Light guide plate type direct projection thick-wall structure and optical system

Abstract

A light guide plate type direct projection thick wall structure provided by the present invention comprises an end collimating lens, a top surface laser etching pattern, a front surface laser etching pattern and a bottom light guide tooth, the end collimating lens is provided with an optical axis, the front surface laser etching pattern is arranged on the optical axis and is aligned with the end collimating lens, and the bottom light guide tooth is arranged on the front surface laser etching pattern. The bottom light guide teeth are arranged below the end collimating lens, the top surface laser etching patterns are in angular connection with the front surface laser etching patterns, and the top surface laser etching patterns are arranged above the bottom light guide teeth. According to the invention, two approximately vertical surfaces can emit light at the same time, the design space is greatly saved, and the design cost is reduced; by adjusting the laser carving pattern angle of the light-emitting surface, the two light-emitting surfaces are consistent in light-emitting effect, and the problem that in a traditional optical scheme, the two light-emitting surfaces are inconsistent in effect at different visual angles is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lamps, and in particular to a light guide plate type direct projection thick-wall structure and an optical system. Background Art

[0002] With the development of technology and the improvement of human aesthetics, the design of car lights is no longer just about meeting the basic requirements of regulations, but also requires a more uniform and distinctive lighting effect. Compared with the single-sided lighting effect, the multi-faceted lighting effect has a more three-dimensional and technological feel, and is favored by various OEMs.

[0003] Traditional multi-faceted lighting effects mostly use two optical systems. The rear LED is responsible for the front surface lighting, and the lower LED is responsible for the upper surface lighting. This optical solution not only requires more space, but also requires more cost. In addition, since the optical axes of the two sets of LEDs are nearly vertical, the lighting effects are inconsistent at different viewing angles. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a light guide plate type direct projection thick-wall structure and optical system, which allows two surfaces to emit light at the same time, and the lighting effects of the two surfaces are consistent at different viewing angles.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention provides a light guide plate type direct projection thick-wall structure, comprising an end collimating lens, a top surface laser engraved pattern, a front surface laser engraved pattern and a bottom light guide tooth, the end collimating lens is provided with an optical axis, the front surface laser engraved pattern is arranged on the optical axis and aligned with the end collimating lens, the bottom light guide tooth is arranged below the end collimating lens, the top surface laser engraved pattern is connected to the front surface laser engraved pattern at an angle, and the top surface laser engraved pattern is arranged above the bottom light guide tooth.

[0007] Further preferably, the top surface radium engraved pattern and the front surface radium engraved pattern have the same shape and size, and the pattern shapes are both square structures, and the length and width dimensions of the top surface radium engraved pattern and the front surface radium engraved pattern are both 0.5mm×0.5mm.

[0008] Further preferably, the end collimating lens comprises a refractive surface and a side total reflection surface, and diffusion stripes are arranged on the refractive surface and the side total reflection surface.

[0009] Further preferably, the farther the bottom light guide tooth is from the end collimating lens, the wider the tooth is, and the tooth surface has an arc.

[0010] Further preferably, the angle between the top surface laser engraved pattern and the front surface laser engraved pattern is 120°-150°.

[0011] Further preferably, the angle between the bottom light guide tooth and the optical axis of the end collimating lens is 0°-30°.

[0012] Further preferably, the angle between the bottom light guide teeth and the front surface laser engraved pattern is 45°-90°.

[0013] Further preferably, the angle between the bottom light guide teeth and the top surface laser engraved pattern is 0°-60°.

[0014] Further preferably, the height between the center point of the end collimating lens and the bottom light guide tooth in a direction perpendicular to the optical axis is 8-15 mm.

[0015] Further preferably, the projection size of the front surface laser engraved pattern on the plane perpendicular to the optical axis is less than 30 mm.

[0016] The present invention also provides an optical system, comprising a light source and the above-mentioned light guide plate type direct projection thick-wall structure, wherein the light emitted by the light source is collimated by an end collimating lens and then emitted from the top surface laser engraved pattern and the front surface laser engraved pattern.

[0017] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0018] (1) The optical solution of combining thick walls and light guide plates on one optical structure achieves simultaneous illumination of two nearly vertical surfaces through a single set of light sources (LEDs) and a single optical structure, which greatly saves design space and reduces design costs.

