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BK7 Window | Fused Window | Sapphire Window | CaF2 Window | Silicon Window | Borofloat Window | Borosilicate(Pyrex) Window |
BK7 Windows
| Attribute |
Specification |
| Typical Diameter (¦µmm) |
10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 38.1, 50.8 |
| Typical Thickness (mm) |
2.0, 3.0, 6.0, 6.35 |
| Diameter Tolerance (mm) |
+0.0/-0.2 (General), +0.0/-0.02 (High Precision) |
| Thickness Tolerance (mm) |
¡À0.2 (General), ¡À0.005 (High Precision) |
| Clear Aperture |
>80% (Small Size), >95% (Large Size) |
| Parallelism |
3 min. (General), 3 sec. (High Precision) |
| Surface Quality |
60/40 (General), 10/5 (High Precision) |
| Flatness (per 25mm@633nm) |
¦Ë /2(General), ¦Ë/10 (High Precision) |
| Bevel (face width x 45) |
<0.25mm |
| Coating |
Uncoated, AR, HR, PR, Coating, etc. |
Note for BK7 Window:
(1). Please visit our web for price list of standard size BK7 windows.
(2). Custom-made BK7 windows at any size from ¦µ2.0mm to ¦µ350mm clear aperture are available.
Besides round, Bk7windows at shape of quadrate, triangular, or other polygonal are available.
(3). Thickness from 1.0mm to 50.0 mm is available upon request.
(4). 100% clear aperture is available upon request.
(5). Better bevel is available upon request.
(6). BK7 Windows with Anti-Reflective(AR), High-Reflective(HR), Partial-Reflective(PR) coating are available.
Diameter Tolerance: ------------------ +0.0, -0.1mm
Thickness Tolerance: ----------------- ¡À0.2mm
Clear Aperture: ------------------------- >80%
Parallelism: -------------------------------- 1'(Standard), 10"(High Precision)
Surface Quality: ------------------------- 60/40(Standard), 10/5(High
Precision)
Wavefront Distortion: ----------------- l (Standard),
l /10(High Precision) per 25mm @633mm
Bevel: -------------------------------------- <0.25mm x 45¡ã
Coating: -------------------------------- -- 1 /4 wave MgF2@550nm
| Standard |
F( mm) |
T(mm) |
Uncoated |
Coated |
Part No. |
Price |
Part No. |
Price |
10.0 |
3 |
WIN1101 |
$6.0 |
WIN1111 |
$9.0 |
12.7 |
3 |
WIN1102 |
$6.0 |
WIN1112 |
$9.0 |
15.0 |
3 |
WIN1103 |
$6.0 |
WIN1113 |
$12.0 |
25.4 |
3 |
WIN1104 |
$6.5 |
WIN1114 |
$15.0 |
| High precision |
F( mm) |
T(mm) |
Uncoated |
Coated |
Part No. |
Price |
Part No. |
Price |
10.0 |
6 |
WIN1201 |
$12.0 |
WIN1211 |
$15.0 |
12.7 |
6 |
WIN1202 |
$12.0 |
WIN1212 |
$15.0 |
15.0 |
6 |
WIN1203 |
$15.0 |
WIN1213 |
$18.0 |
25.4 |
6.35 |
WIN1204 |
$16.0 |
WIN1214 |
$19.0 |
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