Cosine correctors are used to collect light from a 180° angle. This eliminates optical interface problems associated with the light collection sampling geometry inherent to other sampling devices such as bare fibre optics, collimating lenses, or integrating spheres.
Avantes offers four different models of cosine correctors: The CC-VIS/NIR has a 3.9 mm active area, and dimensions of 18 mm (L) X 6.5 mm (OD). The CC-VIS/NIR covers the full UV/VIS/NIR range of 200-2500 nm and is made of Quartz.
The CC-UV/VIS/NIR-8MM works as the CC-VIS/NIR, but has an active area of 8.0 mm and dimensions of 29 mm (L) X 12 mm (OD). The specialized CC-UV/VIS/NIR-5.0 has a 20 mm active area is used for solar measurement applications requiring a 5° angular field of view has a 20 mm active area and is much larger than the other cosine correctors measuring 317 mm (L) X 38 mm (OD).
|Diameter of active area||3.9 mm||8.0 mm||4.5 mm||20.0 mm|
|Diffusing material||Quartz (200-2500 nm), ca 1.5 mm thick||Quartz (200-2500 nm), ca 1.5 mm thick||Quartz (200-2500 nm), ca 1.5 mm thick||Quartz (200-2500 nm), ca 1.5 mm thick|
|Dimensions||6.5 mm diameter, 18 mm long||12 mm diameter, 29 mm long||10 mm diameter, 13 mm long||38 mm diameter, 317 mm long|
|Sampling geometry||Accepts light at/from 180°FOV||Accepts light at/from 180°FOV||Accepts light at/from 180°FOV||Accepts light at 5°FOV|
|Connector||SMA 905||SMA 905||1/4"-36 UNS||SMA 905|
|Temperature||-30°C to +100°C||-30°C to +100°C||-30°C to +100°C||-30°C to +100°C|
|CC-VIS/NIR||Cosine corrector for UV/VIS/NIR, incl. SMA adapter|
|CC-UV/VIS/NIR-8MM||Cosine corrector for UV/VIS/NIR, 8 mm area, incl. SMA adapter|
|CC-DA-4.5||Direct attach cosine corrector for all SMA AvaSpecs with diffusing material for UV/VIS/NIR, 4.5 mm|
|CC-UV/VIS/NIR-5.0||Cosine corrector for UV/VIS/NIR, 5.0°FOV, incl. SMA adapter|