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Diffusion rotating device and projection device

一种旋转装置、投影装置的技术，应用在放映装置、光学、仪器等方向，能够解决无法优化、蓝光效率降低等问题，达到优化能量分布、良好光学效率的效果

Pending Publication Date: 2021-01-19
CORETRONIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, general spot shaping components cannot be optimized corresponding to different phosphor areas on the phosphor wheel, and the blue light laser expands the spot in order to match the energy density required by the phosphor area, resulting in a decrease in the efficiency of blue light

Method used

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  • Diffusion rotating device and projection device
  • Diffusion rotating device and projection device
  • Diffusion rotating device and projection device

Examples

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Embodiment Construction

[0020] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0021] figure 1 is a schematic diagram of a projection device according to the first embodiment of the present invention. Please refer to figure 1 , the projection device 200 of this embodiment is used to provide a projection beam PB, and the projection device 200 includes an illumination system 100 , at least one light valve 210 and a projection lens 220 . The illumination system 100 is used to emit an illumination beam IB. At least one light valve 210 is disposed on the transmission ...

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Abstract

The invention discloses a diffusion rotating device which is arranged on a transmission path of a light beam. The diffusion rotating device comprises a substrate, a rotating shaft and a driving element. The rotating shaft is connected to substrate. The driving element is connected to the rotating shaft and used for driving the rotating shaft to rotate. The substrate comprises a first diffusion region and an optical region which are adjacently arranged, the first diffusion region is provided with a plurality of first diffusion sub-regions, and each first diffusion sub-region extends along the circumferential direction of the substrate and the plurality of first diffusion sub-regions are concentrically arranged along the radial direction of the substrate; when the first diffusion region cutsinto a transmission path of a light beam, the light beam forms a first light spot on the first diffusion region of the substrate; in the radial direction of the substrate, the diffusivity of the first diffusion sub-region corresponding to the central part of the first light spot in the plurality of first diffusion sub-regions is greater than the diffusivity of the first diffusion sub-region corresponding to the edge part of the first light spot. A projection device is also provided. Therefore, the projection device applying the diffusion rotating device has good optical efficiency.

Description

technical field [0001] The present invention relates to a rotating device and an optical device, and particularly relates to a diffusion rotating device and a projection device. Background technique [0002] In the structure of the laser projector, it mainly uses the blue laser beam to irradiate the fluorescent powder area and the reflective area (or penetrating area) of the fluorescent wheel in order to output yellow light and blue light, and then passes through the laser beam in the projector. The filter element extracts the required color light (green light or / and red light) from the wide-band yellow light. In order to achieve the ideal energy distribution of the laser spot formed on the fluorescent wheel, the spot of the blue laser can be adjusted by the spot shaping element. However, general spot shaping components cannot be individually optimized corresponding to different phosphor regions on the phosphor wheel, and the blue light laser enlarges the spot to match the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/208G03B21/204G02B5/0263G02B26/008
Inventor 林诗豪许仲成
Owner CORETRONIC
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