CN210688085U

CN210688085U - Optical system for car lamp for realizing short thick-wall light guide by using roof prism

Info

Publication number: CN210688085U
Application number: CN201921877750.1U
Authority: CN
Inventors: 陈天祥; 吴磊磊; 张荣平
Original assignee: Xunchi Vehicle Jiangsu Co ltd
Current assignee: Xunchi Vehicle Jiangsu Co ltd
Priority date: 2019-11-03
Filing date: 2019-11-03
Publication date: 2020-06-05
Anticipated expiration: 2029-11-03

Abstract

The utility model discloses an utilize roof prism to realize optical system for car light of short thick wall light guide, including PCB board and the short thick wall light guide of installing light source LED, short thick wall light guide set up the spotlight ware in income light department, set up the decorative pattern play plain noodles in light-emitting department, short thick wall light guide end sets up roof prism structure, roof prism structure includes two upper and lower inclined planes, two upper and lower inclined planes intersect and form the edges and corners, the focus department of spotlight ware is arranged in to light source LED's optics center. The utility model discloses optical system collects the LED light through the combination of the face type of difference, and the collimation, the total reflection, diffusion or redistribution utilize roof prism structure to deflect the wide-angle of light, arrange LED and PCB board in the decorations circle side to can increase the optical path in shallower spatial structure, promote the homogeneity of lighting.

Description

Optical system for car lamp for realizing short thick-wall light guide by using roof prism

Technical Field

The utility model relates to an optical system for car light belongs to car light field technique.

Background

As LEDs are applied more and more frequently to vehicle lamps, the use of conventional concentrator thick-walled light guide solutions is increasing. Because the requirement of the whole car factory on the shape is higher and higher, the depth of a part of area limited by the space of the lamp body is shallow due to the through-type shape, and the lighting effect of the traditional condenser thick-wall part scheme limited by the depth cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car light optical system utilizes shorter thick wall light guide to increase ridge prism structure and increases the light path and optimize the effect of lighting.

The utility model provides an utilize roof prism to realize optical system for car light of short thick wall light guide, is including installing light source LED's PCB board and short thick wall light guide, short thick wall light guide set up the spotlight ware in light-in department, set up the decorative pattern play plain noodles in light-out department, short thick wall light guide end sets up roof prism structure, roof prism structure includes two upper and lower inclined planes, two upper and lower inclined planes intersect and form the edges and corners, light source LED's optical center arranges the focus department of spotlight ware in.

The condenser is used for collimating incident light, so that the incident light is incident to the roof prism structure after being collimated, and the roof prism structure is used for diffusing and guiding the collimated incident light out of the pattern light-emitting surface after the collimated incident light is totally reflected twice.

The short thick-wall light guide is of an integrated polyhedral structure and is made of glass, PC or PMMA transparent materials.

The utility model discloses optical system collects the LED light through the combination of the face type of difference, and the collimation, the total reflection, diffusion or redistribution utilize roof prism structure to deflect the wide-angle of light, arrange LED and PCB board in the decorations circle side to can increase the optical path in shallower spatial structure, promote the homogeneity of lighting. In addition, the processing cost and the assembly difficulty are reduced, the die can be removed at one time, a complex process is not needed, and the cost is greatly saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the cross-sectional structure and the light propagation principle of the present invention.

Fig. 3 is a front view of a thick-walled light guide of the present invention.

Detailed Description

As shown in fig. 1, the utility model discloses a polyhedral structure of short thick wall light guide 3 formula as an organic whole, this polyhedral structure does the utility model discloses car light optical system's main part, short thick wall light guide 3 sets up spotlight ware 4 in income light department, sets up decorative pattern play plain noodles 6 in light-emitting department, and short thick wall light guide 3 is terminal to be roof prism structure 5, and roof prism structure 5 includes two upper and lower inclined planes, and upper and lower two inclined planes are crossing to form the edges and corners, and the focus department of spotlight ware is arranged in to light source LED 2's optical center, and the income light end and the play plain noodles of short thick wall light guide 3 are located same one.

As shown in fig. 2, the light source LED2 is disposed on the PCB 1, the light source center of the light source LED2 is located at the focus of the condenser structure 4, the light emitted from the light source LED2 enters the short thick-walled light guide 3 through the condenser 4 in a collimated manner, the short thick-walled light guide 3 has a roof prism structure 5 at the end, the roof prism structure 5 is formed by two surface shapes forming a certain angle, the angle is adjusted by combining the incident light angle, which is 90 ° in this example, after the collimated light enters the roof prism structure 5 at the same angle, the collimated light is reflected by two total reflections of 180 ° and then returns along the original direction and exits through the pattern light exit surface 6, so as to meet different regulatory requirements and achieve a uniform lighting effect. When the LED lamp is used, the light path can be deflected by 180 degrees by the thick wall of the LED lamp in a shorter lamp body structure, the light path is greatly increased, the lighting uniformity is improved, meanwhile, the PCB board 1 and the light source LED2 are positioned on the same side of the light emitting surface, the light emitting direction space of the lamp body is saved, and more complex modeling design is convenient to realize.

The short thick wall light guide 3 is made of a transparent material such as glass, PC, PMMA, or the like.

Claims

1. The utility model provides an utilize roof prism to realize optical system for car light of short thick wall light guide, characterized in that, including PCB board (1) and short thick wall light guide (3) of installing light source LED (2), short thick wall light guide (3) set up spotlight ware (4) in light entrance department, set up decorative pattern play plain noodles (6) in light exit department, short thick wall light guide (3) end sets up roof prism structure (5), roof prism structure (5) include two upper and lower inclined planes, two upper and lower inclined planes are crossing to form the edges and corners, the focus department of spotlight ware is arranged in to the optical center of light source LED (2).

2. The optical system according to claim 1, wherein the condenser (4) collimates the incident light, so that the collimated incident light enters the roof prism structure (5), and the roof prism structure (5) disperses and guides the collimated incident light through the patterned light-emitting surface (6) after twice total reflection.

3. Optical system according to claim 1, characterized in that the short thick-walled light guide (3) is a one-piece polyhedral structure, using glass, PC or PMMA transparent material.