Beam splitter

Abstract

The invention relates to a light dividing device that includes a power component, a driving component, and a filter component. The rotator and a first connecting section are contained in the power component, and the rotator connects to the first connecting section, the driving component contains the second and the third connecting section. The second connection section connects to the first connecting section. The filter component has a filter element and a fourth connecting section that is set at the side of filter element and connecting to the third connecting section. The rotator would drive the second and the third connection sections to drive the fourth connecting section and the filter element.

Description

Technical field [0001] The invention relates to a light splitting device, in particular to a light splitting device of a projection system. Background technique [0002] Due to the multiple needs 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 first figure 1 As shown, in the projection system 1, the light emitted by the light source 11 is condensed by the prism 12, passes through the spectroscopic device 13 with the red, green and blue filter elements 131, and passes through the light pipe (Light Pipe) 14, and then , The light is reflected on the digital micro-mirror device (DMD) 16 by the mirror 15, and then the light is projected to the projection lens 17 through the reflection, and finally the image is displayed on the screen 18. Generally speaking, the light source 11 in the projection system 1 generates a high temperature, and the temperature ...

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, the filter element 131 of the currently known spectroscopic device 13 must be rotated by the motor 132 in the spectroscopic device 13 to perform light splitting, but the motor 132 is a high-cost component, which will produce Under high temperature and high speed operation of the motor 132, the lubricating oil on the motor 132 is easily evaporated, resulting in a shortened service life of the motor 132

In addition, since the filter element 131 is fixed on the shaft cover 1321 of the motor 132 by adhesive, when one of the motor 132 or the filter element 131 is damaged, the whole set must be discarded, and another good element cannot be recycled. Repeated use, thus increasing production costs

[0006] Therefore, how to provide a spectroscopic device that can save one motor to reduce the overall production cost of the projection system, and can solve the disadvantage that the entire set must be scrapped when one of the filter element and the motor is damaged is an urgent issue for the industry today.

[0007] It can be seen that the above-mentioned existing spectroscopic device obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the problems existing in the optical splitting device, 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 problems. This is obviously a problem. Issues that relevant industry players are eager to solve

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