λ/10–λ/20 · fused silica

Precision Optical Flat — Fused Silica

For demanding work, Tower's fused silica flats are available at λ/10 or λ/20, single or double sided, 25 to 200 mm. Fused silica's low expansion coefficient makes these the choice for metrology and temperature-sensitive reference surfaces. Precision ground and polished.

Specifications

Material

Fused silica

Flatness

λ/10 or λ/20

Surface quality

20/10

Parallelism

< 1 arc min

Diameter

25–200 mm

Single / double sided

Both