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Polarized light module and depth recognition device

A polarized light and depth technology, applied in the field of optics, can solve problems such as application distance and large recognition quality limitations, and achieve the effects of depth recognition, quality assurance, and imaging quality

Pending Publication Date: 2021-02-05
DONGGUAN VISIONX-TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the above reasons, the existing deep recognition technology has great limitations in application distance and recognition quality

Method used

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  • Polarized light module and depth recognition device
  • Polarized light module and depth recognition device
  • Polarized light module and depth recognition device

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0037] see figure 1 , figure 1 It is a schematic structural diagram of a depth imaging device 100 provided in an embodiment of the present application.

[0038] In this embodiment, the depth imaging device 100 may include: a housing 110 , a substrate 120 , a transmitter 210 and a receiver 220 (here the transmitter 210 and the receiver 220 may be regarded as a polarized light module 200 ). The substrate 120 may be disposed inside the casing 110, and the transmitter 210 and the receiver 220 may be disposed at a first position and a second position of the substrate 120, respectively.

[0039] The shape and structure of the substrate 120 can be set according to actual needs. Here, the first position and the second position of the substrate 120 are mainly introduced. The transmitter 210 is set at the ...

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Abstract

The invention provides a polarized light module and a depth recognition device. The polarized light module comprises an emitter and a receiver; the emitter is used for emitting linearly polarized light in a first wavelength range; the receiver comprises an image sensor, a lens structure and a light filtering structure; the lens structure and the light filtering structure are arranged in front of the image sensor; light reaches the image sensor after passing through the lens structure and the light filtering structure; the light filtering structure is used for filtering ambient light, except linearly polarized light, in the light; the image sensor receives the light filtered by the light filtering structure, and the unfiltered light comprises the linearly polarized light and the ambient light. Therefore, the light received by the image sensor is less interfered by the ambient light, and the receiving effect of the receiver can be improved under the condition that the power is not improved, so that the imaging quality of an image is ensured, and the depth recognition is facilitated. Moreover, the light filtering structure can filter light in other directions in the ambient light, sothat the influence of the ambient light (namely noise) on the receiver is further reduced.

Description

technical field [0001] The present application relates to the field of optical technology, in particular, to a polarized light module and a depth recognition device. Background technique [0002] With the advancement of science and technology, deep recognition technology is more and more widely used, such as mobile phone unlocking, face payment, security gates, security monitoring, human-computer interaction, gesture recognition, etc. However, the depth recognition technology is limited by the power of the device (due to the existence of problems such as heat dissipation and human eye protection, the power of the transmitter cannot be increased without limit), therefore, the depth recognition technology is relatively limited in application distance, and is usually applied to shorter distance scenarios (mobile phone unlocking, face payment, security gates, security monitoring, etc.). [0003] Moreover, the application of depth recognition technology will be more or less dist...

Claims

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Application Information

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IPC IPC(8): G02B27/10
CPCG02B27/1006
Inventor 彭天才戴书麟刘风雷郝春艳
Owner DONGGUAN VISIONX-TECH CO LTD
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