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Aspherical Elements

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Polished Aspherical Lens

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Molded Aspherical Lens

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Diamond-Turned Aspherics (CNC Turning)

Capabilities

Golden Way Scientific manufacturers millions of optics every year throughout our four global facilities. Join us as we take you through the creation of an aspheric lens, from molding to grinding to polishing, centering, and metrology.

Aspheric Manufacturing Capabilities
	Commercial	Standard	Precision	Best Effort
Diameter	10 – 120mm	10 – 120mm	10 – 120mm	10 – 200mm
Diameter Tolerance	-0.100mm	-0.05mm	-0.01mm	-0.005mm
Asphere Figure Error (P-V) @ 633nm	5 waves	1 wave	0.5 wave	0.5 wave
Vertex Radius (Asphere)	±0.5%	±0.1%	±0.05%	±0.05%
Surface Profile Deviation	1.5um	1.5um	1.0um	0.5um
Centering (Beam Deviation)	5 arcmin	3 arcmin	1 arcmin	0.5 arcmin
Center Thickness Tolerance	±0.100mm	±0.050mm	±0.030mm	±0.010mm
Surface Quality (Scratch Dig)	80-50	60-40	40-20	20-10
Surface Roughness (RMS)	5nm	3nm	1.5nm	1nm

Optical Measurement Equipments

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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

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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

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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”

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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

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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