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imaging lens

An imaging lens and lens technology, applied in the field of imaging lenses, can solve problems such as large volume, and achieve the effects of high resolution, short overall length, and large aperture

Active Publication Date: 2018-06-19
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 an imaging lens with short total length, large aperture and high resolution, but still has good optical performance

Method used

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Embodiment Construction

[0034] see figure 1 , figure 1 is a schematic diagram of the lens configuration of the first embodiment of the imaging lens according to the present invention. During imaging, the light from the object side is finally imaged on the imaging surface IMA1. The imaging lens 1 sequentially includes a first lens group G11 , an aperture ST1 and a second lens group G12 from the object side to the image side along the optical axis OA1 . The first lens group G11 sequentially includes a first lens L11 and a second lens L12 along the optical axis OA1 from the object side to the image side. The first lens L11 is a meniscus lens with negative refractive power. The object side S11 is convex, the image side S12 is concave, the object side S11 is spherical, and the image side S12 is aspherical. The second lens L12 is a meniscus lens with positive refractive power. The object side S13 is convex, the image side S14 is concave, and both the object side S13 and the image side S14 are spherical ...

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Abstract

An imaging lens includes a first lens group, an aperture and a second lens group in sequence from the object side to the image side along the optical axis. The first lens group includes a first lens and a second lens in sequence from the object side to the image side along the optical axis, the first lens has negative refractive power, and the second lens has positive refractive power. The second lens group includes a third lens, a fourth lens, a fifth lens, and a sixth lens in sequence along the optical axis from the object side to the image side, the third lens has a negative refractive power and includes a concave surface, the concave surface faces the object side, and the second lens has a negative refractive power. The four lenses have positive refractive power, the fifth lens has negative refractive power, and the sixth lens has positive refractive power. The imaging lens satisfies the following conditions: 0.23≤f / TL≤0.45, where f is the effective focal length of the imaging lens, and TL is the distance on the optical axis from the object side of the first lens to the imaging plane.

Description

technical field [0001] The invention relates to an imaging lens. Background technique [0002] The development trend of today's consumer digital cameras is towards miniaturization, which makes the interchangeable-lens digital SLR cameras also need to be miniaturized. The imaging lens of the known digital single-eye camera has a large volume, which can no longer meet the current needs. Another imaging lens with a new structure is needed to meet the needs of miniaturization, large aperture, and high resolution at the same time. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide an imaging lens with short total length, large aperture and high resolution, but still has good optical performance. [0004] The technical solution adopted by the present invention to solve the technical problem is to provide an imaging lens, which sequentially includes a first lens group, an aperture and a second lens group along the optical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/00
Inventor 许荣顺
Owner SINTAI OPTICAL SHENZHEN CO LTD
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