[0019] (2) By adjusting the angle of the laser engraved pattern on the light-emitting surface, the front surface and the upper surface have the same luminous effect when observed from different viewing angles, thus solving the problem of inconsistent luminous effects of the two luminous surfaces at different viewing angles in traditional optical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 A schematic diagram of a light guide plate type direct projection thick wall structure provided by the present invention;

[0022] Figure 2 A right view of the light guide plate type direct projection thick wall structure provided by the present invention;

[0023] Figure 3 A top view of the light guide plate type direct projection thick wall structure provided by the present invention;

[0024] Figure 4A partial enlarged view of the top surface laser engraved pattern and the front surface laser engraved pattern in the light guide plate type direct projection thick wall structure provided by the present invention;

[0025] Figure 5 A partial enlarged view of the collimating lens in the light guide plate type direct projection thick wall structure provided by the present invention;

[0026] Figure 6 A partial enlarged view of the bottom light guide teeth in the light guide plate type direct projection thick wall structure provided by the present invention;

[0027] Figure 7 This is a light path diagram of the light guide plate type direct projection thick-wall structure provided by the present invention.

[0028] Illustration: 1-end collimating lens, 11-refractive surface, 12-side total reflection surface, 2-top surface laser engraved pattern, 3-front surface laser engraved pattern, 4-bottom light guide tooth, 5-optical axis.

[0029] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0030] In order to better understand the present invention, a more detailed description will be made of various aspects of the present invention with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of embodiments of the present invention, and are not intended to limit the scope of the present invention in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0032] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present invention, "may" is used to mean "one or more embodiments of the present invention". And, the term "exemplary" is intended to refer to an example or illustration.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] like Figures 1 to 7 As shown, the present invention provides a light guide plate type direct projection thick wall structure, including an end collimating lens 1, a top surface laser engraved pattern 2, a front surface laser engraved pattern 3 and a bottom light guide tooth 4, the end collimating lens 1 is provided with an optical axis 5, the front surface laser engraved pattern 3 is arranged on the optical axis 5 and aligned with the end collimating lens 1, and the bottom light guide tooth 4 is arranged below the end collimating lens 1. The top surface laser engraved pattern 2 is connected to the front surface laser engraved pattern 3 at an angle, and the top surface laser engraved pattern 2 is arranged above the bottom light guide tooth 4, the top surface laser engraved pattern 2 and the front surface laser engraved pattern 3 have the same pattern shape and size, and the pattern shape is a square structure. In the present invention, after the light is collimated by the collimating lens, part of the light is diffused through the light-emitting surface (the laser-carved pattern 3 on the front surface) to achieve a uniform light-emitting effect, and the other part of the light hits the bottom light-guiding tooth 4, and after total reflection by the light-guiding tooth, hits the light-emitting surface (the laser-carved pattern 2 on the top surface) to achieve a uniform light-emitting effect, that is, the two surfaces are illuminated at the same time, and the light-emitting effects of the two surfaces at different viewing angles are consistent. In addition, the structure of the light-guiding plate is simple, meeting the requirements of miniaturization design.

[0036] More specifically, the length and width of the top surface laser engraved pattern 2 and the front surface laser engraved pattern 3 are both 0.5mm×0.5mm, making the luminous effect more delicate; and the diffusion stripes of the laser engraved pattern have a certain light-moving angle, so that even if the light trend passing through the top surface laser engraved pattern 2 and the front surface laser engraved pattern 3 changes, the luminous effects of the top surface and the front surface are consistent at different viewing angles.

[0037] In order to increase the uniformity of the luminous effect of the front surface, the end collimating lens 1 comprises a refractive surface 11 and a side total reflection surface 12 , and diffusion stripes are arranged on the refractive surface 11 and the side total reflection surface 12 .

[0038] More specifically, the farther the bottom light guide teeth 4 are from the end collimating lens 1, the wider the teeth are, and the tooth surface has an arc, so that the light can be fully reflected onto the top laser engraved pattern 2, thereby ensuring that the top laser engraved pattern 2 emits light evenly.

