Projection lens

A projection lens and projection technology, applied in the field of projection lenses, can solve the problems that the projection lens cannot meet the requirements of miniaturization, large field of view, large aperture, etc.

Pending Publication Date: 2022-07-12
SINTAI OPTICAL SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a projection lens with a small volume, a large field of view, and a wide Smaller values, but still have good optical properties

Method used

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Experimental program
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Embodiment Construction

[0033] The invention provides a projection lens, comprising: a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; and a fifth lens with negative refractive power, the fifth lens includes a concave surface facing The image source side; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged along the optical axis from the projection side to the image source side; wherein the second lens and the third lens are There is no air space therebetween, and the combination of the second lens and the third lens has positive refractive power.

[0034] Please refer to Table 1, Table 2, Table 4, Table 5, Table 7, Table 8, Table 10, Table 11, Table 13 and Table 14 below, among which Table 1, Table 4, Table 7, Table 10 and Table 14 Thirteen are the relevant parameters of each lens according to the first embodiment to the fifth embodiment of...

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Abstract

A projection lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has refractive power. The second lens has negative refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has negative refractive power and includes a concave surface facing the image source side. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from the projection side to the image source side along the optical axis. Wherein the second lens and the third lens are glued, and the combination of the second lens and the third lens has positive refractive power.

Description

technical field [0001] The present invention relates to a projection lens. Background technique [0002] In addition to the development trend of today's projection lenses, in addition to the continuous development of miniaturization and large field of view, in order to improve the brightness of the projector, the projection lens needs to have a larger aperture. The known projection lenses can no longer meet the current needs. A projection lens with a new architecture can meet the needs of miniaturization, large field of view, and large aperture at the same time. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a projection lens with a small volume, a large field of view, The value is small, but still has good optical performance. [0004] The technical solution adopted by the present invention to solve the technical problem is to provide a projection lens including a first lens, a second lens, a third lens, a fou...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18G03B21/14
CPCG02B13/0045G02B13/006G02B13/06G02B13/18G03B21/142
Inventor王智鹏
OwnerSINTAI OPTICAL SHENZHEN CO LTD