Conoscopes
A tool established in display technology for examining light intensity distribution, the conoscope, performs truly exceptional work in the testing of LIDAR sensors in advanced driver assistance systems. Our innovative conoscope lenses open up completely new possibilities.
Features and Benefits
Precise Beam Guidance and Minimal Aberration
Our conoscope objectives are characterized by precise beam guidance and minimal pupil aberration across the entrance pupil. This ensures that the corresponding angles of the transmitter and receiver units in LIDAR systems actually hit the camera at the same location.
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
With the help of a suitable external illumination of the LIDAR sensor, the angles covered by LIDAR radiation can be checked through the conoscope and at the same time the angles actually observed by the associated receiver unit of the LIDAR (e.g. a SPAD array) can be visualized. This allows you to check an overlap between the transmit and receive fields of view.
Convincing to Use
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 |