Fast Optical Shutters
The FOS (Fast Optical Shutter) series is a collection of optical shutters using liquid crystal based optical polarizers. The transmission of light is regulated by an external voltage. Compared to conventional mechanical shutters, the LC shutters operate vibration-free, without moving components and are working with very short switching times.
Optical Shutters – Models
| Model | Open state transmittance | Contrast | Closing time (T100-T10) | Opening time (T0-T90) | VD |
|---|---|---|---|---|---|
| FOS | ≥ 39.5 % | ≥ 1,000:1 ≥ 1,800:1 | ≤ 6 ms ≤ 150 µs | ≤ 30 ms ≤ 35 ms | 4 V RMS 24 V RMS |
| FOS-ETR | ≥ 32.5 % | ≥ 850:1 ≥ 1,200:1 | ≤ 6 ms ≤ 500 µs | ≤ 35 ms ≤ 40 ms | 5 V RMS 18 V RMS |
| FOS-NIR(1100) | ≥ 37.0 % | ≥ 250:1 ≥ 350:1 | ≤ 5 ms ≤ 120 µs | ≤ 15 ms ≤ 20 ms | 5 V RMS 24 V RMS |
| X-FOS(G2) | ≥ 37.5 % | ≥ 1,800:1 | ≤ 50 µs | ≤ 1.8 ms | 18 V RMS |
| X-FOS(G2)-CE | ≥ 30 % | ≥ 120,000:1 | ≤ 50 µs | ≤ 1.8 ms | 18 V RMS |
| X-FOS(G2)-LAS | under development | ||||
| PolarSpeed-S | ≥ 37.5 % | ≥ 300:1 | ≤ 30 µs | ≤ 30 µs | 24 V RMS |
| PolarView-ND(212) | ≥ 25 % | ≥ 1,000:1 | ≤ 10 ms | ≤ 15 ms | 4.5 V RMS |
| PolarView-ND(14)-F | ≥ 50 % | ≥ 10:1 | ≤ 200 ms | ≤ 700 ms | 7 V RMS |
| FSD | ≥ 83 % | light scattering | ≤ 7 ms | ≤ 9 ms | 110 V RMS |
Sizes
| Standard size | Outer dimensions | Clear aperture |
|---|---|---|
| 7x8 | 7,0 mm x 8,2 mm | 5.0 mm x 5.0 mm |
| 13x15 | 13,0 mmx 15,0 mm | 9.8 mm x 9.8 mm |
| 1x1 | 25.4 mm x 25.4 mm | 22.2 mm x 20.2 mm |
| 2x2 | 50.8 mm x 50.8 mm | 47.6 mm x 45.6 mm |
| D1 (circular) | 25.4 mm diameter | 22.2 mm diameter |
| D2 (circular) | 50.8 mm diameter | 47.0 mm diameter |