Singapore Optics shop retail laser optics & fiber optical components covering the entire spectrum from UV to FIR.
 
 

       HomeProductsNewsLinksContact
  Products Fast Search
  
Optical Substrates
Optical Crystals Ceramics
Optical Windows Shadow Masks
Optical Lenses
Optical Mirrors
Optical Prisms
Optical Filters
Laser Line Filters
Bandpass Filters
Edgepass Filters
Color Glass Filters
Neutral Density Filters
Hot Cold Mirrors
Notch Filters
Optical Beamsplitters
Optical Waveplates
Optical Polarizers
Optical Etalons
Quartz Glasswares Alumina Tube
Optomechanics
Fiber Passive Components
Fiber Optical Attenuators
Fiber Amplifiers
Fiber Frequency Shifter
Fiber Optics Tooling Packaging
Lasers Systems Accessories
Light Sources
Imaging Components
Photodetectors
Photomask Reticle
Optical Power Meters
Optical Modulators Drivers
Instrument Accessories
Optical Grating
Hotline:    +65-6316-6370
                  +65-6316-2142
Email:      sales@optics.sg
photonik@singnet.com.sg

Location of SG Optics Shop
Search on Google Maps

Location: Main > Optical Filters > Neutral Density Filters > NDF-R25.0-A3.0-DARVIS
Name: DIA25.0mm Absorptive ND Filter-OD3.0(AR@350-700nm)
P/N: NDF-R25.0-A3.0-DARVIS
Keywords:Dia25.0mm,OD3.0,Absorptive,DAR@350-700nm coated
Unit Price: S$75.00/pc
Available: In stock
Request: Add to Request List
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.

Optional: SM1 mounted version available, with additional charge SGD10 for each SM1 mount(c/w SM1 retaining ring and black teflon washer)

Substrate Material: Schott NG9 glass
Outer Diameter:

DIA 25.4,-0.2/+0.0mm

Substrate Thickness 2.0 +/-0.1mn
Surface Quality 40/20 ~ 60/40 S/D per MIL Standard
Surface Flatness <Lambda/4 at 633nm per 25mm on-jig tested
Optical Density: 2.0 +/-0.2; typically with tolerance: +/-5%
Parallelism: <1 arc minute
Calibration Wavelength: 550nm (spectrally flat absorption coefficient in the visible region of 400 - 650 nm)
Coating(double surfaces):  AR/AR @ 350-700nm (R<0.5% max over 350-700nm, 0-deg design)
Temperature Range -50 ~ +80 C-deg
Mount Type:  Unmounted