Light guiding module and projection device provided with light guiding module

Abstract

The invention provides a light guiding module and a projection device provided with the light guiding module. The light guiding module comprises a light pipe module and a hook, wherein the light pipe module comprises a light pipe and a protection shell, the light pipe is used for guiding light inside the projection device, the protection shell is sleeved outside the light pipe, the hook is arranged on the protection shell and is provided with a first end and a second end, the first end is fixed on the protection shell, and the first end is wider than the second end. When the light pipe module is placed on a platform provided with a first groove, the second end of the hook is placed in the first groove in a movable mode. Due to the fact that the hook is designed to be with a gradually changing width, purposes of small friction force and low light pipe module adjusting difficulty are achieved.

Description

technical field [0001] The invention relates to a light guide module and a projection device with the light guide module, in particular to a light guide module with hooks with gradually changing widths and a projection device with the light guide module. Background technique [0002] Projection devices are currently one of the most popular sub-items in the optoelectronic industry, and their technologies can be roughly divided into cathode ray tubes (CRT), digital light processing (Digital Light Processing, DLP), reflective liquid crystal, and transmissive LCD and so on. Among them, the digital light source processor and the projection of the reflective liquid crystal type can use the light guide module to even out the brightness of the light. [0003] Such as figure 1 As shown, taking the digital light source processor (DLP) 1 as an example, the light beam emitted by the light source 11 first passes through an ultraviolet / red cut filter 12 (UV / IR Cut Filter) and a color wh...

AI Technical Summary

Problems solved by technology

[0005] However, the light pipe 14, the relay lens 15, the reflector 16, the digital micromirror chip 17, the control circuit 171, the projection lens 18 and the screen 19 are installed in the housing 2, so if the light pipe 14 is damaged Must be removed from housing 2 to replace

In addition, because the light pipe 14 is installed inside the casing 2, the position of the light pipe 14 in the casing 2 is less likely to be changed, so that it is not easy to assemble and adjust the light pipe 14 and the casing 2 during assembly. Affects the uniformity of light inside the shell

Furthermore, the heat generated during the operation of the light pipe 14 is not easy to dissipate from the housing 2, and it is also impossible to directly add a heat sink to improve the heat dissipation.

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