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

Reflective type wide angle lens

A wide-angle lens and reflective technology, applied in the field of wide-angle lenses, can solve problems such as complex manufacturing process and unfavorable mass production

Active Publication Date: 2018-07-27
JIANGXI XINGCHI ELECTRONIC TECH CO LTD
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when assembling and producing ultra-short-focus lenses, it is still necessary to fine-tune the position of certain lenses in the lens to obtain a clearer image, resulting in a more complicated manufacturing process, which is not conducive to the demand for mass production.

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
  • Reflective type wide angle lens
  • Reflective type wide angle lens
  • Reflective type wide angle lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to provide a thorough understanding of this creation, many specific details are presented in the narrative that follows. The disclosed embodiments may be practiced without some or all of the specific details. Well-known operations and principles are not described in detail so as not to unnecessarily obscure the disclosed embodiments. While the disclosed embodiments are described in conjunction with particular examples, it should be understood that there is no intent to limit the disclosed embodiments. When certain embodiments are described in terms of relative descriptors (eg, "left" versus "right," or "upper" versus "lower," etc.), these terms are used for ease of understanding and are not intended to be limiting. sexual.

[0038] This creation provides a reflective wide-angle lens with an ultra-short focal length, which is suitable for use with a large aperture (FNO1.7), fewer lenses, shorter lens length, no need for detailed lens adjustment when manufactur...

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 present invention relates to a reflective type wide angle lens with large aperture (e. g., FNO 1.7) and low throw ratio (e. g., TR <= 0.2). The reflective type wide angle lens is capable of reducing the lens size and the number of lenses needed while focusing clearly on a wide range of screen sizes. The reflective type wide angle lens comprises a front lens group and a rear lens group. The front lens group comprises a first lens group and a second lens group. The rear lens group comprises a curved reflective mirror. The first lens group at least comprises a cemented triplet lens, an aspherical lens, and two spherical lenses. The second lens group at least comprises two aspherical lenses and two spherical lenses. The curved reflective mirror is an axially symmetrical concave asphericalreflective mirror.

Description

technical field [0001] This case involves a wide-angle lens using a curved mirror, specifically an ultra-short-throw reflective projection lens for projection. Background technique [0002] With the progress of the key components of the projector, the resolution of the display components has reached 4K / 2K, and the brightness of the matching light source, whether it is LED or laser, is also increasing day by day, making projection products more mature for entering the home market. [0003] Short-throw projection can greatly shorten the distance between the projector and the screen, and often only a few tens of centimeters of projection distance can project hundreds of inches of images. The short-throw projector can be placed on the TV cabinet in the same position as the general TV, so it saves space and has the advantages of installation compared with the general long-throw projector, so the short-throw projector is easier to use than the general projector practical. [000...

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): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/006G02B13/0065G02B13/06G02B13/18G02B17/08G02B13/16G03B21/28G02B17/0816
Inventor 孔建平苏文露
Owner JIANGXI XINGCHI ELECTRONIC TECH CO LTD
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