Browse Prior Art Database

Coherent Fiber Optic Nine Light Pipe Microscope

IP.com Disclosure Number: IPCOM000078505D
Original Publication Date: 1973-Jan-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Dobias, WF: AUTHOR

Abstract

Conventional apparatus for testing alignment of a cathode-ray tube (CRT) display using characteristics such as vertical height, horizontal width, barreling, pin-cushioning, tilt and squareness utilizes an overlay mask placed on the display CRT face plate, and adjusting the display image to fall within specified limits. However, there is no reference in the conventional overlay mask, such that the display array alignment is subjective and not adapted for use on a production line due to excessive time and cost.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 2

Coherent Fiber Optic Nine Light Pipe Microscope

Conventional apparatus for testing alignment of a cathode-ray tube (CRT) display using characteristics such as vertical height, horizontal width, barreling, pin-cushioning, tilt and squareness utilizes an overlay mask placed on the display CRT face plate, and adjusting the display image to fall within specified limits. However, there is no reference in the conventional overlay mask, such that the display array alignment is subjective and not adapted for use on a production line due to excessive time and cost.

A nine-light pipe microscope system provides fixed reference points to adjust the display array, and also functions in a real-time system for production applications. The nine-light pipe microscope has two or more objective lens assemblies, an eyepiece lens 3 and a focusable objective lens 5. A 3 x 3 matrix of fiber bundles is terminated on the surface 7 of a display ferrule 9 which has nine corresponding inputs 11, each fiber having an associated object ferrule 13 for terminating the object end 15 of the fiber bundle, an objective lens 5, a clear filter 17 and the object 19. The objective lens 5 focuses the image of the object 19 on the object end 15 of the coherent fiber-optic bundle 11, which transmits the focused image to the opposite object end 7 of the coherent fiber-optic bundle. The eyepiece lens 3 is focused on the output end 7 of the coherent fiber-optic bundle, and the reference reticle 21 is also in the focus of the eyepiece lens 3 and appears superimposed on the image.

At the ocular end of the ferrule 9, nine fiber-optic bundles 11 are combined into a 3 x 3 matrix of fiber bundles while maintaining coherency between individual bundles. The nine fiber-optic bundles, with their associated objectives attached, are free to move w...