TW201721051A - Optical module of laser vehicle lamp capable of providing a high beam light mode and a low beam light mode - Google Patents

Abstract

The present invention provides an optical module of laser vehicle lamp, which includes a laser light source, a convex lens, a substrate, a reflector set, a plurality of support rods and a transmission member. The laser light source is capable of generating a laser beam. The convex lens is disposed on a propagation path of the laser beam generated by the light source so as to focus the laser beam. The substrate is disposed on the propagation path of the laser beam that has been focused by the lens, and the surface of the substrate is coated with yellow fluorescent powder. The reflector set is disposed on the propagation path of the laser beam reflected by the substrate. The support rods are disposed at the rear side of the reflector set for supporting the reflector set. The transmission member is disposed at the rear side of the reflector set, and is connected with the support rods. The transmission member drives the support rods to change the light reflection surface of the reflector set thereby changing the light field of the optical module of laser vehicle lamp.

Description

Laser headlight optical module and system thereof

The present invention relates to a laser light optical module, in particular to a laser light optical module and a system thereof having a high beam mode and a low beam mode.

Because of its high luminous flux, small size and low power loss, the laser diode is highly developed for use in multimedia projectors and automotive lighting devices. The laser diode has the advantage of small size, which makes the laser headlights more likely to be optically designed. With optical design, the laser lights are no longer limited to a single function. In the future, daytime running lights, direction lights, Functions such as fog lights will be integrated into a single lamp module, and the car as a whole has more space to apply.

However, the design of the laser headlights is very complicated. In the existing headlights, in some optical modules of some lights, multiple laser light sources are needed to generate the function of the far and low beam lights, or some cars. The lamp needs to use a shutter or a reflector to generate the function of the far and low beam modulation. The design is very complicated, and many additional components need to be added to have the functions of the far and low beam at the same time.

Therefore, according to the above-mentioned shortcomings relating to the laser light and the existing lamp, there is a laser lamp with a simple design, and it is not necessary to additionally add components such as a laser light source or a shutter in the optical module, so that the lamp can have a long distance at the same time. Light mode and low beam mode, and this light is in compliance with regulations.

The purpose of this creation is to provide a laser light module that allows the laser light system to operate in high beam and low beam modes.

According to the above object, the present invention provides a laser light optical module, comprising: a laser light source for generating a laser beam; and a convex lens located at a transmission path of the laser beam generated by the laser light source The surface of the substrate is provided with a phosphor powder layer, and the phosphor powder layer is disposed on a transmission path after the convex lens focuses the laser beam, and the phosphor powder layer comprises yellow phosphor powder; a mirror set disposed on a transmission path of the laser beam reflected by the substrate and the phosphor layer; a plurality of support rods disposed on a rear side of the mirror group and configured to support the mirror group; The transmission member is disposed on the rear side of the mirror group and connected to the support rod. The support member drives the support rod to change the light reflecting surface of the mirror group, thereby changing the light field of the optical module of the laser light.

Another object of the present invention is to provide a laser light optical module through which the laser light is operated in both high beam and low beam to comply with regulations.

According to the above object, the present invention provides a laser lamp system which is composed of six optical modules and is divided into three upper optical parts and three lower optical parts. The optical modules, each of the optical modules comprises: a laser light source for generating a laser beam; a convex lens located on a transmission path of the laser beam generated by the laser light source to focus the a laser beam; a surface of the substrate is provided with a phosphor powder layer, the phosphor powder layer is located on the transmission path of the convex lens after focusing the laser beam, the phosphor powder layer comprises yellow phosphor powder; a mirror group, set And a plurality of support rods disposed on a rear side of the mirror group and configured to support the mirror group; a transmission member, disposed on the transmission path of the laser beam reflected by the substrate and the phosphor layer; The support rod is connected to the rear side of the mirror group, and the support rod is driven by the transmission member to change the light reflecting surface of the mirror group, thereby changing the light field of the optical module of the laser light.

