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Effective focal length f=65mm, aperture number f=1.4 Large aperture medium format lens for digital mirrorless cameras

A technology of effective focal length and aperture number, applied in optics, optical components, instruments, etc., can solve the problems of heavy economic burden, large demand and high price, and achieve the effect of simplifying structure, improving cost performance and improving performance.

Active Publication Date: 2022-03-18
沈阳中一光学科技有限公司
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Problems solved by technology

However, there are many domestic photographers and there is a great demand
Among the existing lenses in the market, the price is extremely high, causing a heavy economic burden to the majority of ordinary photographers

Method used

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  • Effective focal length f=65mm, aperture number f=1.4 Large aperture medium format lens for digital mirrorless cameras
  • Effective focal length f=65mm, aperture number f=1.4 Large aperture medium format lens for digital mirrorless cameras
  • Effective focal length f=65mm, aperture number f=1.4 Large aperture medium format lens for digital mirrorless cameras

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] see Figure 1-2 , the present invention is a large-aperture medium-format lens for a digital mirrorless camera, which sequentially includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens from the object side 6. The seventh lens 7 , the eighth lens 8 , the ninth lens 9 , the tenth lens 10 , and the eleventh lens 11 .

[0037] The first lens 1 is a spherical positive lens convex to the object side, including a first spherical convex surface and a second spherical concave surface,

[0038] The second lens 2 is a spherical positive lens conve...

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Abstract

The present invention provides a large-aperture medium-frame lens for a digital mirrorless camera with an effective focal length of f=65mm and an aperture number of F=1.4, which comprises a first lens (1), a second lens (2), and a third lens ( 3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10 ), the eleventh lens (11); wherein, the eighth spherical surface is glued to the ninth spherical surface, the fourteenth spherical surface is glued to the fifteenth spherical surface, the eighteenth spherical surface is glued to the nineteenth spherical surface, and the twentieth spherical surface is glued to the second spherical surface Eleven spheres glued together. This 65mm F1.4 lens is a medium-format lens for digital mirrorless cameras, with a large aperture, exquisite appearance, and high cost performance.

Description

technical field [0001] The invention relates to a Fuji mirrorless medium format digital camera lens, in particular to a large aperture medium format lens for a digital mirrorless camera whose specification is an effective focal length of f=65mm and an aperture number of F=1.4. Background technique [0002] In digital camera equipment, there is a gap in the production design of domestic lenses. However, there are many domestic photography enthusiasts and the demand is great. Among the existing lenses in the market, the price is extremely high, which causes a heavy economic burden to ordinary photographers. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a large aperture medium format digital mirrorless camera with a specification of 65mm F1.4, which corrects various aberrations, simplifies the structure, improves the imaging quality, has high imaging quality, high cost performance, and exquisite appearance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B27/00G02B1/00
CPCG02B13/006G02B27/0025G02B1/00
Inventor 徐中一张晓峰孙德刚谷英鸿左冠楠董彬彬张鹤
Owner 沈阳中一光学科技有限公司
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