The 410-DHR is a product of collaboration between U.S. Naval Air Systems Command and Surface Optics, with vital input from the Naval Research Lab (NRL) and National Institute of Standards and Technology (NIST). It was developed to answer a broad need for a portable device for the verification of the optical properties of large objects in the field. The 410-DHR measures the integrated surface reflectance of a surface at two angles of incidence (20° and 60°) and for six discreet wavelength bands in the .9 to 12 μm spectral range.
|
Measured Parameter |
Directional hemispherical reflectance (DHR) |
|
Method |
Integrated total reflectance in a band for a given angle of incidence |
|
Measured Value |
Absolute reflectance (0-1) |
|
Calculated Value |
In-band emissivity |
|
Wavelength Bands (microns) |
410-DHR: .9 – 1.1, 1.9 – 2.4, 3.0 – 4.0, 3.0 – 5.0, 4.0 – 5.0, 8.0 – 12.0 410-DHR-c: .67 – 1.1, 1.5 – 2.0, 2 – 3.5, 3 – 4, 4 – 5, 8.5 – 15.8
Two configurations of this product are available. Due to regional restrictions, not all versions are offered globally. Contact Surface Optics to confirm availability in your location. |
|
Angle of Incidence |
20º & 60º from normal incidence |
|
Calibration Coupon |
Specular Gold |
|
Accuracy |
+/- .03 |
|
Repeatability |
± .005 units |
|
Beam Spot Size |
0.50 inches |
|
Measurement Time |
10 sec |
|
Sample Size & Geometry |
Flat: ≥ 0.5 in. diameter Curved: 6 in. convex; 12 in. concave |
|
Warm Up Time |
90 seconds |
|
Time Between Measurements |
2 seconds |
|
Sample Temperature |
Ambient or heated/cooled to 0 – 100º C |
|
Operating Temp |
0º to 40º C |
|
Storage Temp |
-25º to 70ºC |
|
Run Time |
2 hours on one battery. Battery easily replaced with continuous operation after battery replacement. |
|
Power Source |
Rechargeable battery (standard environmentally friendly NiMH) |
|
Battery Recharge Time |
1 hour |
|
IR Source |
Kanthal filament operated at about 1,000ºC |
|
Weight |
4.7 lb |
|
Form Factor |
H 11.54”, L 9.04”, W 3.27” (29.31 cm x 22.96 cm x 9.44 cm) |
|
Operator Interface |
LCD graphics screen, 1/4 VGA, touch screen, software buttons; trigger switch in handle |
|
Software Applications |
Pass/fail can be incorporated, user set values |
|
Diagnostics |
On screen status and signals monitor. Signal values stored with data. Raw data collection and display. |
|
Data Format |
Data files can be opened and post processed with Excel or a text processor |
|
Data Storage |
Removable SanDisk (SD) card |
|
Export Control |
ECCN #3A999.F |
Standard 410-DHR Components
Optional 410-DHR Components
