Conoscopes
A well-established tool from display technology for examining light intensity distribution, the conoscope achieves truly exceptional results when testing LIDAR sensors in advanced driver assistance systems. Our innovative conoscope lenses offer a new level of possibilities.
Features and Benefits
Precise Beam Guidance and Minimal Aberration
Our conoscope lenses are designed for precise beam guidance and minimal pupil aberration across the entrance pupil. This ensures that in LIDAR systems, the corresponding angles of the transmitter and receiver units actually hit the camera at the same place.
Field of view vs. sensor format
The entrance pupil and the angle range determine the physical quantity Étendue, also known as the light-gathering power. Without loss of light within the conoscope, this is a conserved quantity. When selecting possible sensors, it is important to consider that the selection of a sensor size already determines the acceptance angle and thus the image-side numerical aperture as well as the complexity of the conoscope.
External Illumination of the LIDAR Sensor System
The use of suitable external illumination of the LIDAR sensor allows the angles covered by LIDAR radiation to be checked by the conoscope, while simultaneously visualizing the angles actually observed by the associated LIDAR receiver unit (e.g., a SPAD array). This allows us to verify the overlap between the transmitting and receiving fields of view.
Convincing to Use
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Typical Specifications
| Parameter | Value |
|---|---|
| Angular resolution | 0.04° |
| Field of view | +/- 20° |
| Aperture | 40 mm |
| F-number | f/1.6 |
| Sensor format | Medium format |
| Wavelength | 850 – 1550 nm |
| Working distance | 20 – 50 mm |
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