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High resolution wide angle projection lens and projector

A high-resolution, projection lens technology, applied in the optical field, can solve the problems of contrast and sharpness difference, large chromatic aberration, visual distortion, etc., to achieve the effect of correcting chromatic aberration, good correction, and improving contrast and uniformity

Active Publication Date: 2013-12-25
SHENZHEN ESTAR DISPLAYTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are individual models of projection lenses with a projection ratio less than 1, they cannot meet the needs of the market well due to poor contrast and clarity, large chromatic aberration or visual (TV) distortion.

Method used

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  • High resolution wide angle projection lens and projector
  • High resolution wide angle projection lens and projector
  • High resolution wide angle projection lens and projector

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] refer to figure 1 An embodiment of the high-resolution projector of the present invention includes: a first lens group 11 , a second lens group 12 , a diaphragm 13 and a third lens group 14 arranged in sequence along a first direction. The first lens group 11 , the second lens group 12 , and the third lens group 14 are arranged at intervals, and the aperture 13 is located between the second lens group 12 and the third lens group 14 .

[0018] In an actual process, the focus adjustment can be realized by moving the first lens group 11 forward and backward along the first direction, and the focus adjustment can also be realized by moving the second lens group 12 forward and backward along the first direction.

[0019] Wherein, setting the diaphragm 13 can realize the telecentric optical path design of the image space, and can also improve the co...

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PUM

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Abstract

The invention discloses a high resolution wide angle projection lens and a projector. The focal length projection proportion of the projection lens is less than 0.6. The high resolution wide angle projection lens comprises a first lens assembly, a second lens assembly, a diaphragm and a third lens assembly which are sequentially arranged along a first direction; furthermore, the invention relates to the high resolution wide angle projector, the projector comprises a chip to be projected and a high resolution wide angle projection lens; by taking the first direction as the reference, the chip to be projected is arranged in front of the third lens assembly. Due to the structure, color difference of the projection lens and the projector is rectified, and the contrast ratio and homogeneity are improved.

Description

technical field [0001] The present invention is a divisional application of a patent application titled "A High-resolution Wide-angle Projection Lens and Projector" filed by the applicant on November 15, 2011, with application number 2011103616755. The present invention relates to the field of optical technology, in particular It involves a high-resolution wide-angle projection lens and a projector. Background technique [0002] At present, the commonly used projection lens has a larger focal length and a smaller field of view, generally less than 60 degrees, so the throw ratio (Throw Ratio) is relatively large, and the throw ratio is generally greater than 2. In the actual application of the projection lens, when the projection distance is 1 meter, the projected image is less than 50 inches, which cannot well meet the requirement of projecting a larger image in a smaller space. [0003] Although there are individual models of projection lenses with a projection ratio less ...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/18G02B13/22G03B21/14
Inventor 刘美鸿
Owner SHENZHEN ESTAR DISPLAYTECH
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