Filters

Narrow Bandpass Filters

Flurorescence Filters

Dichroic Filters

Multi-bandpass Filters

Notch Filters

Edgepass Filters

Neutral Density Filters

Hot & Cold Mirrors

Color Glass Filters


Capabilities

Over 960 existing coating designs that can be modified to your needs

Fully customized filter and coating designs

Test certificates and spectral measurements available

Change control available

Precision optical filters block, transmit, and reflect selected wavelengths in your system. Whether you need to clean up a laser beam, increase contrast in a machine vision system, or separate fluorescence from excitation wavelengths, Golden Way Scientific has an appropriate filter solution.

Golden Way Scientific is a leading producer of optical filter coatings including fluorescence, dichroic, narrow bandpass, multi-bandpass, notch, edge, and neutral density filters. From small quantities for prototyping to large quantities for production, our engineers can create a solution for you. Our experience in a wide variety of applications will help guide you to finding the best filters for your application. What can we make for you?

Filter Coating Capabilities
Dimensions (Diameter or Square) 1.0 - 150.0mm
Anti-Reflective Wavelength Range 250 – 16000nm
Shortpass Filter Cut-Off Wavelength 320 – 16000nm
Longpass Filter Cut-On Wavelength 240 – 16000nm
Bandpass Filter CWL, OD, and Bandwidth 213 – 10,600nm, >OD7, Narrowband to Broadband
Notch Filter CWL 355 – 1064nm
Filter Center Wavelength (CWL) Tolerance ±3nm
Filter Edge Tolerance <1% Deviation

Optical Measurement Equipments

OptiSpheric 2000 AF
Measurement parameters EFL, R, Center Deviation, FFL, BFL, MTF, Wedge Angle (Parallelism)
EFL test range +1 ~ +2000mm
-1 ~ -1500mm
EFL measurement accuracy 0.03% ~ 0.30%
R,BFL test range ±1mm ~ ±750mm
R BFL measurement accuracy 0.05% ~ 0.30%
Center Deviation Test Range ±1mm ~ ±2000mm
Center deviation measurement accuracy ±0.2um or ±2 arcsec
Wedge angle (parallelism) measurement accuracy ±1 arcsec
Ultra-Spherotronic
Applications and Measurements Contact spherical curvature radius measurement
Curvature radius test range L±6mm ~ ∞
Diameter of sample to be tested 10 ~ 500mm
Curvature Radius Measurement Accuracy 0.005%
Linear encoder working distance ±30mm
Linear encoder absolute accuracy
 0.05um
Ultra-Spherotronic
Measurement mode Reflection method to measure the angle between any two adjacent polished surfaces of a prism
Measuring range 0 ~ 360°
Measurement accuracy

Single measurement: 0.50"

Multiple measurements: 0.20"

Rotary encoder resolution 0.036”
Rotary encoder accuracy  0.20”
Interferometer Zygo GPI
Standard lens diameter 100mm
Flat Standard Lens Accuracy Lambda/20 @ 633nm
Measurement repeatability Lambda/100 @ 633nm
Spherical standard lens F-number F/0.65, F/1.6, F/3.3, 
F/7.0,F/1.0,F/10.7
Spherical Standard Lens Accuracy Lambda/10 @ 633nm
Spectrophotometer Lambda 950
Applications and Measurements Transmittance and reflectance measurement of planar components
wavelength range UV/VIS/IR (185nm ~ 3300nm)
UVVis sub-band resolution ≤0.05nm
Infrared band resolution ≤0.20nm
Stray light@220nm& 340nm&370nm ≤0.00007%T
wavelength repeatability ≤0.20nm

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