WO2021203259A1

WO2021203259A1 - Illumination system

Info

Publication number: WO2021203259A1
Application number: PCT/CN2020/083638
Authority: WO
Inventors: 邱焕评; 王志宾; 高民彰
Original assignee: 天勤光电股份有限公司
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-10-14

Abstract

An illumination system, including at least an illumination module (10), which is provided with a light-emitting portion (12) at one end, the light-emitting portion (12) producing a first light beam (14); a reflecting apparatus (20), which is arranged on the path of the first light beam (14), and reflects a second light beam (24) after a reflective surface (22) of the reflecting apparatus (20) receives the first light beam (14); a light deflecting apparatus (30), which is arranged on the path of the second light beam (24), and reflects a third light beam (32) along an optical axis (50) after receiving the second light beam (24). The illumination module (10) and the reflecting apparatus (20) are respectively arranged on a same side of a horizontal plane (54) of the optical axis (50), and a first divergence angle (β1) formed by the first light beam (14) is 35-55 degrees, or the distance between the illumination module (10) and the reflecting apparatus (20) is set to be 5-10mm. A reasonable spatial configuration is achieved, so as to enable the miniaturization of the illumination system.

Description

Lighting system

Technical field

The present invention relates to an illumination system, in particular to an illumination system that uses a light deflecting device for reflection.

Background technique

In the current field of car lighting, digital mirror lighting technology has attracted attention because of its unique effects. Digital mirror lighting technology can project high-resolution lights onto the road to achieve many new functions, such as vehicle width display. That is, the driver can be informed of the width of the vehicle ahead.

However, in the process of assembling the current car lights using the digital micro-reflective chip DMD, the space structure design of the car lights is generally large because it still needs to be combined with other related components, which cannot be effectively reduced to achieve a miniaturized design. That is to say, the DMD is assembled in the projection equipment, considering how to save the assembly space and miniaturize the lighting system in the narrow space of the car lamp, which is the research direction of the present invention.

Summary of the invention

An object of the present invention is to provide a lighting system in which a DMD projection module can be configured in the process of assembling a car lamp, and the lighting module and the reflecting device are respectively arranged on the same side of a horizontal plane of the optical axis, so that the second A light beam forms a first divergence angle, or the distance between the lighting module and the reflecting device is set, so as to improve the utilization rate of the assembly space, thereby miniaturizing the lighting system.

In order to achieve the above objective, the present invention discloses a lighting system, which includes: at least one lighting module, one end of which is provided with a light emitting part, the light emitting part generates a first light beam; a reflection device, which is arranged on the first light beam After receiving the first light beam, a reflecting surface of the reflecting device reflects a second light beam; a light deflecting device is arranged on the path of the second light beam, and the light deflecting device receives the second light beam Then, a third light beam is reflected along an optical axis; wherein the illumination module and the reflection device are respectively arranged on the same side of a horizontal plane of the optical axis, and a first divergence angle formed by the first light beam is 35 ~55 degrees, in order to improve the utilization of the assembly space, and then miniaturize the lighting system.

In an embodiment of the present invention, it also discloses that it further includes a projection module which is arranged on the optical axis, one end of the projection module is provided with an incident surface, and the other end is provided with an exit surface, and the incident surface receives the first After the three beams, a fourth beam is projected from the exit surface.

In an embodiment of the present invention, it is also disclosed that a second divergence angle formed by the third light beam is 35 to 55 degrees.

In order to achieve the above objective, the present invention discloses an illuminating system, which includes at least one illuminating module, one end of which is provided with a light emitting portion, the light emitting portion generates a first light beam; a reflection device, which is arranged on the first light beam In the path, a reflective surface of the reflection device reflects a second light beam after receiving the first light beam; a light deflecting device is arranged on the path of the second light beam, after the light deflecting device receives the second light beam , Reflecting a third light beam along an optical axis; and a projection module, which is arranged on the optical axis, one end of the projection module is provided with an incident surface, and the other end is provided with an exit surface, and the incident surface receives the third beam Then, a fourth light beam is projected from the exit surface; wherein the illumination module and the reflection device are respectively arranged on the same side of a horizontal plane of the optical axis, the distance between the illumination module and the reflection device is a first distance, the The first distance is 5-10mm, so as to improve the utilization rate of the assembly space and further miniaturize the lighting system.

In an embodiment of the present invention, it is also disclosed that the distance between the light deflection device and the projection module is a second distance, the diameter of the projection module is a third distance, and the ratio of the second distance to the third distance is 0.35～1.67.

In an embodiment of the present invention, it is also disclosed that the second distance is 25-50 mm.

