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

Electronic view finder lens

An electronic viewfinder and lens technology, applied in instruments, optical components, optics, etc., can solve the problems of unclear image display details, limited diopter adjustment range, and unclear eyes, etc., to achieve improved color reproduction and geometric transfer The effect of improved function and high imaging definition

Active Publication Date: 2016-05-25
ZHONGSHAN ZHONGYING OPTICAL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, electronic viewfinders (EVF, Electronic Viewfinder) generally have such shortcomings: the field of view is relatively small, the details of the image display are not very clear, and it is difficult to see whether someone's eyes are open or half closed when taking a group photo
The EVF commonly used in the market has a field of view around 20°, a limited range of diopter adjustment, and most of the structures have glass lenses, which are expensive

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
  • Electronic view finder lens
  • Electronic view finder lens
  • Electronic view finder lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] An electronic viewfinder lens includes a lens barrel 100, wherein a first lens 1, a second lens 2 and a third lens 3 are sequentially arranged in the lens barrel 100 from bottom to top, and the first lens 1 is a plastic positive lens. lens, the second lens 2 is a plastic negative lens, the third lens 3 is a plastic positive lens, and the lens barrel 100 is provided with a light-passing hole 200 for human observation. A prism 4 with a positive focal length is arranged between the hole 200 and the third lens 3. The surfaces of the prism 4 facing the third lens 3 and the light-passing hole 200 are all aspherical surfaces, and the prism 4 is used to reflect light. The surface 4a is a total reflection surface. The material of the first lens 1 is PMMA material, and its focal length is positive. The material of the second lens 2 is OKP4HT material, and its focal leng...

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 discloses an electronic view finder lens. The electronic view finder lens comprises a barrel (100), wherein the barrel (100) is sequentially provided with a first lens (1), a second lens (2) and a third lens (3) from down to up, the first lens (1) is a positive plastic lens, the second lens (2) is a negative plastic lens, the third lens (3) is a positive plastic lens, the barrel (100) is provided with a light through hole (200) for eye observation, a positive focal length prism (4) is arranged between the light through hole (200) and the third lens (3), a face of the prism (4) facing towards the third lens (3) and the light through hole (200) is an aspheric face, and a face of the prism (4) used for reflecting light is taken as a full reflection face. The electronic view finder lens is advantaged in that the structure is compact, cost performance is high, and high-definition quality virtual imaging can be realized.

Description

【Technical field】 [0001] The invention relates to an electronic viewfinder lens. 【Background technique】 [0002] The viewfinder is a camera component that is often overlooked but is actually very important. It is often used in the virtual viewfinder optical lens of digital cameras, and can also be used in the latest popular head-mounted high-definition smart mobile theaters. Equipping different types of viewfinders also determines The type of camera, and even the grade of the camera. Electronic viewfinders, popularized by the popularity of single-cameras, have their own unique structure and advantages and disadvantages. With the advancement of electronic technology, electronic viewfinders will become more and more common, and the performance of electronic viewfinders will gradually improve. [0003] At present, the electronic viewfinder (EVF, Electronic Viewfinder) generally has such shortcomings: the field of view is relatively small, the details of the image display are ...

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): G02B13/00G02B13/18
CPCG02B13/0035G02B13/007G02B13/18
Inventor 刘言豆修浔朱佳巍
Owner ZHONGSHAN ZHONGYING OPTICAL
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