Unlock instant, AI-driven research and patent intelligence for your innovation.

Wide-angle imaging lens

An imaging lens and lens technology, applied in optical components, optics, instruments, etc., can solve the problems of inconvenient portability, long overall length, complex structure, etc., and achieve the effect of easy splicing, short overall length, and light volume

Active Publication Date: 2016-11-16
BEIJING NEDPLUSAR DISPLAY TECH CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a wide-angle lens system only has a total viewing angle of about 120 degrees, and such a range of viewing angles is obviously not capable of photographing a wide-angle range
[0003] On the other hand, Japanese Patent Application Publication No. 2004-102162 discloses a wide-angle lens system, which can provide a total viewing angle of about 170 degrees to the shooting area. This wide-angle lens system is composed of up to eight lens elements with relative Complicated structure and long overall length, the cost is significantly increased and there is a lot of inconvenience in carrying

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wide-angle imaging lens
  • Wide-angle imaging lens
  • Wide-angle imaging lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0035] Such as figure 1 As shown, according to a wide-angle imaging lens according to the first embodiment of the present invention, the first lens group is arranged in sequence along the light incident direction from the object side (object side) to the image forming side (image forming side), and the first lens group is located at the first lens The photorefractive element P, the diaphragm S behind the group optical path, and the second lens group and the optical imaging device behind the diaphragm; wherein the refractive index of the material forming the photorefractive element P is greater than the refractive index of the surrounding medium (such as air);

[0036] As a feature of the present invention, the optical refraction element P arranged between the first and second lens groups, its geometric center point O is located on the optical axis, the optical axis distance from the first lens group object side vertex to O point for l front , the optical axis distance from th...

no. 2 example

[0058] Another embodiment of the present invention differs from the first embodiment and its modifications in the type of light refraction element P. FIG. Such as Figure 9 As shown, in the wide-angle imaging lens according to the second embodiment of the present invention, the photorefractive element P is a ball lens, and the spherical center point O is located on the optical axis, and consistent with the first embodiment, from the object side of the first lens group The optical axis distance from the vertex to point O is l front , the optical axis distance from the geometric center point O to the imaging surface of the imaging device is l rear :l front with l rear and satisfied And further preferably satisfy: |l front -l rear |≤2mm.

[0059] When the photorefractive element P is as Figure 9 In the form of the ball lens shown, its two planes constitute a spherical surface and have a fixed refractive power. At this time, the first lens group includes not only lens L1...

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 small-sized wide-angle lens which is capable of realizing high-quality imaging in a large field of view. An image of the edge of field of view matches an image of the edge of field of view of another wide-angle lens. Panoramic image synthesis is completed through image processing. The wide-angle imaging lens can be used as a single wide-angle lens, and is suitable for a panoramic image forming device composed of a number of wide-angle lenses.

Description

technical field [0001] The present invention relates to a small wide-angle imaging lens, in particular, to a low-cost, small wide-angle lens system suitable for solid-state image sensors, and the wide-angle lens system is suitable for digital images such as video phones, panoramic cameras, virtual reality shooting devices, etc. Camera equipment with good optical performance. Background technique [0002] Wide-angle lens systems for solid-state image sensors are generally known. For example, Japanese Patent Application Publication No. H6-34879 and Japanese Patent Application Publication No. 2001-337268 disclose a three-lens structure wide-angle lens system. However, such a wide-angle lens system only has a total viewing angle of about 120 degrees, and such a range of viewing angles is obviously not suitable for photographing a wide-angle range. [0003] On the other hand, Japanese Patent Application Publication No. 2004-102162 discloses a wide-angle lens system, which can p...

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
no application Login to View More
IPC IPC(8): G02B13/06G02B13/00
CPCG02B13/0015G02B13/06
Inventor 程德文
Owner BEIJING NEDPLUSAR DISPLAY TECH CO LTD