Light Measurement
PR-655
Overview
For nearly 15 years, the PR-650 SpectraScan was the most widely used spectroradiometer in the world - the workhorse of the industry. The PR-655 replaces the world renowned PR-650 with a plethora of enhancements. This unique, portable battery powered instrument utilizes a fast-scanning 128 detector element spectrometer with a spectral resolution of 3.12 nm per pixel and is supplied with an automated measure shutter. A 1° aperture is standard equipment with the PR-655 - an optional ½° aperture can be ordered.
Other hardware features include AutoSync® for automatically synchronizing to the source refresh rate insuring the utmost accuracy, an optional External Trigger port allowing remote measurement activation from either a push button or peripheral device, a Secure Digital (SD) port for measurement storage, and a long lasting rechargeable Lithium-Ion (Li-Ion) battery.
Features
Easy to Use
The PR-655 menus are accessed via the on-board, 57 x 75 mm high resolution, full colour touch screen LCD display and 5-way navigation keypad. Following a measurement, the PR-655 displays data and colour spectral graphs on the system display. The PR-655 design provides stand alone operation - no PC required. The PR-655 can be also be controlled via the world famous SpectraWin™ 2 software or by using text based commands (Remote Mode). All communications are via the standard USB interface or the optional Bluetooth or RS-232 interfaces.
Flexibility
The unique design of the PR-655 makes tasks such as spectrally based photometric and colourimetric measurements, source spectral power distribution, dominant wavelength and correlated colour temperature quick and simple.
For applications other than radiance or luminance the PR-655 can be supplied with optical accessories such as a cosine receptor for irradiance / illuminance, LR-127 LED Analyzer for testing LED's to CIE 127, fibre probe for remote non-line-of-sight luminance testing, and a series of magnification lenses for small spot size analysis. An RGB option is available that provides an interactive method for display white point calibration based on spectral measurements.
Wide Dynamic Range
The PR-655 provides a dynamic range of 0.7 to 102,000 cd/m², without the need for any external neutral density filters. Ideal for contrast and brightness measurements of display panels and a wide spectrum of other target devices.
Connectivity
It's easy for the PR-655 to talk to the outside world - it comes equipped with USB and Bluetooth® (optional) wireless interfaces. It is supplied with text based, Remote Mode syntax and a driver that emulates an RS-232 interface (COM: port) making it a simple task to generate custom programming to perform specific tasks or for inclusion in an ATE environment. If required, an optional traditional RS-232 Interface can be added.
Manufactured by Photo Research
Specifications
Detector | 128 detector array |
|---|---|
Spectroradiometer Wavelength Range | 380 to 780 nm (360 to 760 nm optional) |
Optics | Pritchard optical system |
Digital Resolution | 16 bits |
Spectral Resolution | 3.12 nm / pixel |
Spectral Bandwidth | 8 nm (5 nm optional) |
Spectral Accuracy | ± 1 nm |
Luminance Range | 0.7 - 102,000 cd/m² † |
Luminance Accuracy (Against NIST luminance standard) | ± 2% * |
Luminance Repeatability | ≤ 1% * |
Colour Accuracy (for Illuminant A) | ±0.0015 in CIE 1931 x,y * |
Measurement Capabilities | Luminance, Illuminance, luminous intensity, chromaticity, correlated colour temperature, dominant wavelength |
Measurement Time | 3 ms to 6000ms (6 secs) |
AutoSync Range | 20 to 400 Hz |
Battery | Rechargeable Lithium-Ion. (≥ 12 hours continuous operation) |
Weight | 1.7 kg |
Operating Temperature | 1° to 35° C |
† Sensitivities are for 10:1 signal to RMS noise against an Illuminant A based NIST traceable luminance standard
* Luminance level of 10 cd/m² with an Illuminant A based NIST traceable luminance standard with the 1° aperture.
PR 655 Field Coverage and Sensitivity
Accessory | Working Distance | Field Coverage (mm) | Sensitivity Range(cd/m²) |
|---|---|---|---|
MS-75 | 355 mm | 5.25 | 0.7 |
SL-0.5X | 91.4 | 1.50 | 0.7 |
SL-1X | 46 | 0.89 | 0.7 |
MS-2.5X | 46 mm | 0.51 | 1.7 |
MS-5X | 28 mm | 0.289 | 2.7 |
MS-7.5 | 100 mm | 17.5 | 0.7 |
LA-655 | Contact | 13.2mm | 0.7 |
FP-655 | Contact | 3.17m | 2.7 |
CR-655 | N/A | N/A | 4.3 |
Schematics
