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Table-Mounted Slide Enlarger to Inspect Printed Circuit Card Assemblies For Missing Components

IP.com Disclosure Number: IPCOM000102566D
Original Publication Date: 1990-Dec-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Sprinkle, JW: AUTHOR

Abstract

Disclosed is a device to inspect printed circuit cards for missing components.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Table-Mounted Slide Enlarger to Inspect Printed Circuit Card Assemblies For Missing Components

       Disclosed is a device to inspect printed circuit cards
for missing components.

      The essential elements of this device consist of items that are
available on the market today.  The elements are a slide projector
with a rotary slide tray, a mounting bracket with an adjustable
table, and an adjustable overhead projector head.

      By marrying all of these separate items together, a
high-intensity light source is created that can be used in a normal
room lighting to inspect card assemblies.  The projection systems now
in the market place will do the same thing, but they have to be used
in subdued lighting.

      Using the slide projector, with a proper lens, a slide image is
projected into the overhead projection head.  This magnifies the
image, which is then projected onto the printed circuit card
illuminating the areas where components should be.  Adjusting the
slide projector table up or down will enlarge the image to give a
one-to-one image of the card assembly.  Adjusting the overhead
projection head in or out will bring the projected image into proper
focus.  The slide projector lens can also be adjusted to give the
image better clarity.

      This is a simple and easy device to inspect card assemblies for
missing components, with all of the inspection tools contained in one
or two rotary slide trays.