Wide-angle high-definition day and night optical path structure and miniature camera lens

Abstract

The invention relates to a wide-angle high-definition day and night dual-purpose optical path structure and a micro camera lens. The front group of lenses composed of negative crescent-shaped wafer lenses, double-convex lenses, the first cemented group formed by the second double-convex lens and the third negative crescent-shaped wafer lens, and the second cemented group formed by the third double-convex lens and the fourth negative crescent-shaped wafer lens group, a spacer is abutted between the front group of lenses and the biconvex lens, a second spacer is abutted between the biconvex lens and the first cemented group, and a spacer is abutted between the first cemented group and the second cemented group A third spacer is abutted against, and a front pressure ring is screwed to the front end of the main lens barrel. The optical path structure is not only simple and compact, and the image quality is clear, but also the miniature camera lens manufactured by using it has a wide range of applications.

Description

technical field [0001] The invention relates to a wide-angle high-definition day and night dual-purpose optical path structure and a miniature camera lens. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years. There are various specifications and models of miniature camera lenses to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators. Suitable for ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and can only be used under daytime light conditions of 480nm to 700nm. Contents of the invention [0003] The object of the present invention is to provide a wide-angle high-definition day and night dual-purpose optical path structure and a miniature camera lens. The optical path structure is not only simple and compact, but the image quality is clear, and the miniature camera lens manufactured by using it h...

AI Technical Summary

Problems solved by technology

[0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years. There are various specifications and models of miniature camera lenses to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators. Applicable to ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and can only be used under daytime light conditions of 480nm to 700nm

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