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2/3″ Vidicon LI501-1MK is used in special purpose TV cameras in conditions of high radiation up to 5∙107 rad.
A target is based on CdSe.
Vidicon has magnetic focusing and electrostatic deflection.
Construction design:
Glass material; without base with ring outputs of signal plate and grid.
LI501—1MK CIRCUIT
Specifications
| Target active area, mm | 6,6×8,8 |
| Length, mm | ≤90 |
| Diameter, mm | 17,8 -0,6 |
| Diameter of contact rings, mm | 19,6 ± 0,1 |
| Mass, g | ≤18 |
| Heater voltage, V | 6,3 |
| Heater current, mA | 80-115 |
| Anode voltage, V | 250 |
| Deflectron electrode voltage, V | 220 |
| Grid voltage, V | 340 |
| Pickup plate voltage, V | 10-25 |
| Modulator operating voltage, V | 0-15 |
| Modulator cut-off (negative) voltage, V | ≤20 |
| Target illumination, lx | 1 |
| Signal current, μA | ≥0,15 |
| Resolution at the center, TVL | ≥600 |
| Resolution in the corners, TVL | ≥550 |
| Modulation depth at 400 TVL (at the center), % | ≥55 |
| Decay lag after 40 ms, % | ≤14 |
| Dark current, μA | ≤0,003 |
| Dark noise nonuniformity, % | ≤15 |
| Geometric distortion , % | ≤2,5 |
| Target maximum illumination, lx | 4 |
| Exposure dose power, rad/h | ≤1·10 5 |
| Capacity between pickup electrode and other electrodes connected together, pF | ≤3,5 |
| Warm-up time, s | ≤30 |
| Guaranteed life, h | 1000 |