Light and small wide-spectrum high-definition telephoto lens

A telephoto lens and wide-spectrum technology, which is applied in the field of light and small wide-spectrum high-definition telephoto lenses, can solve the problems of low resolution of telephoto lenses, difficulties in secondary spectral correction, and difficulty in optimizing volume and weight, and achieve improved Effects of resolution, corrected chromatic aberration, and good image quality

Pending Publication Date: 2022-04-19
FUJIAN FORECAM OPTICS CO LTD
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  • Claims
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Problems solved by technology

The widening of the spectral range greatly increases the chromatic aberration of the optical system, especially for the telephoto system, the chromatic aberration, espec

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  • Light and small wide-spectrum high-definition telephoto lens
  • Light and small wide-spectrum high-definition telephoto lens
  • Light and small wide-spectrum high-definition telephoto lens

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[0020] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as those of ordinary skill in the technical field to which the present application normally understands.

[0021] It should be noted that the terminology used herein is only to describe a particular embodiment, and is not intended to limit exemplary embodiments according to the present application. As used herein, unless the context is otherwise expressly indicated, the singular form is also intended to include a plural form, in addition, it should also be understood that when the terms "comprising" and / or "comprising" are used in the present specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] as Figure 1 Shown, a small and light wide-band high-defi...

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Abstract

The invention relates to a light and small wide-spectrum high-definition telephoto lens. An optical system of the lens comprises a first lens, a first gluing group, a fourth lens, a fifth lens and a second gluing group, wherein the first gluing group is formed by tightly connecting a second lens and a third lens; the second gluing group is formed by tightly connecting a sixth lens and a seventh lens; the first lens is a meniscus positive lens, the second lens is a meniscus negative lens, the third lens is a biconvex positive lens, the fourth lens is a biconcave negative lens, the fifth lens is a meniscus positive lens, the sixth lens is a biconcave negative lens, and the seventh lens is a biconvex positive lens. The positive focal power phi U1 of the first gluing group and the negative focal power phi U2 of the second gluing group meet the following relations: | phi U1/phi | is more than 0.5 and less than 1, | phi U2/phi | is more than 4 and less than 5, and phi is the focal power of the whole optical path. The lens is light and miniaturized; the lens has good imaging quality in a wide spectrum range of 450-1000 nm.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a light and small wide-spectrum high-definition telephoto lens. Background technique [0002] With the broadening of the spectral response curve of optical detection devices, optical lenses are gradually required in the direction of wide spectrum. The wider the wavelength band applicable to the lens, the more information can be obtained from the observed target, and the wide-spectrum lens is very important for the small size of multi-spectral technology. Minimization and weight reduction play an important role. The widening of the spectral range greatly increases the chromatic aberration of the optical system. Especially for the telephoto system, it is difficult to correct the chromatic aberration, especially the secondary spectrum, resulting in low resolution of the wide-spectrum telephoto lens and difficulty in optimizing the volume and weight. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/14G02B1/00
CPCG02B13/00G02B13/146G02B1/00
Inventor 王芬赵亮泉石姣姣孔祥东
Owner FUJIAN FORECAM OPTICS CO LTD
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