MX-10160: Difference between revisions
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=== MX-10160C === | === MX-10160C === | ||
* MIL-PRF-A3279602B (17 October 2003) | |||
* P-43 or equivalent phosphor | |||
* Low distortion fiber optic output, +-1 deg image inversion | |||
* Minimum specs: | |||
** 28 SNR | |||
** 64lp/mm resolution (45lp/mm high light resolution) | |||
** 2200uA/lm photocathode sensitivity | |||
** 240mA/W at 830nm | |||
** 120mA/W at 880nm | |||
** max EBI 2.5 | |||
** gain 50k to 80k fL/fc | |||
** Image alignment offset max 0.006 inch | |||
** Halo: early models max halo 0.70mm, later models with revised spec max 0.85mm | |||
** Electromagnetic interference (EMI): The assembly, when properly incorporated within a certified AN/AVS-6 system shall comply with the EMI requirements as specified in MIL-PRF-A3279454(CR) or MIL-PRF-49425. | |||
** Reliability: the assembly shall have a minimum mean time to failure of not less than 12,500 hours (2,500 hours accelerated) | |||
{| class="wikitable" | |||
|+Spot spec | |||
!Size in inches, at zone | |||
!1 | |||
!2 | |||
!3 | |||
|- | |||
|0.009 or larger | |||
|0 | |||
|0 | |||
|0 | |||
|- | |||
|0.006 to 0.009 | |||
|0 | |||
|0 | |||
|1 | |||
|- | |||
|0.003 to 0.006 | |||
|0 | |||
|0 | |||
|2 | |||
|} | |||
{| class="wikitable" | |||
|+End-of-life specs (threshold specs at 12,500h) | |||
!Requirement | |||
!Acceptance level | |||
|- | |||
|Luminance gain at 2x10^-6 fc | |||
|35k to 95k fL/fc | |||
|- | |||
|EBI | |||
|2.5 | |||
|- | |||
|SNR | |||
|23 minimum | |||
|- | |||
|Center resolution | |||
|64lp/mm minimum | |||
|- | |||
|Bright-light level center res. | |||
|36lp/mm minimum | |||
|- | |||
|Useful cathode diameter | |||
|17.5mm minimum | |||
|- | |||
|Output brightness uniformity | |||
|Within normal spec | |||
|- | |||
|Screen quality | |||
|Within normal spec | |||
|} | |||
=== MX-10160GS === | === MX-10160GS === | ||
Revision as of 11:55, 10 January 2023
MX-10160 is a specification for image intensifier tubes for the United States military.
The designation is often used to refer to the physical format of the tube described inside of the specification, as all iterations of the specification reuse the same format to facilitate backwards compatibility.
This format, together with the sibling MX-11769 format, are the most common formats both in military and civilian applications as of today.
Format
Other names commonly used to refer to the format are:
- Small Anvis (because it was developed for AN/AVS-6 binoculars)
- 18 mm (because of the diameter of the core)
- 37 mm (because of the diameter of the tube)
Tubes of this format utilize a fiber twist to invert the intensified image, making the lens system of compatible oculars much simpler.
The format does not support manual gain. The later introduced sibling MX-11769 format as well as the gain contact subformat later added that missing feature.
Gain Contact Subformat
A subtype of the MX-10160 format introduced a third electrical contact between the two power contacts. The housing can then connect the negative (ground) contact and the new gain contact through a potentiometer (usual value: 50 kΩ). The gain is inverse to the selected resistance of the potentiometer. Tubes of this type can be made backwards compatible with housings designed for the original MX-10160 format by adding a thin wire between the aformentioned contacts on the tube. The image intensifier manufacturers Photonis and Katod use this format for some of their manual gain image intensifiers.
Devices
The table below lists all devices using MX-10160 image intensifier tubes for which a page exists on this wiki.
