Ultra-large-aperture full-width lens for digital single-lens reflex camera

A single-lens reflex camera, ultra-large technology, applied in optics, optical components, instruments, etc., can solve the problems of low cost performance and high price, and achieve the effects of improving performance, simplifying structure, and improving imaging quality

Inactive Publication Date: 2014-07-09
徐中一
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among the existing lens designs, such as the 50mm f0.95 produced by Nikon, Canon Pentax and other manufacturers...

Method used

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  • Ultra-large-aperture full-width lens for digital single-lens reflex camera
  • Ultra-large-aperture full-width lens for digital single-lens reflex camera
  • Ultra-large-aperture full-width lens for digital single-lens reflex camera

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Embodiment Construction

[0015] see Figure 1 to Figure 5 As shown, the present invention is a super-large aperture full-frame lens for a digital SLR camera, which sequentially includes a first lens (1), a second lens (2), a third lens (3), and a fourth lens (4) from the object side. The fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), and the tenth lens (10). The first lens (1) is a spherical positive lens convex to the object side, including a first spherical surface (convex surface) and a second spherical surface (plane), and the second lens (2) is a spherical positive lens convex to the object side, including a third (convex surface) ) 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 (concave surface), and the fourth lens (4) is concave The positive spherical lens on ...

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Abstract

The invention discloses an ultra-large-aperture full-width lens for a digital single-lens reflex camera. The ultra-large-aperture full-width 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, an eighth lens body, a ninth lens body and a tenth lens body from the object space. The first lens body is a spherical surface positive lens protruding towards the object space. The second lens body is a spherical surface positive lens protruding towards the object space. The third lens body is a spherical surface positive lens protruding towards the object space. The fourth lens body is a spherical surface positive lens caving towards the object space. The fifth lens body is a spherical surface negative lens protruding towards the object space. The sixth lens body is a spherical surface positive lens protruding towards the object space. The seventh lens body is a spherical surface negative lens protruding towards the object space. The eighth lens body is a spherical surface positive lens parallel to the object space. The ninth lens body is a spherical surface positive lens protruding towards the object space. The tenth lens body is a spherical surface positive lens caving towards the object space. The full-width lens for the digital single-lens reflex camera has the ultra-large aperture and is exquisite 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 50mm f0.95. 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, such as the 50mm f0.95 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. Contents of the invention [0003] In view of the above-mentioned shortcomings in the prior art, the purpose of the present invention is to provide a camera that corrects various aberrations, simplifies the structure, improves the imaging quality, has high imaging quality, high cost performance, a full-frame lens with a large aperture, and has independent ...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B1/00
Inventor 徐中一刘维振孙德刚谷英红张晓峰
Owner 徐中一
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