The laser light optical module of the present invention can combine two reflective lenses into a mirror when the lamp is operated in the high beam mode, and when the lamp is operated in the low beam, the upper half of the reflective lens moves to The lower half reflects the back side of the lens, and only the lower half of the reflective lens reflects the light, producing a low beam field shape. In the lamp system, six optical modules are used. Through the optical design, when the lamp system is operated separately for the far and low beam functions, the illumination values for the high beam and low beam can be met. .

The technical means adopted by the present invention for achieving the intended purpose of the invention are further explained below in conjunction with the drawings and the preferred embodiments of the present invention.

Figure 1 is a schematic view of the optical path of the optical module of the laser light of the present invention. As shown in FIG. 1 , the laser light module 10 of the present invention mainly comprises a laser light source 11 , a lens 12 , a substrate 13 , a phosphor layer 14 , a plurality of support rods 15 , and a mirror group . 16 and a transmission member 17. The artificial laser light optical module 10 is mounted on a headlight lamp housing (not shown) of the vehicle.

The laser source 11 is composed of a laser diode to generate a laser beam. The lens 12 is a convex lens, and the lens 12 is located on the transmission path of the laser beam generated by the laser light source 11 to focus the laser beam. The surface of the substrate 13 can be coated to form a phosphor layer 14, which contains yellow phosphor powder. The substrate 13 is located on the transmission path after the lens 12 focuses the laser beam. When the laser beam focused by the lens 12 is transmitted to the phosphor layer 14 of the substrate 13, the yellow phosphor of the phosphor layer 14 absorbs the laser beam. The blue light in the excitation excites the reflected yellow light. The mirror group 16 is disposed on the transmission path of the laser beam reflected by the substrate 13, and a plurality of support rods 15 are disposed on the rear side of the mirror group 16 for supporting the mirror group 16. The transmission member 17 is disposed on the rear side of the mirror group 16 and connected to the support rod 15. The support member 15 is driven by the transmission member 17 to change the light reflecting surface of the mirror group 16, thereby changing the light field of the laser light module 10.

2A and 2B are plan views showing the mirror group of the present invention. As shown in FIG. 2A, and referring to FIG. 1, the mirror group 16 of the laser light module 10 of the present invention includes a first mirror 161 and a second mirror 162, a first mirror 161 and a The two mirrors 162 are each a semi-elliptical reflecting mirror. When the first mirror 161 is combined with the second mirror 162, the mirror group 16 is entirely elliptical. In the different embodiments, as shown in FIG. 2B, the first mirror 161 and the second mirror 162 are respectively reflective glasses of an arc structure, and the first mirror 161 includes a first joint surface 163, and the second The mirror 162 includes a second joint surface 164 for joining the first joint surface 163. The first joint surface 163 is complementary to the second joint surface 164. For example, the angle of the first joint surface 163 may be greater than 180. ∘ or less than 180 ∘, and the angle of the second joint surface 164 may be less than 180 ∘ or greater than 180 ∘, so that the first mirror 161 and the second mirror 162 can be combined to form an elliptical mirror group. 16.

Referring to FIG. 2A and FIG. 2B and referring to FIG. 1 , when the laser light optical module 10 is operated in the high beam mode, the first mirror 161 and the second mirror 162 are combined into an elliptical mirror group 16 . When the laser light module 10 is operated in the low beam, the first mirror 161 drives the support rod 15 by the transmission member 18, so that the first mirror 161 moves to the rear side of the second mirror 162, allowing the mine The taillight optical module 10 has only the second mirror 162 to reflect light, thereby producing a low beam field shape. In order to meet the illuminance value specification of the low-light field measurement point in the European Commission for Europe (ECE R112), also known as the Headlamps with an Asymmetrical Passing Beam, the second mirror The illumination directions of 162 are all in accordance with the illumination value specification. In the use of laser diodes, this creation uses six laser diodes as the laser source. Through the optical design, the lamp system can operate in the far and low beam functions, respectively, to meet the European vehicle regulations. (ECE R112) Specification of illumination values for COSCO and low beam. Therefore, a complete laser light module 10 is constructed, and has the functions of modulation and low beam.

