Neutral Density Filters

KUPO Optics provides Neutral Density Filters (ND Filters) that are able to evenly reduce the transmission in visible wavelength region. ND filter only reduces the intensity of visible light without changing the color scheme. The vividness of the imaging will not be affected.
 
KUPO Dichroic/ Neutral Density Filters

Features

● Perfect piece-to-piece, batch-to-batch consistency
● Evenly reducing the intensity of visible light

Examples of Applications

● Photography
● Photomicrography
● Machine Vision

Borosilicate Glass (D263T)

● Thickness: 0.21mm, 0.3mm, 0.55mm
● Heat Resistance: Up to 450℃

General Specification

● Spectral Tolerance: 400~700nm Tavg +/- 3%
● Available Substrate: See Glass Substrates under Products Page
● Humidity, Adhesion, and Abrasion: MIL-M-13508C

NDF-001

KUPO Dichroic/ Neutral Density Filters / NDF-001
Reference color #LEE 209
400~700nm Tavg = 40% +/- 3%
 
KUPO Dichroic/ Neutral Density Filters / NDF-001
 

NDF-002

KUPO Dichroic/ Neutral Density Filters / NDF-002
Reference color #LEE 210
400~700nm Tavg = 20% +/- 3%
 
KUPO Dichroic/ Neutral Density Filters / NDF-002
 

NDF-003

KUPO Dichroic/ Neutral Density Filters / NDF-003
Reference color #LEE 211
400~700nm Tavg = 6.5% +/- 1.5%
 
KUPO Dichroic/ Neutral Density Filters / NDF-003
 

NDF-004

KUPO Dichroic/ Neutral Density Filters / NDF-004
Reference color #LEE 299
400~700nm Tavg = 2.5% +/- 1%
 
KUPO Dichroic/ Neutral Density Filters / NDF-004