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Compact effective focal length 25mm, relative aperture f=0.95 digital camera m4/3 format lens

A digital camera, compact technology, applied in optical components, instruments, optics, etc., can solve the problem of low cost performance of the lens, achieve the effect of improving its quality and performance

Active Publication Date: 2019-07-09
沈阳中一光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a kind of compact effective focal length 25mm, relative aperture F=0.95 digital camera M4 / 3 frame lens, to solve the problems such as low cost performance of existing lens

Method used

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  • Compact effective focal length 25mm, relative aperture f=0.95 digital camera m4/3 format lens
  • Compact effective focal length 25mm, relative aperture f=0.95 digital camera m4/3 format lens
  • Compact effective focal length 25mm, relative aperture f=0.95 digital camera m4/3 format lens

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Embodiment Construction

[0018] The present invention will be further explained below in conjunction with specific embodiments, but the present invention is not limited thereto.

[0019] like figure 1 As shown, the compact M4 / 3 format lens of a digital camera with an effective focal length of 25mm and a relative aperture of F=0.95 includes the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, and the fifth lens in sequence from the object side 5. The sixth lens 6, the seventh lens 7, the eighth lens 8, the ninth lens 9, the tenth lens 10 and the eleventh lens 11, the first lens 1 is a spherical positive lens convex to the object side, including a convex first A spherical surface and a convex second spherical surface, the second lens 2 is a positive spherical surface convex to the object space, including a convex third spherical surface and a concave fourth spherical surface, and the third lens 3 is a negative spherical surface convex to the object space, including a convex fifth sp...

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Abstract

The invention discloses a compact 25mm F0.95 digital camera M4 / 3 picture lens. The picture 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, a tenth lens and an eleventh lens from an object side, wherein the first lens, the second lens, the sixth lens, the seventh lens, the ninth lens and the tenth lens are spherical surface positive lenses convex in the object side, the third lens is a spherical surface negative lens convex in the object side, the fourth lens and the eleventh lens are spherical surface negative lenses recessed in the object side, the fifth lens is a spherical surface positive lens parallel with the object side, the eighth lens is a spherical surface negative lens parallel with the object side, and a diaphragm is arranged between the third lens and the fourth lens. The compact 25mmF0.95 digital camera M4 / 3 picture lens is advantaged in that the picture lens is a standard lens, an aperture is super large, exquisite appearance is realized, and cost performance is quite high.

Description

technical field [0001] The invention relates to a digital mirrorless camera lens, in particular to a digital mirrorless camera lens with an effective focal length of 25 mm and a relative aperture of F=0.95 with a super large aperture M4 / 3 format. Background technique [0002] There are many domestic photographers, and there is a huge demand for lenses. However, there is a gap in the production and design of domestic lenses, and foreign matching lenses are high in price and low in cost performance, causing a heavy economic burden on the majority of ordinary photographers. [0003] Therefore, developing a lens with high imaging quality and high cost performance has become an urgent problem to be solved. Contents of the invention [0004] In view of this, the purpose of the present invention is to provide a compact effective focal length 25mm, relative aperture F=0.95 digital camera M4 / 3 format lens, to solve the problems of low cost performance of the existing lens. [0005...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B1/00
CPCG02B1/00G02B13/0015G02B13/006
Inventor 徐中一刘维镇孙德刚谷英红张晓峰左冠楠
Owner 沈阳中一光学科技有限公司
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