Time-of-flight depth camera

A depth camera and time technology, applied in the computer field, can solve the problem of lack of anti-ambient light performance time-of-flight depth camera, etc., to achieve the effect of improving anti-interference ability and reducing power consumption

Pending Publication Date: 2019-02-15
SHENZHEN ORBBEC
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of lacking a time-of-flight depth-of-flight camera with good anti-environm

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[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be used for either a fixing function or a circuit connecting function.

[0023] It is to be understood that the terms "length", "width", "upper", "lower", ...

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Abstract

The invention provides a time-of-flight depth camera, which includes a transmitting module used for transmitting a light beam, a collecting module used for collecting a reflected light beam, and a processing circuit connected with the transmitting module and the collecting module and used for calculating the time of flight between the transmitted light beam and the reflected light beam. The transmitting module includes a light source, a time light modulator and a space light modulator. The time light modulator is used for making the light source emit corresponding carrier beams with one time carrier signal. The space light modulator is used for modulating the carrier beams spatially to form non-flooding carrier beams and emitting the non-flooding carrier beams outward. The collecting module includes an array pixel unit and a lens unit. The lens unit is used for receiving and imaging at least part of the non-flooding carrier beams reflected by an object on at least part of the array pixel unit. Non-flooding carrier beams are formed through modulation of the light source by the time light modulator and the space light modulator, so as to enhance the anti-interference ability of the time-of-flight depth camera to ambient light and reduce power consumption.

Description

technical field [0001] The invention belongs to the technical field of computers, and more specifically relates to a time-of-flight depth camera. Background technique [0002] Time of flight (TOF) depth camera calculates the distance of an object by measuring the flight time of the beam in space. Due to its high precision and large measurement range, it is widely used in consumer electronics, unmanned vehicles, and AR. / VR and other fields. [0003] The traditional time-of-flight depth camera system includes a light source and a camera. The light source emits a flood light beam to the target space to provide illumination, and the camera images the reflected flood light beam. time to calculate the distance of the object. When using the time-of-flight depth camera for distance sensing, ambient light interference will affect the accuracy of the measurement. measurement error. [0004] In the existing technology, background light can be suppressed by adding optical methods s...

Claims

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Application Information

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IPC IPC(8): G01S17/10G01S7/481
CPCG01S7/481G01S17/10
Inventor 许星闫敏黄源浩肖振中刘龙
Owner SHENZHEN ORBBEC
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