TY - JOUR
T1 - New scheme of LiDAR-embedded smart laser headlight for autonomous vehicles
AU - Chang, Yung Peng
AU - Liu, Chun Nien
AU - Pei, Zingway
AU - Lee, Shu Ming
AU - Lai, Yeong Kang
AU - Han, Pin
AU - Shih, Hsing Kun
AU - Cheng, Wood Hi
N1 - Publisher Copyright:
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
PY - 2019/9/30
Y1 - 2019/9/30
N2 - A new scheme of LiDAR-embedded smart laser headlight module (LHM) for autonomous vehicles is proposed and demonstrated. The LiDAR sensor was fabricated by LeddarTech with the wavelength of 905-nm, whereas the LHM was fabricated by a highly reliable glass phosphor material that exhibited excellent thermal stability. The LHM consisted of two blue laser diodes, two blue LEDs, a yellow glass phosphor-converter layer with a copper thermal dissipation substrate, and a parabolic reflector to reflect the blue light and the yellow phosphor light combined into white light. The LHM exhibited a total output optical power of 9.5 W, a luminous flux of 4,000 lm, a relative color temperature of 4,300 K, and an efficiency of 421 lm/W. The high-beam patterns of the LHMs were measured to be 180,000 luminous intensity (cd) at 0° (center), 84,000 cd at ± 2.5°, and 29,600 cd at ± 5°, which met the ECE R112 class B regulation. The low-beam patterns also satisfied the ECE R112 class B regulation as well. Integrating the signals received from the Lidar detection and CCD image by a smart algorithm, we demonstrated the generation of smart on/off signals for controlling the laser headlights. The recognition rate of the objects was evaluated to be more than 86%. This novel LiDAR-embedded smart LHM with the unique highly reliable glass phosphor-converter layer is favorable as one of the most promising candidates for use in the next-generation high-performance autonomous vehicle applications.
AB - A new scheme of LiDAR-embedded smart laser headlight module (LHM) for autonomous vehicles is proposed and demonstrated. The LiDAR sensor was fabricated by LeddarTech with the wavelength of 905-nm, whereas the LHM was fabricated by a highly reliable glass phosphor material that exhibited excellent thermal stability. The LHM consisted of two blue laser diodes, two blue LEDs, a yellow glass phosphor-converter layer with a copper thermal dissipation substrate, and a parabolic reflector to reflect the blue light and the yellow phosphor light combined into white light. The LHM exhibited a total output optical power of 9.5 W, a luminous flux of 4,000 lm, a relative color temperature of 4,300 K, and an efficiency of 421 lm/W. The high-beam patterns of the LHMs were measured to be 180,000 luminous intensity (cd) at 0° (center), 84,000 cd at ± 2.5°, and 29,600 cd at ± 5°, which met the ECE R112 class B regulation. The low-beam patterns also satisfied the ECE R112 class B regulation as well. Integrating the signals received from the Lidar detection and CCD image by a smart algorithm, we demonstrated the generation of smart on/off signals for controlling the laser headlights. The recognition rate of the objects was evaluated to be more than 86%. This novel LiDAR-embedded smart LHM with the unique highly reliable glass phosphor-converter layer is favorable as one of the most promising candidates for use in the next-generation high-performance autonomous vehicle applications.
UR - https://www.scopus.com/pages/publications/85072711784
U2 - 10.1364/OE.27.0A1481
DO - 10.1364/OE.27.0A1481
M3 - 文章
C2 - 31684500
AN - SCOPUS:85072711784
SN - 1094-4087
VL - 27
SP - A1481-A1489
JO - Optics Express
JF - Optics Express
IS - 20
ER -