Projection system and light pipe thereof

Abstract

The invention relates to a projection system and an optical pipe of the system, wherein, the optical pipe comprises an optical pipe body and a first strengthened element; the optical pipe body has an internal surface and an external surface with the internal surface formed into an optical channel; the first strengthened element is arranged on the external surface of the optical pipe body. The invention also discloses a projection system which comprises a light source, a color wheel component and an optical pipe. The invention has better structural strength.

Description

technical field [0001] The invention relates to a display system and its light guide, in particular to a projection system and its light guide. Background technique [0002] Due to the multiple requirements of large display area, miniaturization and lightweight systems, image projection systems have become one of the most popular sub-items in the optoelectronic industry. [0003] see figure 1 As shown, the image projection system is referred to as the projection system 1 here for short, and it has a light source 10, a color wheel assembly 11, a light guide (Light Tunnel) 12, a lens assembly 13, a digital micro-mirror device (Digital Micro-mirror) Device, DMD) 14 and a projection unit 15. The light source 10 emits light to the color wheel assembly 11 and then enters the light guide 12, and then focuses on the digital micromirror device 14 through the lens assembly 13, and controls the complex micromirrors on the digital micromirror device 14 by driving electrodes (not shown...

AI Technical Summary

Problems solved by technology

[0005] However, since a space for the adhesive 122 must be left between the optical elements 121 and the optical elements 121, the bearing surface between the optical elements 121 is relatively small (such as figure 2 As shown in S), when the light guide 12 is impacted by an external force, each optical element 121 may be separated due to insufficient structural strength, thereby affecting the performance of the light guide 12

In addition, since the temperature of the light beam emitted by the light source 10 is quite high, the ambient temperature is relatively increased, causing the adhesive 122 of the light guide 12 adjacent to the light source 10 to easily deteriorate and become brittle, which also leads to insufficient structural strength of the optical element 121 of the light guide 12. the phenomenon of separation

[0006] It can be seen that the above-mentioned existing projection system and its light guide obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously related. The problem that the industry is eager to solve

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