Material

BK7 glass or UV grade fused silica

Dimension Tolerances

±0.1mm

Clear Aperture

>80% Dimension

Surface Quality

S/D=60/40 or 20/10

Surface Flatness

λ/8 or λ/4 @633nm

Chamfer

0.3±0.1mm

Coating

Optional

Part No.

A=B(mm)

C(mm)

Surface Quality

Flatness

Angle Tolerance

PRA1110

10.0

10.0

60-40

λ/2

< 3 arc mins

PRA1112

12.7

12.7

60-40

λ/2

< 3 arc mins

PRA1115

15.0

15.0

60-40

λ/2

< 3 arc mins

PRA1120

20.0

20.0

60-40

λ/2

< 3 arc mins

PRA1125

25.4

25.4

60-40

λ/2

< 3 arc mins

PRA1150

50.8

50.8

60-40

λ/2

< 3 arc mins

PRA1203

3.2

3.2

20-10

λ/8

< 30 arc secs

PRA1205

5.0

5.0

20-10

λ/8

< 30 arc secs

PRA1210

10.0

10.0

20-10

λ/8

< 30 arc secs

PRA1212

12.7

12.7

20-10

λ/8

< 30 arc secs

PRA1220

20.0

20.0

20-10

λ/8

< 30 arc secs

PRA1225

25.4

25.4

20-10

λ/8

< 30 arc secs

PRA1250

50.8

50.8

20-10

λ/8

< 30 arc secs