| Housing Type | Manufacturer | Mount | |
|---|---|---|---|
| ACT DTNVG | Binocular | ACTinBlack | Wilcox Dovetail |
| ACT DTNVS | Binocular | ACTinBlack | Wilcox Dovetail |
| AN/AVS-9 | Binocular | Elbit Systems Of America | Ball Detent |
| Argus Panoramic Night Vision Goggles | Panoramic | Argus | Wilcox Dovetail |
| Fenn NG700D | Binocular | Fenn Night Vision Limited | Proprietary |
| GPNVG-18 | Panoramic | L3Harris | Wilcox Dovetail or Ball Detent |
| LLI Aeternus | Binocular | Low Light Innovations | Wilcox Dovetail |
| MUM-14 | Monocular | Nivisys Industries LLV | Mini Rail |
| RPNVG | Panoramic Binocular | AB NightVision Inc | Wilcox Dovetail |
| Ruggedized Night Vision Goggle (RNVG) | Binocular | AB NightVision Inc | Wilcox Dovetail |
| Troya Ninox Pro | Binocular | Troya Tech Defense Ltd | Wilcox Dovetail |
Iterations
MX-10160/AVS-6
The original MX-10160/AVS-6 specification was introduced in 1989 in the MIL-I-49428 specification. [1]
It consists of many requirements that designated image intensifier tubes had to meet as well as how those requirements should be tested.
The specification was cancelled in 1997 in favor of later iterations.
Key Specifications
Below is an incomplete list of key specifications that the image intensifiers have to meet.
- 18mm microchannel wafer
- minimum useful photocathode and phosphor screen diameter of 17.5 mm
- maximum weight of 85 grams
- phosphor screen type P-20
- image inversion
- resistance to shocks of at least 75 G's
- equivalent background input of 2.5 * 10-11 lumens/cm2
- maximum luminance gain
- between 20.000 and 35.000 at 2 x 10-6 footcandles
- between 3.500 and 10.500 at 2 x 10-4 footcandles
- minimum signal-to-noise ratio of 16.2
- minimum resolution of 36 line pairs per millimeter (lp/mm)
- minimum high light resolution of 5 lp/mm (at 20 footcandles)
- modular transfer function at 8 x 10-4 footcandle:
- 83% MTF at 2.5 lp/mm
- 58% MTF at 7.5 lp/mm
- 28% MTF at 15.0 lp/mm
- 8% MTF at 25.0 lp/mm
- mean time to failure of minimum 7500 hours (minimum 1500 hours under accelerated conditions[2])
Some further specifications include:
- stability and uniformity of output brightness
- ion barrier film quality
- photocathode sensitivity
- burn-in / environmental stress screening
- vibration
- resonance search / resonance dwell / cycling
- temperature ranges / temperature cycling
- compatibility with the ANVIS monocular assembly
- reverse polarity protection
- resistance to bright lights
- allowable dark & bright spots
- veil glare
- image alignment
- electromagnetic interference
- assembly quality
- chicken wire
MX-10160A
http://www.transaeroinc.com/upload/product/l3_mx10160a.pdf
MX-10160B
MX-10160C
- MIL-PRF-A3279602B (17 October 2003)
- P-43 or equivalent phosphor
- Low distortion fiber optic output, +-1 deg image inversion
- Minimum specs:
- 28 SNR
- 64lp/mm resolution (45lp/mm high light resolution)
- 2200uA/lm photocathode sensitivity
- 240mA/W at 830nm
- 120mA/W at 880nm
- max EBI 2.5
- gain 50k to 80k fL/fc
- Image alignment offset max 0.006 inch
- Halo: early models max halo 0.70mm, later models with revised spec max 0.85mm
- Electromagnetic interference (EMI): The assembly, when properly incorporated within a certified AN/AVS-6 system shall comply with the EMI requirements as specified in MIL-PRF-A3279454(CR) or MIL-PRF-49425.
- Reliability: the assembly shall have a minimum mean time to failure of not less than 12,500 hours (2,500 hours accelerated)
| Size in inches, at zone | 1 | 2 | 3 |
|---|---|---|---|
| 0.009 or larger | 0 | 0 | 0 |
| 0.006 to 0.009 | 0 | 0 | 1 |
| 0.003 to 0.006 | 0 | 0 | 2 |
| Requirement | Acceptance level |
|---|---|
| Luminance gain at 2x10^-6 fc | 35k to 95k fL/fc |
| EBI | 2.5 |
| SNR | 23 minimum |
| Center resolution | 64lp/mm minimum |
| Bright-light level center res. | 36lp/mm minimum |
| Useful cathode diameter | 17.5mm minimum |
| Output brightness uniformity | Within normal spec |
| Screen quality | Within normal spec |
MX-10160GS
MX-10160WG
MX-10160FG
References
- ↑ http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-I/MIL-I-49428_53852/
- ↑ Accelerated conditions differ only in shorter on-off cycles and more frequent temporary increases in input illumination.
