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

Focusing device for projection equipment

A technology of projection equipment and anti-rotation, which is applied in projection devices, optics, instruments, etc., can solve the problems of increasing the production cost of projection equipment, large rotation radius of focusing operation, and affecting the appearance of projection equipment, etc., and achieves good assembly process and reduces The effect of production cost and convenience of focusing operation

Active Publication Date: 2014-08-06
HISENSE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the distance between the lens adjustment lever 2 of the optical machine 1 and the housing of the projection device is far away, the radius of rotation of the focusing operation will be relatively large at this time. If the above-mentioned annular projection device focusing device is still used, in order to meet the same The focusing angle will require a lot of structural space, which will cause the shell of the projection device to become very thick, which will greatly affect the appearance of the projection device and increase the production cost of the projection device

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
  • Focusing device for projection equipment
  • Focusing device for projection equipment
  • Focusing device for projection equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] 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 with reference to the accompanying drawings and examples.

[0051] see Figure 3 to Figure 15 , The focusing device of the projection device in this embodiment includes: a lever assembly 11 , a bracket 12 and a rotating shaft 13 . in,

[0052] The bracket 12 is fixed in the housing of the projection device;

[0053] The bracket 12 includes: a rectangular bottom surface and a first side wall 121, a second side wall 122, a third side wall 123 and a fourth side wall 124 which are arranged on four sides of the bottom surface and are connected around; the first side wall 121 and the second side wall The side wall 122 is arranged in the vertical direction, and the third side wall 123 and the fourth side wall 124 are arranged in the horizontal direction; the rectangular bottom surface is provided with a square through ...

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 a focusing device for projection equipment, which comprises a shell of the projection equipement, a stirring lever assembly, a bracket and a rotating shaft, wherein the bracket is fixed in a shell; the bracket comprises a rectangular bottom surface and first, second, third and fourth side walls; the stirring lever assembly comprises a stirring lever and a knob which is arranged at the upper end of the stirring lever and can extend out of the shell of the projection equipment; a shaft hole, which the rotating shaft passes through, is formed in the middle of the stirring lever; the lower end of the stirring lever extends out of a square through hole on the bottom surface of the bracket; a lens adjusting hole which is connected with a lens adjusting rod of the projection equipment is arranged at the lower end of the stirring lever; and the rotating shaft passes through the through hole on the first side wall and the shaft hole on the stirring lever in turn and is inserted into a slot on the second side wall, thereby fixing the stirring lever assembly on the bracket. The focusing device for projection equipment provided by the invention is used for conveniently focusing a lens and the use experience of the user is increased.

Description

technical field [0001] The invention relates to a focus adjustment technology, in particular to a focus adjustment device for projection equipment. Background technique [0002] In commonly used projection equipment, the core optical unit is an optical machine. When using a commonly used projection device, it is often necessary to adjust the focal length of the lens in the projection device according to different usage scenarios, so as to make the projected picture clearer. Therefore, a corresponding lens focusing device is provided in a general projection device for adjusting the focal length of the lens. [0003] see figure 1 and figure 2 , in the projection equipment in the prior art, a lens adjustment lever 2 for adjusting the focal length of the lens is generally arranged at the lens of the optical machine 1 . The lens adjusting lever 2 will move along the chute 3 on the arc surface of the housing of the optical machine 1 while rotating along the center of the 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): G03B21/14
Inventor 张廷森李建春孙砚敏
Owner HISENSE
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