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Large target surface automatic aperture high-pass light quantity zoom lens and using method thereof

A technology of automatic aperture and large target surface, applied in optics, optical components, installation, etc., to achieve the effect of large relative aperture, high-definition video camera, and high optical index

Active Publication Date: 2017-09-26
FUJIAN FORECAM OPTICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But such resolution and target size are far from meeting the requirements of current high-definition 4K cameras.

Method used

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  • Large target surface automatic aperture high-pass light quantity zoom lens and using method thereof
  • Large target surface automatic aperture high-pass light quantity zoom lens and using method thereof

Examples

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Effect test

Embodiment Construction

[0017] like Figure 1~2 As shown, a large target surface automatic aperture high-throughput zoom lens, the mechanical structure of the lens includes a main lens barrel 4, a front group mirror holder 5 for installing the front group A, and a rear group mirror for installing the rear group B seat 8, the front group mirror seat 5 is movably installed in the main lens barrel 4, the outer side of the main lens barrel 4 is provided with a front cam 7 that drives the front group mirror seat 5 to move back and forth, and the rear group mirror seat 8 is located The rear side of the front group mirror holder 5, the rear group mirror holder 8 is movably installed in the main lens barrel 4, and the outer side of the main lens barrel 4 is provided with a rear cam 15 that drives the rear group mirror holder 8 to move back and forth. An automatic aperture is arranged between the group lens base 5 and the rear group lens base 8, and the front guide nail 6 matched with the front group lens bas...

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Abstract

The invention relates to a zoom lens with large target surface, automatic aperture, high-pass light quantity and its use method. The mechanical structure of the lens includes a main lens barrel, a front group mirror seat for installing the front group A, and a rear group mirror for installing the rear group B. The front mirror mount is movably installed in the main lens barrel, and the outer side of the main mirror barrel is provided with a front cam that drives the front mirror mount to move back and forth. The rear mirror mount is located behind the front mirror mount, and the rear mirror mount is movable. In the main lens barrel, the outer side of the main lens barrel is set with a rear cam that drives the rear group lens base to move back and forth. An automatic aperture is set between the front group lens base and the rear group lens base. The front guide nail that matches the front cam base and the front cam, the rear guide nail that matches the rear group mirror base and the rear cam are arranged on the main lens barrel, the front locking nail for fixing the front cam is set on the main lens barrel, the main lens barrel The rear locking nail for fixing the rear cam is arranged on the top. The present invention has the characteristics of ultra-high definition, large target surface, and large relative aperture, and the imaging resolution is as high as 8 million pixels.

Description

technical field [0001] The invention relates to a zoom lens with large target surface automatic aperture and high-pass light quantity and a using method thereof. Background technique [0002] The rapid development of science and technology and the improvement of people's safety awareness have promoted the continuous progress of the security market. Nowadays, with the continuous maturity of advanced video compression coding technologies such as MPEG-4 and H.265, the rapid development of IP-based network transmission and the application of digital zoom technology, a series of high-definition cameras above 4K have been launched on the market. In the process of network transmission and digital zoom, the clarity (that is, resolution) of the video will decrease to a certain extent. But at the same time, people's requirements for image resolution are getting higher and higher, so they have higher requirements for the resolution of the front-end lens. [0003] With the continuous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/10G02B15/167
Inventor 郑勇强何武强魏雄斌苏青年
Owner FUJIAN FORECAM OPTICS CO LTD
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