Unlock instant, AI-driven research and patent intelligence for your innovation.

Compact acoustic-optical modulator

A technology of acousto-optic modulators and lasers, which is applied in optics, instruments, nonlinear optics, etc., and can solve problems such as high assembly costs and troublesome adjustments

Inactive Publication Date: 2009-11-18
MICROVISION
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, adjusting the position of the known AOM relative to the laser beam is cumbersome, requiring an optical bench of considerable size with multiple degrees of freedom of motion
Known matching networks also use manually tunable components which contribute to high assembly costs

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
  • Compact acoustic-optical modulator
  • Compact acoustic-optical modulator
  • Compact acoustic-optical modulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 The reference numeral 10 in generally represents a hand-held instrument, such as a personal digital assistant, in which is installed such as figure 2 A light and compact image projection device 20 is shown in , which is used to project two-dimensional color images at variable distances from the instrument. For example, image 18 is located within a working distance range relative to instrument 10 .

[0033] Such as figure 1 As shown in , the image 18 extends over an optical horizontal scan angle A extending along the horizontal direction of the image, and over an optical vertical scan angle B extending along the vertical direction of the image. As described below, the image comprises illuminated and non-illuminated pixels on a raster pattern of scan lines scanned by a scanner in the device 20 .

[0034] The parallelepiped shape of the instrument 10 represents only one form factor in which the housing of the device 20 can be implemented. The instrument may 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

A light and compact image projection module designed specifically for mounting in a housing with a light-transmissive window for enabling illumination of selected pixels in a raster pattern to produce a colorful VGA-quality high-resolution image. A compact acousto-optic modulator is used to modulate the green laser beam used to generate the image.

Description

technical field [0001] The present invention relates generally to an acousto-optic modulator (AOM), a method of manufacturing the AOM, and an apparatus and method for adjusting the power of a laser beam using the AOM, particularly for use in color image projection systems for use in Project 2D color images while maintaining low power consumption, high resolution, small compact size, silent operation, and minimal vibration. Background technique [0002] It is generally known to project a two-dimensional image on a screen based on a pair of scanning mirrors oscillating in mutually orthogonal directions to scan a laser beam in a raster pattern. However, known image projection systems project images with limited resolution, typically less than a quarter of the quality of a Video Graphics Array (VGA) of 640x480 pixels, and not full color. [0003] In order to obtain a full-color image, red, blue and green lasers need to be pulsed at a frequency of about 100 MHz. Currently avail...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/11
CPCH04N9/3129G02F1/113
Inventor 卡尔·维坦博格辛正
Owner MICROVISION