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BK7 Window

 

BK7 Window are of high precision diemsion control, minimal transmitted beam deviation, high surface quality.With those excellent features, the BK7 window is widely use in projection optics systems, imaging and optical measurement system.

For your wide range of applications, TEMTO can supply varieties of single layer or multiplayer anti-reflecting coating on optical windows. Please refer to Coatings chapter for more information.

 

High Precision BK7 Window

Specifications:
Material BK7 grade A optical glass or Chinese H-K9L
Diameter Tolerance +0.00/-0.05mm
Thickness Tolerance
0.1mm
Clear Aperture >Central 85% of diameter
Surface Quality 20-10 S/D

Parallelism

Refer to the table

Wavefront Distortion

/10 per 25mm @632.8nm

Protective Bevel <0.25mm x 45

Coating

Uncoated


1 min Parallelism

10 sec Parallelism

(mm)
T(mm)
Part No.
Part No.

WIN0401

WIN0201

10.0

6.0

WIN0402

WIN0202

12.7

6.0

WIN0403

WIN0203

25.0

6.0

WIN0404

WIN0204

25.4

6.0

WIN0405

WIN0205

30.0

6.0

WIN0406

WIN0206

50.0

10.0


Standard BK7 Window

Specifications:
Material BK7 grade A optical glass or Chinese H-K9L
Diameter Tolerance +0.0/-0.1mm
Thickness Tolerance
0.1mm
Clear Aperture >Central 85% of diameter
Surface Quality 60-40 S/D

Parallelism

< 1 arc minute

Wavefront Distortion

/4 per 25mm @632.8nm

Protective Bevel <0.25mm x 45

Coating

Uncoated


Part No.

(mm)
T(mm)

WIN0101

10.0

3.0

WIN0102

12.7

3.0

WIN0103

15.0

3.0

WIN0104

25.0

3.0

WIN0105

25.4

3.0

WIN0106

30.0

3.0

WIN0107

50.0

3.0

WIN0108

50.8

3.0

Note: Other sizes and coatings are available upon request. Ultra Precision BK7 Window with /20 @632.8nm  and Optical Flat are also available upon request.

The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 1-600mm. The manufacturing limits are not absolute; tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.

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