Gen. III (HP1850 B/W AG) Ø43mm
Category: 43 mm tubes
Tube as a BLACK/WHITE
model with AUTO-GATING
function without image inversion
AUTO-GATING is a special control electronics solution that is able to switch the tube on and off with a very high frequency, which is imperceptible by the eye. This innovative function allows the observer to operate in bright ambient light, or even in daylight operations. By keeping the full capability and performance, this function provides an efficient wear-protection of the device. Furthermore, this electronic solution eliminates the glare of the light source by maintaining the performance. Moreover, this function meets the high tactical requirements – for instance by operating under bright lighting conditions, such as military operations in urban terrains, that define many of today’s missions. This special control electronic solution prevents blinding and shadowing by various types of light sources or fire and helps to minimize the abrasion of the tube.
BLACK/WHITE is the alternative black/white night vision technology. Several studies have shown that observed happenings at night are looking more natural by using the black/white technology, instead the usual green one. The black/white technology is invented for those, who value a less eye stressing night observation. This black/white technology is more precise and clearer by transmitting information such as contrast, shapes and shadows.
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Features:
- Automatic brightness control (ABC)
- Bright source protection (BSP)
General technical data according to specification:
| Type name | Gen. III (HP1850 B/W AG) as a BLACK/WHITE model with AUTO-GATING function |
| Tube diameter | 43mm |
| Phosphor | P45 (white) |
| Input window | Glass |
| Output window | Non inverting fibre-optic |
| Type of contacts | Pin contacts |
| Specification | On request |
| Drawing | On request |
| Parameters | minimum | typical | maximum | unit |
| FOM (performance value of a tube) | 1836 | |||
| Limiting resolution | 68 | lp/mm | ||
| S/N (signal to noise ratio) at 108μlx | 27 | |||
| Cathode sensitivity at 2850K | 2000 | μA/lm | ||
| Luminance, gain at 2×10-6 fc | 40000 | 70000 | fl/fc | |
| MTTF (operational life) | 10000 | hours | ||
| IR wavelength operating range | 550 | 900 | nm | |
| Radiant sensitivity at 830nm | 210 | mA/W | ||
| MTF at 2,5 lp/mm | % | |||
| MTF at 7,5 lp/mm | % | |||
| MTF at 15 lp/mm | % | |||
| MTF at 25 lp/mm | % | |||
| MTF at 30 lp/mm | % | |||
| Useful cathode diameter | 17,5 | mm | ||
| Output uniformity at 2850K | ||||
| HALO size (illumination spot 0,2mm) | 1,0 | mm | ||
| Maximum output brightness | 2 | 17 | cd/m2 | |
| E.B.I. (equivalent background illumination) | μlx | |||
| Shock resistance | 500 | G | ||
| Weight | 90 | gram |
AUTO-GATING power supply unit
| Input voltage | 2 | 3,5 | Volt | |
| Input current | 35 | mA | ||
| Luminance dynamic range | 1×10−6 | 5×103 | Lux |
Maximum number of spots according to specification:
| Spots diameter in micrometers | zone 1 (d=5,6mm) |
zone 2 (d=5,6mm-14,7mm) |
zone 3 (d=14,7mm-17,5mm) |
| > 380 | 0 | 0 | 0 |
| 300 − 380 | 0 | 0 | 0 |
| 230 − 300 | 0 | 0 | 0 |
| 150 − 230 | 0 | 1 | 1 |
| 75 − 150 | 2 | 2 | |
| 75 | minimal | minimal | minimal |
All regular articles have a 14 days right of return and 5 years guarantee, with a service address in the Germany! Except Commercial Grade models, these devices are covered by the general 2 years guarantee.
