Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultra-wide angle objective lens

An imaging objective lens, ultra-wide-angle technology, applied in optical components, instruments, optics, etc., can solve problems such as distortion of the image surface

Inactive Publication Date: 2009-05-13
阿里克斯·宁
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be noted that the image plane produced by a perfect "f-theta" lens will still be distorted

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
  • Ultra-wide angle objective lens
  • Ultra-wide angle objective lens
  • Ultra-wide angle objective lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Fig. 1 is a brief schematic diagram of the ultra-wide-angle lens 2, as shown in the figure, the object 4 refers to a downward arrow, and it is located in the object space on the left side of Fig. 4, and form an image 6 on the image plane 8 with the light from the object 4. Image 6 is the image of object 4.

[0037] The legend "Lens Entrance Pupil" is one of several legends, each defining an additional feature on the optical schematic. The "optical axis" diagram is shown as optical axis 10. The legend of field angle θ" refers to the angle between the chief ray 12 and the optical axis 10, and the chief ray 12 enters the entrance pupil 14 of the lens. The legend "image height" is located at the apex of the image 16. The height h(θ) of the image is the angle between the optical axis and the Like 16 for the distance between vertices.

[0038] The chief ray 12 extends to the center of the entrance pupil 18 of the lens, then passes through seven optics 20 , 22 , 24 , 26 , 2...

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

A ultra-wide angle objective lens comprising a first group having a first lens element having a convex object surface facing the object and a concave image surface facing the image plane, and a second aspheric lens element, the second aspheric lens element having a varying power that is negative at its vertex; and that increases positively with radial distance from the vertex. A second group has at least one lens element and a positive power. A third group has at least a first and a second lens element and a positive power. The ratio of the total track to the focal length satisfies the condition that TT / fo = < 33 and the image height on a focal plane is h(theta) > f*theta, where h(theta) is the image height formed by an off-axis chief ray having a field angle theta, and f is the effective focal length of the lens.

Description

[0001] This application claims priority from US Provisional Patent 60 / 791,032 filed 04 / 10 / 06 by the same inventor for an ultra wide angle imaging objective. [0002] STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0003] 1 does not exist [0004] The name of any organization with a co-development agreement. [0005] 2 does not exist. [0006] There are reference materials for missions submitted in CD-ROM form. [0007] 3 does not exist [0008] Microfilm Annex Reference. [0009] 4 does not exist [0010] See required list. [0011] does not exist. [0012] technical field of invention [0013] The present invention is a compact lens used in digital cameras, and is especially suitable for super large field of view lenses or fisheye lenses, which are used in very compact digital cameras. Examples of such lenses are also used in surveillance cameras or some other very small electronic devices. technical background [0014] Imaging lenses with a large ...

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): G02B13/06G02B13/04G02B13/18
Inventor 阿里克斯·宁
Owner 阿里克斯·宁
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com