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

Projection device

A projection device and projection lens technology, applied in projection devices, optics, instruments, etc., can solve problems such as not being suitable for mass production, affecting focusing distance, and component tolerances

Inactive Publication Date: 2008-04-16
BENQ CORP
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the projection lens and digital micro-mirror components are installed on the optical-mechanical casing, and there are parts tolerances when the optical-mechanical casing is manufactured.
Since the digital micromirror element and the projection lens are precision optical elements, as long as there is some assembly error, it will affect the focus distance
Therefore, the cumulative tolerance of the aforementioned three factors has a great influence on the quality of focus
If the tolerances of the casing, projection lens and digital micromirror components are improved separately, the cost will be very high and it is not suitable 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
  • Projection device
  • Projection device
  • Projection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Please refer to figure 1 , which shows a schematic diagram of a projection device according to a preferred embodiment of the present invention. Such as figure 1 As shown, the projection device 1 includes a casing 10 , an optical-mechanical casing 20 , a first optical module 30 , a second optical module 40 , a reflector 50 , a bulb 60 and a fine-tuning structure 70 . The optical-mechanical casing 20 and the light bulb 60 are disposed in the casing 10 . The first optical module 30 , the second optical module 40 , the reflector 50 and the fine-tuning structure 70 are disposed on the optical-mechanical housing 20 . Wherein, the light bulb 60 is used to generate light, which is reflected by the reflector 50 , and then passes through the first optical module 30 and the second optical module 40 in order to project an image from the second optical module 40 onto the screen. The fine-tuning mechanism 70 is arranged on the optical-mechanical housing 20 to adjust the distance b...

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 projecting device comprising an optical machine casing, an optical module and a fine tuning structure. The optical module is arranged on the optical machine casing. The fine tuning structure comprises a flexible element and a latch fitting, wherein, the flexible element is arranged between the optical machine casing and the optical module and has a height, and the latch fitting is in coupling with the flexible element for connecting the optical machine casing and the optical module. When the latch fitting is adjusted, the distance between the optical machine casing and the optical module is changed; the optical machine casing and the optical module simultaneously are used to compress or release the flexible element, thereby changing the height of the flexible element and maintaining the distance through the flexible element after the latch fitting is adjusted.

Description

technical field [0001] The invention relates to a projection device, in particular to a projection device with a fine-tuning structure for adjusting the parallelism of a projection lens and a digital micromirror element. Background technique [0002] The technology of projectors is developing rapidly. In addition to the continuous growth of the projector market for commercial use, the market for projectors for home entertainment is also growing rapidly. Projectors can generally be divided into rear projection and front projection projectors. Take the digital light processing (DLP) projector of the previous projection projector as an example, which mainly includes a projection lens, a light engine (light engine), and a digital micro-mirror device (digital micro-mirror device, DMD). The digital micromirror element is mainly composed of multiple mirror elements. After the light bulb in the projector generates light, it is reflected to the projection lens by the digital micromi...

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): G03B21/14
Inventor 郭建峰
Owner BENQ 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