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Digital camera silent frame lens with ultra-wide field and large aperture

A digital camera and ultra-wide-angle technology, applied in optics, optical components, instruments, etc., can solve the problems of high price, low cost performance, and large demand for matching lenses

Pending Publication Date: 2019-07-23
深圳市雷影光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In digital camera equipment, there is a gap in the production and design of domestic lenses, but there are many domestic photographers, the demand is large, and the price of matching lenses 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 silent frame lens with ultra-wide field and large aperture
  • Digital camera silent frame lens with ultra-wide field and large aperture
  • Digital camera silent frame lens with ultra-wide field and large aperture

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Embodiment Construction

[0070] Please refer to Figure 1 to Figure 4 As shown, it shows the specific structure of the preferred embodiment of the present invention, a digital camera ultra-wide-angle large aperture full-frame lens, along the optical axis from the object side to the image side sequentially includes a first lens with negative refractive power Group G1, a second lens group G2 with positive refractive power, a third lens group G3 with positive refractive power, and an imaging surface IMA. An aperture STP is arranged between the second lens group G2 and the third lens group G3. When the object moves from infinity to close distance, the first lens group G1 and the second lens group G2 are fixed, and the third lens group G3 moves to achieve focus, and the following conditional formula is satisfied:

[0071] 10.6≤(|FL12|+S) / BFL≤12.5 (1);

[0072] 9.9≤(|FL12|+S) / (tanω*BFL)≤11.6 (2);

[0073] Wherein, FL12: when infinity, the focal length after synthesis of the first lens group G1 and the sec...

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Abstract

The invention discloses a digital camera silent frame lens with the ultra-wide field and large aperture. The digital camera silent frame lens successively includes a first lens group G1 with the negative power, a second lens group G2 with the positive power, a third lens group G3 with the positive power and an imaging surface IMA from the object space to the image space along an optical axis, andan aperture STP is arranged between the second lens group G2 and the third lens group G3; when an object moves from the infinity to the close range, the first lens group G1 and the second lens group G2 are fixed, the third lens group G3 moves, focusing is realized, and following conditional expressions are met, wherein the conditional expressions are 10.6<=(|FL12|+S) / BFL<=12.5(1) and 9.9<=(|FL12|+S) / (tan omega*BFL)<=11.6(2); and the lens is made from a plurality of spherical lenses and an aspheric lens, relative parameters of lenses are designed reasonably, thus the aberration is corrected, and the lens quality and the lens cost performance are improved.

Description

technical field [0001] The invention belongs to the technical field of digital camera lenses, in particular to a digital camera super wide-angle large aperture full-frame lens. Background technique [0002] In digital camera equipment, there is a gap in the production and design of domestic lenses, but there are many domestic photographers, the demand is large, and the price of matching lenses is high, and the cost performance is low, which is a heavy burden on the economy of ordinary photographers. [0003] Therefore, it is urgent to work out a new technical solution to solve the above problems. Contents of the invention [0004] The present invention aims at the deficiencies in the prior art, and its main purpose is to provide a full-frame lens with ultra-wide angle and large aperture for digital cameras to solve the technical problems mentioned above. [0005] To achieve the above object, the present invention adopts the following technical solutions: [0006] An ultr...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 刘瑞军陈宝锋
Owner 深圳市雷影光电科技有限公司
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