Lidars for Automotive and Beyond
Dec 05, 2022 Dr Xiaoxi He
Lidar, which refers to light detection and ranging, is a technology that has been adopted in various applications such as mapping, surveying, military, archaeology, agriculture, geology, industry, etc. Many use scenarios are already quite mature. Lidar has been talked about with increasing interest, largely from the popularity of autonomous vehicles and its potential in emerging industrial applications and robotics. Just within the automotive sector, the lidar for the automotive market is expected to grow to US$8.4 billion by 2023.
The History of Lidar
Lidar has existed for decades, and its development path has experienced four stages. It was developed not long after the invention of the laser around the 1960s. Its ranging function was developed for aerospace and defense purposes initially. Later lidars could also be used to measure angles and velocity. Commercial and industrial lidars rose in the 1980s, and the 1990s benefited from the development of diode systems. A single-line scanning system enables lidars to be used in other applications. In addition, GPS, with accuracy to centimeter level, promoted the combination of lidars and positioning systems. These areas of progress have allowed lidars to be deployed in industrial and early-stage autonomous vehicle projects. It was not until the 2000s that lidars started to be applied in commercial, automotive applications. Since the commercial production of the first lidar in 2017, an increasing number of players have focused on automotive applications, especially autonomous vehicles. From 2020 onwards, with the autonomy levels moving towards L3, the lidar industry has also welcomed its speedy progression. Lidars have received huge investments and are moving towards chips and arrays with better performance.
Lidar development path. Source: IDTechEx
Lidar for Automotive Autonomy
Autonomy is another big trend after electrification in the automotive sector. Automotive autonomy can potentially change our lifestyle and also offer huge business opportunities for existing and emerging technologies. An important part of autonomy is sensing and recognition. Sensors such as cameras, ultrasonic systems, and radars can already provide useful information for this purpose. However, none of them are perfect. For instance, a camera offers color and high-definition images but suffers from poor depth information and can be easily affected by the sun. An ultrasonic system is very cheap but has a very short detection range. A radar is quite robust in bad weather conditions but gives a very poor resolution. A radar's typical 2-3° angular resolution makes most object detection challenging. For example, 2° at 100m cannot distinguish a distance larger than 3.4m.
On the other hand, lidar can compensate for the disadvantages of other sensors. For instance, it can provide high resolution (e.g. 0.1°) and information not easily affected by the light condition.
Typical object dimensions. Source: IDTechEx
The innovation of lidar beam steering technologies made 3D landscape mapping and scanning easier, enabling machines, including automotive and robots, to acquire a precise 3D map of the world with depth information. This function of 3D lidar can make automotive reach higher autonomy, offering complementary information and providing redundancy to realize better safety. The huge demand and investment of the automotive industry can also speed up lidar development and cost reduction. This helps them be cheaply manufactured and widely adopted in larger application areas with potential huge quantities.
Opinions on which sensors to include in an ADAS/AV system are controversial as they involve different cost structures. In addition, more sensors can also generate confusing information, leading to a more difficult decision-making process. However, as time goes by, more OEM and Tier-1 companies believe lidar should be included in the sensor suite for redundancy purposes. As the AV evolves to higher levels of autonomy, this demand becomes more obvious.
Minimum hardware requirements for ADAS/ AV. Source: IDTechEx
Competitive Technology Landscape
The huge demand for vehicles and high investments from the automotive industry have attracted tremendous players to work in the lidar area. Lidar is still relatively immature with an unestablished supply chain, a high price point, and an unclear market landscape that is very different from cameras or radars. In the lidar technological area, IDTechEx has segmented the technology analysis into four areas: measurement process, emitter, beam steering mechanism, and receiver.
