Small imaging device and zoom lens

A technology of zoom lens and camera device, which is applied in the field of photography, can solve the problems of increased camera thickness and reduced user experience, and achieve the effects of miniaturization, increased experience, and reduced moving range

Active Publication Date: 2020-08-07
JIAXING ZHONGRUN OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in the prior art, in order to increase the optical zoom magnification, it is often necessary to expand the moving range of the group, so that the length of the camera increases accordingly. Group driving force, the thickness of the camera also increases, reducing the user experience

Method used

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  • Small imaging device and zoom lens
  • Small imaging device and zoom lens
  • Small imaging device and zoom lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment one: if figure 1 with figure 2 As shown, a small camera device includes:

[0038] zoom lens;

[0039] and an image pickup element configured to receive an image formed by the zoom lens; the image pickup element is a CCD or a CMOS, and the image pickup element can be arranged on the image side IMG of the folding zoom optical lens.

[0040] The zoom lens includes in order from the object plane side to the image plane side:

[0041] The front lens group G1, the reflection assembly G2, the first lens group G4 and the second lens group.

[0042] The reflection component G2 is used to reflect the light received by the front lens group G1 to the first lens group G4. Specifically, the reflection component G2 is mainly a component such as a reflection prism or a reflection plate that can greatly change the angle of the light.

[0043] The first lens group G4 moves along the optical axis of the zoom lens. In this embodiment, the first lens group G4 can move left and...

Embodiment 2

[0055] Embodiment two: if figure 1 with figure 2 As shown, a small camera device, the difference between this embodiment and the first embodiment lies in the specific parameters of the zoom lens.

[0056] On the basis of Embodiment 1, in this embodiment, the zoom lens satisfies the following conditional formula:

[0057] 3.9mm

[0058] f2max > 0;

[0059] 0.4

[0060] Wherein, f is the focal length of the zoom lens, f2max is the maximum focal length among the focal lengths of multiple second lens groups G5, D2max is the maximum optical total length among the multiple optical total lengths of the second lens group G5, TTL is the total optical length of the zoom lens.

[0061] In this embodiment, through the limitation of the above conditional formula, under the condition that the performance of the zoom lens is less affected, the total optical length of the second lens group G5 is reduced, which is beneficial to realize the miniaturization of the...

Embodiment 3

[0079] Embodiment three: as figure 1 with figure 2 As shown, a small camera device includes:

[0080] zoom lens;

[0081] and an image pickup element configured to receive an image formed by the zoom lens;

[0082] The zoom lens includes in sequence from the object plane side to the image plane side: a front lens group G1 with negative diopter power, a reflection assembly G2, an adjustment lens group G3 with positive diopter power, a stop STP, a first lens group G4 with positive diopter power, Second lens group and auxiliary component G6.

[0083] The front lens group G1 is the first lens L1 with negative refractive power.

[0084] The reflection component G2 is a prism, the prism is preferably a triangular prism, and the prism is used to reflect the light received by the front lens group G1 to the first lens group G4; the side of the prism facing the front lens group G1 is the incident surface, and the second prism faces the first lens group G4. One side of the lens gro...

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Abstract

The invention discloses a small camera device and a zoom lens, and relates to the technical field of camera shooting. The device comprises: a zoom lens; and an image pickup element configured to receive an image formed by the zoom lens. The zoom lens sequentially comprises a front lens group, a reflection assembly, a first lens group, a second lens group and an image pickup element from an objectplane side to an image plane side. The reflection assembly is used for reflecting the light received by the front lens group to the first lens group. The first lens group moves along the optical axisdirection of the zoom lens. The second lens group includes a plurality of second lens groups, each of which can be individually disposed between the first lens group and the image pickup element. According to the invention, the total optical length of the zoom lens is effectively reduced, the total length of the camera device is further reduced, the miniaturization of the camera device is realized, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of camera technology, in particular to a small camera device and a zoom lens. Background technique [0002] Cameras, waterproof digital cameras, there are many types of cameras, and the basic principle of their work is the same: to convert optical image signals into electrical signals for storage or transmission. When we shoot an object, the light reflected on the object is collected by the camera lens, making it focus on the light-receiving surface of the imaging device (such as the target surface of the imaging tube), and then the light is converted into electrical energy by the imaging device, that is, "Video Signal". The photoelectric signal is very weak and needs to be amplified by a pre-amplification circuit, and then processed and adjusted by various circuits. The final standard signal can be sent to a recording medium such as a video recorder for recording, or transmitted through a communication system or sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/04G02B15/20G03B17/17
CPCG02B15/04G02B15/20G03B17/17
Inventor 厉冰川菊地修一诸益炜
Owner JIAXING ZHONGRUN OPTICAL TECH
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