Scanning Spectroradiometers Comparison

Model OL 750D Model OL 750D-S Model OL 750S Model OL 756

Monochromator Type

Double Additive Double Subtractive Single Portable Double

Wavelength Range

200 nm to 30 µm 200 nm to 30 µm 280 nm to 30 µm 200 nm to 800 nm

Stray Light Rejection

1.00E-08 1.00E-08 1.00E-04 1.00E-08

Optical Bandwidth FWHM *

0.25 nm to 8 nm 0.5 nm to 16 nm 0.5 nm to 16 nm 0.4 nm to 10 nm FWHM

Wavelength Accuracy *

+/- 0.05% +/- 0.05% +/- 0.05% +/- 0.15 nm

Wavelength Precision

+/- 0.01% +/- 0.01% +/- 0.01% +/- 0.025 nm

Focal Length

254 mm (x2) 254 mm 254 mm 100 mm

Aperture

f/4 f/4 f/4 f/3.5

Detector Channels

2 or 4, AC or DC 2 or 4, AC or DC 2 or 4, AC or DC 1, DC

Chopper Frequency

10-350 Hz 10-350 Hz 10-350 Hz N/A

Detector Options

PMT, Si, InGaAs, Ge, PbS, PbSe, InSb, HgCdTe, Pyroelectric PMT, Si, InGaAs, Ge, PbS, PbSe, InSb, HgCdTe, Pyroelectric PMT, Si, InGaAs, Ge, PbS, PbSe, InSb, HgCdTe, Pyroelectric PMT

Optical Accessory Mounting

Entrance or Exit Entrance or Exit Entrance or Exit Entrance only