Light Measurement
PR-735
Overview
For situations when measuring the NIR is important the PR-735 comes into its own. It uses 512 detectors to sample the emitted spectrum from 380 to 1100 nm yielding a resolution of 1.348 nm/pixel. Data is reported in 2 nm increments.
Ease of navigation through menus, and vivid information screens including a full colour spectrum, is supplied by the high resolution colour touch screen display. Up to 8 measuring apertures can be supplied on the instrument providing unequaled spot size /sensitivity flexibility.
The capability to synchronize measurements (AutoSync®) to the frequency of the source (e.g. 70Hz display) means repeatable results.
An external trigger circuit lets you make precise measurements of flashing sources such as xenon strobes. The PR-730 can measure as low as 0.00015 cd/m². Accurate measurements of polarized sources like LCD's is guaranteed by the extremely low polarization characteristcs (<0.2%).
The PR-730 has an optional user variable bandwidth capability - select between 4, 10, 16 nm spectral bandwidths to ensure the optimum conditions for virtually any sample.
Features
Easy to Use
The high-resolution, full colour touch screen display provides both an easy means of negotiating through instrument setup menus and of viewing measured results, including a full-colour Spectral Power Distribution (SPD) graph of the measured sample
Connectivity
A wide selection of interfacing options, USB, RS232 and Bluetooth wireless, adds convenience and ease when communicating with and controlling the PR-735. With the Bluetooth option, the instrument will communicate up to 30m away from the base - ideal for situations where cabling is not possible.
Variable Spectral Bandwidth
The PR-735 introduces a new feature to the SpectraScan line - variable spectral bandwidth. One of 3 bandwidth settings (4, 10 or 16 nm) can be selected regardless of the measuring aperture being used. This lets the user change the bandwidth without changing apertures - or instruments.
Flexibility
The PR-735 provides unsurpassed flexibility with the world's largest selection of optical accessories. It is the only instrument in it's class that can measure radiance/luminance, irradiance/illuminance, radiant flux/lumens and radiant intensity/candelas simply by changing accessories.
Control
Remote Mode software makes it possible to control the PR-735 from a custom application as easy as sending and receiving text characters over any of the interfaces. SpectraWin is a full Windows based program that makes measurements, graphically dislays results and has powerful data manipulation capabilities.
An RGB Display Cal Module can be added to SpectraWin - it provides and interactive capability that helps automate the process of calibrating displays or digital projectors.
Manufactured by Photo Research
Specifications
Wavelength Range | 380 nm - 1100 nm |
|---|---|
Detectors | 512 Cooled Detectors |
Spectral Bandwidth | 16 nm, optionally user switchable between 4, 10 and 16 nm |
Wavelength Accuracy | ± 2 nm |
Spectral Resolution | 2nm |
Digital Resolution | 16 bits |
Available Measuring Apertures (Select up to 8 per instrument) | 2°, 1°, 1/2°, 1/4°, 1/8°, 0.2°, 0.1°, 0.1° x 1° (Horizontal. Slit), 0.1° x 2° (Vertical Slit), 0.5° x 1.5° (Horizontal Slit) |
