whole thick-walled member has no obvious dark area problem in the horizontal direction and.