3A-3D are schematic views of the operation of the first mirror 161 and the second mirror 162. As shown in FIG. 3A and referring to FIG. 1, when the laser light module 10 of the present invention is operated in the high beam mode, the first mirror 161 and the second mirror 162 are tightly combined to form an elliptical shape. When the laser light module 10 is to be operated in the low beam mode, as shown in FIG. 3B, the transmission member 17 drives the support rod 15 to move the first mirror 161 upward along the longitudinal axis, which will be the first The mirror 161 is separated from the second mirror 162. Next, as shown in FIG. 3C, the support rod 15 drives the first mirror 161 to move backward in the horizontal axis direction. Finally, as shown in FIG. 3D, the support rod 15 drives the first mirror 161 along the vertical axis direction. Moving downward causes the first mirror 161 to move to the rear side of the second mirror 162. In the low beam mode, since the first mirror 161 is moved to the rear side of the second mirror 162, only the second mirror 162 of the mirror group 16 can reflect the laser beam transmitted from the substrate 13, so that the present The optical module can meet the illumination value specification of the low beam in the regulation EEC R112.

4A and 4B are schematic diagrams showing the operation of a laser light system with an adjustable variable light field. 4A to 4D, in the laser light system 40 of this embodiment, it is composed of six optical modules 41, and is divided into an upper half 42 and a lower half. 43, which respectively comprise three optical modules 41. When operating in the low beam mode of FIG. 4A, the three optical modules 41 of the upper half 42 are in the off state, while the three optical modules 41 of the lower half 43 are in the on state, and in the lower half 43 In the three optical modules 41, the optical modules 41 on the left and right sides include the mirror group 16 as shown in FIGS. 2A and 2B, and the optical module 41 in the middle is the reflection module 16 in FIGS. 3A and 3B. The first mirrors 161 of the mirror group 16 are all moved to the rear side of the second mirror 162, so that the three optical modules 41 of the lower half 43 only the second mirror 162 can reflect the laser beam to form a laser. The lower half of the three optical modules 41 of the lower half 43 of the lamp system 40 can be illuminated, the light field 50 of which is shown in Figure 5A. When operating in the high beam mode of FIG. 4B, the six optical modules 41 are all turned on, and the light field 50 is as shown in FIG. 5B. Through the optical module structure of the above-mentioned laser lamp, in the high beam mode, the simulation result is 63.98 illuminance in terms of the maximum illuminance value, and the average illuminance value in the horizontal ±1125 mm region is 43.17 lux, which satisfies The existing automotive lights regulations, and the light field width is 8560mm, in line with the 7920mm specified by the regulations.

In summary, the laser light optical module of the present invention can combine two mirrors into an elliptical mirror group when the lamp is operated in the high beam mode, and when the lamp is operated in the low beam The upper half of the mirror is moved to the rear side of the lower half mirror by a transmission mechanism, and only the lower half mirror reflects the light to produce a low beam field shape. Through the creation of the laser light module of the laser, no need to add additional laser light source or shutter, the design of the two mirrors can achieve the effect of far and low beam. In the lamp system, six optical modules are used. Through the optical design, when the lamp system is operated separately for the far and low beam functions, the illumination values for the high beam and low beam can be met. .

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art, The equivalents of the above-described technical contents may be modified or modified to equivalent changes without departing from the spirit and scope of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the present technical solution.

10‧‧‧Laser light module
11‧‧‧Laser light source
12‧‧‧ lens
13‧‧‧Substrate
14‧‧‧Fluorescent powder layer
15‧‧‧Support rod
16‧‧‧Mirror group
161‧‧‧first mirror
162‧‧‧second mirror
17‧‧‧Transmission components
40‧‧‧Laser headlight system
41‧‧‧Optical module
42‧‧‧ upper half
43‧‧‧ Lower half
50‧‧‧Light field

Figure 1 is a schematic view of the optical path of the optical module of the laser light of the present invention. 2A and 2B are schematic plan views of the first mirror and the second mirror of the present invention. 3A-3D are schematic views of the operation of the first mirror and the second mirror. 4A and 4B are schematic diagrams showing the operation of a laser light system with an adjustable variable light field. FIG. 5A and FIG. 5B are schematic diagrams showing the light field of the laser light lamp system with the adjustable variable light field shape.

