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Projector

A projector and projection technology, applied in the field of projectors, can solve problems such as difficulty in reliably avoiding discomfort

Active Publication Date: 2008-06-11
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, with the conventional technology, there is a problem that it is difficult to reliably avoid the occurrence of the uncomfortable feeling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]FIG. 1 shows a schematic configuration of a projector 10 according to Embodiment 1 of the present invention. The projector 10 is a front projector and projects light corresponding to an image signal. The projector 10 is arranged on the cabinet C arranged near the wall surface W, and is arranged at a position facing the extension surface S1 of the surface to be irradiated S0 . The projector 10 performs proximity projection from a position close to the extension surface S1. The projector 10 includes a projection engine unit 11 . The projection engine unit 11 projects the light modulated according to the image signal onto the irradiated surface S0 from a position facing the extended surface S1. The projection engine unit 11 includes an optical engine 12 , a projection lens 13 and an aspheric mirror 14 .

[0040] FIG. 2 shows a schematic configuration of the optical engine 12 . The light source unit 21R for red (R) light supplies R light and is a semiconductor laser supp...

Embodiment 2

[0073] FIG. 10 shows a three-dimensional structure of a projector 40 according to Embodiment 2 of the present invention. The projector 40 of this embodiment is characterized by having a first detection unit 41 and a second detection unit 42 . The same reference numerals are attached to the same parts as in the first embodiment described above, and repeated explanations are omitted. The first detection unit 41 and the second detection unit 42 are used to detect intruding objects. The first detection unit 41 and the second detection unit 42 are, for example, infrared sensors. The first detection unit 41 and the second detection unit 42 may also be devices that detect changes in electromagnetic radiation other than infrared rays, imaging elements, ultrasonic sensors, and the like. The first detection part 41 and the second detection part 42 are respectively provided on the opposite side of the extension surface S1 (see FIG. 1 ) in the housing 17 and are located at the upper rig...

Embodiment 3

[0083] FIG. 14 is a diagram illustrating a projector 60 according to Embodiment 3 of the present invention. The same reference numerals are attached to the same parts as in the first embodiment described above, and repeated explanations are omitted. The projector 60 has a structure in which the projector 10 (see FIG. 1 ) of the above-described first embodiment is reversed upside down. The projector 60 is suspended from the ceiling surface T. As shown in FIG. The projector 60 performs proximity projection from a position facing the extension surface S1 and from a position above the screen 16 .

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PUM

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Abstract

A projector includes a projection engine section for projecting light corresponding to an image signal toward an irradiated surface, a housing for housing the projection engine section, the housing including an emission section for projecting the light corresponding to the image signal from the projection engine section towards the irradiated surface, a detection section for detecting an entering matter entering at least a monitoring area on a side opposite to a side of an extended surface of the irradiated surface with respect to the emission section, and a control section for controlling intensity of light to be emitted from the emission section in accordance with a detection result of the detection section.

Description

technical field [0001] The present invention relates to a projector, in particular to the technology of the projector capable of realizing the proximity projection of projecting light from a position close to the irradiated surface. Background technique [0002] Most of the conventionally popular front projectors are installed at a position away from the screen to some extent in order to ensure a projection distance. When installing the projector away from the screen, it is necessary to ensure that there is no place such as an obstacle blocking light in the optical path from the projector to the screen. The limitation of the location of the projector is more obvious when the display screen is larger. In particular, it is difficult to display a large screen in a narrow room. [0003] In recent years, there has been proposed a technique of performing proximity projection using a front projection projector. Since proximity projection is possible, for example, a projector can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G01J1/00
CPCH04N9/3161G03B21/2053G03B21/28G03B21/2086G03B21/20G03B21/208
Inventor 米窪政敏
Owner SEIKO EPSON CORP