Main > Product > Machine Vision Lenses > Low Distortion Macro Lens > VS-LDA Series > VS-LDA75
VS-LDA75
LDA Series is design for producing low distortion image even when using with extension tubes 10 models from focal lengths f4mm～f75mm with reduced shading. Consistence Compact size: of 32mm in diameter (except for VS-LD 6.5). For VGA ～3 Megapixel sensors
| Model | VS-LDA75 | ||||
|---|---|---|---|---|---|
| Focal Length | 75 mm | ||||
| Maximum Aperture Ratio | 1:3.8 | ||||
| Optical mag. range | x 0.15 ~ × 0.35 | ||||
| Optical mag. | x 0.15 | x 0.20 | x 0.30 | x 0.35 | |
| 2/3" | 47.3 × 56.0 | 35.5 × 42.0 | 23.7 × 28.0 | 20.3 × 24.0 | |
| FOV (VxH mm) | 1/2" | 32.0 × 42.7 | 24.0 × 32.0 | 16.0 × 21.3 | 13.7 × 18.3 |
| 1/3" | 24.0 × 32.0 | 18.0 × 24.0 | 12.0 × 16.0 | 10.3 × 13.7 | |
| WD | 527.5mm | 404.2 mm | 280.9 mm | 245.6 mm | |
| O/I (Object & Imager distance) | 616.0 mm | 496.4 mm | 380.5 mm | 348.9 mm | |
| Working F/# *Value at Iris open | 4.1 | 4.2 | 4.4 | 4.5 | |
| TV distortion | 0.03 % | 0.02 % | 0.00% | -0.01 % | |
| Operation of Iris & Zoom | Manual (Lock crew M2) | Manual (Lock crew M2) | Manual (Lock crew M2) | Manual (Lock crew M2) | |
| Wavelength | Visible | Visible | Visible | Visible | |
| Camera mount | C-mount | ||||
| Flange Back | 17.526 mm | ||||
| Sensor size (max.) | 2/3" | ||||
| Filter Thread | M 27 P= 0.5 | ||||
| Weight (approx.) | 92 g | ||||
| Dimension | Φ 30.5 (MAX) × | L = 71.0 (×0.15) | ~ 85.8 (×0.35) mm |
| Lens Model | VS-LDA75 | |||
|---|---|---|---|---|
| Extension Ring (mm) | WD Minimum(mm) | WD Maximum (mm) | Mag @ Min WD | Mag @ Max WD |
| 0.5 | 241.5 | 505.5 | 0.157x | 0.357x |
| 1.0 | 237.5 | 485.3 | 0.164x | 0.364x |
| 1.5 | 234.2 | 469.4 | 0.170x | 0.370x |
| 2.0 | 230.5 | 452.2 | 0.177x | 0.377x |
| 5.0 | 211.2 | 373.6 | 0.218x | 0.418x |
| 10.0 | 186.8 | 293.8 | 0.285x | 0.485x |
| 15.0 | 168.0 | 243.8 | 0.353x | 0.553x |
| 20.0 | 153.6 | 210.4 | 0.420x | 0.620x |
| 25.0 | 141.8 | 185.8 | 0.488x | 0.688x |
| 30.0 | 132.1 | 167.3 | 0.556x | 0.756x |
| 35.0 | 124.1 | 153.0 | 0.623x | 0.823x |
| 40.0 | 117.3 | 141.3 | 0.691x | 0.891x |
| 45.0 | 111.5 | 131.8 | 0.758x | 0.958x |
| 50.0 | 106.4 | 123.8 | 0.826x | 1.026x |
