Depth detection transmitting device, depth detection receiving device and electronic equipment

Abstract

The invention relates to a depth detection transmitting device and electronic equipment. The transmitting device comprises a light source which comprises a light-transmitting array composed of N light-transmitting units and is used for transmitting N beams of light; and a transmitting lens used for collimating the N beams of light, wherein the transmitting lens is used for projecting the N beams of light to a first target object to form a floodlight signal and projecting the N beams of light to a second target object to form a speckle light signal, the distance between the first target object and the transmitting lens is within a first distance, the distance between the second target object and the emission lens is beyond the first distance, and the floodlight signal and the speckle light signal are used for acquiring depth information of the first target object and the second target object. According to the depth detection transmitting device, the special transmitting lens is designed, so that the transmitting device can obtain the depth information of a plurality of target objects within and beyond a certain distance at the same time, two different optical signals can be emitted only through one set of optical path system, and the working efficiency of the depth detection transmitting device is improved.

Description

technical field [0001] The present application relates to the technical field of depth measurement, and more particularly, to a depth detection transmitter, receiver and electronic equipment. Background technique [0002] 3D TOF (Time of flight, TOF), as the current mainstream three-dimensional depth measurement method, obtains the depth information of the target object by measuring the flight time of the signal light in space. The TOF depth detection device consists of a transmitting device and a receiving device. The transmitting device modulates light to form a modulated optical signal on the surface of the target object, and the receiving device receives the depth optical signal carrying depth information returned by the target object, and according to the phase of the two optical signals The depth information of the target object is calculated by parameters such as difference or time difference. As a key component of high-end camera systems, it has been widely used in ...

AI Technical Summary

Problems solved by technology

Among them, Flood TOF has a relatively uniform distribution of emitted light energy in the entire field of view, so the resolution of the captured depth image is high, but because the energy distribution is scattered, the measurement distance is limited. If you want to take into account the measurement distance of more than 3 meters It requires a very large transmission power and consumes a lot of power

Spot TOF decomposes the emission energy into several beams with very concentrated energy, the measurement distance can reach more than 5m, and can achieve high accuracy at a very low power consumption level, but because the beams are relatively sparse, the depth map resolution low rate

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