Products
We are actively taking measures to improve product quality levels.
Applications
Why Hamamatsu?
Resources
Support
Our company
Investors
United States (EN)
Select your region or country.
LiDAR
LiDAR (Light Detection and Ranging) is a remote sensing technology that measures distance by irradiating a laser light on objects and catching the light reflected back with a photosensor. In recent years, great progress has been made towards realizing fully autonomous automobiles. LiDAR has high azimuth resolution, making it possible to find the distance, shape, and relative positions of surrounding vehicles, pedestrians, buildings, and other objects with high accuracy. This technology has attracted attention for its potential in various applications, including ADAS (Advanced Driver Assistance Systems) and AGV (Automatic Guided Vehicles).
Hamamatsu offers a variety of devices for time-of-flight (TOF) LiDAR, including pulsed laser diodes as light sources and Si APDs, InGaAs APDs, and MPPCs (SiPMs) as photosensors.
We also offer custom support for these devices, as well as various solutions for the frequency modulated continuous wave (FMCW) LiDAR concepts. These devices can be AEC qualified and registered to IMDS upon request, as well as comply to the ISO/TS 16949 quality management system.
Talk to Hamamatsu about your needs or requirements for TOF and FMCW LiDAR concepts.
Mechanism of TOF LiDAR
LiDAR for automobiles mainly uses the direct TOF method. This method calculates the distance by calculating the length of time for a light pulse to travel from its light source, be reflected off an object, and return to the sensor.
Relationship between light source / photosensor and wavelength
Comparison of photosensors
| Parameter | PIN photodiode | APD | MPPC® |
|---|---|---|---|
| Measurement distance | Short | Middle | Long |
| Readout circuit | TIA required | TIA required | Simple circuit design |
| Operation voltage | Up to 10 V | 100 to 200 V | Up to several tens of V |
| Gain | 1 | 10 to 100 | 105 |
| Temperature characteristics | Excellent | Fair | Good |
| Response speed | Good | Good | Excellent |
| Tolerance to background light | Excellent | Good | Good |
Recommended products for LiDAR designs
Light sources for TOF LiDAR
Hamamatsu offers multi-stack, edge-emitting laser diodes that have high light output power and a sharp light emission pattern, to enable the development of short to long range TOF LiDAR concepts.
- Higher peak power (up to >200 Watts) can be achieved with emission width from 70 µm to 360 µm and multi-stack laser designs
- High quality laser arrays (2-8 or more channels) with sharp NFP (near field pattern) and FFP (far field pattern) meets LiDAR's wide field-of-view needs
- Flexible packaging includes bare die, SMD, TO can and more
Talk to us about various custom chip and assembly possibilities tailored to the automotive or industrial LiDAR design needs.
Photodetectors for short range TOF LiDAR (<50 m)
This device features low voltage operation and small variation in characteristics with temperature changes, which allows easy handling. It is mainly used in short distance applications.
The S8558 is a 16-element Si PIN photodiode array in a ceramic chip carrier package suitable for surface mounting using solder reflow techniques.
Photodetectors for mid-range TOF LiDAR (100-150 m)
This Si APD has sensitivity to the emission wavelength of the LiDAR laser (905 nm). It is mainly used for medium to long distances.
This device integrates a Si APD and front-end IC. It occupies a smaller mounting area on the substrate compared to discrete semiconductors.
This device integrates a Si APD and front-end IC. It is capable of reading output from any one channel specified in the selection logic.
This device integrates a 16-channel Si APD array and front-end IC. It is capable of reading the output from all 16 channels simultaneously.
This is a surface mount type MPPC designed for automotive LiDAR applications that achieves high sensitivity and low afterpulses.
Photodetectors for long range TOF LiDAR (>150 m)
The G13176 series is a small near infrared detector available in a surface mount COB package.
InGaAs PIN photodiodes have large shunt resistance and feature very low noise.
This InGaAs APD (avalanche photodiode) has greatly reduced dark current over existing products due to the use of a new device structure and improved processing.
This is a surface mount type MPPC designed for automotive LiDAR applications that achieves high sensitivity and low afterpulses.
Recommended products for LiDAR system calibration, manufacturing, and testing
UV-LED light sources have high output and feature a proprietary air-cooling method.
The Laser-Driven Light Source or LDLS is an innovative light source developed by Energetiq Technology, Inc. in the US, which is a subsidiary of Hamamatsu Photonics K.K.
Related documents
Related videos
- Confirmation
-
It looks like you're in the . If this is not your location, please select the correct region or country below.
You're headed to Hamamatsu Photonics website for US (English). If you want to view an other country's site, the optimized information will be provided by selecting options below.
