Zoom lens and camera device based on zoom lens

A zoom and lens technology, applied in optical components, optics, instruments, etc., can solve problems such as enlargement and achieve stable performance

Active Publication Date: 2017-08-15
JIAXING ZHONGRUN OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if we want to increase the field of view with...

Method used

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  • Zoom lens and camera device based on zoom lens
  • Zoom lens and camera device based on zoom lens
  • Zoom lens and camera device based on zoom lens

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Embodiment Construction

[0036] Such as figure 1 As shown, this embodiment relates to a zoom lens, including: a first lens group 1 with a positive refractive power, a second lens group 2 with a negative refractive power, a diaphragm 6, The third lens group 3, the fourth lens group 4 and the fifth lens group 5 with positive refractive power, wherein: the first lens group 1, the third lens group 3 and the fifth lens group 5 are always in a fixed state, the second lens group The lens group 2 moves from the object plane side to the image plane side along the optical axis to change the magnification of the viewing angle from the wide-angle end to the telephoto end, and at the same time, the fourth lens group 4 moves from the image plane side to the object plane side along the optical axis to complete The correction and focusing of the image plane ensure the stability of the image plane in this embodiment during the change of the focal length.

[0037] The first lens group 1 includes: a first lens G1 with ...

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PUM

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Abstract

The invention relates to a zoom lens and a camera device based on the zoom lens. The zoom lens comprises a first lens groove of positive focal power, a second lens group of negative focal power, a diaphragm, a third lens groove of positive focal power, a fourth lens groove and a fifth lens groove arranged along the light incident direction successively; the first, third and fifth lens groups are fixed, the second lens group moves from the object side to the image side along the optical axis to zoom the angle of visual field from the wide angle end to the telescoping end, and the fourth lens group moves from the image side to the object side along the optical axis to realize correction and focusing of the image side. The camera device comprises an optical filter, protective glass and a solid camera component, a light reception side of the solid camera component is arranged in the imaging surface of the zoom lens, and the optical filter and the protective glass are arranged between the fifth lens group and the image side. The zoom lens employs a positive, negative, positive, positive and positive structure and aspheric lenses, a '4k' performance is realized in a 1/2.5 small image diameter, and the horizontal angle of visual field can reach an ultra-wide angle of 75 degree.

Description

technical field [0001] The invention relates to a technology in the field of optical imaging, in particular to a zoom lens and an imaging device thereof. Background technique [0002] Ultra-high-definition refers to the official name of "4K resolution (3840×2160 pixels)" approved by the International Telecommunication Union, and is designated as "Ultra High-Definition (Ultra HD)". Generally, 720P is used as the high-definition standard in the market. The current technical high-definition TV resolution is 1280×720 pixels, and the resolution of 1920×1080 pixels is called full high-definition (Full HD). 4K UHD has a physical resolution of 3840×2160, twice the width and height of 1080P full HD, and four times the area, and the total number of pixels of the display device has reached more than 8 million. Although 1080P is still the mainstream lens on the market, with the development of society and economy, the improvement of people's living standards, and the constant pursuit of...

Claims

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Application Information

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IPC IPC(8): G02B15/173
CPCG02B15/173
Inventor 葛航笠万彦男尚洁阳盛亚茗张平华
Owner JIAXING ZHONGRUN OPTICAL TECH
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