JAZ Light Meter Irradiance Spectroradiometer

JAZ Light Meter Spectroradiometer

The innovative JAZ Light Meter from Ocean Optics is based upon a CCD spectrometer, but unlike standard instruments, the JAZ is fully self-contained and does not need to be tethered to a PC. With on-board photometric processing, plus battery pack, data storage and an integrated display, the JAZ Light Meter is atruly portable spectroradiometer for measuring the spectral irradiance and illuminance of light sources.

The JAZ Light Meter functions as an illuminance colorimeter but unlike tristimulus filter-based meters, the JAZ reports the correct illuminance (in lux) regardless of the type of light source under test. It has become common knowledge that inexpensive lux meters can give misleading readings with narrow spectrum light sources such as LEDs. For comparison measurements on two similar light sources, that may not be an issue, but if you care about the absolute illuminance, chromaticity or colour temperature of your light source, the accepted wisdom is that you should use a spectroradiometer. The only drawback has been that scanning spectroradiometers are bulky, slow and expensive, whilst compact CCD array spectrometers - whilst fast and affordable - have needed to tow a PC around with them.

The JAZ changes all that. It is the first totally portable spectroradiometer that can be taken out of the laboratory - just point the JAZ at your light source and it will report the exact illuminance in lux. Data can be saved to an on-board SD flash memory card and you can download your measurements to your PC for further analysis and computation of colorimetric parameters with SpectraSuite software (available separately) when you return to your desk. SpectraSuite will compute the CIE chromaticity, correlated colour temperature, colour rendering and many other colorimetric metrics.

JAZ Light Meter Accessories

The JAZ Light Meter is a pre-configured, pre-calibrated JAZ spectrometer that combines an OLED display module with CCD array spectrometer, reverse orientated keyboard, direct attach cosine diffuser, battery pack and ethernet module. On-board processing of spectroradiometric data and calculation of illuminance and PAR (photosynthetically active radiation) is performed by the JAZ-A-IRRAD software application which is supplied on an SD card that simply slots into the JAZ. The battery module enables you to measure for up to 8 hours typically without recharging, while JAZ's other SD card slots give you additional data storage capacity. You can also download data from JAZ onto your PC for post processing and colorimetric analysis with SpectraSuite.

The JAZ Light Meter package includes a rugged Peli case for safe transport and storage, while a light weight JAZ-Pack soft carry case is provided for when you want to travel light. The flexible JAZ-Mount tripod mount makes it simple to place the JAZ on a stable surface and tilt it towards the light source you wish to measure.

Specifications & Ordering Information

Model	JAZ Light Meter
Product Code	JAZ-ULM-200
Spectral Range	300 ... 850nm
Spectral Resolution	< 2nm
System Configuration	JAZ-S Spectrometer Module with grating #2, 10µm slit, L2 lens & order sorting filter
	JAZ-DPU-R Display Module with reverse orientation keyboard
	JAZ-B Batter Module with 2 x SD card slots
	JAZ-E Ethernet Module with 1 x SD card slot
	JAZ-A-IRRAD on-board photometric processing on SD card
	JAZ-Mount tripod mount
	CC-3-DA cosine receiver, direct attach
	SPEC-CAL spectroradiometric calibration, 300 ... 850nm, µW/cm2.nm
Accessories Included	PELI Case
	JAZ-Pack soft case
Measurement Capabilities - Onboard	Spectral irradiance, 300 ... 850nm (µW/cm2.nm)
	Illuminance (lux)
	PAR (photosythetically active radiation)
Measurement Capabilities - SpectraSuite	Luminous intensity (candelas)
	CIE tristimulus coefficients (XYZ)
	CIE 1931 chromaticity coordinates (xy)
	CIE 1976 chromaticity coordinates (u'v')
	Correlated colour temperature, CCT (Kelvin)
	Colour rendering index, Ra, R1-14
	Dominant wavelength & purity
Optional Accessories	SpectraSuite software (required for post processing of colorimetric parameters)