Focus Measuring Instrument - Beijing Dehua-Fornitore globale

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Focus Measuring Instrument - Beijing Dehua

• EFL • BFL • FFL • On axis MTF • Curvature radius detection focus gauge - Beijing Dehua

Product details

Model Series: Focus Measuring Instrument - Beijing Dehua

●OptiSpheric●OptiSpheric L●OptiSpheric Autofocus

●OptiSpheric L Autofocus●OptiSpheric 1000 Autofocus

Application:

• EFL•BFL•FFL•On axis MTF•Curvature radius detection

Scalable measurement:

• Artificial intraocular lens (IOL) • Plane optical element angle • C-Lens (EFL) • Multi band measurement capability

• Transmission or reflection center deviation • Non spherical lens center deviation • Lens center thickness

Measurement range and accuracy:

Focal length (EFL) measurement

EFL+/-	OptiSpheic	OptiSpheric L	OptiSpheric Autofocus	OptiSpheric L Autofocus	OptiSpheric 1000 Autofocus
Standard measurement range	+5 … +250mm -5 …-250mm	+5 … +500mm -5 …-450mm	+5 … +250mm -5 …-250m	+5 … +500mm -5 …-450mm	+5 … +1000mm -5 …-1000mm
Expand measurement range	1 …5mm	1 …5mm	1 …5mm	accessible1000mm	Up to 2000mm
Sample diameter	1 … 35(75)mm	1 … 35(75/150)mm	1 … 35(75)mm	1 … 35(75/150)mm	1 … 75(150)mm
Repeatability	0.03 … 0.2%
measurement accuracy	5 …25mm: 0.1 … 0.3% 25 …500mm: 0.03% … 0.1% 500 …1000mm: 0.05% … 0.3%
Measurement time	Manual focusing:3 … 20second Measurement time: Mouse click		First measurement:5 … 8second Subsequent measurements:3 … 5second

Measurement of On Axis Transfer Function (MTF)

On the axisMTFmeasure	OptiSpheic	OptiSpheric L	OptiSpheric Autofocus	OptiSpheric L Autofocus	OptiSpheric 1000 Autofocus
measuring range	excellentMTFMeasurement:5 …75mmEFL	excellentMTFMeasurement:5 …75mmEFL	excellentMTFMeasurement:5 …75mmEFL	excellentMTFMeasurement:5 …75mmEFL	excellentMTFMeasurement:5 …100mmEFL
Measurement mode	Manual focusing, automatic measurement		Automatic focusing, automatic measurement
Wavelength Range	400 … 750(1000)nm
spatial frequency	0 … 300(500)lp/mm
Knife edge analysis ● Repeatability ● Accuracy	2% 3%
Slit evaluation ● Repeatability ● Accuracy	1% 2%

Back intercept (BFL) and curvature radius measurement

Extended technical parameters: center deviation measurement

Measurement of center deviation using transmission and reflection methods	OptiSpheic	OptiSpheric L	OptiSpheric Autofocus	OptiSpheric L Autofocus	OptiSpheric 1000 Autofocus
measuring range	+/-3…+/-250mm	+/-3…+/-400mm	+/-3…+/-200mm	+/-3…+/-400mm	+/-5…+/-500mm
	Scalable to+/-2000mm
Repeatability	+/- 0.1Microns or+/-1second
measurement accuracy	+/- 0.2Microns or+/-2second
Measurement time	3 … 15second

Angle measurement

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