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Projection device for identifying pattern utilizing non-visible light

A visible light and projector technology, applied in the field of optical systems, can solve problems such as inconvenient use

Inactive Publication Date: 2010-12-15
BENQ CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, when the projector 10 is used to project the picture onto the screen 20, in some cases, it is necessary to read the information on the picture, for example, the barcode 30 in the picture needs to be scanned, and an additional installation on the outside of the projector 10 is required. Infrared emission source 40 and infrared sensor 50 are very inconvenient to use

Method used

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  • Projection device for identifying pattern utilizing non-visible light
  • Projection device for identifying pattern utilizing non-visible light
  • Projection device for identifying pattern utilizing non-visible light

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0046] Such as figure 2 As shown, the projector 100 of the first embodiment of the present invention includes a light source 110, a condenser lens 120, a first prism 130, a micromirror light valve element (Digital Micromirror Device, DMD) 140, a second prism 150, a projection mirror 160 and an infrared sensor (electromagnetic wave sensor, invisible light sensor) 170 . The second prism 150 has a first surface 151 on which a coating 152 is formed.

[0047] The light from the light source 110, including visible light and invisible infrared light, is collected by the condenser lens 120, and then enters the first prism 130. After being reflected by the interface 131, it enters the micro-mirror light valve element 140, and the DMD light valve The element 140 modulates the light according to the externally input image signal to become a projected screen image. After being reflected by the micro-mirror light valve element 140, it passes through the first prism 130, and then passes t...

no. 2 example

[0055] As shown in FIG. 3 , the projector 200 according to the second embodiment of the present invention includes a light source 210 , a prism 230 , a micromirror device 240 , a mirror 250 , a projection mirror 260 and an infrared sensor 270 . The mirror 250 has a second surface 251 on which a coating 252 is formed.

[0056] The light from the light source 210 enters the prism 230, is reflected by the prism 230, enters the micro-mirror element 240, and then is reflected by the micro-mirror element 240, passes through the prism 230, and is incident on the second surface 251 of the mirror 250 , is reflected by the coating film 252 on the second surface 251 , passes through the projection mirror 260 and is projected onto the screen 20 .

[0057] If the user selectively places a barcode 30 of a preset size on the preset lower right corner area of ​​the screen 20 , the light irradiates on the barcode 30 and is reflected to generate an infrared image of the barcode 30 . The light ...

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PUM

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Abstract

The invention discloses an optical system, including source, the first optical components, projection mirror, and electromagnetic sensors. One from the light source, optical components through the first, and then through the mirror projection after the incident to the screen, and the incident light from the screen to screen reflection, a projection microscope, then returned to the first optical components, and by the first optical element to the incident electromagnetic wave sensor. The electromagnetic sensors for infrared sensors, and use of light can be issued at the same time the characteristics of infrared and visible light, to detect when the graphics on the screen, and can be used directly to the optical system itself, the need for additional installation of infrared emission sources and infrared sensors.

Description

technical field [0001] The invention relates to an optical system, in particular to an optical system with a built-in electromagnetic wave sensor. Background technique [0002] Such as figure 1 As shown, when the projector 10 is used to project the picture onto the screen 20, in some cases, it is necessary to read the information on the picture, for example, the barcode 30 in the picture needs to be scanned, and an additional installation on the outside of the projector 10 is required. The infrared emission source 40 and the infrared sensor 50 are inconvenient to use. Contents of the invention [0003] In view of this, the object of the present invention is to provide an optical system with a built-in infrared sensor, which can be applied to a projector, and utilizes the characteristics that the bulb of the projector emits visible light and infrared rays at the same time, so that the information on the screen needs to be read When, can directly use the projector itself t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/00G02B5/04G02B5/08G02B1/10
Inventor 周智章陈荣耀
Owner BENQ CORP
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