Four important technology choices in designing or selecting a 3D lidar module. Source: IDTechEx
There are further details, such as the addition of wavelength choice and optical system selection. The technology landscape is cluttered with numerous options for every component in a lidar system. However, not all technologies have equal opportunities. Some technology combinations are easier to commercialize, while some tend to fail. For instance, FMCW usually works with 1550nm wavelength, VCSEL may perform better with Flash lidar beam steering than EEL, and MEMS have more difficulty combining with FMCW, etc. Even the hardware technology is a result of complicated sub-technology combinations, not to mention when algorithms, software, and system solutions are taken into consideration. The rapid development of different technologies is making the lidar market complicated.
Possible lidar technology combinations. Source: IDTechEx
Understanding relevant lidar technologies can help players to realize a commercial product with acceptable performance, pass the automotive grade, and potentially lead to a cheaper manufacturing cost. Choosing the wrong technological combination, however, can result in the opposite.
Future Opportunities for Lidar Components
The lidar development provides opportunities to various industries and players within the supply chain. Lidar hardware can be simplified as a combination of a few major component modules. For example, beam steering mechanisms have attracted tremendous attention and innovations. They enable 3D scanning and determine the lidar reliability. However, equal attention should be given to transmitter and receiver modules as they will largely determine lidar performance and play an important role in further cost reduction. Control and processing modules, on the other hand, usually have higher technology barriers and can also offer space for price drops. Understanding the whole supply chain from materials, and components, to systems, can assist in better strategic decision-making.
Lidar component descriptions. Source: IDTechEx
Rapidly Evolving Business Landscape
The lidar market landscape is evolving rapidly:
- A few companies went public via SPAC merger.
- Ibeo filed for insolvency.
- Mobileye cruised into the public market.
- Argo AI collapsed.
- Numerous partnerships established between tier-1 and OEMs in various areas.
A selection of partnerships between automotive OEMs and Lidar tier-2 players. Source: IDTechEx
There are many more factors apart from technology that people should take into consideration when talking about commercialization. Financial support, cost, team, partnerships, supply chain building, regulations & policies, automotive grade, etc., are all important factors.
Already, there are a few vehicle models with lidars integrated and more to be integrated, although the current lidar adoption may not be mainly driven by performance. They generate interest from the public and provide practical data for both OEMs and lidar providers. The rapid cost reduction trend not only makes lidars possible for adoption within autonomous vehicle use scenarios but also helps them to be deployed in a wider range of applications.
Want to Learn More?
Following a period of dedicated research by expert analysts, IDTechEx published the report "Lidar 2023-2033: Technologies, Players, Markets & Forecasts", which offers unique insights into the global 3D lidar technology landscape and corresponding market. The report comprehensively analyzes 95 players developing 3D lidar for the ADAS and autonomous vehicles market. This includes a detailed assessment of technological innovations and market dynamics. While the market analysis and forecasts focus on the automotive industry, the technology analysis and company profiles also cover lidar for industrial automation, robotics, smart city, security, and mapping. Importantly, the report presents an unbiased analysis of primary data gathered via our interviews with key players. It builds on our expertise in the transport, electronics, and photonics sectors.
IDTechEx has focused on players who position themselves as automotive Tier-2 suppliers, with coverage of component suppliers and automotive OEMs. The report explores how lidar technology innovations affect lidar market segments' growth. In the technical analysis chapters, IDTechEx uses its experience in physics research to explain novel technical concepts to a non-specialist audience. Market forecasts are based on the extensive analysis of primary and secondary data combined with careful consideration of market drivers, restraints, and key player activities. The technology adoption roadmaps for six types of lidar in four types of level 3+ autonomous vehicles are evaluated to provide a balanced outlook on market opportunities.
The report answers important questions such as:
- What are the lidar technology choices available today, and how do these choices impact product development and positioning?
- What is the present status of each lidar technology and what are the future trends and opportunities?
- How is the lidar business landscape evolving in terms of the supply chain, efforts, and partnerships?
- How will each lidar market segment evolve in the short and long term?
For more information on technology benchmarking, business opportunity exploration, player activities tracking, and market analysis, please refer to IDTechEx's report, "Lidar 2023-2033: Technologies, Players, Markets & Forecasts", at www.IDTechEx.com/lidar.