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

Lens assembly of endoscope

A lens component and endoscope technology, applied in the field of endoscope lens components, can solve the problems of short working distance and high cost, and achieve the effects of long working distance, improved quality and reduced production cost

Active Publication Date: 2010-06-09
BYD SEMICON CO LTD
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The working distance behind the existing endoscope lens is relatively short, and at least 5 lenses are used at the same time, and the cost is relatively high

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
  • Lens assembly of endoscope
  • Lens assembly of endoscope
  • Lens assembly of endoscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] figure 1 A schematic structural view of the endoscope lens assembly provided by the present invention is shown, and for convenience of description, only parts related to the present invention are shown.

[0014] This endoscopic lens assembly comprises a front group with negative power, a rear group with positive power, a filter 5 and a fixed diaphragm 6, the front group includes the first negative lens 1, and the rear group includes the self-object The first positive lens 2 and the third positive lens are arranged sequentially from the side to the image side, the fixed diaphragm 6 is locate...

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 a lens assembly of an endoscope, which comprises a front block with negative optical power, a rear block with positive optical power, an optical filter and a built-in diaphragm. The front block comprises a first negative lens; the rear block comprises a first positive lens and a third positive lens orderly arranged from an object space to an image space; the built-in diaphragm is positioned between the first negative lens and the first positive lens; and the optical filter is positioned behind a cemented lens. The lens assembly of the endoscope adopts three pieces of lens and achieves the purposes of getting a long working distance behind the lens, moving the entrance pupil forwards and getting the exit pupil close to apocenter according to the arrangement of each lens to contribute to arranging the infrared optical filter and improving the quality of a colour image; and meanwhile, fewer lenses are adopted so as to reduce the production cost.

Description

technical field [0001] The invention relates to an optical lens assembly equipped with imaging devices such as CCD (Charge Coupled Device) or CMOS, in particular to an endoscope lens assembly. Background technique [0002] The endoscope system has experienced a century of development and is widely used. In recent years, many companies have developed many different types of endoscopes, which are used in medicine and civil industries. The use of more and more endoscopes facilitates clinical diagnosis, relieves patients' clinical pain and improves the level of surgery. The working distance behind the lens of the existing endoscope is relatively short, and at least five lenses are used at the same time, and the cost is relatively high. Contents of the invention [0003] The object of the present invention is to provide an endoscopic lens assembly with a long rear working distance, fewer lenses and a lower cost. [0004] The present invention is achieved in this way, an endos...

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): G02B13/00G02B7/00G02B9/10G02B1/02G02B23/24
Inventor 羊金凤
Owner BYD SEMICON CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com