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⵪ԺҼԵػó LiDAR Ҵ硷شš - ѲѡҾ ǧҔ ҹ¹餹Ѻ
⵪ԺҼԵػó LiDAR Ҵ硷شš
ѲѡҾ “ǧ” ҹ¹餹Ѻ
 
Toshiba takes on the world’s smallest LiDAR
Improving the “Eyes” of Autonomous Driving

㹪ǧ˹觷ɷҹ ҹ¹餹ѺѲҨҡ§Ҿ·ȹ͹Ҥ繨ԧ ػó LiDAR (ػóǨѺѴдʧ ػóżҾ ǨѺ Ѵд) 繵ѺૹӤѭҧѺҹ¹餹Ѻ ෤չաùö¹ٷкѺ͹餹ѺдѺ дѺԴ͹ ⵪Ժ˹㹺ѷػó LiDAR ͧѺкѺ͹餹ѺдѺ
 
Over the past decade, autonomous driving has progressed from a vision of the future to reality. LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) is an essential sensor for automated driving. The technology is available in some luxury cars with Level 3 conditional driving automation. Toshiba is among the companies with a LiDAR that can handle Level 4 autonomous driving.

⵪ԺҼԵػó LiDAR Ҵ硷شš ѲѡҾ “ǧ” ҹ¹餹Ѻ
 
Ҿ 1: ػó LiDAR ͧ⵪ԺҾͧҾͧͧ觾ѲҢ
Figure 1: Toshiba’s LiDAR with two newly developed projectors
 
ҹҹ ⵪Ժ¶֧˹ҤӤѭ㹡þѲͧҾ좹ҴҽͷСõǨѺͧ LiDAR ͡Ŷ֧ 300 觹ѺзŷشšǨѺ¤´ͧҾ 1200x84 ԡ 繤´дѺ˹Ңͧصˡ ͡ҡػó LiDAR ѧѺѺͧҾٻẺǨѺҧ ѧػó LiDAR Ъ¢Ѻ͹ǧش˹觢 ǧҹ¹餹ѺСõǨçҧ鹰ҹ ֧ԴͧҧҧѹԵ Ǵǧ
 
⵪ԺҼԵػó LiDAR Ҵ硷شš ѲѡҾ “ǧ” ҹ¹餹Ѻ
 
Ҿ 2: Ҥ ѡԷʵԨ
ͧԺѵԡ IoT Edge ͧԺѵԡŵС
ٹԨоѲͧ ⵪Ժ ê
 
Figure 2: Akihide Sai, Senior Research Scientist,
IoT Edge Laboratory, Information and Communications Platform Laboratories,
Corporate Research & Development Center, Toshiba Corporation
 
ʹºͧѡŴŧҾҡդ§ҡ˵ءó¾ԺѵԵҧ ǹͧôǨ㹻ѨغѹѧբͨӡѴ㹡Ѵзҧ öǨѺѵҾԵѴਹ ѧջԷҾŧҾʧ ҧáк LiDAR ͧ⵪ԺöǨѺҾҧ ҧ·ѹ ѴԹ㹡âѺբ 駹»ʺóԺմҹػóá觵ǹ (semiconductor) ФǪҭҹ෤շȹʵ ⵪ԺҨ֧öǹ solid-sate LiDAR ѧ§öҾ跹ҹ
 
⵪ԺҼԵػó LiDAR Ҵ硷شš ѲѡҾ “ǧ” ҹ¹餹Ѻ
⵪ԺҼԵػó LiDAR Ҵ硷شš ѲѡҾ “ǧ” ҹ¹餹ѺҾ 3: ׹ѹҾҡػó LiDAR ԴͧҾͧͧ () դسҾաҪԴͧҾ ()

Figure 3: Higher image quality confirmed using LiDAR with two projectors (right) than one (left)
 
