Title:
OPTICAL FIBER SCANNER AND PROJECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/192410
Kind Code:
A1
Abstract:
Disclosed are an optical fiber scanner and a projection apparatus. The optical fiber scanner comprises a housing (1), an optical fiber (2) enclosed in the housing (1), an actuator (3), and projection objective lenses (5), wherein the optical fiber (2) comprises a fiber core (23) and an inner cladding (22); the optical fiber (2) is fixed on the actuator (3), one end of the optical fiber (2) extends beyond the actuator (3) to form an optical fiber cantilever (21), and a fiber core end face (231) of a light-exiting end of the optical fiber cantilever (21) is recessed inwards to form a negative focal power, such that an equivalent light-emitting surface (6) of the fiber core end face (231) is reversely focused in the fiber core (23); and the projection objective lenses (5) are arranged on a light-exiting path of the optical fiber cantilever (21) and are used for focusing and imaging the equivalent light-emitting surface (6). The projection apparatus uses the optical fiber scanner, and due to the fact that the fiber core end face (231) of the optical fiber scanner is designed to be recessed inwards to form the negative focal power, the equivalent light-emitting surface (6) of the fiber core end face (231) is reversely focused in the fiber core (23), a virtual image with a projected area less than the end face (231) is formed, and the projection objective lenses (5) focus and image the equivalent light-emitting surface (6) to create small light spots, such that the resolution of the projection apparatus can be effectively improved.
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| WO/2020/134716 | OPTICAL SCANNING DEVICE AND ELECTRONIC IMAGING APPARATUS |
| JPH0610916 | [Name of invention] Optical scanning device |
| JP2001117043 | LIGHT DEFLECTOR |
Inventors:
WANG JIAZHOU (CN)
CHEN CHAO (CN)
SHEN DAWEI (CN)
CHEN CHAO (CN)
SHEN DAWEI (CN)
Application Number:
PCT/CN2020/078583
Publication Date:
October 01, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
CHENGDU IDEALSEE TECHNOLOGY CO LTD (CN)
International Classes:
G02B26/10; G02B6/02; G02B6/26
Domestic Patent References:
| WO2008111970A1 | 2008-09-18 |
Foreign References:
| CN109799609A | 2019-05-24 | |||
| US20180275396A1 | 2018-09-27 | |||
| CN207689757U | 2018-08-03 | |||
| CN207689756U | 2018-08-03 | |||
| CN103676142A | 2014-03-26 | |||
| US20180333054A1 | 2018-11-22 | |||
| CN101464557A | 2009-06-24 |
Attorney, Agent or Firm:
YUHONG INTELLECTUAL PROPERTY LAW FIRM (CN)
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