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Tel:     +86-431-87034313

Fax:    +86-431-87033597

Email: cnioptical@cnilaser.com

Circular Variable Attenuator

·  Linear Optical Density Gradient of 0-1, 0-2.0 and 0-4.0

·  UV Fused Silica Substrate for Broad Wavelength Use

·  Antireflection Coating on Second Surface to Reduce Back Reflection

 

Product Description

Circular Variable Neutral Density Filter is designed to attenuate the wide spectrum of low energy laser light from UV to near IR wavelength. The optical density gradient varies from 0–1.0, 0-1.5, 0-2.0 and 0-3.0 around a by simply rotating the filter from 0 to 360 degrees. The circular variable attenuator operates in visible and NIR light. A new and reliable film of NiCrFe has been designed to achieve broadband attenuation. The second surface of this filter is coated with a broadband visible antireflection coating to minimize the reflective loss from the second surface.


 Standard Product

Part No.

 

Relative Density Range

Weight(g)

 

 

0.0~1.0

63

 

 

0.0~1.5

63

 

 

0.0~2.0

63

 

 

0.0~3.0

63


Specification

 

Neutral Density Filters get a nearly flat transmittance from UV to NIR.

Material:BK7grade A optical glass, Fused silica

linearity Density  OD±5%

Working Wavelength :UV,VIS,NIR

Surface Quality: I-V

Clear aperture:>90% diameter

Damage threshold: 30W/cm2 CW

Accuracy of Recorded Density:+/- 2% of full scale

Linearity of Relative Density Wedge Profile: +/-7% of nominal value

Dimensions: +/-0.1

Coated Sector Angular Width: 300o

Parallelism: 30 “

Surface Quality: 40-20 scratch-dig

Coating: Side 1:NiCrFe attenuation + multi-layer AR film.

Side 2: Multilayer AR film

Application: Detector of photon, electronic image etc.

Dimension, wavelength range ,OD or other request are available upon request.

 

 
 
Addr: No.888 Jinhu Road High-tech Zone,Changchun 130103, P.R.China
Email: cnioptical@cnilaser.com   International Tel: +86-431-87034313   Fax:+86-431-87033597   
 
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