Three products based on VCSEL chips are developed for intelligent driving Lidar and driver monitor system. The line beam products used for long-distance detection achieved a 0.1°horizontal divergence angle, 23° vertical divergence angle, and the vertical beam uniformity more than 80%. For the area beam products used in medium and short distance detection, has achieved the field of view 125°×25°. For the super wide field of view area beam product, can applied in driver monitor system, the FOV is 160°×120°. These three products all have excellent performance in a wide temperature range (- 40 degrees centigrade ~ 110 degrees centigrade).
Due to the maturity of VCSEL supply chain promoted by the VCSEL applications in smart phones, and the increasing peak power of multi-junction VCSEL chip,VCSELs are considered to have great advantages and potential as the transmitter light sources of automotive low-cost LIDAR devices. Here we introduce a kind of VCSEL line-beam module with unique optical shaping design for LiDAR applications. The module has a uniform line beam with a peak power larger than 200W, a pulse width of 4ns, a divergence angle of 0.12° @ 1/e2, and the vertical axis intensity uniformity is better than 80%. The experimental data showed that over a wide temperature range from - 40 °C to 110 °C the power variation of the line beam module is less than 20%, the variation of horizontal divergence angle is less than 5%, and the temperature drift coefficient is 0.066nm/°C, which greatly reduces the performance requirements of the receiver detector for the Lidar system. In addition, we introduce a prototype of new line-beam modules with peak power higer than 1000W we are developing, which can meet further requirement of long-distance LiDAR system.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.