Introduction
• Precision molded LWIR lenses using chalcogenide glass
High‐volume, cost effective manufacturing
Optimized for the 8~12 um wavelength range
• High performance LWIR lenses
FL 19 mm, f/1.03 lens
Use of diffractive‐aspheric lens
Ultralight, wide‐angle, passively athermalized LWIR lens
• Suitable for use with VGA and qVGA detectors and smaller
• Applications and capabilities
Thermal imaging and thermography
Automotive vision enhancement
Optical specifications
• Focal length : 19 mm
• Aperture‐based f‐number : f/1.03
• Maximum image circle : 8.56 mm
• Waveband : 8~12 um
• Focus range : 2.4 m to infinity
• Transmittance (average@waveband) : > 95 % (AR coating) / > 90 % (DLC coating)
• Field of view (FOV)
Sensor array |
Pixel size (um) |
FOV (deg) |
H |
V |
D |
640 X 480 |
17 |
32.4 |
24.6 |
40 |
12 |
23 |
17.5 |
28.8 |
384 X 288 |
17 |
20 |
15 |
24.6 |
12 |
14 |
10.6 |
17.5 |
320 x 240 |
17 |
16.5 |
12.5 |
20.6 |
12 |
11.7 |
8.8 |
14.6 |
Note : Each lens is optimized for a specific detector format represented by bold values.
This table shows values for other compatible detector formats with non‐optimal performance.
• Resolution (MTF Performance)
Temp.(°C) |
MTF* (%; 30 lp/mm) |
0.0F |
0.8F |
1.0F |
+20 °C |
61.2 |
51.6 |
38.8 |
• Distortion
Sensor |
Distortion (%) |
0.0F |
0.8F |
1.0F |
384 x 288, 17 um |
0.0 |
‐0.27 |
‐0.5 |
Mechanical specifications
• Dimension
• Lens mount : Threaded (M25 x P0.5)
• Weight : 32 g
Environmental specifications
• Operating temperature : ‐40 °C ~ +85 °C
• Storage temperature : ‐57 °C ~ +105 °C