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CN-224231975-U - Prevent cluster light degree of depth module and electronic equipment

CN224231975UCN 224231975 UCN224231975 UCN 224231975UCN-224231975-U

Abstract

The anti-light-cross depth module comprises a shell, a projector, a receiver, a first cover plate, a second cover plate and a projector, wherein the projector is used for projecting infrared light, the receiver is used for receiving reflection signals of the infrared light, the first cover plate is positioned in front of the projector and is fixed on the shell, the second cover plate is positioned in front of the receiver and is fixed on the shell, and the projector and the receiver are positioned on the same side face of the shell. The utility model reduces the light-crossing phenomenon and has the advantages of low cost and good partition effect.

Inventors

  • ZHANG YONG
  • LV FANGLU
  • ZHU LI
  • WANG BO

Assignees

  • 深圳市光鉴科技有限公司
  • 重庆光鉴傲深科技有限公司

Dates

Publication Date
20260512
Application Date
20231218

Claims (10)

  1. 1. The utility model provides a prevent cluster light degree of depth module which characterized in that includes: A housing; A projector for projecting infrared light; A receiver for receiving the reflected signal of the infrared light; The first cover plate is positioned in front of the projector and is fixed on the shell; The second cover plate is positioned in front of the receiver and is fixed on the shell; the projector and the receiver are located on the same side of the housing.
  2. 2. The anti-crosstalk depth module of claim 1, wherein the housing has a first recess for securing the first cover plate.
  3. 3. The anti-light-crosstalk depth module of claim 1, wherein the housing has a second groove for securing the second cover plate.
  4. 4. The anti-glare depth module of claim 1 wherein a first partition is provided between the first cover and the second cover.
  5. 5. The anti-glare depth module of claim 1 wherein there is a second break between the projector and the receiver.
  6. 6. The anti-glare depth module of claim 1 wherein the first cover plate is flush with the second cover plate.
  7. 7. The anti-crosstalk depth module of claim 1, wherein the first cover plate and the second cover plate are both transparent to infrared light.
  8. 8. The anti-light-crossing depth module of claim 1, wherein sealing rings are arranged under the first cover plate and the second cover plate.
  9. 9. The anti-crosstalk depth module of claim 1, wherein only the light paths of the first cover plate and the second cover plate are transparent, and the other areas are opaque.
  10. 10. An electronic device comprising an anti-crosstalk depth module according to any one of claims 1 to 9.

Description

Prevent cluster light degree of depth module and electronic equipment Technical Field The utility model relates to the technical field of depth cameras, in particular to a light-crosstalk-preventing depth module and electronic equipment. Background A depth camera is a type of camera that can measure the distance of an object to the camera, also known as a 3D camera. Compared with the traditional RGB color common camera, the depth camera can more accurately sense the surrounding environment and change, and has a plurality of application scenes, such as unmanned, robot, intelligent home and the like. There are mainly four categories of depth cameras, TOF (Time-of-Flight), structured light (Structured-light), binocular vision (Stereo), and passive vision, respectively. TOF depth cameras calculate distance by measuring the time from the emission of a light pulse to the reflection back to the receiver. Representative techniques include phase and time, which are techniques for determining depth information by calculating the phase or time difference of light reflections. The structured light depth camera mainly comprises a projector and a camera, wherein the projector actively emits IR infrared light invisible to naked eyes to the surface of a measured object, then one or more cameras shoot the measured object to collect structured light images, data are sent to a computing unit, and position and depth information are obtained through calculation according to a triangulation principle, so that 3D reconstruction is realized. There are various projection pattern modes, such as a sinusoidal stripe phase shift method, binary coded gray code, phase shift method+gray code, etc. Binocular vision depth camera the same object is photographed from different angles by two cameras and then the difference between the two images is calculated to obtain depth information. Passive visual depth cameras acquire depth information by analyzing reflected light from the surface of an object. For active vision depth cameras, including TOF (Time-of-Flight), structured-light (Structured-light), and binocular vision (Stereo), active light technology is adopted to emit active light to irradiate a target object, and depth information is generated by receiving reflected signals. A transparent panel is typically covered on the depth camera surface for light exit. However, due to the effects of reflection, refraction and the like of the transparent panel, the active light not only comprises the effect of the inside of the transparent panel on the light path, but also comprises the effect of the surface of the transparent panel on the light path, and part of the light always directly irradiates the receiver, so that the signal received by the receiver is disturbed, and the phenomenon of light crosstalk is the phenomenon of light crosstalk. The crosstalk phenomenon causes a great decrease in the data acquisition capability of the depth camera for a partial area, and even effective data cannot be obtained. Whereas in the prior art only the reflection of light by the transparent panel surface is considered, and the transmission of light inside the transparent panel is not considered. The foregoing background is only for the purpose of providing an understanding of the inventive concepts and technical aspects of the present utility model and is not necessarily prior art to the present application and is not intended to be used as an aid in the evaluation of the novelty and creativity of the present utility model in the event that no clear evidence indicates that such is already disclosed at the date of filing of the present application. Disclosure of utility model Therefore, the light emitted by the projector cannot enter the receiver through the cover plate by arranging the first cover plate and the second cover plate on the projector and the receiver respectively, so that the light-emitting device has the advantages of reducing the light-emitting phenomenon, along with low cost and good partition effect. In a first aspect, the present utility model provides an anti-crosstalk depth module, which is characterized by comprising: A housing; A projector for projecting infrared light; A receiver for receiving the reflected signal of the infrared light; The first cover plate is positioned in front of the projector and is fixed on the shell; The second cover plate is positioned in front of the receiver and is fixed on the shell; the projector and the receiver are located on the same side of the housing. Optionally, the anti-light-cross depth module is characterized in that a first groove is formed in the shell and used for fixing the first cover plate. Optionally, the anti-light-cross depth module is characterized in that a second groove is formed in the shell and used for fixing the second cover plate. Optionally, the anti-light-crossing depth module is characterized in that a first partition is arranged between the first cover plate and the second cove