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

Athermal visible light zoom lens

A zoom lens, visible light technology, applied in optics, optical components, instruments, etc., can solve the problems of reduced system reliability, increased system volume and complexity, etc. The effect of improving system reliability

Active Publication Date: 2014-02-26
BEIJING ZHENXING METROLOGY & TEST INST
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases the size and complexity of the entire system, and reduces the reliability of the entire system

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
  • Athermal visible light zoom lens
  • Athermal visible light zoom lens
  • Athermal visible light zoom lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention combines the passive athermalization design method and the zoom optical design method. The passive athermalization design method is a design method that eliminates the influence of temperature and realizes athermalization by relying only on the imaging principle of optics itself and the matching of thermal characteristics of optical materials and mechanical structure materials without adding any focusing mechanism. The zoom optical design method is to realize the complete compensation of the image plane through the non-correlated movement between the zoom lens group and the compensation lens group in the optical system. When the focal length is changed, the imaging quality of the optical system remains unchanged.

[0021] The passive athermalization design method adopted in the present invention does not add any focusing mechanism, and only relies on the optical self-imaging principle and the matching of thermal characteristics of optical materials ...

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 provides an athermal visible light zoom lens. The lens comprises a balsaming lens group I, a lens I, a balsaming lens group II, a balsaming lens group III, a lens II and a lens III in sequence, wherein the balsaming lens groups and the lenses are connected by an aluminium alloy lens cone. The zoom lens has the following beneficial effects: by adopting passive athermal design and zoom optical design and reasonably matching the materials, radii, distance and thickness parameters of the lenses, the focal length of the lens can vary between 20mm and 80mm and the lens can realize passive athermalization in the temperature range from minus 40 DEG C to 60 DEG C, thus dispensing with the temperature measuring and focusing mechanisms and improving the system reliability; and besides, by adopting passive athermal design and zoom design technology and reasonably matching the materials, radii, distance and thickness parameters of the lenses, the aberrations such as spherical aberration, coma, astigmatism, curvature of field, chromatic aberration and distortion are reduced and the optical transfer function of the lens is improved, so that the lens can carry out zoom imaging on the sceneries in the temperature range from minus 40 DEG C to 60 DEG C. The lens is used for shooting visible light sceneries remotely.

Description

technical field [0001] The invention relates to a visible light zoom imaging optical system, in particular to an athermalized visible light zoom lens, which belongs to the technical field of optical system design. Background technique [0002] The refractive index value of the optical material changes with the change of the ambient temperature, and the material of the lens barrel will also expand with heat and contract with the change of temperature. When the ambient temperature changes greatly, such as in the temperature range of 100°C, the image plane of the optical lens will be defocused, and the imaging detector will not be able to obtain an image that meets the requirements. Zoom optical lens means that when the focal length of the optical lens changes within a certain range, the focal plane position of the lens remains unchanged and the image remains clear during the zooming process. If you want to broaden the operating temperature range of the visible light zoom lens...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/00G02B1/00
Inventor 王加朋孙红胜张玉国任小婉
Owner BEIJING ZHENXING METROLOGY & TEST INST
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