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an add-on lens

A technology for attaching a lens and a lens barrel, which is applied in the field of optical imaging and can solve problems such as occasions where the attached lens cannot be applied to temperature requirements.

Active Publication Date: 2022-08-02
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the purpose of the present invention is to provide an additional lens to solve the technical problem that the additional lens in the prior art cannot be applied to occasions with temperature requirements

Method used

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Examples

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Embodiment Construction

[0025] In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Several embodiments of the invention are presented in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

[0027] Unless otherwise defined, ...

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Abstract

The present invention provides an additional lens, which includes a lens barrel and a lens assembly disposed in the lens barrel. A gas permeable layer is provided on the inner wall of the lens barrel, and a plurality of ventilation holes are arranged in the gas permeable layer. The areas where the respective lenses are located are communicated through the ventilation holes. In the present invention, a breathable layer is arranged on the inner wall of the lens barrel, and a plurality of breathable holes are arranged in the breathable layer, so that the areas where each lens in the lens is located are communicated with each other through the breathable holes, so that no local gas occurs inside the lens barrel. The phenomenon of expansion, so as to ensure that the lens will not be compressed by the local expansion gas and deviate from the original position, so that the additional lens can be suitable for occasions with temperature requirements.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an additional lens. Background technique [0002] With the popularity of lenses in all walks of life, the application scenarios are becoming more and more extensive, and the shooting needs are becoming more and more diverse. In order to meet the performance needs and achieve a better shooting experience, an additional lens is added outside the original shooting system to achieve better imaging effects and meet the needs of users. For example, SLR cameras are typically equipped with one or more add-on lenses, which can be attached to the main lens of the SLR camera when needed. [0003] In the prior art, when the currently used add-on lens works under high temperature conditions, the gas inside the lens will expand, causing the lens inside the lens to be compressed and deviated from the original position. occasion. SUMMARY OF THE INVENTION [0004] Based on this, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B17/02G03B17/12G02B7/02
Inventor 洪小白朱海海
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD