Optical Flats – 世極企業有限公司

Acting KEMET brand

Optical Flats

Optical flats are used to check the flatness of a substrate.
When a high quality optical flat is placed on top of a polished substrate and used with a monochromatic light source, light bands are formed.
The number of rings or straight lines shown is an indication of how flat the part is.
Produced from Quartz, Kemet Optical Flats are available in single and double sided, 1/4 light band accuracy (Higher accuracy available on request), in sizes from 25mm up to 600mm diameter.
Larger sizes made to order with configurations such as square optical flats, rectangle optical flats, donut optical flats and custom optical flat thickness are available.
They are supplied with Certificate of Conformity with full traceability to international standards.
Special optical flats are available on request.

Diameter	1/4 light band optical flats (Lambda/8)		1/10 light band optical flats (Lambda/20)
Diameter	Single sided	Double sided	Single sided	Double sided
25mm	361220	361237	361221	361238
50mm	361222	361215	361223	361239
75mm	361224	361705	361225	361240
100mm	361226	361210	361227	361241
125mm	361228	361242	361229	361214
150mm	361123	361216	361231	361243
200mm	361232	361219	361233	361244
250mm	361234	361217	361235	361245
300mm	361218	361246	361236	361247