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Small-distortion, small-volume, high-illumination and high-resolution optical system

A high-resolution, optical system technology, applied in the field of optical systems, can solve the problems of large volume, large distortion, low illumination, etc., and achieve the effect of low edge resolution, high edge resolution, and small lens volume

Active Publication Date: 2012-12-05
UNION OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention overcomes the shortcomings of the prior art such as large distortion, large volume, and low illumination, and provides an optical system with small distortion, small volume, high illumination, and high resolution

Method used

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  • Small-distortion, small-volume, high-illumination and high-resolution optical system

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0010] An optical system with small distortion, small size, high illuminance and high resolution, which is set in order from the subject to the image plane: first lens 1, second lens 2, third lens 3, aperture 6, fourth lens Lens 4, optical filter 7 and image plane are photosensitive chip 5; Described first lens 1 and the 3rd lens 3 are spherical lenses, and described second lens 2 and the 4th lens 4 are aspherical lenses; The first The material of the lens 1 and the third lens 3 is glass, and the material of the second lens 2 and the fourth lens 4 is plastic; the focal length of the first lens 1, the third lens 3 and the fourth lens 4 is positive, and the second lens The focal length of 2 is negative, and the surface of the second lens close to the image plane, that is, the second surface 8 is concave inward of the lens, as shown in the figure. ...

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Abstract

The invention relates to a small-distortion, small-volume, high-illumination and high-resolution optical system, which solves the problems of large distortion, large volume, small illumination, low resolution and the like, and comprises a first lend, a second lens, a third lens and a fourth lens, wherein the first lens, the second lens, the third lens and the fourth lens are arranged sequentially; an aperture is arranged between the third lens and the fourth lens; the first and third lenses are spherical lenses; the second and fourth lenses are non-spherical lenses; the first and third lensesare made of glass; and the second and the fourth lenses are made of plastic. The optical system is mainly used in the fields such as monitoring, photographic and vehicle-mounted systems.

Description

【Technical field】 [0001] The invention relates to an optical system, in particular to an optical system with small distortion, small volume, high illuminance and high resolution applied to monitoring, photography and vehicle-mounted systems. 【Background technique】 [0002] At present, the large or medium field of view lenses for photography, security, and vehicles generally have such shortcomings: large lens distortion; large external dimensions; low relative illumination at the edge; low resolution. At present, there are only a few lenses that improve certain aspects at the expense of other aspects. For example, in order to achieve high edge illumination, the distortion and volume must be made large. There is no lens that overcomes all of the above shortcomings. Therefore, the medium or large field of view lenses for photography, security, and vehicles that are popular in the market now have high cost, large volume, large distortion, and low relative illumination at the ed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B9/34
Inventor 李建华肖明志
Owner UNION OPTECH
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