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Scanning actuator and optical fiber scanner

An actuator and scanner technology, applied in the field of scanning display, can solve the problems of image distortion and uncontrollable optical fiber swing trajectory, and achieve the effects of less distortion, stable scanning process, and high controllability

Pending Publication Date: 2022-04-22
CHENGDU IDEALSEE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the swing trajectory of the optical fiber is uncontrollable, which further causes the image output by the optical fiber scanning to be distorted

Method used

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  • Scanning actuator and optical fiber scanner
  • Scanning actuator and optical fiber scanner
  • Scanning actuator and optical fiber scanner

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Embodiment Construction

[0044] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0045] Illustrative scan display module

[0046] Such as Figure 2a As shown, it is an illustrative scanning display module in this application, which mainly includes:

[0047] A processor 100 , a laser group 110 , a fiber scanner 120 , a transmission fiber 130 , a light source modulation circuit 140 , a scanning driving circuit 150 and a beam combining unit 160 . in:

[0048] The processor 100 may be a graphics processing unit (Graphics Processing Unit, GPU), a central processing unit (Central Processing Unit, CPU) or other chips or circuits with control fu...

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Abstract

The embodiment of the invention discloses a scanning actuator and an optical fiber scanner, the scanning actuator at least comprises an actuating base body and an electrode used for driving, the actuating base body has a set length in the axial direction from the rear end to the front end, the rear end is used as a fixed end, and the electrode is used for driving the actuating base body. A plurality of actuating arms which are mutually encircled and separated are formed in the axial direction of the actuating base body, the electrodes are distributed on the surface of each actuating arm in the axial direction, the front ends of the actuating arms are connected with one another through connecting structures, and during working, each actuating arm vibrates according to the set direction and the set frequency under the action of the electrodes. And the connecting structure is jointly driven to vibrate. Compared with an existing scanning actuator with a fast and slow axis structure, the optical fiber scanner manufactured by the scanning actuator in the scheme of the invention has the advantages that the controllability of the scanning track is higher, the scanning process is more stable, and the distortion of the scanning track is not easy to occur.

Description

technical field [0001] The present application relates to the technical field of scanning display, in particular to a scanning actuator and an optical fiber scanner. Background technique [0002] As an emerging display technology, scanning display imaging can be used in various display scenarios such as projection display and near-eye display. [0003] Scanning display imaging can be realized by a scanning display module such as a digital micromirror device (Digital Micromirror Device, DMD) or a fiber optic scanner. Compared with DMDs, fiber optic scanners are smaller, cheaper, and easier to integrate. [0004] Existing optical fiber scanners mainly include: a scanning actuator capable of vibrating in two-dimensional directions, and an optical fiber that sweeps and emits light driven by the scanning actuator. figure 1 An exemplary structure of an optical fiber scanner is shown, and the scanning actuator includes a slow axis, an isolation part, and a fast axis in sequence f...

Claims

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Application Information

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IPC IPC(8): G02B26/10
CPCG02B26/103
Inventor 不公告发明人
Owner CHENGDU IDEALSEE TECH
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