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Micro projector imaging lens

An imaging lens and projector technology, applied in the field of lenses, can solve the problems of low resolution of the imaging lens, the size of the field of view cannot meet the requirements, etc., and achieve the effects of uniform illumination, mass production, and large back focus.

Inactive Publication Date: 2019-06-11
SHENZHEN D LIGHT TECH CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the resolution of the imaging lens in the existing projectors, especially the miniature projector, is not high, and the need to increase the resolution of the imaging lens reduces the size of its aperture, and the size of the field of view does not meet the requirements, and with the 0.65 inch 1080p imaging chip, the existing imaging lens cannot adapt to its development

Method used

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  • Micro projector imaging lens
  • Micro projector imaging lens
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the drawings and embodiments:

[0018] Such as figure 1 As shown, the imaging lens of the micro projector includes an image side and an object side. A first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a diaphragm 5, The sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 10, the eleventh lens 11, the twelfth lens 12, the thirteenth prism 13, and the DMD 14.

[0019] The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 10, and the eleventh lens 11 The twelfth lens 12 and the thirteenth prism 13 are glass lenses, and the surface type is a spherical surface type.

[0020] The first lens 1 has a meniscus shape with its concave surface facing the diaphragm and has negative refractive power; the second lens 2 has a meniscus shape with its convex surface...

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Abstract

The invention discloses a minisize projector imaging lens, comprising an image party and an object party; a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens and a DMD are arranged between the image party and the object party. The minisize projector imaging lens is big in visual angle, uniform in illumination, small in overall length and big in back focal, which is applicable to the 0.65 DMD, the resolution rate achieves 200 million pixels, the relative aperture is big, and the relative illumination full field of the view is greater than 0.8. The cost is low, the tolerance is loose, and the batch production can be realized.

Description

Technical field [0001] The present invention is a lens, specifically, it relates to an imaging lens of a miniature projector. Background technique [0002] Since the development of mini projectors, high brightness and high resolution have become the main development trends. The imaging chip of the micro-projector has reached a large size of 0.65 inches 1080p. The lens of the projector is an important component in the projector. The lens determines the quality of the imaging performance. Therefore, the lens performance has become an important consideration in the design of the projector. However, the resolution of the imaging lens in the existing projectors, especially the micro-projector, is not high, and the need to increase the resolution of the imaging lens reduces the aperture size, and the field of view does not meet the requirements. In the application of the 1080p imaging chip, the existing imaging lens cannot adapt to its development. [0003] In terms of imaging lens, ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/16G03B21/14
CPCG02B13/0015G02B13/16G03B21/14
Inventor 吴庆利赵炯徐祖刚
Owner SHENZHEN D LIGHT TECH CORP LTD
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