ADAS & Autonomous Vehicle Engineering - April 2023 - 11

Sensors
Individual beams from either side's vertical cavity surface-emitting laser (VCSEL) array are received by specific
corresponding pixels on the single photon avalanche diode (SPAD).
SAIC. In January 2023, Mercedes-Benz and Luminar
announced a long-term partnership to put the company's
lidar in " a broad range " of vehicles starting in 2025.
The company projects that between 2026 and 2030,
there will be 1 million Luminar-equipped vehicles on
the road.
The Iris lidar, Luminar's top product, combines an
indium gallium arsenide sensor that the company says
is the most sensitive in the industry, with the highest
dynamic range, when paired with the company's own
ASIC. A lone 1550nm laser provides 1 million times
the energy of a 905nm emitter " while remaining
eye-safe, " the company says.
Interestingly, at CES Luminar CEO Austin Russell
announced that he wants to tread a path not normally
taken by suppliers. " We have moved from horsepower
to brain power, and from luxury to technology in the
minds of consumers, " he said. While most automotive
suppliers are happy to work as white label solutions,
Russell wants Luminar to become a coveted brand
among car shoppers.
Eitan Gertel, executive chairman of the board
for Luminar competitor Opsys Technologies, says his
company has produced the first truly solid-state lidar
with no moving parts that is reliable and affordable for
OEMs and suppliers. (Ouster/Velodyne also has a solidstate
system, its Velarray M1600, but it is meant for shorttravel/last-mile
delivery bots and industrial applications.)
Opsys' system consists of a central light detector
with two emitters on either side. The system scans at
Adasky's thermal camera can detect vehicles and objects
that can't be seen at night or in some weather conditions.
1,000 frames per second, and can 'see' out to 300 meters
(984 feet). Using a standard measure for lidar systems,
it can identify an object with only 10% reflectivity at
150 meters. Compared to human vision, Opsys' system
is about 40 times faster at object detection.
Its lidar unit can also be placed behind a windshield
or, potentially, in other places behind glass on a
vehicle. Current lidars have had trouble doing that due
to reflectivity, resulting in the ubiquitous lidar hump.
" Because ours has no moving parts, we can calibrate
for any imperfections in the glass, " Gertel said.
Regarding cost, lidar makers are reticent to talk
about their prices, which vary according to volume and
ADAS & AUTONOMOUS VEHICLE ENGINEERING
April 2023 11
Opsys
Chris Clonts

ADAS & Autonomous Vehicle Engineering - April 2023

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