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A variable focus camera module

A technology of camera module and focal length, which is applied in the field of photography to achieve the effect of simple structure, small volume, and light and thin volume

Active Publication Date: 2019-06-04
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The optical zoom function is generally realized by driving the optical lens in the lens to move in the direction of the optical axis. This optical zoom solution is only suitable for digital cameras, SLR cameras, etc., and is not suitable for products such as mobile phones and tablets that pursue thinness and lightness.

Method used

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  • A variable focus camera module
  • A variable focus camera module
  • A variable focus camera module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 with 2 As shown, a camera module with variable focal length includes an imaging unit 1 and a rotatable reflective prism 2 arranged in the light-incoming direction of the imaging unit 1, and the light of the subject is reflected by the reflective prism 2 projected onto the imaging unit 1 for imaging; the reflective prism 2 includes a first incident surface 21 and a second incident surface 22 for the light to enter, a first exit surface 23 and a second exit surface for the light to exit 24 and the first reflective surface 25 and the second reflective surface 26 for light reflection; the focal lengths of the first incident surface 21 and the second incident surface 22 are different.

[0026] Such as figure 1 As shown, before the rotation of the reflective prism 2, its first incident surface 21 faces the subject, and the first outgoing surface 23 faces the imaging unit 1. The light enters from the first incident surface 21 and passes through the After be...

Embodiment 2

[0036] Such as image 3 with 4 As shown, a camera module with variable focal length includes an imaging unit 1 and a rotatable reflective prism 2 arranged in the light-incoming direction of the imaging unit 1, and the light of the subject is reflected by the reflective prism 2 projected onto the imaging unit 1 for imaging; the reflective prism 2 includes a first incident surface 21 and a second incident surface 22 for the light to enter, a first exit surface 23 and a second exit surface for the light to exit 24 and the first reflective surface 25 and the second reflective surface 26 for light reflection; the focal lengths of the first exit surface 23 and the second exit surface 24 are different.

[0037] Among them, such as image 3 As shown, before the rotation of the reflective prism 2, its first incident surface 21 faces the subject, and the first outgoing surface 23 faces the imaging unit 1. The light enters from the first incident surface 21 and passes through the Afte...

Embodiment 3

[0047] Such as Figure 5 with 6 As shown, a camera module with variable focal length includes an imaging unit 1 and a rotatable reflective prism 2 arranged in the light-incoming direction of the imaging unit 1, and the light of the subject is reflected by the reflective prism 2 projected onto the imaging unit 1 for imaging; the reflective prism 2 includes a first incident surface 21 and a second incident surface 22 for the light to enter, a first exit surface 23 and a second exit surface for the light to exit 24 and the first reflective surface 25 and the second reflective surface 26 for light reflection; the focal lengths of the first incident surface 21 and the second incident surface 22 are different, and, the first exit surface 23 and the second exit surface 24 has a different focal length.

[0048] Among them, such as Figure 5 As shown, before the rotation of the reflective prism 2, its first incident surface 21 faces the subject, and the first outgoing surface 23 fac...

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Abstract

The invention discloses a shooting module with variable focal lengths. The module comprises an imaging unit and a rotatable reflection prism which is arranged in the light entering direction of the imaging unit. The focal length of the first incident face of the reflection prism is different from that of the second incident face, and / or, the focal length of the first emission face is different from that of the second emission face. Before the rotation of the reflection prism, light enters from the first incident face, is reflected by the first reflection face and is emitted out from the first emission face. After the rotation of the reflection prism, the light enters from the second incident face, is reflected by the second reflection face and then is emitted out from the second emission face. According to the invention, conversion of different focal lengths can be achieved and the module is advantageous in that the module is simple in structure, small in size, thin and light.

Description

technical field [0001] The invention relates to the field of imaging, in particular to a variable focal length imaging module. Background technique [0002] At present, the functions of mobile phone camera modules are becoming more and more powerful, from the original low-pixel fixed focus to high-pixel focus using voice coil motors, to closed-loop feedback functions and OIS anti-shake functions, and to multi-camera modules Wait, but it has been difficult for mobile phone camera modules to achieve optical zoom. (It can be realized that all current mobile phones have optical zoom function, but the optical zoom factor is small, and it is difficult to achieve high-magnification optical zoom. VCM is to drive the lens to move to achieve optical zoom. This patent is equivalent to increasing or reducing the zoom on the basis of optical zoom. Multiplier) This patent is applied to periscope modules, and the lens behind the prism can also zoom and move along the optical axis. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/12G02B13/00
CPCG02B13/0065G02B13/12
Inventor 谢荣富
Owner TRULY OPTO ELECTRONICS
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