Lens adjusting structure and projection optic system

Abstract

The invention discloses a lens adjusting structure and a projection optic system. The lens adjusting structure is composed of a lens holder, a pedestal, a first pre-tightening element, a second pre-tightening element, an adjusting spring, and a fastener. The lens holder includes an adjusting part and a support part; a first guide hole and a second guide hole that are formed in the two sides of the support part are arranged on the adjusting part; and a first butt-joint element arranged between the first guide hole and the second guide hole is arranged on the lower surface of the adjusting part in a protruding mode. A first positioning element and a second positioning element are arranged on the pedestal; a penetrating opening arranged between the first positioning element and the second positioning element is formed in the pedestal; and a second butt-joint element arranged at one side of the penetrating opening is arranged in the penetrating opening. According to the invention, problems that the energy is lost and the brightness performance of the overall projection optic system is reduced due to deviation of the position of the laser convergence point relative to the phosphor coating of the fluorescence color wheel in the existing optical system can be solved.

Description

technical field [0001] The invention relates to an optical element adjustment structure and an optical system with the optical element adjustment structure, in particular to a lens adjustment structure and a projection optical system. Background technique [0002] The optical system is a system composed of various optical elements in a certain order. It is generally used for imaging or optical processing. It can meet a series of requirements and obtain a high-quality optical system that meets the needs. It is not a simple combination of several optical elements. The parameters of each optical element must be reasonably configured and properly determined. In the prior art, due to errors in optical path calculation, mechanical processing technology, assembly technology, etc., the deviation of the optical system on the optical path is often caused, thereby affecting the performance of the optical system. As an important optical element in the optical system, the lens's positio...

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Problems solved by technology

[0003] A projector is a device that can project images or videos onto a screen. The key to determining the quality of the projection often lies in the optical system of the projector. The projection optical system in the prior art has the following problems: because the focal point of the laser light is relative to the fluorescent color The position of the phosphor coating of the wheel will always have a certain deviation, the laser efficiency of the phosphor is insufficient, the energy loss of the projection optical system will increase, and the brightness performance of the entire projection optical system will decrease

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