10‧‧‧Laser light module

11‧‧‧Laser light source

12‧‧‧ lens

13‧‧‧Substrate

14‧‧‧Fluorescent powder layer

15‧‧‧Support rod

16‧‧‧Mirror group

17‧‧‧Transmission components

Claims (11)

A laser light optical module, comprising: a laser light source for generating a laser beam; a convex lens located on a transmission path of the laser beam generated by the laser light source to focus the laser beam; a substrate having a phosphor layer disposed on a surface thereof, the phosphor layer being disposed on a transmission path after the convex lens focuses the laser beam, the phosphor layer comprising yellow phosphor powder; and a mirror group disposed on the substrate a transmission path of the laser beam reflected by the phosphor layer; a plurality of support rods disposed on a rear side of the mirror group and configured to support the mirror group; a transmission member disposed on the mirror The rear side of the group is connected to the support rod, and the support rod is driven by the transmission member to change the light reflecting surface of the mirror group, thereby changing the light field of the optical module of the laser light. The laser light optical module of claim 1, wherein the mirror group comprises a first mirror and a second mirror. The laser light optical module of claim 2, wherein the first mirror comprises a first joint surface, the second mirror comprises a second joint surface; and when the laser light module is operated In a high beam mode, the first bonding surface of the first mirror and the second bonding surface of the second mirror are tightly coupled to form an elliptical shape. The laser light optical module of claim 2, wherein when the laser light optical module is operated in a low beam mode, the transmission member drives the support rod to drive the first mirror along the longitudinal direction Moving the axial direction upwards, separating the first mirror from the second mirror, and then the support rod drives the first mirror to move backward along the horizontal axis direction, and finally the support rod drives the first mirror again Moving downward along the longitudinal axis causes the first mirror to move to the rear side of the second mirror. The laser light optical module of claim 2, wherein the first mirror and the second mirror are respectively semi-elliptical reflective lenses. The laser light optical module of claim 2, wherein the first joint surface of the first mirror and the second joint surface of the second mirror are complementary surfaces. A laser lamp system consisting of six optical modules, and is divided into three optical modules and three optical modules in the upper half, at least one The optical module comprises: a laser light source for generating a laser beam; a convex lens located on a transmission path of the laser beam generated by the laser light source to focus the laser beam; a substrate The surface of the phosphor powder layer is disposed on the transmission path of the convex lens after focusing the laser beam, the phosphor powder layer comprises yellow phosphor powder; a mirror group disposed on the substrate and the phosphor powder a transmission path of the laser beam reflected by the layer; a plurality of support rods disposed on a rear side of the mirror group and configured to support the mirror group; a transmission member disposed on a rear side of the mirror group And connecting the support rod, and driving the support rod to change a light reflecting surface of the mirror group through the transmission member, thereby changing a light field of the optical module of the laser light. The laser light system of claim 7, wherein when the laser light optical module is operated in a high beam mode, the optical modules are turned on, and the first mirror and the first mirror The second mirrors are tightly coupled to form an elliptical group of mirrors. The laser light system of claim 7, wherein when the laser light optical module is to be operated in a low beam mode, the optical modules of the upper half are turned off, and the optical module is turned off. The optical modules of the lower half are in a light-on state, and the transmission member drives the support rod to move the first mirror upward along the longitudinal axis, and separate the first mirror from the second mirror Then, the support rod drives the first mirror to move backward along the horizontal axis direction, and finally the support rod further drives the first mirror to move downward along the longitudinal axis, so that the first mirror moves to the first The rear side of the mirror. The laser headlight system of claim 7, wherein the first mirror and the second mirror are respectively semi-elliptical reflecting lenses. The laser light system of claim 7, wherein the first joint surface of the first mirror and the second joint surface of the second mirror are complementary surfaces.