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Partition projection device and light source units and application thereof

A technology of a light source unit and a projection device, which is applied in the field of TOF detection, and can solve problems such as high power consumption of the projection device and limitations on the development of detection equipment

Pending Publication Date: 2021-06-15
SHANGHAI NORTH OCEAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many problems in the practical application of the traditional detection equipment, for example, when the detection is realized, the power consumption of the projection device is high, which limits the development of dTOF-based detection equipment in practical applications

Method used

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  • Partition projection device and light source units and application thereof
  • Partition projection device and light source units and application thereof
  • Partition projection device and light source units and application thereof

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Embodiment Construction

[0099] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0100] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention...

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Abstract

The invention discloses a partition projection device and light source units and application thereof. The partition projection device comprises a plurality of light source units arranged in partitions and light modulation elements, wherein the light modulation elements correspond to the light source units, the light modulation elements are used for modulating light emitted by the light source units in different partitions to form specific light field distribution, so that a receiving device receives reflected light, the light modulation elements are arranged on the light source units to enable the receiving device to receive reflected light, the light modulation elements are provided with a plurality of light modulation surfaces which are arranged in a subregion mode, the light modulation surfaces correspond to the light source units, and light emitted by the light source units in each subregion is modulated by the corresponding light modulation surface to evenly illuminate the corresponding region. Compared with traditional detection equipment, the detection equipment applying the partition projection device can achieve long-distance detection under low power consumption.

Description

technical field [0001] The invention relates to the field of TOF detection, and further relates to a partition projection device, a light source unit and applications thereof. Background technique [0002] TOF (Time of Flight) is a time-of-flight-based technology. Its advantages such as small size, low error, direct output of depth data and strong anti-interference have attracted wide attention and applications in industries such as smartphones. [0003] At present, TOF is divided into two types, one is direct ranging dTOF, which determines the detection distance by emitting and receiving light and measuring the time of flight of photons; the other is the more mature indirect ranging iTOF on the market, which measures The phase difference between the transmitted waveform and the received waveform is converted to the flight time to determine the detection distance. Compared with iTOF, dTOF can directly determine the detection distance by measuring the photon flight time. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/894G01S7/481G02B27/09
CPCG01S17/08G01S17/894G01S7/481G01S7/4815G02B27/0927G02B27/0961G02B27/0944
Inventor 孟玉凰黄河楼歆晔郑旭君林涛
Owner SHANGHAI NORTH OCEAN TECH CO LTD
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