Spectralon Diffuse Reflectance Targets

Labsphere Spectralon Reflectance Targets

Near-perfect Lambertian reflectance targets for field calibration

Spectralon targets provide near-perfect Lambertian (diffuse) reflectance and are used to calibrate spectroradiometers and remote sensing apparatus in the 250-2500nm range. Spectralon targets are ideal for laboratory and field applications that require long exposure to harsh environmental conditions. Because of the diffuse reflectance properties of Spectralon, these targets maintain a constant contrast over a wide range of lighting conditions. Spectralon targets are available in plates up to 24 inches square and are available in white or grey scale material and are mounted in a rugged anodised aluminium frame. Larger reflectance targets can be constructed and custom targets of various reflective values are available in sizes up to 3 meters square.

Compared with painted targets, Spectralon is thermally stable, durable, washable and waterproof and perfect for harsh environments and field calibration of remote sensing equipment. Spectralon targets are supplied calibrated for 8°/hemispherical reflectance factor traceable to NIST. The certificate supplied lists spectral reflectance from 250-2500nm.

Contrast Targets

Spectralon contrast targets are perfect for the calibration of video cameras, densitometers, the contrast transfer of propagation media and testing imaging system in both laboratory field conditions. These chemically inert targets are durable and washable, consisting of diffuse white (99% reflectance) and diffuse dark grey (10% reflectance) panels mounted side-by-side in an anodised aluminium frame. Spectralon multi-step targets consist of four panels mounted side-by-side of reflectance 99, 50, 25 & 12.5%. The four panels provide equal optical density differences and equal contrast, between any two adjacent panels.

Ordering Information

The table below lists the available, calibrated Spectralon reflectance and contrast targets. We are pleased to supply uncalibrated targets and non-standard sizes on request.

Model	Description	Model	Description
Spectralon Reflectance Targets
SRT-02-020	2%, 2 x 2 inches	SRT-60-020	60%, 2 x 2 inches
SRT-02-050	2%, 5 x 5 inches	SRT-60-050	60%, 5 x 5 inches
SRT-02-100	2%, 10 x 10 inches	SRT-60-100	60%, 10 x 10 inches
SRT-02-120	2%, 12 x 12 inches	SRT-75-020	75%, 2 x 2 inches
SRT-02-180	2%, 18 x 18 inches	SRT-75-050	75%, 5 x 5 inches
SRT-02-240	2%, 24 x 24 inches	SRT-75-100	75%, 10 x 10 inches
SRT-05-020	5%, 2 x 2 inches	SRT-75-120	75%, 12 x 12 inches
SRT-05-050	5%, 5 x 5 inches	SRT-75-180	75%, 18 x 18 inches
SRT-05-100	5%, 10 x 10 inches	SRT-75-240	75%, 24 x 24 inches
SRT-10-020	10%, 2 x 2 inches	SRT-80-020	80%, 2 x 2 inches
SRT-10-050	10%, 5 x 5 inches	SRT-80-050	80%, 5 x 5 inches
SRT-10-100	10%, 10 x 10 inches	SRT-80-100	80%, 10 x 10 inches
SRT-20-020	20%, 2 x 2 inches	SRT-99-020	99%, 2 x 2 inches
SRT-20-050	20%, 5 x 5 inches	SRT-99-050	99%, 5 x 5 inches
SRT-20-100	20%, 10 x 10 inches	SRT-99-100	99%, 10 x 10 inches
SRT-40-020	40%, 2 x 2 inches	SRT-99-120	99%, 12 x 12 inches
SRT-40-050	40%, 5 x 5 inches	SRT-99-180	99%, 18 x 18 inches
SRT-40-100	40%, 10 x 10 inches	SRT-99-240	99%, 24 x 24 inches
SRT-50-020	50%, 2 x 2 inches
SRT-50-050	50%, 5 x 5 inches
SRT-50-100	50%, 10 x 10 inches
SRT-50-120	50%, 12 x 12 inches
SRT-50-180	50%, 18 x 18 inches
SRT-50-240	50%, 24 x 24 inches
Spectralon Contrast Targets
SRT-MS-050	Multi-step: 99, 50, 25 & 12.5%; 5 x 5 inches
SRT-MS-100	Multi-step: 99, 50, 25 & 12.5%; 10 x 10 inches
SRT-MS-180	Multi-step: 99, 50, 25 & 12.5%; 18 x 18 inches
SRT-SP-100	Contrast: 99 & 10%; 10 x 10 inches
SRT-SP-180	Contrast: 99 & 10%; 18 x 18 inches