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Light path sealing device for digital projector and light path system thereof

A sealing device and optical path system technology, applied in projection devices, optics, instruments, etc., can solve the problems of hard connection sealing dust accumulation between the light source and the light pipe, affecting the optical transmission efficiency of the light source exit lens, reducing the projection brightness of film projections, etc., to achieve Avoid light reflection interference, improve self-locking reliability, and improve the effect of light transmittance

Pending Publication Date: 2019-11-01
CFG BARCO BEIJING ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, fine dust will enter the digital cinema projector and adhere to the light source exit lens and the outer surface of the light rod in the light pipe, which will affect the light transmittance of the light source exit lens and the transmission efficiency of the light path, thereby reducing the projected brightness of film projection, and over time. Over time, this effect will become more prominent; at the same time, the accumulation of dust will also cause excessive local heat of the light source and light pipe to cause damage to related components and shorten the service life of related components
In addition, because the light source needs to be replaced regularly, and the installation position of the light source and the light pipe often needs to be fine-tuned to ensure the alignment of the light path, therefore, the problem of dust accumulation cannot be solved by hard-connecting the light source and the light pipe

Method used

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  • Light path sealing device for digital projector and light path system thereof
  • Light path sealing device for digital projector and light path system thereof
  • Light path sealing device for digital projector and light path system thereof

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Embodiment Construction

[0024] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.

[0025] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0026] In the current prior art, the light source and the light pipe are connected at right angles, and there is an installation gap therein. In addition, in order to dissipate heat, the digital cinema projector itself is designed as an unsealed s...

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Abstract

The invention discloses a light path sealing device for a digital projector and a light path system thereof. The light path sealing device includes a fixing member penetrating through a through hole and further includes a first annular adjusting member, a second annular adjusting member, a first annular elastic member and a second annular elastic member, wherein one end of the first annular adjusting member is inserted into the through hole through one end of a fixing member, one end of the second annular adjusting member is sleeved at an outer side wall of the other end of the fixing member,the first annular elastic member is arranged at the other end of the first annular adjusting member and protrudes out of an end surface of the first annular adjusting member, the second annular elastic member is arranged at the other end of the second annular adjusting member and protrudes out of an end surface of the second annular adjusting member, and the first fixing member, the first annularadjusting member and an inner side wall of the second annular adjusting member are respectively covered by extinction coating. The sealing device is advantaged in that the sealing device can prevent dust from being deposited on a light source lens and a light rod in a light pipe and can further avoid reflection interference.

Description

technical field [0001] The invention relates to the technical field of optical path sealing of an optical path system, and more specifically, the present invention relates to an optical path sealing device for a digital projector and an optical path system thereof. Background technique [0002] Light sources and light pipes are important components of digital cinema projectors, which will directly affect the optical visual effects of digital cinema projectors. [0003] In the current prior art, the light source and the light pipe are connected at right angles, and there is an installation gap therein. In addition, in order to dissipate heat, the digital cinema projector itself is designed as an unsealed structure. Therefore, fine dust will enter the digital cinema projector and adhere to the light source exit lens and the outer surface of the light rod in the light pipe, which will affect the light transmittance of the light source exit lens and the transmission efficiency o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14
CPCG03B21/14
Inventor 郭克威刘德宽吕保军
Owner CFG BARCO BEIJING ELECTRONICS
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