Standard Lens | MS-75 - 75 mm telephoto |
Minimum Measuring Diameter with Std. Lens and 1° aperture | 5.31 mm |
Luminance Sensitivity for Illuminant A† | 0.00015 cd/m² with 2° aperture |
Luminance accuracy† | ±2% against NIST traceable Illuminant A standard at 0.005 cd/m² with 2° aperture |
Luminance repeatability † | ≤1% at 0.005 cd/m² with 2° aperture against NIST traceable Luminance Standard at 2856K (Illuminant A) |
Colour Accuracy † | ±0.0015 for CIE 1931 x, y for Illuminant A (2856K) at 0.005 cd/m² with 2° aperture |
Colour Repeatability † | 0.0005 for CIE 1931 x, y for Illuminant A (2856K) at 0.005 cd/m² with 2° aperture |
Polarization Error | <0.2% |
Stray Light Stray Light | <0.06% |
Storage | Secure Digital (SD) Card |
AutoSync Range | 20 to 400 Hz |
Interfaces | USB standard. Bluetooth or RS232 optional |
Power Requirements | AC Adapter (90 - 240 VAC) or optional Rechargeable Li-ion battery |
Battery Life | > 8 hours |
Weight | 6.46 kg |
Dimensions | 38.7 cm L x 21.0 cm W x 20.3 cm H |
Operating Temperature | 1° to 35° C |
Humidity | 0 - 90% non-condensing |
†Luminance values are with the 16 nm bandwidth
PR-735 Field Coverage (Spot Diameter) in mm
Accessory | Working Distance | 2° Aperture | 1° Aperture | 0.5° Aperture |
|---|---|---|---|---|
MS-75 | 355 mm | 10.5 - | 5.25 - | 2.63 - |
SL-0.5X | 91.4 mm | 3.0 – | 1.50 - | 0.75 - |
SL-1X | 46 mm | 1.78 - | 0.89 - | 0.445 - |
MS-2.5X | 46 mm | 1.02 | 0.51 | 0.225 |
MS-5X | 28 mm | 0.578 | 0.289 | 0.145 |
MS-7.5 | 100 mm | 35.0 - | 17.5 - | 8.75 - |
LA-730 | Contact | 13.2 | 13.2 | 13.2 |
FP-730 | Contact | 3.17 | 3.17 | 3.17 |
Accessory | Working Distance | 0.25° Aperture | 0.2° Aperture | 0.125° Aperture | 0.1° Aperture |
|---|---|---|---|---|---|
MS-75 | 355 mm | 1.32 - | 1.05 - | 0.658 - | 0.525- |
SL-0.5X | 91.4 mm | 0.375 - | 0.30 - | 0.188 - | 0.150 - |
SL-1X | 46 mm | 0.226 - | 0.178 - | 0.111 - | 0.089 - |
MS-2.5X | 46 mm | 0.128 | 0.102 | 0.064 | 0.051 |
MS-5X | 28 mm | 0.072 | 0.058 | 0.036 | 0.029 |
MS-7.5 | 100 mm | 4.38 - | 3.50 - | 2.19 - | 1.75 - |
LA-730 | Contact | 13.2 | 13.2 | 13.2 | 13.2 |
FP-730 | Contact | 3.17 | 3.17 | 3.17 | 3.17 |
PR-735 Photometric Minimum Sensitivity (Cd/m²)
Accessory | 2° Aperture | 1° Aperture | 0.5° Aperture |
|---|---|---|---|
MS-75 | 0.00017 | 0.0007 | 0.0028 |
SL-0.5X | 0.00017 | 0.0007 | 0.0028 |
SL-1X | 0.00017 | 0.0007 | 0.0028 |
MS-2.5X | 0.0005 | 0.0017 | 0.0069 |
MS-5X | 0.0007 | 0.0028 | 0.011 |
MS-7.5 | 0.00017 | 0.0007 | 0.0028 |
LA-730 | 0.00017 | 0.0007 | 0.0028 |
FP-730 | 0.0005 | 0.0017 | 0.0069 |
CR-730 | 0.001 Lux | 0.004 Lux | 0.016 Lux |
Accessory | 0.25° Aperture | 0.2° Aperture | 0.125° Aperture | 0.1° Aperture |
|---|---|---|---|---|
MS-75 | 0.011 | 0.017 | 0.044 | 0.07 |
SL-0.5X | 0.011 | 0.017 | 0.044 | 0.07 |
SL-1X | 0.011 | 0.017 | 0.044 | 0.07 |
MS-2.5X | 0.028 | 0.045 | 0.110 | 0.17 |
MS-5X | 0.045 | 0.0007 | 0.028 | 0.28 |
MS-7.5 | 0.011 | 0.017 | 0.044 | 0.07 |
LA-730 | 0.011 | 0.017 | 0.044 | 0.07 |
FP-730 | 0.028 | 0.045 | 0.110 | 0.17 |
CR-730 | 0.064 Lux | 0.10 Lux | 0.26 Lux | 0.41 Lux |
Sensitivity values are for 10:1 signal to noise measuring illuminant A (2856 Kelvin) with 16 nm bandwidth.
For 4 nm bandwidth, multiply values by 16. For 10 nm bandwidth, multiply values by 2.56.