4-channel LIDAR laser

Dimensions 8 mm x 5 mm
Peak optical output 85 W at 30 A per channel
Wavelength 905 nm
Pulse length < 5 ns
Operating voltage 24 V

The overall lidar system covers 120 degrees in the horizontal plane, with 0.1 degree of resolution, and 20 degrees in the vertical plane, with 0.5 degree of resolution. In the light of day, it should detect cars from at least 200 meters away, and pedestrians at 70 meters out.

The MEMS chip can operate at up to 2 kilohertz

The company says test samples will be available in 2017, and that commercial models could arrive in 2018.

With mass production, the price should drop to around 40 Euros (US $43.50)

http://spectrum.ieee.org/cars-that-think/transportation/sensors/osr...

http://www.osram-group.de/en/media/news/press-releases/pr-2016/07-1...

Views: 5003

Comment by Global Innovator on November 18, 2016 at 4:54pm

Good point @Laser Developer,

since you exactly developed Lidar on your own.

What is Lidar beam divergence in case of your equipment ?

Since none data on Lidar beam divergence have been disclosed by Osram, or it's too early to guess since project is under development, general estimate is published by Lidar wiki

http://wiki.gis.com/wiki/index.php/LIDAR

"

Beam divergence Unlike a true laser system, the trajectories of photons in a beam emitted from a LIDAR instrument deviate slightly from the beam propagation line (axis) and form a narrow cone rather than the thin cylinder typical of true laser systems. The term “beam divergence” refers to the increase in beam diameter that occurs as the distance between the laser instrument and a plane that intersects the beam axis increases. Typical beam divergence settings range from 0.1 to 1.0 millirad. At 0.3 millirad, the diameter of the beam at a distance of 1000 m from the instrument is approximately 30 cm. Because the total amount of pulse energy remains constant regardless of the beam divergence, at a larger beam divergence, the pulse energy is spread over a larger area, leading to a lower signal-to-noise ratio.

"

"

the diameter of the beam at a distance of 1000 m from the instrument is approximately 30 cm

"

so 6cm at a distance of 200 m

or 2 cm at a distance of 70 m

--

"

So at distance of 70 m, out Lidar can scan 1,200 individual points within 242,48 m long horizontal line segment

giving spatial horizontal resolution of 0.20 m

"

giving spatial horizontal resolution of 0.20 m +/- 0.02 m  at a distance of 70m

"

At a distance of 200 m, individual scan points are separated by distance of 0.5 m

so a pedestrian can be missed at a distance of 200 m if not facing directly to Lidar.

"

horizontal , linear separation at a distance of 200m : 0.5m +/- 0.06m (error due to beam divergence)

not bad since the above are general estimates only

and

"

so a pedestrian can be missed at a distance of 200 m if not facing directly to Lidar.

"

and the above looks to be still true, not affected by Lidar beam divergence (error)

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