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Glass-plastic hybrid lens

A lens and lens technology, applied in the field of optical components, systems or devices, can solve the problem that the front end of the lens cannot meet the diameter, and achieve the effect of day and night confocal, small size, and expanded use range

Pending Publication Date: 2021-12-31
舜宇光学(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the diameter of the front port of the lens cannot meet the needs of practical applications.

Method used

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Examples

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Embodiment Construction

[0054] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

[0055] When describing the embodiments of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientation or positional relationship expressed by "horizontal", "top", "bottom", "inner" and "outer" is based on the orientation or positional relationship shown in the relevant drawings, which are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particu...

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Abstract

The invention relates to a glass-plastic hybrid lens, which comprises a first lens (L1) with negative focal power, a diaphragm (STO), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5) and a sixth lens (L6) with negative focal power, which are sequentially arranged from an object side to an image side along an optical axis; wherein the focal power of the second lens (L2), the focal power of the third lens (L3) and the focal power of the fourth lens (L4) are all positive or negative; and the focal power of at least one of the second lens (L2), the third lens (L3) and the fourth lens (L4) is negative; and the focal power of the fifth lens (L5) is positive. The aperture of the front end of the lens is small, the size is smaller while the actual application requirement is met, and high pixel is guaranteed while a large aperture is achieved.

Description

technical field [0001] The invention relates to the technical field of optical elements, systems or devices, in particular to a glass-plastic hybrid lens. Background technique [0002] Fixed-focus lenses are widely used in the security surveillance lens industry. For example, for criminal investigation, anti-narcotics, anti-smuggling, national security, security, anti-corruption, anti-terrorism, anti-evil and on-site negotiation, interrogation room and other application fields, pinhole lenses with small front apertures are required to meet practical applications. [0003] The glass-plastic hybrid fixed-focus lens disclosed in Chinese patent CN210142227U specifically includes that the focal powers arranged in sequence along the optical axis from the object side to the image side are negative, negative, positive, positive / negative, positive, and negative, and have a specific surface type The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/14G02B1/00G02B1/04
CPCG02B13/0045G02B13/008G02B1/00G02B1/041
Inventor 邓建伟翟林燕梁伟朝
Owner 舜宇光学(中山)有限公司
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