Projection lens protective structure and projector
A projection lens and protective structure technology, applied in the direction of instruments, optics, projection devices, etc., can solve the problems of condensation of small water droplets, large temperature difference of the lens, and affect the projection effect, so as to achieve anti-condensation and reduce the effect of internal and external temperature differences
Active Publication Date: 2021-03-19
SHENZHEN HUOLE TECH DEV CO LTD
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- Description
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Problems solved by technology
The current projection lens needs to be packaged in a closed space to isolate dust. Usually, after the projection lens works for a long time, the temperature near the projection lens rises sharply, resulting in a large temperature difference between the inside and outside of the lens, and water vapor is easy to condense small water droplets on the inner surface of the lens, affecting shadow effect
Method used
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Embodiment Construction
[0021] see figure 1 with figure 2 , the embodiment of the present application provides a projection lens protection structure 100 , and the projection lens protection structure 100 includes a housing assembly 10 , a sealing sleeve 20 and a projection lens 30 . The housing assembly 10 includes a carrier body 11 and a cover assembly 12 . The sealing sleeve 20 is fixedly connected to the bearing body 11, the sealing sleeve 20 is provided with a first open end 21 and a second open end 22 opposite to the first open end 21, and the first open end 21 extends to the receiving space 23 of the second open end 22 and the airflow channel 24 . The projection lens 30 protrudes into the receiving space 23 through the first opening end 21, and closely fits with the sealing sleeve 20. The cover assembly 12 is fixedly connected to the carrier body 11 and covers the first Two open ends 22 , the cover assembly 12 can pass through the projection light of the projection lens 30 . The air flow ...
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The embodiment of the invention provides a projection lens protective structure and a projector. The projection lens protective structure comprises a casing body component, a sealing sleeve, and a projection lens. The casing body component includes a bearing body and a cover component. The sealing sleeve is fixedly connected with the bearing body. The sealing sleeve is provided with a first open end, a second open end opposite to the first open end, an accommodating space extending from the first open end to the second open end, and an air flow channel. The projection lens extends into the accommodating space through the first open end to closely match the sealing sleeve. The cover component is fixedly connected with the bearing body and covers the second open end. The cover component cantransmit the projection light of the projection lens. The air flow channel spirally extends from the first open end to the second open end. The air flow channel is communicated with the accommodatingspace. When the working temperature of the projection lens rises, the gas in the accommodating space can exchange heat with the outside through the air flow channel, reducing the temperature difference between the inside and outside of the sealing sleeve, and achieving an anti-condensation effect.
Description
technical field [0001] The present application relates to the technical field of projection equipment, in particular to a projection lens protection structure and a projector. Background technique [0002] The projector projects light onto the screen through a projection lens, and the brighter the light, the better the visual effect. The current projection lens needs to be packaged in a closed space to isolate dust. Usually, after the projection lens works for a long time, the temperature near the projection lens rises sharply, resulting in a large temperature difference between the inside and outside of the lens, and water vapor is easy to condense small water droplets on the inner surface of the lens, affecting Shadow effect. Contents of the invention [0003] An embodiment of the present application provides a protection structure for a projection lens. The protection structure for a projection lens includes a housing assembly, a sealing sleeve, and a projection lens. ...
Claims
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IPC IPC(8): G03B21/14G03B21/16
CPCG03B21/145G03B21/16
Inventor 胡智勇胡震宇许长征
Owner SHENZHEN HUOLE TECH DEV CO LTD