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digital camera full frame lens

A lens, digital technology, applied in the field of large aperture full-frame lens of digital single-lens reflex camera, can solve the problems of low cost performance and high price, and achieve the effect of improving performance, simplifying structure, and improving image quality

Active Publication Date: 2017-02-08
SHENYANG ZHONGYI OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing lens designs, such as the 85mm f1.2 produced by Nikon, Canon Pentax and other manufacturers, the price is high and the cost performance is low, which is a heavy burden on the economy of ordinary photographers

Method used

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  • digital camera full frame lens
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Embodiment Construction

[0015] see Figure 1 to Figure 5 Shown, the present invention is a kind of 85mmf1.2 digital single-lens reflex camera ultra-large aperture full-frame lens, and it comprises first lens (1), second lens (2), the 3rd lens (3), the 4th lens ( 4), the fifth lens (5), the sixth lens (6), the seventh lens (7), and the eighth lens (8). The first lens (1) is a spherical positive lens convex to the object side, including a first spherical surface (convex) and a second spherical surface (concave), and the second lens (2) is a positive spherical lens convex to the object side, including a third (convex) spherical positive lens. ) spherical surface and the fourth spherical surface (concave surface), the third lens (3) is a spherical positive lens convex to the object side, including the fifth spherical surface (convex surface) and the sixth spherical surface (plane), and the fourth lens (4) is parallel to the object The square spherical positive lens includes the seventh spherical surface...

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Abstract

The invention discloses an extra-large aperture full-width lens of a digital single-lens reflex camera. The specification of the extra-large aperture full-width lens of the digital single-lens reflex camera is 85 mmf1.2. The lens sequentially comprises a first lens body, a second lens body, a third lens body, a fourth lens body, a fifth lens body, a sixth lens body, a seventh lens body and an eighth lens body from the object space. The first lens body, the second lens body, the third lens body, the sixth lens body and the eighth lens body are respectively a spherical surface plus lens body protruding towards the object space, the fourth lens body is a spherical surface plus lens parallel to the object space, and the fifth lens body and the seventh lens body are respectively a spherical minus lens concaving towards the object space. The full-width lens of the digital single-lens reflex camera is of a medium focus length, and is extra large in aperture, delicate in appearance and extremely high in cost performance.

Description

technical field [0001] The invention relates to a digital single-lens reflex camera lens, in particular to a digital single-lens reflex camera super large aperture full-frame lens with a specification of 85mm f1.2. Background technique [0002] In digital camera equipment, there is a gap in the production design of domestic lenses. However, there are many fans in China and the demand is great. Among the existing lens designs, the 85mm f1.2 produced by manufacturers such as Nikon and Canon Pentax has high price and low cost performance, which is a heavy burden on the economy of ordinary photographers. Contents of the invention [0003] In view of the shortcomings existing in the above-mentioned prior art, the purpose of the present invention is to provide a digital SLR camera with a specification of 85mmf1. Full frame lens. [0004] The technical solution for realizing the present invention is: a digital single-lens reflex camera ultra-large aperture full-frame lens, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B1/00
Inventor 徐中一刘维振孙德刚谷英红张晓峰
Owner SHENYANG ZHONGYI OPTICAL TECH CO LTD
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