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ams OSRAM Adds Reliable, Built-in Eye Safety Feature in Latest IR VCSEL Emitter for In-cabin Sensing Applications - ams OSRAM has enhanced its portfolio of infrared laser modules for automotive in-cabin sensing with the TARA2000-AUT-SAFE vertical-cavity surface-emitting laser (VCSEL) family - ams-OSRAM.com
ams OSRAM Adds Reliable, Built-in Eye Safety Feature in Latest IR VCSEL Emitter for In-cabin Sensing Applications

 

NewswireTODAY - /newswire/ - Premstaetten, Austria, 2023/05/30 - ams OSRAM has enhanced its portfolio of infrared laser modules for automotive in-cabin sensing with the TARA2000-AUT-SAFE vertical-cavity surface-emitting laser (VCSEL) family - ams-OSRAM.com. SIX: AMS; ISIN: AT0000A18XM4

   
 
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• New TARA2000-AUT-SAFE family includes unique interlock loop method for completely safeguarding ultra-fast detection of faults that can compromise eye safety;
• Interlock method reduces bill of materials resulting in lower system cost;
• 940nm emitter supplied in two versions, with field of illumination optimized for driver monitoring and cabin monitoring using 2D NIR or 3D indirect time-of-flight cameras;
• ams OSRAM will supply the TARA2000-AUT-SAFE in mass volume to a Top 10 global car OEM starting in 2024.

ams OSRAM, a global leader in optical solutions, has enhanced its portfolio of infrared laser modules for automotive in-cabin sensing with the TARA2000-AUT-SAFE vertical-cavity surface-emitting laser (VCSEL) family, which offers a more reliable and robust eye safety feature than existing automotive VCSEL modules.

A top-10 global car manufacturer has already selected this new product for a new design, and ams OSRAM will supply it in mass production volumes starting in 2024.

The new TARA2000-AUT-SAFE, which produces a tightly controlled beam of infrared light at a peak wavelength of 940nm, is suitable for the same use cases as the existing TARA2000-AUT family: driver monitoring, gesture sensing, and interior (cabin) monitoring. It consists of an ams OSRAM VCSEL chip and micro-lens array (MLA) packaged in a compact module.

The TARA2000-940-W-AUT-SAFE, which has a wide field of illumination of 116° x 87°, is optimized for cabin monitoring with 2D near infrared (NIR) imaging and 3D indirect time-of-flight (iToF) cameras. A forthcoming version with a narrow field of illumination of 46° x 41°, the TARA2000-940-UN-AUT-SAFE, is suitable for driver monitoring. It is currently sampling with customers.

ams OSRAM has a history of providing OEMs and Tier 1 companies witih automotive-qualified, advanced technology for in cabin sensing. The company previously released the world’s first AEC-Q102 qualified and ISO 26262 compliant VCSEL flood illuminator, the TARA2000-AUT, which has been in mass production and shipping to multiple automotive customers since Q2 2021. Continuing the stream of innovation, the TARA2000-AUT-SAFE family offers increased reliability and simpler implementation for automotive manufacturers, due to the new, built-in interlock loop method for protecting eye safety.

The new device’s resistive interlock circuitry is integrated on the MLA. Providing a near-instant response (<1µs) to fault conditions, the TARA2000-AUT-SAFE can directly detect faults that could compromise eye safety, such as diffuser cracking or shear-off.

The TARA2000-AUT-SAFE solves various design and implementation challenges, and at a lower cost than competing products on the market today. The fast and reliable response is in contrast to the built-in photodiode method for eye safety protection in competing automotive VCSELs. In competing products, the photodiode signal is prone to faults caused by non-eye-safety related factors such as reflective objects in front of the VCSEL module, impairing the system’s ability to protect eye safety.

Also, the TARA2000-AUT-SAFE’s interlock loop is easier to integrate, as its read-out circuit only requires one AND gate or MOSFET. In comparison, the complex read-out circuit of photodiode includes an increased number of more expensive components. This means that the photodiode method results in a higher bill-of-materials cost, as well as a slower response to events that carry a risk to eye safety.

In addition, the photodiode’s response is strongly temperature-dependent, making system design more complex and less reliable. This is a particular drawback for automotive applications, which are exposed to a wide range of operating temperatures.

Firat Sarialtun, Senior Global Marketing Manager at ams OSRAM, said: ‘We have been able to take our experience in other application areas and directly apply it to enhancing the TARA2000 family. ams OSRAM has deep knowledge of interlock-based eye-safety designs, as we have had products that use the interlock method in mass production in other end markets, such as consumer and industrial, for many years.

‘We were the first in the industry to start mass production of an AEC-Q102 and ISO26262 compliant IR VCSEL module for in-cabin sensing in Q2-2021, and now we are taking VCSEL technology a step further with the interlook loop feature. Thanks to our deep engineering expertise across the whole optical assembly, the interlock circuit has been integrated directly on the lens and package, drawing on our deep understanding of each sub-component and technology in a complete VCSEL module.’

Additional product enhancements
The design of the TARA2000-AUT-SAFE builds on the high performance of the TARA2000-AUT. Housed in a robust ceramic package, the new device offers a higher maximum operating temperature of 125°C, supporting AEC-Q102 Grade 1 qualification as well as ISO 26262 for functional safety. Peak optical power output of a 100µs pulse at 25°C/2% duty-cycle/5A is 4W.

The TARA2000-940-UN-AUT-SAFE and TARA2000-940-W-AUT-SAFE VCSEL emitters are sampling now.

About ams OSRAM

The ams OSRAM Group (ams-osram.com) is a global leader in optical solutions. By adding intelligence to light and passion to innovation, we enrich people’s lives. This is what we mean by Sensing is Life.

With over 110 years of combined history, our core is defined by imagination, deep engineering expertise and the ability to provide global industrial capacity in sensor and light technologies. We create exciting innovations that enable our customers in the automotive, consumer, industrial and healthcare sectors maintain their competitive edge and drive innovation that meaningfully improves the quality of life in terms of health, safety and convenience, while reducing impact on the environment.

Our around 22,000 employees worldwide focus on innovation across sensing, illumination and visualization to make journeys safer, medical diagnosis more accurate and daily moments in communication a richer experience. Our work creates technology for breakthrough applications, which is reflected in over 15,000 patents granted and applied. Headquartered in Premstaetten/Graz (Austria) with a co-headquarters in Munich (Germany), the group achieved over EUR 4.8 billion revenues in 2022 and is listed as ams-OSRAM AG on the SIX Swiss Exchange.

ams is a registered trademark of ams-OSRAM AG. In addition many of our products and services are registered or filed trademarks of ams OSRAM Group. All other company or product names mentioned herein may be trademarks or registered trademarks of their respective owners.

 
 
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ams OSRAM Adds Reliable, Built-in Eye Safety Feature in Latest IR VCSEL Emitter for In-cabin Sensing Applications

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TARA2000-AUT-SAFE | ams OSRAM Group
Contact: Hilary McGuinness Fernholz - ams-OSRAM.com 
+49 151 27670184 hilary.mcguinnessfernholz[.]ams-osram.com / press[.]ams
 
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