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Laser image projector

A projector and image technology, applied in the field of image projectors, can solve the problems of the weight and size of the projection optical system.

Inactive Publication Date: 2005-02-02
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But these systems suffer from the weight and size of the projection optics and are limited to imaging onto a single screen

Method used

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  • Laser image projector
  • Laser image projector
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Embodiment Construction

[0019] refer to figure 1 The individually addressable laser pixels 11 comprise organic lasers 12 optically pumped by light from an OLED 14 formed on a substrate and electrically controlled by circuitry 16 . In a passive matrix projector, the circuit 16 includes only electrical conductors. In an active matrix projector, the circuit 16 contains active electronic components such as transistors and capacitors.

[0020] The OLED 14 emits incoherent light 15 to optically pump an organic laser 12 which emits laser light 13 perpendicular to the substrate and which propagates to expose an element such as a light scattering projection screen 18 on which the emitted The light is scattered to become visible to a viewer (not shown). The light diffusing projection screen 18 can be either transmissive or reflective, so that it can be viewed either from the rear or from the front.

[0021] refer to figure 2 , the laser projector 8 comprises an array of individually addressable laser pixe...

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Abstract

A laser image projector includes a substrate; and a two dimensional array of individually addressable laser pixels formed on the substrate for emitting an imagewise beam of laser light perpendicular to the substrate, each of the laser pixels including an addressable organic light emitting diode (OLED) and an organic vertical cavity laser that is arranged to be pumped by the OLED.

Description

technical field [0001] The invention relates to the field of image projectors. Background technique [0002] Image projection devices are well known and have been used for many years. Such systems typically rely on image modulators and optical projection devices to project the image onto a diffuse screen for viewing by an audience. Image modulators were originally based on hard copy media such as slides and films such as film. More recently, there have been softcopy projectors, based on eg microelectromechanical systems or liquid crystal display devices, as well as laser projection systems, see for example US patent application 2003 / 0039036 Al published February 27, 2003 to Kryschwitz et al. In any case, the image modulator establishes an image plane that is projected through an optical system onto a screen, such as is typically seen in a movie theater or digital computer monitor projector. Image projection devices are also used for installation in head-mounted displays. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/02G09G3/20G09G3/32H01L51/50H01S3/08H01S3/091H01S3/0915H01S3/17H04N9/31
CPCH04N9/3129
Inventor R·S·科克J·P·斯庞霍维J·A·马尼科E·科文农D·L·帕顿
Owner EASTMAN KODAK CO