RPO Ultralight™ Night Vision Optics
THE MOST TRUSTED NAME IN NIGHT VISION OPTICS™
RPO Offers the world's lightest night vision lens assemblies for leading commercial night vision manufacturers. With unmatched precision and resolution, RPO's Ultralight™ Night Vision Assemblies provide the ultimate competitive advantage for an industry-leading image intensified night vision system.
The World's Lightest Night Vision Optics
Proven Performance
Glass & Polymer Hybrid
RPO 18mm Ultralight Night Vision Optical Lens Assemblies
Ultralight Eyepiece Assembly
Product Specifications
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RPO Part Number:
Eye Relief: Weight: EFL: Flange Focal Distance: Exit Pupil Diameter: Field of View: Diopter Focus: Transmission: Distortion: Immersion: |
5A0574
25mm +0/-0.2mm
<= 24 grams
27.03 +/- 0.5mm
10mm + 0.28mm/-0.42mm
>=14mm on axis
40.0° +/- 1° for a 18mm image format
+2 to -6 diopters at 25mm eye relief*
>=85% weighted avg. from 400-680nm
-8%, +/- 0.5% at semi-field angle of 20°
20 meters for not less than 2 hours
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Ultralight Objective Assembly
Product Specifications
|
RPO Part Number:
Weight: EFL: Flange Focal Distance: F-Number: Field of View: Relative Illumination: Distortion: Immersion: |
5A0566
<= 38 grams
27.03 +/- 0.5mm
no less than 1.0mm
<= 1.23
40.0° +/- 2° for a 17.5mm image format
>=40% of the on-axis illumination
-8%, +/- 0.5% at semi-field angle of 20°
20 meters for not less than 2 hours
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RPO 9.1mm LWIR Assembly
Precision Molded
Glass Lenses
Glass Filled
Polycarbonate Housing
Compact & Lightweight
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Optical Performance for 320 x 240 / 12µm
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Horizontal FOV Various Detector Sizes
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Mechanical Parameters
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Key Features
| PARAMETER | NOTES | DESIGN VALUE |
| MTF - min Sag/Tan at 41.6cyc/mm | Diffraction Limited (Ref. only) On-axis VFOV HFOV Corner |
46.2% 44.3% 43.5% 36.8% 27.5% |
| EFL | Magnification Based | 9.1mm |
| F/# | Aperature-based | 1 |
| Field of View | Vertical Horizontal Diagonal (corner) |
18.3 Deg. 24.5 Deg. 30.8 Deg. |
| Relative Illumination | At HFOV At Corner Field |
95% 92% |
| Distortion | At HFOV At Corner Field |
-2.1% -3.4% |
| Fixed-Focus Object Range | Range for 10% MTF drop w/o refocus | 5.0m to Infinity |
| Athermal Temp Range | Range for 10% MTF drop w/o refocus | -40 to +65 degC |
| Operating Waveband | LWIR Thermal Waveband | 8-12µm |
| Transmission | HEAR coated witness samples (8-12µm) | >95% |
RESOLUTION |
| 160x120 | 320x240 | 384x288 | 640x480 | 1024x768 | |
| PIXEL SIZE | |||||
| 34µm | 35.1 | 82.6 | N/A | N/A | N/A |
| 25µm | 25.6 | 53.5 | 67.6 | N/A | N/A |
| 17µm | 17.3 | 35.1 | 42.6 | 82.6 | N/A |
| 12µm | 12.2 | 24.5 | 29.6 | 51.0 | N/A |
| 10µm | 10.2 | 20.4 | 24.5 | 41.7 | 74.3 |
| PARAMETER | NOTES | DESIGN VALUE |
| Height | Front to back lens assembly | 9.627mm |
| Thread Interface | Lens assembly outer thread | M14 x 0.5 |
| Working Distance to Image Plane (FPA) | Assumed 0.56mm Si window, nominal focus at infinity | 6.641mm |
| Max Exposure Temp | Storage/post-processing | 140 deg C |
OPTICAL
- 9.1mm ELF, F/1.0 Lens
- 24.5 deg HFOV on a 320 x 240/12µm detector
- Two-element design
- Utilizes aspheric and diffractive technologies
- High Efficiency AR coating for LWIR 8-12µm
- Optically Athermalized using Classic-6 material
MECHANICAL
- Small size and weight
- Precision molded chalcogenide lenses
- 20% glass-filled Black Polycarbonate Housing
- Threaded interface enables adjustable focus
Optical Performance for 320 x 240 / 12µm
| PARAMETER | NOTES | DESIGN VALUE |
| MTF - min Sag/Tan at 41.6cyc/mm | Diffraction Limited (Ref. only) On-axis VFOV HFOV Corner |
46.2% 44.3% 43.5% 36.8% 27.5% |
| EFL | Magnification Based | 9.1mm |
| F/# | Aperature-based | 1 |
| Field of View | Vertical Horizontal Diagonal (corner) |
18.3 Deg. 24.5 Deg. 30.8 Deg. |
| Relative Illumination | At HFOV At Corner Field |
95% 92% |
| Distortion | At HFOV At Corner Field |
-2.1% -3.4% |
| Fixed-Focus Object Range | Range for 10% MTF drop w/o refocus | 5.0m to Infinity |
| Athermal Temp Range | Range for 10% MTF drop w/o refocus | -40 to +65 degC |
| Operating Waveband | LWIR Thermal Waveband | 8-12µm |
| Transmission | HEAR coated witness samples (8-12µm) | >95% |
Mechanical Parameters
| PARAMETER | NOTES | DESIGN VALUE |
| Height | Front to back lens assembly | 9.627mm |
| Thread Interface | Lens assembly outer thread | M14 x 0.5 |
| Working Distance to Image Plane (FPA) | Assumed 0.56mm Si window, nominal focus at infinity | 6.641mm |
| Max Exposure Temp | Storage/post-processing | 140 deg C |
Horizontal FOV Various Detector Sizes
RESOLUTION
| 160x120 | 320x240 | 384x288 | 640x480 | 1024x768 | |
| PIXEL SIZE | |||||
| 34µm | 35.1 | 82.6 | N/A | N/A | N/A |
| 25µm | 25.6 | 53.5 | 67.6 | N/A | N/A |
| 17µm | 17.3 | 35.1 | 42.6 | 82.6 | N/A |
| 12µm | 12.2 | 24.5 | 29.6 | 51.0 | N/A |
| 10µm | 10.2 | 20.4 | 24.5 | 41.7 | 74.3 |
Key Features
OPTICAL
- 9.1mm ELF, F/1.0 Lens
- 24.5 deg HFOV on a 320 x 240/12µm detector
- Two-element design
- Utilizes aspheric and diffractive technologies
- High Efficiency AR coating for LWIR 8-12µm
- Optically Athermalized using Classic-6 material
MECHANICAL
- Small size and weight
- Precision molded glass lenses
- 20% glass-filled Black Polycarbonate Housing
- Threaded interface enables adjustable focus
Interested?
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