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APS-C telephoto lens for digital mirrorless camera

An APS-C, single-camera technology, applied in the fields of lenses, optics, instruments, etc., can solve the problems of low cost performance, high price, and high cost, and achieve the effects of improving performance, high shutter speed, and simplifying the structure

Inactive Publication Date: 2014-12-31
徐中一
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among the lenses of digital cameras, there is a gap in the production and design of domestic lenses, almost all of which are produced abroad. These lenses are expensive, high in cost, and low in cost performance, which is a heavy burden for ordinary photographers

Method used

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  • APS-C telephoto lens for digital mirrorless camera
  • APS-C telephoto lens for digital mirrorless camera
  • APS-C telephoto lens for digital mirrorless camera

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Embodiment Construction

[0027] see Figure 1 to Figure 5 As shown, the present invention is a 35mmf0.95 digital micro-single camera APS-C frame lens, which sequentially includes a first lens (1), a second lens (2), and a third lens (3) from the object side , the fourth lens (4), 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 positive spherical lens convex to the object side, including a first spherical surface (convex surface) and a second spherical surface (convex surface), and the second lens (2) is a positive spherical surface 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 negative lens concave to the object side, including the fifth spherical surface (concave surface) and the sixth spherical surface (concave surface), and the fourth lens (4) is concave to the object Sq...

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Abstract

The invention discloses an APS-C telephoto lens for a digital mirrorless system camera. The APS-C telephoto lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens from the object space, wherein the first lens is a spherical positive lens projected towards the object space, the second lens is a spherical positive lens projected towards the object space, the third lens is a spherical negative lens recessed towards the object space, the fourth lens is a spherical negative lens recessed towards the object space, the fifth lens is a spherical negative lens recessed towards the object space, the sixth lens is a spherical positive lens projected towards the object space, the seventh lens is a spherical positive lens projected towards the object space, the eighth lens is a spherical negative lens recessed towards the object space, the ninth lens is a spherical positive lens projected towards the object space, and the tenth lens is a spherical negative lens recessed towards the object space. The APS-C telephoto lens has the advantages that the large aperture design is adopted, the shutter speed is accelerated, and in addition, the cost performance is high.

Description

technical field [0001] The invention relates to a digital camera lens, in particular to a 35mm f0.95 APS-C frame lens for a digital micro-single camera with high imaging quality, high cost performance, light weight and high shutter speed. Background technique [0002] With the continuous development of science and technology, digital cameras are constantly developing towards the direction of light, thin, small and multi-functional. cost, and can effectively improve the applicability of the digital camera. However, in the lens of digital cameras, there is a gap in the production and design of domestic lenses, almost all of which are produced abroad. These lenses are expensive, costly, and cost-effective, which is a heavy burden for 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 with high imaging quality, high cost performance, independent in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B1/00G02B3/00
Inventor 徐中一刘维振孙德刚谷英红张晓峰
Owner 徐中一
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