Structured light emission module

Abstract

A structured light emission module includes a lens housing, a light emitting element disposed in the lens housing, and a lens disposed on the lens housing, wherein the light emitting element is mounted on the inner side wall of the lens housing, and the structured light emission module further includes a digital light source processor, which is disposed on the inner bottom wall of the lens housing and is used to reflect the light emitted by the light emitting element to the lens for emission. The structured light emission module saves related structures such as a reflective prism by mounting the light emitting element on the inner side wall of the lens housing and using the digital light source processor disposed on the inner bottom wall of the lens housing to change the emission direction of the light emitted by the light emitting element, thereby making the structure of the structured light emission module more compact.

Description

Technical Field

[0001] The present invention relates to the field of electronics, and in particular to a structured light emission module. Background Art

[0002] The facial recognition function of electronic devices generally uses a structured light emission module to emit light. The light-emitting element of a conventional structured light emission module is generally arranged at the bottom of the lens to face the lens at the lens, and a complex reflective prism structure is arranged inside the lens so that all the light emitted by the light-emitting element is emitted from the lens at the lens. However, the use of the reflective prism structure makes the structure of the structured light emission module large, which is not conducive to the miniaturization design of the module. Summary of the invention

[0003] In view of this, it is necessary to provide a structured light emission module with a small structure.

[0004] A structured light emission module includes a lens housing, a light-emitting element arranged in the lens housing, and a lens arranged on the lens housing, wherein the light-emitting element is mounted on the inner wall of the lens housing. The structured light emission module also includes a digital light source processor, which is arranged on the inner bottom wall of the lens housing and is used to reflect the light emitted by the light-emitting element to the lens output.

[0005] Furthermore, the lens housing includes a bottom, a peripheral side portion and a lens portion, the lens portion is arranged opposite to the bottom, the peripheral side portion connects the bottom and the lens portion and is jointly arranged with the bottom and the lens portion to form a receiving cavity; the lens is fixed to the lens portion, the digital light source processor is arranged on the inner side of the bottom, and the light-emitting element is installed on the inner side of the peripheral side portion.

[0006] Furthermore, the lens head is provided with an opening facing the bottom, and the lens is installed at the opening of the lens head to form a light exit port.

[0007] Furthermore, the inner wall of the peripheral side portion includes a vertical portion and an inclined portion, the vertical portion is connected to the bottom, the inclined portion is connected to the lens head, and the inclined portion faces the bottom; the light emitting element is mounted on the inclined portion.

[0008] Furthermore, the light emitting element may be fixed to the inner wall of the lens housing by solder or adhesive.

[0009] Furthermore, the structured light emission module also includes a control circuit, which is arranged on the inner side of the bottom, and the light-emitting element and the digital light source processor are electrically connected to the control circuit respectively.

[0010] Furthermore, an LDS circuit is formed on the inner wall of the peripheral side portion by laser direct forming, and the light emitting element is electrically connected to the control circuit via the LDS circuit.

[0011] Compared with the prior art, the structured light emission module of the present invention saves related structures such as reflective prisms by installing the light-emitting element on the inner wall of the lens housing and using the digital light source processor arranged on the inner bottom wall of the lens housing to change the emission direction of the light emitted by the light-emitting element, thereby making the structure of the structured light emission module more miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of a structured light emission module in an embodiment of the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the exploded structured light emission module shown in.

[0014] Figure 3 for Figure 1 A cross-sectional schematic diagram of the structured light emission module shown in .

[0015] Main component symbols

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[0018] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0022] The present invention provides a structured light emission module, including a lens housing, a light-emitting element arranged in the lens housing, and a lens arranged on the lens housing, wherein the light-emitting element is mounted on the inner side wall of the lens housing, and the structured light emission module also includes a digital light source processor, which is arranged on the inner bottom wall of the lens housing and is used to reflect the light emitted by the light-emitting element to the lens output.

[0023] Some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0024] See also Figures 1 to 3 The embodiment of the present invention provides a structured light emission module 100, which includes a lens housing 10, a lens 20, a light emitting element 30 and a digital light processing sensor (DLP Sensor) 40. The lens 20 is fixed at the lens opening of the lens housing 10 to form a light exit. The light emitting element 30 is fixed on the inner side wall of the lens housing 10. The digital light processing sensor 40 is arranged on the inner bottom wall of the lens housing 10 to reflect the light emitted by the light emitting element 30 to the lens 20 for exit.

