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Imaging zoom camera lens

A zoom lens and imaging technology, applied in optical components, optics, instruments, etc., can solve the problem of high technical difficulty of miniaturized lenses, and achieve the effect of meeting the requirements of imaging quality, high imaging quality, and light and thin volume

Inactive Publication Date: 2017-08-11
TAN CIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the technical difficulty of miniaturized lenses is significantly higher than that of traditional lenses. Therefore, how to produce optical imaging lenses that meet the needs of portable electronic products and continuously improve their imaging quality has long been an eager pursuit of industry, government and academic circles in this field. The goal

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  • Imaging zoom camera lens
  • Imaging zoom camera lens
  • Imaging zoom camera lens

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Embodiment Construction

[0077] Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

[0078] refer to figure 1 and figure 2 , respectively showing the positions of the lenses at the wide-angle end (wide) and the telephoto end (tele) of a first embodiment of the imaging zoom lens of the present invention. The first embodiment of the imaging zoom lens of the present invention sequentially includes a first lens group G1 whose equivalent focal length is a positive value along an optical axis I from the object side to the image side, and a second lens group G1 whose equivalent focal length is a positive value. Lens group G2, a third lens group G3 with a negative equivalent focal length, and a filter 8. When the light emitted by an object to be photographed (not shown in the figure) enters the imaging zoom lens, and passes through the first lens group G1, the second lens group G2, the third lens gr...

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Abstract

The invention provides an imaging zoom camera lens comprising a first lens group, a second lens group and a third lens group which are arranged from an object side to an image side in turn along an optical axis. The first lens group has positive equivalent focal length and comprises an aperture diaphragm. The second lens group has positive equivalent focal length. The third lens group has negative equivalent focal length, and the imaging zoom camera lens meets the following expressions: 1.31<f1 / fw<2.87; 0.62<f2 / fw<1.06; 0.45<|f3| / fw<1.00, 1.33<TTLw / ImagH<4.00; and 1.50<ft / fw<5.00, wherein f1 is the equivalent focal length of the first lens group, f2 is the equivalent focal length of the second lens group, f3 is the equivalent focal length of the third lens group, TTLw is the total length of the imaging zoom camera lens of the minimum multiplying power, ImagH is the imaging height of the imaging zoom camera lens on an imaging plane, ft is the system focal length of the imaging zoom camera lens of the maximum multiplying power, and fw is the system focal length of the imaging zoom camera lens of the minimum multiplying power.

Description

technical field [0001] The invention relates to an imaging zoom lens, in particular to an imaging zoom lens for portable electronic products. Background technique [0002] In recent years, the popularization of portable electronic products such as mobile phones and digital cameras has led to the vigorous development of imaging module related technologies. The imaging module mainly includes components such as optical imaging lens, module holder unit and sensor. The thin and light trend of digital cameras also makes the miniaturization of image modules more and more demanding. Due to the technological progress and size reduction of CMOS), the optical imaging lens loaded in the image module also needs to be reduced in size accordingly. optical performance. However, the most important characteristics of this optical imaging lens are nothing more than imaging quality and volume. [0003] However, the technical difficulty of miniaturized lenses is significantly higher than that...

Claims

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Application Information

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IPC IPC(8): G02B15/14G02B13/00G02B13/18
CPCG02B15/14G02B13/004G02B13/0045
Inventor 张世远
Owner TAN CIAN TECH CO LTD