Projector with cleanable protective cover for camera lens

Abstract

This invention provides one projection machine with clear lens head protection cover, which comprises shell, light engine inside shell, circuit board, light source, and relative dissipation structure, wherein, the light engine projection lens stretches out of shell; the projection lens head is covered with flexible loading protection cover. This invention adopts clear lens protection cover kept on the lens head in work.

Description

technical field [0001] The invention relates to a projector, in particular to a projector with a washable lens protection cover. Background technique [0002] Projectors are widely used in education, business and home. A common projector generally includes a housing, a light engine, a circuit board, a light source and a corresponding heat dissipation mechanism arranged in the housing. According to the number of lenses used in the light engine, projectors can be divided into single-lens projectors and three-lens projectors. In terms of design, the white light generated by the light source is generally separated into red, green and blue three-color light, and the three-color light is modulated by three liquid crystal light valves respectively. The modulated three-color light is different according to the design of single lens or three lenses. processed in different ways. In a single-lens projector, the three-color light is synthesized with a color combining element and proj...

AI Technical Summary

Problems solved by technology

In actual work, absolute ethanol is generally used to clean the glass surface of the lens. However, although absolute ethanol volatilizes quickly, it absorbs water quickly. Therefore, after the lens is cleaned with absolute ethanol, it often forms a stain on the lens surface. A layer of water stains will affect the light transmittance, and the degree of influence can reach 10%

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