Home>Products and Service >Windows >Windows BK7

Windows BK7 > Window BK7

Introduction

Used as transparent barriers for sending and receiving light between two phases under varying conditions in temperature pressure chemical composition cleanliness and phase. BK7 windows are used for visible and near IR. AR coated BK7 windows allowed more than 99％ transmittance comparing with 92％ of uncoated one.
 
 

Standard Specifications

  
 

Items

Specifications

Material

BK7 Grade A or equivalent Optical Glass

Designed Wavelength

546.1 nm

Designed Index

1.5183 ±0.0005

Dimension Tolerance

+0.0/-0.2 mm

Thickness Tolerance

± 0.2 mm

Clear Aperture

> 90%

Parallelism

< 1 arc minutes

Flatness

λ/4 at 632.8 nm

Surface Quality

scratch and dig 60-40

Bevel

0.5 (0/-0.3) mm

Notes:

1. Surface Quality could reach 40-20, 20-10

2. Parallelism such as 30” , 10”, 5” is available.

3. Please show us the size and the coating specification.

  
   
  ,, , ,

Part NO.

D(mm)

t(mm)

Coating

WND0101

12.7

3.0

uncoated

WND0102

12.7

5.0

uncoated

WND0103

15.0

2.0

uncoated

WND0104

15.0

3.0

uncoated

WND0105

20.0

2.0

uncoated

WND0106

20.0

3.0

uncoated

WND0107

25.0

2.0

uncoated

WND0108

25.0

3.0

uncoated

WND0109

25.4

3.0

uncoated

WND0110

25.4

5.0

uncoated

WND0111

30.0

2.0

uncoated

WND0112

30.0

3.0

uncoated

WND0113

40.0

4.0

uncoated

WND0114

50.0

5.0

uncoated

WND1101

12.7

3.0

T>99% @ 400-700 nm

WND1102

12.7

5.0

T>99% @ 400-700 nm

WND1103

15.0

2.0

T>99% @ 400-700 nm

WND1104

15.0

3.0

T>99% @ 400-700 nm

WND1105

20.0

2.0

T>99% @ 400-700 nm

WND1106

20.0

3.0

T>99% @ 400-700 nm

WND1107

25.0

2.0

T>99% @ 400-700 nm

WND1108

25.0

3.0

T>99% @ 400-700 nm

WND1109

25.4

3.0

T>99% @ 400-700 nm

WND1110

25.4

5.0

T>99% @ 400-700 nm

WND1111

30.0

2.0

T>99% @ 400-700 nm

WND1112

30.0

3.0

T>99% @ 400-700 nm

WND1113

40.0

4.0

T>99% @ 400-700 nm

WND1114

50.0

5.0

T>99% @ 400-700 nm

 

 

  
Catalogue Download

Window

Window
 

GO to Top