In an embodiment of the present invention, it is also disclosed that the third distance is 30-70 mm.

Description of the drawings

Figure 1: It is a front view 1 of the first embodiment of the lighting system of the present invention;

Figure 2: It is the second front view of the first embodiment of the lighting system of the present invention;

Figure 3: It is a partial left view of the second embodiment of the lighting system of the present invention;

Figure 4: It is a front view 1 of the second embodiment of the lighting system of the present invention; and

Fig. 5: It is the second front view of the second embodiment of the lighting system of the present invention.

Reference signs:

10 Lighting module

12 Light emitting department

14 First beam

20 Reflecting device

22 Reflective surface

24 The second beam

30 Optical deflection device

32 Third beam

40 Projection module

42 Incident surface

44 Exit surface

46 Fourth beam

50 Optical axis

54 Horizontal plane

a First distance

b Second distance

c Third distance

β1 First divergence angle

β2 Second divergence angle

Detailed ways

In order to enable your reviewer to have a further understanding and understanding of the features of the present invention and the effects achieved, the examples and detailed descriptions are provided here. The description is as follows:

In order to solve the problem that the lighting system cannot be miniaturized when the digital micromirror device (DMD) is assembled with the large space design of the well-known car lights, the present invention provides a lighting system to improve the traditional problems to be improved. The specific structure is as follows:

Please refer to FIGS. 1 to 3, which are

front views

1 and 2 of the first embodiment of the lighting system of the present invention, and a partial left view (with the light deflecting device omitted). As shown in the figure, the lighting system of the present invention includes: at least one lighting module 10, one end of which is provided with a light emitting portion 12; a reflection device 20, one side of which is provided with a reflection surface 22; One side of the lighting module 10 and the reflecting device 20.

Wherein, the light emitting portion 12 generates a first light beam 14; the reflecting device 20 is arranged on the path of the first light beam 14. After receiving the first light beam 14, the reflecting surface 22 of the reflecting device 20 reflects a second light beam 14 The light beam 24; the light deflection device 30 is arranged on the path of the second light beam 24, the light deflection device 30 receives the second light beam 24, and horizontally reflects a third light beam 32 along an optical axis 50; wherein, the illumination The module 10 and the reflecting device 20 are respectively arranged on the same side of a horizontal plane 54 of the optical axis 50.

The lighting module 10 of the present invention is provided with at least one first lens (not shown), and the first lens can be adjusted according to specific requirements. The illumination module 10 emits a light (not shown) from the inside to pass through the at least one first lens, according to the structure design of the at least one first lens (for example, a concave/convex lens with focusing and divergence effects), and the light emitting part 12 The first light beam 14 is generated so that the first light beam 14 forms a first divergence angle β1 (35 degrees to 55 degrees); wherein the lighting module 10 is set to an aperture of 1.2 to 1.8 (preferably 1.37), and the lighting module 10 And the reflecting device 20 are respectively arranged on the same side of the horizontal plane 54 of the optical axis 50, the light emitting portion 12 generates the first light beam 14, so that the first light beam 14 forms a first divergence angle β1 (35 degrees to 55 degrees) ), the first divergence angle β1 makes the reflection device 20 closer to the lighting module 10, thereby miniaturizing the lighting system.

The lighting system of the present invention further includes a projection module 40 which is arranged on the optical axis 50. One end of the projection module 40 is provided with an incident surface 42 and the other end is provided with an exit surface 44. The incident surface 42 receives the After the third light beam 32, a fourth light beam 46 is projected from the exit surface 44; wherein, the projection module 40 further includes at least one second lens (not shown), and the at least one second lens can be set according to specific requirements. Each is adjusted, and its structure and working function are the same as the at least one first lens set by the irradiation module 10. In addition, the first light beam 14, the second light beam 24, the third light beam 32, and the fourth light beam 46 are high-resolution pixel lights.

Please continue to refer to FIGS. 1 to 3. In this embodiment, the lighting module 10 emits the first light beam 14, and after being received by the reflection surface 22 of the reflection device 20, the second light beam 24 is reflected. The light deflection device 30 is disposed on the path of the second light beam 24, and the light deflection device 30 is a digital micromirror device (DMD), which reflects the third light beam 32 after receiving the second light beam 24; wherein , A second divergence angle β2 formed by the third light beam 32 is 35 degrees to 55 degrees. The projection module 40 is disposed on the path of the third light beam 32. After the incident surface 42 receives the third light beam 32, the fourth light beam is projected by the exit surface 44 through the structure of the at least one second lens itself. 46. Since then, the working mode of the lighting system of the present invention has been completed. By the illumination module 10 and the reflecting device 20 being arranged on the same side of the horizontal plane 54 where the optical axis 50 of the projection module 40 is located, the first light beam 14 forms the first divergence angle β1, and the illumination module 10 and The reflection device 20 is not within the fan-shaped irradiation area formed by the third light beam 32, which avoids the light source being blocked, and at the same time improves the utilization rate of the light source.

