Small-light-spot optical fiber cantilever and scanning light imaging display device
A small spot and optical fiber technology, applied in optics, optical components, instruments, etc., can solve problems affecting scanning performance, self-focusing lens self-heavyness, etc., and achieve the goals of improving imaging resolution, reducing spot size, and reducing pixel size Effect
Pending Publication Date: 2020-10-09
CHENGDU IDEALSEE TECH
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Problems solved by technology
Self-focusing lens: No imaging objective lens is required, and imaging is directly performed on the projection surface, but due to the heavy weight of the self-focusing lens, the scanning performance is affected
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0036]The inventors found in the research, such as figure 1 As shown in the figure, the schematic diagram of the optical path of the central field of view is shown in the figure. In order to better illustrate the imaging process, figure 1 The optical fiber 10 and the light spot 30 are enlarged schematically (the combination of the two and the projection objective lens 20 is not proportionally enlarged), and the optical fiber 10 in the figure is a schematic cross-se...
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Abstract
The invention discloses a small-spot optical fiber cantilever, which comprises a fiber core and a cladding, and is characterized in that the fiber core comprises a fiber core body part integrally formed and coaxially connected in sequence from back to front by taking the light beam emitting direction of the optical fiber cantilever as the front, and a fiber core microstructure part used for reducing the size of the end surface of the fiber core or has a focusing effect on light beams in the fiber core. The invention further discloses a scanning light imaging display device adopting the small-light-spot optical fiber cantilever. By arranging the fiber core microstructure part which reduces the size of the end face of the fiber core or has a focusing effect on light beams in the fiber core,the size of light spots is reduced, the size of pixels passing through the projection objective lens is further reduced, and the imaging resolution is improved.
Description
technical field [0001] The invention relates to the technical field of optical fiber scanning display, in particular to a small-spot optical fiber cantilever and a scanning light imaging display device. Background technique [0002] Optical fiber scanning display is a display technology that uses piezoelectric actuators to control the swing of optical fibers to emit an image. The image displayed by this technology has sharp and saturated colors, high contrast, and high brightness. The most important thing is that it is used as a scanning display unit. Optical imaging display devices are very small in size. [0003] In the optical fiber scanning display technology, there are many factors that affect the final imaging quality, such as: driving frequency, optical fiber swing, light spot size, etc. Among them, the size of the light spot determines the pixel size of the outgoing image. In the final displayed image, the smaller the pixel size, the denser the pixels can be arrange...
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IPC IPC(8): G02B26/10G02B26/08
CPCG02B26/103G02B26/0858
Inventor 不公告发明人
Owner CHENGDU IDEALSEE TECH