High resolution day and night micro lens

A micro-lens, high-resolution technology, applied in the direction of optical components, optics, instruments, etc., can solve the narrow, can only be used under the daytime light conditions of 480nm ~ 700nm, performance indicators vary, can not meet the needs and other problems, to achieve Compact structure design, compact structure, light weight effect

A micro-lens, high-resolution technology, applied in the direction of optical components, optics, instruments, etc., can solve the narrow, can only be used under the daytime light conditions of 480nm ~ 700nm, performance indicators vary, can not meet the needs and other problems, to achieve Compact structure design, compact structure, light weight effect

CN104459950BActive Publication Date: 2016-08-24FUJIAN FORECAM OPTICS CO LTD
5 Cites 0 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High resolution day and night micro lens
  • High resolution day and night micro lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] like figure 1 As shown, a high-resolution day and night dual-purpose miniature lens, the optical system of the lens is sequentially provided with a front group A with a negative focal power and a rear group B with a positive focal power along the incident direction of the light from left to right. The front group A is sequentially provided with a positive meniscus lens A-1, a negative meniscus lens A-2 and a biconvex lens A-3, and the rear group B is sequentially provided with a positive meniscus lens B-1, A cemented set of single concave lens B-2 and biconvex lens B-3 in close contact and biconvex lens B-4.

[0020] In this embodiment, the air gap between the front group A and the rear group B is 7.01 mm; the positive meniscus lens A-1 and the negative meniscus lens A-2 in the front group A The air interval is 2.354mm, and the air interval between the negative meniscus lens A-2 and the biconvex lens A-3 is 0.576mm; the positive meniscus lens B-1 in the rear group B an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high-resolution miniature lens for daytime and night. An optical system of the lens is sequentially provided with a front set A with the focal power being negative and a rear set B with the focal power being positive in the incidence direction of light. The front set A is sequentially provided with a positive crescent lens A-1, a negative crescent lens A-2 and a biconvex lens A-3. The rear set B is sequentially provided with a positive crescent lens B-1, a single concave lens B-2, a gluing set closely connected with a biconvex lens B-3 and a biconvex lens B-4. The lens can form clear images in the light environment of daytime, also can form clear images in the low-light-level environment of night through infrared light supplementation, has the advantages of being small in distortion, large in relative aperture, high in resolution, high in performance cost ratio, wide in application range and the like and can adapt to the requirement of 5-mega-pixel high-resolution video shooting, thereby being a mainstream product for home monitoring.

Description

technical field [0001] The invention relates to a camera lens device of a miniature video camera system, in particular to a high-resolution day and night dual-purpose miniature lens. Background technique [0002] After 20 to 30 years of evolution and development of small TV surveillance cameras, there are currently a variety of miniature camera lenses of various specifications and models for use with them. However, the performance indicators of these lenses vary, and most of them are low-end products with low performance indicators, which are only suitable for ordinary cameras with 200,000 to 300,000 pixels; the adaptive spectral range is narrow, and they can only be used under daytime light conditions of 480nm to 700nm; The amount of image distortion is large, the difference between the image distortion and the real scene becomes larger, and the authenticity is poor. Therefore, none of these lenses can meet current needs. [0003] Thanks to the development of science and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
24 Aug 2016
Publication
CN104459950B
IPC
G02B13/14; G02B13/00
CPC
G02B13/006; G02B13/14; G02B27/0025
Inventors
郑志勇; 刘辉