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Thin optical lens

An optical lens, thin technology, applied in the field of optical lens, to achieve the effect of reducing the total optical height, reducing the number of concave lenses, and good image quality

Inactive Publication Date: 2020-04-03
世大光电(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the number of lenses is reduced, the diagonal viewing angle needs to be further improved

Method used

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only part of the embodiments for understanding the inventive concepts of the present invention, and cannot represent All the embodiments are not explained as the only embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art on the premise of understanding the inventive concepts of the present invention fall within the protection scope of the present invention.

[0040] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the sp...

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Abstract

The invention relates to a thin optical lens, which is characterized in that a cavity lens group is provided with an airtight cavity, and a first concave arc surface and a second concave arc surface are formed in the airtight cavity; the cemented lens group comprises a first concave-convex lens sheet and a cemented convex lens body, the first concave-convex lens sheet is provided with a first convex cambered surface and a third concave cambered surface, and the second convex cambered surface of the cemented convex lens body coincides with the third concave cambered surface and is provided witha third convex cambered surface deviating from the third concave cambered surface; the light beam convergence part is arranged between the cavity lens group and the bonding lens group, and is provided with a fourth concave arc surface and a fourth convex arc surface; wherein the total optical height of the thin optical lens is less than 16mm, and the diagonal visual angle of the thin optical lenscan be more than 120 degrees. The present invention has an effect of thinning the size of a multi-lens group without compromising optical characteristics.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a thin optical lens, which can be applied to small fixed-focus standard lens groups. Background technique [0002] At present, most of the optical lenses produced by various manufacturers adopt the multi-group lens method described in the optical design textbook. When there are more lens groups, the overall optical performance and imaging quality can be improved. Most of the fixed-focus optical lenses on the market have 5-7 lenses, the aperture range is 2.2-2.8, the viewing angle is 100-160 degrees, and the total optical height of the lens is about 16-24mm. . [0003] With the demand for lightweight products on the market side, the consumer side can no longer meet the conventional fixed-focus lenses in the existing market. Now that the electronic product side generally requires light weight and miniaturization, the existing large-volume optical lenses have already been de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/002G02B13/006G02B13/18
Inventor 杜启明曾嘉健陈柏年
Owner 世大光电(深圳)有限公司
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