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A limit sample for comparative inspection in the visual inspection of optical glass product.
“Surface quality comparison plate” facilitates the visual inspection.

◦Width can be recognized under microscope
The width can be easily identified by the small letters written right beside the scratch which can be observed even in the field of view of a microscope. It allows speedy inspections without errors.
◦Accurate width
The line width is extremely precise, produced by a drawing machine for semiconductors
◦No need to select a light source
Can be used under various light sources such as fluorescent lamps, light bulbs, and condensers.

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Technical Data
Documents/Downloads
Guide

▶Inspection of Scratch and Dig
It often relies on the inspector’s sense of judgment of the “appearance of scratches and digs” against a comparison plate. And the quality of the product is affected by this. (outflow of defective product or excessive-quality)
This “surface quality comparison plate” is manufactured to judge based on objective dimensions instead of the inspection based on the senses. The dimensions of the width of scratch and the diameter of dig for comparison are all indicated in absolute value in μm units. It enables more direct and accurate comparison and judgment than conventional products.

Attention

▶The dimensions of the width of scratch and the diameter of dig for comparison are all indicated in absolute value in μm units.

Outline Drawing
■A15700B

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规格
■Scratch

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■Dig

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Example of Use
■Visual inspection under 100W light bulb

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■Inspection with microscope

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Part Number

Catalog PDF

dxf

STP

IGS

SAT

A15700B

Part Number
Products Name Material Outer Dimensions of Plate Body Weight
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    JP Yen Stock Qty
A15700BNEW

Surface Quality Comparison Plate

Synthetic Quarts Glass

90 × 65 × 1.5mm

0.091㎏

RoHS  

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