In the second embodiment of the present invention, please refer to FIGS. 4 and 5, which are front view 1 and front view 2 of the second embodiment of the lighting system of the present invention. As shown in the figure, the difference between this embodiment and the previous embodiment is that a first distance a from the center point of the reflecting device 20 to the center point of the front end of the lighting module 10 is 5-10 mm, and the light deflection device 30 The distance between the projection module 40 and the projection module 40 is a second distance b, the diameter of the projection module 40 is a third distance c, and the ratio of the second distance b to the third distance c is 0.35 to 1.67; The distance b is 25-50 mm, and the third distance c is 30-70 mm. By limiting the first distance a, in the limited space of the lighting system, the reflection efficiency can be improved to achieve the optimization of optical efficiency. In addition, by limiting the relationship between the second distance b and the third distance c, the best In the second embodiment of the present invention, the arrangement of other elements is the same as that in the first embodiment, so it will not be repeated here.

In summary, the lighting system of the present invention is configured to set the lighting module 10 and the reflecting device 20 on the same side of the horizontal plane 54 of the optical axis 50 so that the first light beam 14 forms the first divergence angle β1. Reasonable use of the narrow space for vehicle lamp assembly, by setting the positional relationship between the lighting module 10 and the reflecting device 20; or by setting the light deflecting device 30 and the projection module 40 according to a certain ratio, reduces the overall cost of the lighting system. Compared with the well-known technology, the lighting system in this case can also achieve a miniaturized assembly when the DMD projection module is assembled, and realize a reasonable space utilization.

Therefore, the present invention is truly novel, creative and available for industrial use. It should meet the patent application requirements of the Patent Law. It is undoubtedly that Yan filed an invention patent application in accordance with the law. I pray that the Bureau will grant the patent as soon as possible.

However, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. For example, all the equivalent changes and changes in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention All modifications shall be included in the scope of the claims of the present invention.

Claims

A lighting system, characterized in that it comprises:

At least one lighting module, one end of which is provided with a light emitting part, and the light emitting part generates a first light beam;

A reflection device arranged on the path of the first light beam, a reflection surface of the reflection device reflects a second light beam after receiving the first light beam; and

A light deflection device arranged on the path of the second light beam, the light deflection device reflects a third light beam along an optical axis after receiving the second light beam, and the light deflection device is a digital micro-mirror;

Wherein, the illumination module and the reflection device are respectively arranged on the same side of a horizontal plane of the optical axis, and a first divergence angle formed by the first light beam is 35-55 degrees.
5. The lighting system of claim 1, further comprising a projection module, the projection module is arranged on the optical axis, one end of the projection module is provided with an incident surface, and the other end is provided with an exit surface, the incident surface After receiving the third light beam, a fourth light beam is projected from the exit surface.
3. The lighting system of claim 1, wherein a second divergence angle formed by the third light beam is 35 to 55 degrees.
A lighting system, characterized in that it comprises:

At least one lighting module, one end of which is provided with a light emitting part, and the light emitting part generates a first light beam;

A reflection device, which is arranged on the path of the first light beam, and a reflection surface of the reflection device reflects a second light beam after receiving the first light beam;

A light deflection device arranged on the path of the second light beam, the light deflection device reflecting a third light beam along an optical axis after receiving the second light beam, the light deflection device being a digital micro mirror; and

A projection module, which is arranged on the optical axis, one end of the projection module is provided with an incident surface, and the other end is provided with an exit surface. After the incident surface receives the third light beam, the exit surface projects a fourth light beam;

Wherein, the lighting module and the reflecting device are respectively arranged on the same side of a horizontal plane of the optical axis, and the distance between the lighting module and the reflecting device is a first distance, and the first distance is 5-10 mm.
4. The lighting system of claim 4, wherein the distance between the light deflecting device and the projection module is a second distance, the diameter of the projection module is a third distance, and the second distance and the third distance The ratio is 0.35 to 1.67.
5. The lighting system of claim 5, wherein the second distance is 25-50 mm.
5. The lighting system of claim 5, wherein the third distance is 30-70 mm.
5. The lighting system of claim 4, wherein a second divergence angle formed by the third light beam is 35 to 55 degrees.