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Location: Main > Optical Filters > Neutral Density Filters
 
Absorptive ND GlassFilters
P/N:NDF- Series
Introduction:Key Features
5 Sizes Available: Dia12.5,Dia20mm,Dia25mm,Dia50mm,50x50mm.
Optical Densities Ranging from 0.04 to 5.0
Ideal for Low-Power Applications
Absorptive Glass Reduces Multiple Reflections
Edge Blackening Available Upon Request
Our absorptive neutral density (ND) filters are available with optical densities (OD) ranging from 0.04 to 5.0. Unlike their reflective, metallic counterparts, each filter is fabricated from a Schott glass substrate that has been selected for its spectrally flat absorption coefficient in the visible region of 400 - 650 nm. By varying the type and thickness of the glass used, we are able to produce the entire line of absorptive ND filters. Because of variations between different lots of glass, Photonik recommends that the user calibrate the filter in their setup before taking quantitative measurements.
P/N Keywords Unit Price Available Generate Quotation
NDF-S50.0-A2.0-U 50.0x50.0mm,OD2.0,Absorptive,400-650nm,Uncoated S$100.00/pc In stock Add to Request List
NDF-S50.0-A3.0-U 50.0x50.0mm,OD3.0,Absorptive,400-650nm,Uncoated S$100.00/pc In stock Add to Request List
NDF-S50.0-A4.0-U 50.0x50.0mm,OD4.0,Absorptive,400-650nm,Uncoated S$100.00/pc In stock Add to Request List
NDF-S50.0-A5.0-U 50.0x50.0mm,OD5.0,Absorptive,400-650nm,Uncoated S$100.00/pc In stock Add to Request List
 
Name: DIA25.4mm Absorptive Neutral Density Filter Kit
P/N: NDF-AK-R10
Keywords:Dia 25.4mm,OD from 0.04 to 5.0,14pcs/kit
Unit Price: S$580.00/set
Store: In stock
Request: Add to Request List
Introduction:Diameter 25.4mm ND Filters, T from 0.001% to 92%, Total 14 types
Un-mounted 25mm filter plate compatible to any other 1-inch optics mount
Ring mountable to 6-position ND filter wheel
Ring mounted to 1-inch filter mount
Multiple one-by-one mounted filters in series for high OD wanted
e.g. OD0.5 + OD2.0 = OD 2.5
View Detailed Information
Name: 50x50mm Absorptive Neutral Density Filter Kit
P/N: NDF-AK-S20
Keywords:50.0x50.0mm,OD from 0.04 to 5.0,14pcs/kit
Unit Price: S$650.00/set
Store: In stock
Request: Add to Request List
Introduction:50.0x50.0mm Absorptive ND Filters, T from 0.001% to 92%, Total 14 types

In photography and optics, a neutral density filter or ND filter is a "grey" filter. An ideal neutral density filter reduces light of all wavelengths or colors equally. The purpose of standard photographic neutral density filters is to allow the photographer greater flexibility to change the aperture or exposure time, allowing for more control, particularly in extreme circumstances.
View Detailed Information
 
Linearly Variable ND Filters
P/N:LVNDF- Series
Introduction:Linearly variable neutral density filter is used to attenuate power density linearly in one direction. The light sources can be white light as well as with laser beam. The substrates used can be standard optical glass BK7 (380-2000nm) or UV fused silica (200-2500nm).
P/N Keywords Unit Price Available Generate Quotation
LVNDF-BK7-2.0-07620254-0160 76.2x25.4xT1.6mm,BK7,OD2.0 max,380-2000nm S$280.00/pc In stock Add to Request List
LVNDF-BK7-3.0-07620254-0100 76.2x25.4xT1.0mm,BK7,OD3.0 max,380-2000nm S$300.00/pc In stock Add to Request List
LVNDF-BK7-3.0-07620254-0160 76.2x25.4xT1.6mm,BK7,OD3.0 max,380-2000nm S$300.00/pc In stock Add to Request List
LVNDF-UVFS-2.0-07620254-0160 76.2x25.4xT1.6mm,UVFS,OD2.0 max,200-2500nm S$320.00/pc In stock Add to Request List
LVNDF-UVFS-3.0-07620254-0160 76.2x25.4xT1.6mm,UVFS,OD3.0 max,200-2500nm S$350.00/pc In stock Add to Request List
 
 
Radially Variable ND Filters(OD 0@Center)
P/N:RVNDF-B Series
Introduction:Radially variable neutral density filters designed to attenuate light in terms of Gaussian distribution, can be used with white light as well as with laser beams.Substrates used have BK7 glass(350-2000nm) and UV fused silica(200-2500nm).
P/N Keywords Unit Price Available Generate Quotation
RVNDF-B-1.0-UVFS-R0250-0160 Dia25.0xT1.6mm,UVFS,OD1.0,OD:0.04@center S$595.00/pc In stock Add to Request List
 
 
Metallized Reflective ND Filter (Broadband)
P/N:NDF-BB Series
Introduction:Metallized Reflective ND Filter is made by UV fused silica, with very thin aluminum coating on single surface. The filter allows broadband light 200-2000nm to pass as specified ratio, others will be reflected. Typical ratios are 50% and 70%.
P/N Keywords Unit Price Available Generate Quotation
NDF-BB-T50-R-025010 Dia25.4xT1.0mm,UVFS,T50% @ 200-2000nm S$250.00/pc In stock Add to Request List
NDF-BB-T50-R-050010 Dia50.0xT1.0mm,UVFS,T50% @ 200-2000nm S$450.00/pc In stock Add to Request List
NDF-BB-T70-R-025010 Dia25.4xT1.0mm,UVFS,T70% @ 200-2000nm S$250.00/pc In stock Add to Request List
NDF-BB-T70-R-050010 Dia50.0xT1.0mm,UVFS,T70% @ 200-2000nm S$450.00/pc In stock Add to Request List
 
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