[0025] The lens housing 10 includes a bottom 11, a peripheral side portion 12 and a lens portion 13. The lens portion 13 is arranged opposite to the bottom 11. The peripheral side portion 12 is a hollow annular body connected end to end. In this embodiment, the peripheral side portion 12 is formed by four square plates connected end to end. The peripheral side portion 12 connects the bottom 11 and the lens portion 13, and is jointly surrounded by the bottom 11 and the lens portion 13 to form a receiving cavity 14. The receiving cavity 14 is used to receive the light-emitting element 30, the digital light source processor 40, and other necessary components. The lens portion 13 is provided with an opening 131 facing the bottom 11.

[0026] The lens 20 is installed at the opening 131 of the lens portion 13 to form a light exit.

[0027] The light emitting element 30 is mounted on the inner wall of the peripheral side portion 12 of the lens housing 10. Specifically, the inner wall of the peripheral side portion 12 includes a vertical portion 121 and an inclined portion 122. The vertical portion 121 is connected to the bottom 11, the inclined portion 122 is connected to the lens head 13, and the inclined portion 122 faces the bottom 11. The light emitting element 30 is mounted on the inclined portion 122. Specifically, the light emitting element 30 can be fixed by solder or adhesive. The light emitting element 30 can be an LED or a vertical cavity surface emitting laser (VCSEL).

[0028] The structured light emission module 100 further includes a control circuit 50. The control circuit 50 is disposed on the inner side of the bottom 11. In this embodiment, the circuit board of the control circuit 50 is directly used as the bottom 11 of the lens housing 10. An LDS circuit 60 is also formed on the inner wall of the peripheral side portion 12 by laser direct structuring (LDS). The light emitting element 30 is electrically connected to the control circuit 50 via the LDS circuit 60.

[0029] The digital light source processor 40 is installed on the inner side of the bottom 11 and is electrically connected to the control circuit 50. The control circuit 50 controls the tilt angle and deflection time of the digital micro-mirror device (DMD) on the digital light source processor 40, and can reflect the light emitted by the light emitting element 30 to the lens 20 through different optical paths, and then hit the object.

[0030] Compared with the prior art, the structured light emission module 100 of the present invention installs the light emitting element 30 on the inner wall of the lens housing 10, and uses the digital light source processor 40 arranged on the inner bottom wall of the lens housing 10 to change the emission direction of the light emitted by the light emitting element 30, thereby saving related structures such as a reflective prism, thereby making the structure of the structured light emission module 100 more miniaturized.

[0031] In addition, the structured light emission module 100 uses the digital light source processor 40 as a reflector and controls the tilt angle and deflection time of the digital micromirror chip on the digital light source processor 40 to reflect the light emitted by the light emitting element 30 to the lens 20 via different optical paths.

[0032] It is understandable that a person skilled in the art can make other corresponding changes and modifications based on the technical concept of the present invention, and all these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A structured light emission module, comprising a lens housing, a light emitting element disposed in the lens housing, and a lens disposed on the lens housing, characterized in that: The light emitting element is mounted on the inner side wall of the lens housing, and the structured light emission module further comprises a digital light source processor, which is arranged on the inner bottom wall of the lens housing and is used to reflect the light emitted by the light emitting element to the lens output; The lens housing comprises a bottom, a peripheral side portion and a lens portion, wherein the lens portion is arranged opposite to the bottom, the peripheral side portion connects the bottom and the lens portion and is surrounded together with the bottom and the lens portion to form a receiving cavity; the lens is fixed to the lens portion, the digital light source processor is arranged on the inner side of the bottom, and the light emitting element is installed on the inner side of the peripheral side portion; The inner wall of the peripheral side portion includes a vertical portion and an inclined portion, wherein the vertical portion is connected to the bottom portion, the inclined portion is connected to the lens portion, and the inclined portion faces the bottom portion; and the light emitting element is mounted on the inclined portion.

2. The structured light emission module according to claim 1, wherein: The lens head is provided with an opening facing the bottom, and the lens is installed at the opening of the lens head to form a light exit port.

3. The structured light emission module according to claim 1, wherein: The light emitting element may be fixed to the inner wall of the lens housing by solder or adhesive.

4. The structured light emission module according to claim 1, wherein: The structured light emission module further includes a control circuit, which is disposed on the inner side of the bottom. The light emitting element and the digital light source processor are electrically connected to the control circuit respectively.

5. The structured light emission module according to claim 4, characterized in that: An LDS circuit is formed on the inner wall of the peripheral side portion by laser direct forming, and the light emitting element is electrically connected to the control circuit via the LDS circuit.

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