Units 11-12a Isle of Man Freeport, Ballasalla

BK7 SUBSTRATES

BK7 SUBSTRATES

Mirror specifications:

Diameter Tolerance: +0/-0.25mm Thickness Tolerance: +/-0.25mm, front surface: λ/10 flatness, 10-5 scratch-dig, rear surface: inspection polish, better than 5 arc min parallel,

Window specifications:

Diameter Tolerance: +0/-0.25mm Thickness Tolerance: +/-0.25mm, λ/10 transmitted wavefront distortion, both sides 10-5 scratch-dig, better than 10 arc sec parallel

Wedged Optics have a 30arc min (+/-5 arc min) wedge, thickness specified for thick side

BK7 MIRROR SUBSTRATES
DIAMETER (D)
THICKNESS (T)
BK7-FMR-12.7-6.35
12.7mm
6.35mm
BK7-FMR-25.4-6.35
25.4mm
6.35mm
BK7-FMR-38.1-9.52
38.1mm
9.52mm
BK7-FMR-50.8-9.52
50.8mm
9.52mm
BK7-FMR-76.2-12.7
76.2mm
12.7mm
BK7-FMR-101.6-12.7
101.6mm
12.7mm
BK7-FMR-152.4-25.4
152.4mm
25.4mm
BK7-WMR-25.4-6.35-30MIN
25.4mm
6.35mm
BK7-WMR-50.8-9.52-30MIN
50.8mm
9.52mm
BK7 WINDOW SUBSTRATES
DIAMETER (D)
THICKNESS (T)
BK7-FWD-12.7-6.35
12.7mm
6.35mm
BK7-FWD-25.4-6.35
25.4mm
6.35mm
BK7-FWD-38.1-9.52
38.1mm
9.52mm
BK7-FWD-50.8-9.52
50.8mm
9.52mm
BK7-FWD-76.2-12.7
76.2mm
12.7mm
BK7-FWD-101.6-12.7
101.6mm
12.7mm
BK7-FWD-152.4-25.4
152.4mm
25.4mm
BK7-WWD-25.4-6.35-30MIN
25.4mm
6.35mm
BK7-WWD-50.8-9.52-30MIN
50.8mm
9.52mm
Other sizes and specifications are available on request – please contact us.