In order to use this website comfortably, we use cookies. For cookie details please see our cookie policy.
- Cookie Policy
-
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in this cookie policy. By closing the cookie warning banner, scrolling the page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.
Hamamatsu uses cookies in order to enhance your experience on our website and ensure that our website functions.
You can visit this page at any time to learn more about cookies, get the most up to date information on how we use cookies and manage your cookie settings. We will not use cookies for any purpose other than the ones stated, but please note that we reserve the right to update our cookies.
1. What are cookies?
For modern websites to work according to visitor’s expectations, they need to collect certain basic information about visitors. To do this, a site will create small text files which are placed on visitor’s devices (computer or mobile) - these files are known as cookies when you access a website. Cookies are used in order to make websites function and work efficiently. Cookies are uniquely assigned to each visitor and can only be read by a web server in the domain that issued the cookie to the visitor. Cookies cannot be used to run programs or deliver viruses to a visitor’s device.
Cookies do various jobs which make the visitor’s experience of the internet much smoother and more interactive. For instance, cookies are used to remember the visitor’s preferences on sites they visit often, to remember language preference and to help navigate between pages more efficiently. Much, though not all, of the data collected is anonymous, though some of it is designed to detect browsing patterns and approximate geographical location to improve the visitor experience.
Certain type of cookies may require the data subject’s consent before storing them on the computer.
2. What are the different types of cookies?
This website uses two types of cookies:
- First party cookies. For our website, the first party cookies are controlled and maintained by Hamamatsu. No other parties have access to these cookies.
- Third party cookies. These cookies are implemented by organizations outside Hamamatsu. We do not have access to the data in these cookies, but we use these cookies to improve the overall website experience.
3. How do we use cookies?
This website uses cookies for following purposes:
- Certain cookies are necessary for our website to function. These are strictly necessary cookies and are required to enable website access, support navigation or provide relevant content. These cookies direct you to the correct region or country, and support security and ecommerce. Strictly necessary cookies also enforce your privacy preferences. Without these strictly necessary cookies, much of our website will not function.
- Analytics cookies are used to track website usage. This data enables us to improve our website usability, performance and website administration. In our analytics cookies, we do not store any personal identifying information.
- Functionality cookies. These are used to recognize you when you return to our website. This enables us to personalize our content for you, greet you by name and remember your preferences (for example, your choice of language or region).
- These cookies record your visit to our website, the pages you have visited and the links you have followed. We will use this information to make our website and the advertising displayed on it more relevant to your interests. We may also share this information with third parties for this purpose.
Cookies help us help you. Through the use of cookies, we learn what is important to our visitors and we develop and enhance website content and functionality to support your experience. Much of our website can be accessed if cookies are disabled, however certain website functions may not work. And, we believe your current and future visits will be enhanced if cookies are enabled.
4. Which cookies do we use?
There are two ways to manage cookie preferences.
- You can set your cookie preferences on your device or in your browser.
- You can set your cookie preferences at the website level.
If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit www.aboutcookies.org, which contains comprehensive information on how to do this on a wide variety of desktop browsers.
5. What are Internet tags and how do we use them with cookies?
Occasionally, we may use internet tags (also known as action tags, single-pixel GIFs, clear GIFs, invisible GIFs and 1-by-1 GIFs) at this site and may deploy these tags/cookies through a third-party advertising partner or a web analytical service partner which may be located and store the respective information (including your IP-address) in a foreign country. These tags/cookies are placed on both online advertisements that bring users to this site and on different pages of this site. We use this technology to measure the visitors' responses to our sites and the effectiveness of our advertising campaigns (including how many times a page is opened and which information is consulted) as well as to evaluate your use of this website. The third-party partner or the web analytical service partner may be able to collect data about visitors to our and other sites because of these internet tags/cookies, may compose reports regarding the website’s activity for us and may provide further services which are related to the use of the website and the internet. They may provide such information to other parties if there is a legal requirement that they do so, or if they hire the other parties to process information on their behalf.
If you would like more information about web tags and cookies associated with on-line advertising or to opt-out of third-party collection of this information, please visit the Network Advertising Initiative website http://www.networkadvertising.org.
6. Analytics and Advertisement Cookies
We use third-party cookies (such as Google Analytics) to track visitors on our website, to get reports about how visitors use the website and to inform, optimize and serve ads based on someone's past visits to our website.
You may opt-out of Google Analytics cookies by the websites provided by Google:
https://tools.google.com/dlpage/gaoptout?hl=en
As provided in this Privacy Policy (Article 5), you can learn more about opt-out cookies by the website provided by Network Advertising Initiative:
http://www.networkadvertising.org
We inform you that in such case you will not be able to wholly use all functions of our website.
Close