Optical sheet wheel, light source system and projection system

Abstract

The embodiment of the invention discloses an optical sheet rotating wheel, a light source system and a projection system. The optical sheet rotating wheel includes a rotating shaft and a fixed surface fixed on the rotating shaft; The outer diameter of the optical sheet is larger than the outer diameter of the fixed surface; the fixed surface includes two hollow areas, and each hollow area is equipped with a dispensing area and a beam group, and each dispensing area only passes through the beam group and the non-hollowed out area. The areas are connected and fixed, and the beam group includes at least one beam; the optical device is fixed to the fixed surface only by bonding with the dispensing area; the stiffness of the beam group in each hollow area along the radial direction passing through the center of the dispensing area The coefficient is less than the first predetermined value, so that when the branch beam group is deformed under the predetermined temperature difference, the stress on the optical device along the radial direction through the dispensing area is less than or equal to the critical value, so that the stress on the optical device is less than the stress that causes it to break. Stress critical value. The invention can provide an optical sheet rotating wheel which prevents the optical sheet from being pulled.

Description

technical field [0001] The invention relates to the technical field of illumination and display, in particular to an optical sheet wheel, a light source system and a projection system. Background technique [0002] The function of the color wheel in the DLP (Digital Light Processing) projector is the separation and processing of colors, and the separation and filtering of colors by the color wheel needs to be realized through the high-speed operation of the color wheel. [0003] Disc-shaped filter wheels of the prior art such as Figure 1A and Figure 1B as shown, Figure 1A is a structural schematic diagram of a filter wheel in the prior art, Figure 1B yes Figure 1A Top view of the filter wheel shown. The filter wheel 100 includes a filter 110 and a driving device for driving the filter 110 to rotate. The driving device includes a rotating shaft 121 and a bracket 122 fixed on the rotating shaft. The bracket 122 is ring-shaped, and the ring is arranged on the rotating s...

AI Technical Summary

Problems solved by technology

However, the optical filter 110 will absorb part of the light during the working process, or other working parts will generate heat so that the temperature near the filter wheel 100 is relatively high, thereby causing the optical filter 110 and the support of the rotating shaft 121 to be heated

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