BK7 window

BK7 Window

General specification

Material

H-K9L (Schott BK7)

Dimension  Tolerance

±0.1mm

Surface Accuracy

L/4@632.8nm

Surface Quality

40-20

Parallelism

<3 arc min

Clear Aperture

>90%

Bevelling

<0.2 *45

Coating

A: AR Coating 350nm-650nm

B: AR Coating 650nm-1050nm

C: AR Coating 1050nm-1580nm

Product No

Dia（mm）

Thickness(mm)

SQ

Flatness

Parallelism

CA

HC01

6.00

3.00

40-20

L/4

<3 arc min

>90%

HC02

12.70

3.00

40-20

L/4

<3 arc min

>90%

HC03

12.70

5.00

40-20

L/4

<3 arc min

>90%

HC04

15.00

3.00

40-20

L/4

<3 arc min

>90%

HC05

15.00

5.00

40-20

L/4

<3 arc min

>90%

HC06

20.00

3.00

40-20

L/4

<3 arc min

>90%

HC07

20.00

5.00

40-20

L/4

<3 arc min

>90%

HC08

25.40

3.00

40-20

L/4

<3 arc min

>90%

HC09

25.40

5.00

40-20

L/4

<3 arc min

>90%

HC10

30.00

5.00

40-20

L/4

<3 arc min

>90%

HC11

40.00

8.00

40-20

L/4

<3 arc min

>90%

HC12

50.80

8.00

40-20

L/4

<3 arc min

>90%

HC13

75.00

5.00

40-20

L/4

<3 arc min

>90%

HC14

75.00

10.00

40-20

L/4

<3 arc min

>90%

HC15

100.00

12.00

40-20

L/4

<3 arc min

>90%

Product No

Dia（mm）

Thickness(mm)

SQ

Flatness

Parallelism

CA

HC16

6.00

3.00

40-20

L/4

<3 arc min

>90%

HC17

12.70

3.00

40-20

L/4

<3 arc min

>90%

HC18

12.70

5.00

40-20

L/4

<3 arc min

>90%

HC19

15.00

3.00

40-20

L/4

<3 arc min

>90%

HC20

20.00

3.00

40-20

L/4

<3 arc min

>90%

HC21

20.00

5.00

40-20

L/4

<3 arc min

>90%

HC22

25.40

3.00

40-20

L/4

<3 arc min

>90%

HC23

25.40

5.00

40-20

L/4

<3 arc min

>90%

HC24

30.00

5.00

40-20

L/4

<3 arc min

>90%

HC25

40.00

8.00

40-20

L/4

<3 arc min

>90%