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

assembly-6-stackHR_x800NoShadow

Product Specifications

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

 

Ultralight Objective Assembly

assembly-4-stackHR_x800NoShadow

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

 

RPO 9.1mm LWIR Assembly

91IRAssembly_x800-1
IrAssembly_x800-1



Precision Molded Chalcogenide Lenses



Glass Filled
Polycarbonate Housing



Compact & Lightweight

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%

 

Key Features

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 chalcogenide lenses
  • 20% glass-filled Black Polycarbonate Housing
  • Threaded interface enables adjustable focus

Interested?

Request a product brochure

If you are interested in learning how RPO's Ultralight Night Vision Optics may be a fit for your application, complete the form to request additional information and learn more about performance data.

assembly-4-stackHR_x800NoShadow
assembly-6-stackHR_x800NoShadow

Request Product Brochure