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Diffuser, time-of-flight transmitter and electronic device

A time-of-flight and diffuser technology, applied in the field of optical lenses, can solve problems such as fringe strength and uneven optical energy distribution

Inactive Publication Date: 2020-06-16
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a diffuser, a time-of-flight emitter and electronic equipment. By designing a unique arrangement of microlenses in the diffuser, it effectively solves the fringe phenomenon of diffraction superimposition in the projected light field and the fringe phenomenon on the screen. Problems with uneven optical energy distribution

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  • Diffuser, time-of-flight transmitter and electronic device
  • Diffuser, time-of-flight transmitter and electronic device
  • Diffuser, time-of-flight transmitter and electronic device

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Embodiment Construction

[0036] In order to more clearly illustrate the technical solutions in the embodiment of the present application or the background art, the following will describe the drawings that need to be used in the embodiment of the present application or the background art.

[0037] The application provides a diffuser, a time-of-flight transmitter and electronic equipment, the electronic equipment ( figure 1 Not shown) can be equipment such as a vehicle, a mobile phone module, etc. Such as figure 1 as shown, figure 1 A schematic diagram of the structure of the diffuser located in the time-of-flight transmitter is drawn. The time-of-flight transmitter 1 mainly includes a vertical cavity surface emitting laser 2 and a diffuser 3. The laser energy emitted by the vertical cavity surface emitting laser 2 enters the diffuser 3. After microstructuring, various light field distributions are projected. The multiple microlenses of the diffuser 3 are used to modulate the laser light emitted by ...

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Abstract

The invention relates to a diffuser and a time-of-flight transmitter. The diffuser includes a plurality of micro-lenses arranged on a reference plane; a reference plane comprises at least two rectangular areas, and every two adjacent rectangular areas are in butt joint through a first common edge. Each rectangular region comprises a plurality of sub-areas which are formed by dividing one or more parallel first dividing lines; each sub-area comprises a plurality of sub-units formed by dividing one or more parallel second dividing lines and one or more parallel third dividing lines, the second dividing lines are parallel to the first dividing lines, and the third dividing lines are perpendicular to the second dividing lines; included angles are formed between the first dividing lines and thefirst common edges, the included angles of every two adjacent rectangular areas are the same in size, the micro-lenses are correspondingly arranged in the subunits, and the subunits in butt joint with the two sides of the first dividing lines are arranged in a staggered mode. The included angle is formed in the diffuser, and the micro-lenses are arranged in a staggered mode, so the diffraction foldover problem of a projected light field is solved.

Description

technical field [0001] The present application relates to the field of optical lenses, in particular to diffusers, time-of-flight emitters and electronic equipment. Background technique [0002] The Time-of-Flight (TOF) transmitter mainly includes a Vertical-Cavity Surface-Emitting Laser (VCSEL) and a diffuser (Diffuser). After the laser energy emitted by the vertical cavity surface emitting laser enters the microstructure of the diffuser, various light field distributions are projected. [0003] When the microlens of the diffuser is manufactured, each unit can be made into a neatly arranged array. The light-emitting point of the vertical cavity surface emitting laser belongs to the laser, and the light has a phase characteristic, and the light-emitting holes have a fixed array distribution, vertical The fixed array of cavity surface-emitting lasers and the array period of the overall arrangement of microlenses make the light field projected by such microlens products appea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B5/02
CPCG02B3/0037G02B5/021G02B5/0278
Inventor 陈冠宏吴木源李宗政冯坤亮
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH