In addition to having high transmission, Kowa's HC-VIS-SW series is IR-Corrected. The primary benefit for IR-Correction is that it allows an image to remain in focus even when the wave-length changes from visible to infrared or vice verse. With a standard visible, NIR or SWIR lens, a focus shift will occur due to differences in the refractive index if the wavelength fluctu-ates. However, by incorporating extra low dispersion (XD) glass and carefully aligning all internal lens elements, such focus shift problems are eliminated.
Features:
Focal Length (mm) | 50mm |
Image Size (mm) | 12.8x9.6 (Φ16) |
Iris Range (F-Stop) | F2.5 ~ F16 |
Focusing Range (m) | 0.5~∞ |
Iris |
Manual |
Focus | Manual |
Shooting Range at M.O.D. (mm) | 127.0(H)x95.0(V) |
Angle Of View (Degrees) | 1" - 14.6 x 11.0 2/3" - 10.0 × 7.6 1/1.8" - 8.2 × 6.2 |
Resolution (Center, Corner) | 160lp/mm, 100lp/mm |
TV Distortion (%) | -0.11 |
Back Focus in Air (mm) | 34.9 |
Mount | C-Mount |
Filter Thread (mm) | M30.5xP0.5 |
Size (mm) (∞) | Φ39.5×71 |
Weight (g) | 155 |
Temperature Range | 10°C~+50°C |