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

Optical lens, optical system unit and imaging apparatus

An optical lens and light incident technology, applied in the direction of optical components, optics, instruments, etc., can solve the problems of reduced UV resistance and useless light transmittance of optical lenses, achieve excellent optical properties, suppress the change of refractive index with temperature, The effect of high durability

Inactive Publication Date: 2010-09-15
FUJIFILM CORP
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in an optical lens made of a nanocomposite material containing such inorganic fine particles, ultraviolet resistance gradually decreases, and in relation thereto, the optical lens becomes practically useless due to deterioration of light transmittance over time

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
  • Optical lens, optical system unit and imaging apparatus
  • Optical lens, optical system unit and imaging apparatus
  • Optical lens, optical system unit and imaging apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] [thermoplastic polymer]

[0018] The thermoplastic polymer (thermoplastic resin) effectively used for producing the optical lens of the present invention has a functional group capable of forming any kind of chemical bond with inorganic fine particles at least one of the main chain end (polymer chain end) or side chain.

[0019] Preferred examples of such thermoplastic polymers include:

[0020] (1) A thermoplastic polymer having at least one functional group selected from the following functional groups in the side chain:

[0021] [chemical formula 1]

[0022]

[0023] [R 11 , R 12 , R 13 and R 14 Each of may be any of the following groups: a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, or a substituted or unsubstituted aryl group] 、-SO 3 H, -OSO 3 H, -CO 2 H, and -Si(OR 15 ) m1 R 16 3-m1 [R 15 and R 16 Each of is a hydrogen atom, a substituted or...

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

PropertyMeasurementUnit
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

In a surveillance camera 2, an optical system unit for use in imaging is provided with a first lens 7, a second lens 8, a third lens 9, and a fourth lens 10, and a subject image is formed on a photoelectric surface 12 of an imaging element through a cover glass 11. The third lens 9 is an optical lens made of a nanocomposite material of the invention in which inorganic fine particles are dispersed. A thin film layer 15 that blocks UV rays is formed on a light incident surface of the third lens 9. After passing through the first lens 7 and the second lens 8, UV rays contained in subject light are blocked by the thin film layer 15 and therefore cannot enter the third lens 9.

Description

technical field [0001] The present invention relates to an optical lens made of a thermoplastic polymer, an optical system unit including the optical lens, and an imaging device using the optical system unit. Background technique [0002] Optical lenses formed from transparent plastic materials such as acrylic or PMMA are used in a variety of optical devices. In contrast to optical glass, conventional plastic materials that can be used to produce optical lenses have drawbacks such as the inability to increase the refractive index to high values ​​and the change in focal length with temperature as a function of the refractive index. In order to overcome the disadvantages, the use of various nanocomposite materials (organic-inorganic hybrid materials) in which nanoscale inorganic particles are dispersed in a plastic matrix has been investigated. [0003] The nanocomposite material disclosed in Japanese Patent Laid-Open No. 2005-055852 is obtained by adding niobium oxide (Nb ...

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 Applications(China)
IPC IPC(8): G02B1/04C08K3/22C08L101/02G02B5/22
CPCG02B13/06G02B1/041
Inventor 山川博充宫野俊铃木荣一大林达彦渡边清一
Owner FUJIFILM CORP
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