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General pearl eye projection lens with variable parameters of digital projector

A technology of projection lens and projector, which is applied in the direction of optical components, optics, instruments, etc., can solve problems such as inability to be used in common models, and achieve the effects of enhancing versatility, reducing production costs, and reducing design workload

Inactive Publication Date: 2012-04-11
秦皇岛视听机械研究所有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, under normal circumstances, a fisheye projection lens designed for a specific model, such as a single DLP or LCD or D-ILA, cannot be used in common with models based on the same core technology with different numbers of target surfaces, let alone with models based on different core technologies. General purpose

Method used

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  • General pearl eye projection lens with variable parameters of digital projector
  • General pearl eye projection lens with variable parameters of digital projector

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the embodiments of the accompanying drawings. The accompanying drawings are for reference and illustration only, and are not intended to limit the scope of the present invention.

[0018] Depend on figure 1 As shown, the variable parameter general-purpose fisheye projection lens for digital projectors has a first sub-structure body A composed of lenses 1 to 4, 6, 7 and diaphragm surface 8 arranged sequentially in the lens housing 5. To form a large viewing angle. There are 4 lens groups and 6 lenses in the first sub-structure body A; wherein lenses 3, 4 and lenses 6, 7 are two doublet lens groups, and the setting of each lens is fixed; the first sub-structure body A The upper movable connection second sub-structure B is used for intermediate adjustment of image height. The second substructure B is composed of lenses 10-15, diaphragm surface 16, and lenses 17, 18 arranged sequentially in the len...

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Abstract

The invention discloses a projection lens of varying parameter currency projection pearl eye in digital projector. It can satisfy for using in the same distance projector of the digital projector with single target area and three target areas based on the DLP, LCD and D-ILA technology by combining the multiple branch structure, the replaceable middle adjusting branch structure and back group compensating branch structure, so it can compensate every image errors formed by the TIR optical thickness difference from the different kind and type of digital projector and can get the pearl eye projection lens of every digital projector with 0.7 inches to 1.2 inches target area. Comparing to the present focal variation pearl eye lens, it has bigger relative aperture. So it can design the compound currency pearl eye projection lens based on the digital projector. The mode can intensify the currency of the pearl eye lens part and benefit for production, decreasing the cost and workload.

Description

technical field [0001] The patent of the present invention relates to a general-purpose projection fisheye lens for digital projectors to project spherical screen images, which can effectively change the aperture, change the working distance, compensate for aberrations caused by structural differences in the optical system of the projector itself, change the focal length and adapt to different targets. The surface size (image height) does not change the quality of the projected picture, and it has good versatility for digital projectors with various specifications and models. Background technique [0002] Fisheye lens is a very special kind of all optical lens categories, generally used for shooting and projection in 120° to 180° field of view environment (equidistance ball screen). In different application fields, the structural parameters and application environment parameters of fisheye lenses are different, which results in different shapes, spacing sizes and materials o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00
Inventor 陈琛
Owner 秦皇岛视听机械研究所有限公司
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