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Varifocus camera lens

A zoom lens and zoom lens technology, applied in the field of zoom lenses, can solve the problems of difficulty, stability, imaging quality and service life that need to be further tested, and achieve the effect of fewer lenses, excellent optical performance, and clear imaging

Inactive Publication Date: 2008-08-13
SINTAI OPTICAL SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability, imaging quality, and service life of this product in the process of use still need to be further tested, and it is still quite difficult to mass-produce and use it in the short term.

Method used

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  • Varifocus camera lens
  • Varifocus camera lens
  • Varifocus camera lens

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0039] See figure 1 A schematic diagram of the optical system of the zoom lens of the present invention is shown. The zoom lens includes a first lens group 1 with negative refractive power, a second lens group 2 with positive refractive power, and a third lens group 3 with positive refractive power in sequence from the object side to the image side. Wherein, the first lens group 1 includes a light-receiving lens 10 with a negative refractive power. The light-receiving lens 10 can be molded by an optical plastic mold and is fixed at the foremost end of the lens for receiving light. The light-collecting lens 10 is an aspherical lens, that is, at least one surface thereof is an aspherical surface. In specific implementation, the first surface 11 facing the object side may be a slightly convex aspheric surface, and the opposite second surface 12 may be a concave aspheric surface toward the object side. The invented zoom lens has an angle of view up to 65.3 degrees in a wide-angle sta...

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PUM

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Abstract

The present invention discloses a miniaturized variable-focus lens, specially it is applicable to the field of handset with shooting function or miniature digital camera. From object space to image space it successively includes first lens group of negative diopter, second lens group of negative diopter and third lens group of positive diopter, in which the first lens group position is fixed, the distance between second lens group and first lens group is changed so as to make the focal distance of whole lens be changed, and the change of third lens group position can be used for compensating the imaging face movement resulted after the focus is changed, so that the position of imaging face can be fixed always, and is not changed.

Description

【Technical Field】 [0001] The present invention relates to a zoom lens, in particular to a lightweight miniature zoom lens with ultra-short size and ultra-short size capable of long-range shooting and wide-angle shooting functions. 【Background technique】 [0002] Different from the focus and zoom lenses of traditional cameras, camcorders and general digital cameras, the size of the camera lens used in camera phones is much smaller and the structure is much simpler, and most of them are fixed. Focusing lenses have certain limitations on the shooting range, especially for long and short distance shooting, and cannot achieve the best shooting effect through focusing and zooming like traditional cameras. For example, Chinese Utility Model Patent Nos. 01272836.5, 01273098.X, 02218484.8, 03220711.5 and US Patent Nos. 6,650,486, 6,741,405 all disclose a fixed-focus lens structure suitable for camera phones. [0003] However, with the development of technology, people have higher and high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/20G02B9/12G02B9/18G02B13/18G02B1/04
Inventor 廖陈成
Owner SINTAI OPTICAL SHENZHEN CO LTD
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