Neutral density filter

Neutral density filter

EF provide two kinds of variable attenuators for different application, The circular variable attenuator can make the optical density linearly varies around a 0°-270° circle for measuring laser energe farthest. As for the square one, the optical density linearly varies across the length for measuring laser energe.

Circular variable attenuator

 

Applications:

●Detector of photon

●Electronic image

●Optical instrumentation

Specifications
Material BK7 grade A optical glass, Fused silica
Optical Density Range OD0-OD3
Outside Diameter Φ54mm ±0.25

Dimension

 54*42*67 mm
Linearity of Density ±5%@632.8 nm
Coating S1: Ni-Cr-Fe; S2: Boardband AR coating; incidence angle: 0°-15°
Clear aperture >80% diameter
Damage threshold 30W/cm2 CW
Active wavelength 400-1100 nm

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

Square variable attenuator

Applications:

●Detector of photon

●Electronic image

●Optical instrumentation

Specifications
Material BK7 grade A optical glass, Fused silica
Optical Density Range OD0-OD2
Linearity Density OD±5%

Dimension

 76.2*25.4*2.0 mm
Coating S1: Ni-Cr-Fe; S2: Boardband AR coating; incidence angle: 0°-15°
Clear aperture >80% diameter
Damage threshold 30W/cm2 CW
Active wavelength 400-1100 nm

Note: Dimension, wavelength range, OD or other request are available upon request.
Keep in touch with us

Contact us sales@eforcelaser.com.au