٪ѹͧ⵪ԺҤػó LiDAR öѺͧҾҴ觩ʧͧ ͧҾҹʧʹµʹǧ㹷ȷҧǡѹ ֧СõǨѺ Ըաùѧö͢ҴͧҾ 71 ١ȡૹ зػó LiDAR բҴ硴
 
͡ҡ ἧǧ÷ѹ·͡ẺѧŴҴἧǺ֧ 60 ºѺǵẺ͹˹¤ҹõԴ駪ǹԵ㹡µ˹ػóŹ

ػó LiDAR դѹҧԴѺҹ˹͹ѵѵ 繵ҴԺǴФҴҨաѧüԵ֧ 42 ҹ˹ 㹻վ.. 2573 駹⵪Ժ觨˹ػó LiDAR ҹ¹餹ѺСõǨçҧ鹰ҹԴ٧㹻էҳ .. 2566 оǨùػó LiDAR ͻपѹٻẺ ¹ ù ػóҹʹµҧ
 
 
Toshiba takes on the world’s smallest LiDAR - Improving the “Eyes” of Autonomous Driving

Over the past decade, autonomous driving has progressed from a vision of the future to reality. LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) is an essential sensor for automated driving. The technology is available in some luxury cars with Level 3 conditional driving automation. Toshiba is among the companies with a LiDAR that can handle Level 4 autonomous driving.

Toshiba has recently revealed significant advances in the new palm-sized laser projector unit that pushes LiDAR’s detection range out to 300m, the world’s longest with an industry-leading image resolution of 1200x84 pixels. It can be configured with flexible combinations of projector units to handle a variety of long-range and wide-angle detection applications. This new LiDAR will advance progress in many application areas, such as autonomous driving and infrastructure monitoring, and opens the way to exploring partnerships in other areas.

Road safety is often compromised by poor weather and risks from events or disasters. The current use of surveillance camera and radar have limitation in measuring distance, is weak in capturing objects in 3D clearly, and has poor performance under low light conditions. Toshiba LiDAR systems instantly and accurately detect road conditions and support decision-making on movement. With decades of experience in semiconductors and our expertise in optical technologies, Toshiba is capable of realizing solid-state LiDAR’s miniaturization while at the same time ensuring reliability and durable performance.

Toshiba’s solution is a LiDAR that can use multiple small projector units, the laser beam source. They all emit an eye-safe beam in the same direction, which increases the effective range. This approach also keeps down the LiDAR’s overall size with shrinking the volume of the projector unit to 71cm3. The innovative circuit design reduces the motor control board by 60% against the size of the previous prototype and uses know-how in 3D component mounting to reposition components and lenses.

LiDAR is closely associated with vehicle automation, a fast-growing market expected to reach 42 million units a year by 2030. Toshiba aims to commercialize LiDAR for autonomous driving and high-precision infrastructure monitoring in the fiscal year 2023, and look forward to exploring new applications in robots, drones, and security devices.

ǻЪѹ쩺Ѻ: 
For the full press release, click here: 
 

Toshiba’s New Palm-sized Projector Unit Pushes LiDAR’s Detection Range to 300m, the World’s Longest, with Industry-leading Image Quality

-Flexibility to combine multiple projectors allows customization of detection range and angle, realizes wide application from autonomous driving to infrastructure monitoring.-

18 March, 2022
Toshiba Corporation

TOKYO—Toshiba Corporation (TOKYO: 6502) has revealed major advances in shrinking the laser projector unit of its LiDAR to one quarter the size of the previous version released in June 2021. Using two of the new projector units, the new LiDAR is just 206cmin volume that can fit comfortably into the palm of the hand. Its range has been pushed out to 300m, the world’s longest(*1) with an industry-leading image resolution of 1200x84 pixels. It can be configured with flexible combinations of projector units to handle a variety of long-range and wide-angle detection applications. 

The new LiDAR will advance progress in Toshiba’s focus application areas, autonomous driving and infrastructure monitoring, and also opens the way to exploring partnerships in other areas, including robotics, drones and small security devices.

Figure 1: Toshiba’s LiDAR with two newly developed projectors.

Figure 1: Toshiba’s LiDAR with two newly developed projectors.

