Image display device, and projector
A technology for image display devices and projectors, applied in projection devices, optics, instruments, etc., can solve the problems of reduced light utilization efficiency, increased device cost, and overall size increase, so as to improve light utilization efficiency, suppress size increase, The effect of suppressing the number of parts
Inactive Publication Date: 2010-12-01
SEIKO EPSON CORP
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When a predetermined optical system is used to achieve a uniform illuminance distribution, there is a possibility that the desired image cannot be obtained through the positional relationship between the laser and the optical system
In addition, due to the structure of the optical system, there is a possibility that the overall size of the device will be increased, complicated, or the cost of the device will be increased.
In addition, due to the structure of the optical system, there is a possibility of causing a decrease in light utilization efficiency, etc.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
no. 1 Embodiment
no. 2 Embodiment
no. 3 Embodiment
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
Login to View More
Abstract
An image display device includes: a laser light source device emitting laser light; and a diffractive optical element on which the laser light emitted from the laser light source device is incident, generating diffracted light from the incident laser light, and illuminating the first face with the diffracted light, the first face is provided at a position on which zero-order light emitted from the diffractive optical element is not incident, and an image is displayed by light via the first face.
Description
Image display device and projector technical field The present invention relates to a lighting device, an image display device and a projector. Background technique In the past, projection type image display devices (projectors) have been known. Projection-type image display devices use a projection system to project colored light with image information formed by a spatial light modulation device such as a liquid crystal device on a screen. In projection-type image display devices, techniques have been proposed in which laser light is used as a light source, as described in JP-A-11-64789 and JP-A-2000-162548. In such a projection-type image display device, it is necessary to illuminate the incident surface of the spatial light modulation device with a uniform illuminance distribution by laser light. When a predetermined optical system is used to achieve a uniform illuminance distribution, there is a possibility that a desired image cannot be obtained due to the posit...
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
Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G03B21/00
Inventor 山内泰介武田高司
Owner SEIKO EPSON 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 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