[0039] More specifically, the angle between the top surface laser-carved pattern 2 and the front surface laser-carved pattern 3 is 120°-150°, ensuring that the light output has a three-dimensional and technological sense, and better light uniformity. The angle between the bottom light guide tooth 4 and the optical axis 5 of the end collimating lens 1 is 0°-30°, ensuring that the light can be better reflected to the top surface laser-carved pattern 2, ensuring the light uniformity effect. The angle between the bottom light guide tooth 4 and the front surface laser-carved pattern 3 is 45°-90°, meeting the requirements of miniaturized design. The angle between the bottom light guide tooth 4 and the top surface laser-carved pattern 2 is 0°-60°, ensuring that the light can be better reflected to the top surface laser-carved pattern 2, ensuring that the light output has a three-dimensional and technological sense.

[0040] The height between the center point of the end collimating lens 1 and the bottom light guide tooth 4 in the direction perpendicular to the optical axis 5 is 8-15 mm, ensuring that the light passing through the end collimating lens 1 can be better and more evenly reflected onto the bottom light guide tooth 4 .

[0041] The projection size of the front surface laser engraved pattern 3 on the plane perpendicular to the optical axis 5 is less than 30 mm, which meets the requirements of miniaturization design and ensures that part of the light passing through the end collimating lens 1 can directly irradiate the front surface laser engraved pattern 3, so that the light can be better transmitted.

[0042] The present invention also provides an optical system, including a light source and the above-mentioned light guide plate type direct projection thick wall structure, the light source emits light after being collimated by the end collimating lens 1 and then emitted from the top surface laser engraved pattern 2 and the front surface laser engraved pattern 3. The light source can be an LED, and after the light emitted by the LED is collimated into small-angle light by the collimating lens, a part of the light passes through the laser engraved pattern in front of the light output surface to diffuse, and the other part of the light hits the bottom light guide tooth 4, and after being totally reflected by the bottom light guide tooth 4, it hits the laser engraved pattern 2 on the top surface of the light output surface to achieve a uniform light effect. The present invention realizes the simultaneous illumination of two nearly vertical surfaces through a single group of LEDs and a single optical structure, which greatly saves design space and reduces design costs compared to traditional optical solutions; it increases the consistency of the light emission of the two surfaces at different viewing angles, making the lighting effect more three-dimensional.

[0043] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A light guide plate type direct projection thick wall structure, characterized in that: The invention comprises an end collimating lens (1), a top surface laser engraved pattern (2), a front surface laser engraved pattern (3) and a bottom light guide tooth (4), wherein the end collimating lens (1) is provided with an optical axis (5), the front surface laser engraved pattern (3) is arranged on the optical axis (5) and is aligned with the end collimating lens (1), the bottom light guide tooth (4) is arranged below the end collimating lens (1), the top surface laser engraved pattern (2) is connected to the front surface laser engraved pattern (3) at an angle, and the top surface laser engraved pattern (2) is arranged above the bottom light guide tooth (4).

2. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The top surface laser engraved pattern (2) and the front surface laser engraved pattern (3) have the same pattern shape and size, and the pattern shapes are both square structures. The length and width dimensions of the top surface laser engraved pattern (2) and the front surface laser engraved pattern (3) are both 0.5 mm×0.5 mm.

3. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The end collimating lens (1) comprises a refractive surface (11) and a side total reflection surface (12), and diffusion stripes are provided on the refractive surface (11) and the side total reflection surface (12).

4. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The farther the bottom light guide tooth (4) is from the end collimating lens (1), the wider the tooth becomes, and the tooth surface has an arc.

5. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The included angle between the top surface laser engraved pattern (2) and the front surface laser engraved pattern (3) is 120°-150°.

6. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The included angle between the bottom light guide tooth (4) and the optical axis (5) of the end collimating lens (1) is 0°-30°.

7. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The included angle between the bottom light guide teeth (4) and the front surface laser engraved pattern (3) is 45°-90°.

8. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The included angle between the bottom light guide teeth (4) and the top surface laser engraved pattern (2) is 0°-60°.

9. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The height between the center point of the end collimating lens (1) and the bottom light guide tooth (4) in the direction perpendicular to the optical axis (5) is 8-15 mm.

10. The light guide plate type direct projection thick wall structure according to claim 1, characterized in that: The projection size of the front surface laser engraved pattern (3) on the surface perpendicular to the optical axis (5) is less than 30 mm.

11. An optical system, characterized in that: It comprises a light source and a light guide plate type direct projection thick-wall structure as described in any one of claims 1 to 10.

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