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Optical Flats
  Optical flats are polished plano parallel surfaces usually as discs or squares. The terminology optical flats include general optically polished spectroscopic windows and precision test piece flats with flatness usually up to lamba 20 for test plate measurement of other surfaces and astronomical mirrors.
Spectroscopic optical flats are made in a range of materials including fused silica, UV glasses, BK7 and a range of technical sheet glass materials.
Spectroscopic optical flats are widely used in high volume quantities for CRTS, lamp manufacture, scientific instruments and research.
Optical Flats Specifications

Surface Quality

60-40

Wedge

<5.0'

Tolerance on CT

+/- 0.04"

Tolerance on Diameter

+/- 0.01
Single-sided Optical Flats - 1/10l

Item Code

Diameter

Center Thickness

Material

Flatness

OFF-10

1.0"

0.5"

Fused Silica

1/10l

OFZ-10

1.0"

0.5"

Zerodur

1/10l

OFF-20

2.0"

0.5"

Fused Silica

1/10l

OFZ-20

2.0"

0.5"

Zerodur

1/10l

OFF-40

4.0"

0.75"

Fused Silica

1/10l

OFZ-40

4.0"

0.75"

Zerodur

1/10l

OFF-60

6.0"

1.0"

Fused Silica

1/10l

OFZ-60

6.0"

1.0"

Zerodur

1/10l
Single-sided Optical Flats - 1/4l

Part No.

Diameter

Center Thickness

Material

Flatness

OFF -14

1.0"

0.5"

Fused Silica

1/4l

OFZ -14

1.0"

0.5"

Zerodur

1/4l

OFF -24

2.0"

0.5"

Fused Silica

1/4l

OFZ -24

2.0"

0.5"

Zerodur

1/4l

OFF -44

4.0"

0.75"

Fused Silica

1/4l

OFZ -44

4.0"

0.75"

Zerodur

1/4l

OFF -64

6.0"

1.0"

Fused Silica

1/4l

OFZ -64

6.0"

1.0"

Zerodur

1/4l
Optional aluminum coating increases contrast
Note: Other sizes and coatings are available upon request.
 
Telephone : 0086 -10-62634557 Fax : 0086 -10-65494891 sales@laseroptex.com  
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