Toshiba initiated LiDAR research to advance autonomous driving and infrastructure resiliency. In addition to extending the range, with a wider viewing angle and better resolution, it had to make the LiDAR even smaller. However, there has long been a trade-off in LiDAR range and size against the requirement of an eye-safe laser. Akihide Sai, the Senior Research Scientist at Toshiba’s Corporate Research & Development Center behind the new LiDAR, explains the challenge: “To extend the range of a laser emitted by a single projector, you have to increase its intensity. If you do that, you also have to increase its emission width, to avoid a beam that focuses on a small spot and is strong enough to impair eyesight. The problem is, a wider emission requires a larger projector.”

Toshiba’s solution is a LiDAR that can use multiple small projector units, the laser beam source. They all emit an eye-safe beam in the same direction, which increases the effective range. This approach also keeps down the LiDAR’s overall size.

The advances that realized the new LiDAR started with shrinking the volume of the projector unit to 71cm3. This was achieved with an innovative circuit design that reduced the motor control board by 60% against the size of the previous prototype, and using know-how in 3D component mounting to reposition components and lenses. 

Figure 2: Overview of Toshiba’s solution to overcome the trade-off in LiDAR size and range against the requirement of an eye-safe laser.

Figure 2: Overview of Toshiba’s solution to overcome the trade-off in LiDAR size and range against the requirement of an eye-safe laser.

Figure 3: Shrinking projector size with a smaller motor control board, and by using 3D mounting technology to position components and lenses.

Figure 3: Shrinking projector size with a smaller motor control board, and by using 3D mounting technology to position components and lenses.

The development team also drew on Toshiba’s proprietary motor control technology to come up with a triple control loop for the rotation speed, rotation angle and current of the polygonal mirrors in multiple projectors. This secures high accuracy synchronization, and the deviation angle of the mirrors is only 0.02 degrees or less. 

In field tests, Toshiba confirmed that a LiDAR with two of the new projectors has a range of 300m, 1.5 times further than its previous prototype with a single projector. In very bright sunlight conditions, 100,000 lux, the two-projector LiDAR also showed much more detail in the scanned image than its predecessor.

Figure 4: A LiDAR with two of the new projectors has reached a range of 300m.

Figure 4: A LiDAR with two of the new projectors has reached a range of 300m.

Figure 5: Higher image quality confirmed using LiDAR with two projectors (right) than one (left).
Figure 5: Higher image quality confirmed using LiDAR with two projectors (right) than one (left).

The flexibility gained by combining multiple projectors, and fine-tuning control of the emitted laser, opens the way to customizing the LiDAR for long-range and wide-angle scanning. This will extend use to areas such as automatic guided vehicles, which must combine wide-angle views with long-range route monitoring.

Figure 6: LiDAR of various performances can be realized by combining the developed projectors.
Figure 6: LiDAR of various performances can be realized by combining the developed projectors.

Sai and his colleagues are building on current achievements for future advances: “We are continuing research work that will advance our LiDAR technology, including solid-state LiDAR, toward boosting range and resolution, and making the LiDAR even smaller. We aim to commercialize LiDAR for autonomous driving and infrastructure monitoring in fiscal year 2023, and look forward to exploring new applications in robots, drones, and security devices.”

 
 
Video 1: (0:00-0:20) A Toshiba LiDAR with one new projector unit captures a clearer image of a building 300m ahead than the model announced in June 2021. (0:21-1:20) A LiDAR with two new projector units records a brighter, clearer image than one with only one unit. (High speed frame rate (10fps). Fixed angle. Detection range: ~310m. Outdoor, sunny conditions. Eye-safe laser.)
 
 
Video 2: (0:00-0:07) Toshiba’s LiDAR with two new projector units provides clearer detection in an outdoor, nighttime setting than a camera. (0:08-1:03) The circles show the LiDAR can accurately detect objects in motion, and their distance. (High speed frame rate (10fps). Fixed angle. Detection range: ~ 200m. Eye-safe laser.)

*1: Toshiba survey.

 
 
 

 

 

 

 

 

 

 

 



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