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ADD:No.242 Beihai Street, Dadong District, Shenyang City, Liaoning Province

TLL:024-88722463(Filter)

  024-88710226(Reflector) 

  024-88710538(International)          

FAX:024-88722312(Filter)

      024-88710655(Reflector)

EMAIL:info@hb-optical.com

Circular gradient neutral density filter

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Circular gradient neutral density filter

The circular gradient neutral density filter (referred to as the circular gradient density filter) can linearly attenuate the light intensity by rotating the filter, and can accurately adjust the light energy in the circular linear direction, while maintaining the neutral spectrum light energy distribution. Under the premise, the light energy can be adjusted and controlled. This type of filter can be used in natural light and laser fields. Using two filters in combination, reverse rotation can obtain a fixed density attenuation effect in a large limited area. Product sizes are available from 25mm to 100mm. Spectral range 250nm-2500nm. Density sheets with special size, density and wavelength can be customized.
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The circular gradient neutral density filter (referred to as the circular gradient density filter) can linearly attenuate the light intensity by rotating the filter, and can accurately adjust the light energy in the circular linear direction, while maintaining the neutral spectrum light energy distribution. Under the premise, the light energy can be adjusted and controlled. This type of filter can be used in natural light and laser fields. Using two filters in combination, reverse rotation can obtain a fixed density attenuation effect in a large limited area. Product sizes are available from 25mm to 100mm. Spectral range 250nm-2500nm. Density sheets with special size, density and wavelength can be customized.
 
 
 
 
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Detailed specifications:
 

Substrate

BK7, fused silica

Outer diameter

20mm-200mm

The inside diameter of

7.5mm、8.0mm、8.3mm

Outer diameter tolerance

+0/-0.15mm

Inner diameter tolerance

+0.15/-0mm

Thickness tolerance

±0.1mm

Parallelism

3’

Standard linearity

±5%

Standard deviation of the deepest point of optical density

±5%

Surface Quality

80-50

Coating area

0°-270°

Calibration wavelength

550nm

Design wavelength

380nm-2000nm (BK7)

250nm-2500nm (fused silica)

 

Standard product:
 

Part Number

Outer diameter

The inside diameter of

Optical density

Substrate

CVND10-B100A

100

7.5

1

BK7

CVND20-B100A

100

7.5

2

BK7

CVND30-B100A

100

7.5

3

BK7

CVND40-B100A

100

7.5

4

BK7

CVND10-B50B

50

8.0

1

BK7

CVND20-B50B

50

8.0

2

BK7

CVND30-B50B

50

8.0

3

BK7

CVND40-B50B

50

8.0

4

BK7

CVND10-B25C

25

8.3

1

BK7

CVND20-B25C

25

8.3

2

BK7

CVND30-B25C

25

8.3

3

BK7

CVND40-B25C

25

8.3

4

BK7

CVND10-B60C

60

8.3

1

BK7

CVND20-B60C

60

8.3

2

BK7

CVND30-B60C

60

8.3

3

BK7

CVND40-B60C

60

8.3

4

BK7

 

 

 

Mainly used in the field that needs to continuously attenuate the light intensity in a linear relationship (circular direction) in a wide spectral region.