OPTIKOS Modulation Transfer Function Measurement Instrument (MTF, USA) LensCheck LWIR
1. LensCheck: Primarily measures relatively small lenses. Applicable measurements: modulation transfer function (MTF), on/off axis; depth of focus (Through-Focus MTF); effective focal length and aperture (EFL and F-number); back focal length (BFL); astigmatism; field curvature; optical distortion; chief ray angle; encircled and ensquared energy; stray light (VGI, GSF), visible light, optional; transmission, visible light, optional; optical-axis offset/concentricity (Rotary Lens Mount/Boresighting Test), optional; relative illumination measurement, optional; thermal drift of lens performance parameters (Thermal Module), optional; axial chromatic aberration, visible light, optional, requiring a reflective collimator and an apochromatic objective; lateral chromatic aberration, visible light, optional, requiring a reflective collimator and an apochromatic objective.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Dimensions [Shared row in the system specification table] | H355mm；W762mm；L1219mm |
| Environmental Requirements [Shared row in the system specification table] | Best performance in a dark room |
| Refractive collimator effective focal length [Shorter effective focal length can be customized; shared system-specification row] | 355 millimeters |
| Refractive collimator clear aperture [Shared row in the system specification table] | 50 millimeters |
| Z-axis travel range [Linear-motor control] | 25 millimeters |
| Z-axis resolution [Linear-motor control] | 0.1 micrometers |
| X-axis travel range [Linear-motor control] | 25 millimeters |
| X-axis resolution [Glass optical encoder; linear-motor control] | 0.05 micrometers |
| Y-axis travel range [Manual control] | 12.5 millimeters |
| Optical lens platform off-axis rotation angle [Motor control] | ±105 ° |
| Optical lens platform resolution [Glass optical encoder] | 0.0001 degrees |
| Optical rail length [Self-centering optical lens mount] | 0.5 meters |
| Entrance pupil diameter of the lens under test | ≤50 millimeters |
| Image format size of the lens under test [Image-format diagonal] | ≤25 millimeters |
| Light-source module - video output | 14 bits |
| Focal length of the lens under test | 5-50 millimeters |
| F-number of the lens under test | f/20–f/1 |
| Maximum measurable spatial frequency | 60 lp/mm |
| Power Supply Requirements | DC supply DC1.6A, light source 2/1A |
| Light-source module | Uncooled microbolometer |
| Light-source module - format | 324×256 |
| Light-source module - spectral range | 7.5–15 micrometers |
| Light-source module - calibrated relay lens [Original string retained as supplied, without conjectural changes or splitting into numerical magnification] | 7.5x0，0.70NA |
Datasheet
Supplier Information
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