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Wide-angle lens

A wide-angle lens and lens technology, applied in the field of wide-angle lenses, can solve the problems that automotive lenses cannot take into account miniaturization, wide-angle resistance to environmental temperature and light intensity changes, etc. Effect

Inactive Publication Date: 2016-07-27
SINTAI OPTICAL SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a wide-angle lens with a short total length and a relatively small viewing angle for the vehicle lenses in the prior art, which cannot take into account the defects of miniaturization, wide viewing angle, and resistance to changes in ambient temperature and light intensity. It can reach more than 150 degrees, resist environmental temperature changes, and resist environmental light intensity changes, but still have good optical properties

Method used

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Embodiment Construction

[0040] see figure 1 , figure 1 is a schematic diagram of the lens configuration of the first embodiment of the wide-angle lens according to the present invention. During imaging, the light from the object side is finally imaged on the imaging surface IMA1. The wide-angle lens 1 sequentially includes a first lens L11, a second lens L12, a third lens L13, a first aperture ST11, a second aperture ST12, a fourth lens L14, and a fifth lens L15 from the object side to the image side along the optical axis OA1. , the sixth lens L16 and the optical filter OF1. The first lens L11 is a crescent lens with negative refractive power. The object side S11 is convex and the image side S12 is concave. Both the object side S11 and the image side S12 are spherical surfaces. The second lens L12 is a crescent lens with negative refractive power. The object side S13 is convex and the image side S14 is concave. Both the object side S13 and the image side S14 are spherical surfaces. The third len...

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Abstract

The invention provides a wide-angle lens which sequentially comprises a first lens, a second lens, a third lens, a first aperture, a fourth lens, a fifth lens and a sixth lens along an optical axis from an object side to an image side. The first lens has negative refractive power. The second lens has negative refractive power. The third lens has positive refractive power. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The sixth lens has positive refractive power.

Description

technical field [0001] The invention relates to a wide-angle lens. Background technique [0002] The current development trend of automotive lenses is towards miniaturization and wide viewing angle. In addition, due to the large changes in the temperature and light intensity of the external environment when the car is in use, in addition to the miniaturization and wide viewing angle, the automotive lens also needs to be resistant to changes in environmental temperature and light intensity. The known wide-angle lens can no longer meet the needs of today, and another wide-angle lens with a new structure is needed to meet the needs of miniaturization, wide viewing angle, resistance to environmental temperature changes, and environmental light intensity changes. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a wide-angle lens with a short total length and a relatively small viewing angle for the vehicle lenses in t...

Claims

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Application Information

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IPC IPC(8): G02B13/06G02B13/00G02B13/18
Inventor 张裕民
Owner SINTAI OPTICAL SHENZHEN CO LTD