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ams OSRAM unveils latest horticulture news: Enhanced 640 nm Red addition expands OSLONŽ Optimal horticultural LED Series

- New OSLONŽ Optimal Red enables broader spectral coverage for better growth of common plant types that are grown under artificial lighting

- OSLONŽ Optimal Red can address growers’ problems with fungus, bacteria and bleaching

- OSLONŽ Optimal Red offers outstanding efficacy and robust performance in demanding greenhouse and indoor farming applications

Premstaetten, Austria and Munich, Germany – WEBWIRE
Application Image for the OSLONŽ Optimal Red LED.
Image: ams OSRAM
Application Image for the OSLONŽ Optimal Red LED. Image: ams OSRAM

ams OSRAM (SIX: AMS), a global leader in optical solutions, has extended its OSLONŽ Optimal family of horticultural lighting LEDs with a new 640 nm Red LED, which enables indoor farmers to produce faster and healthier plant growth.

Providing broader coverage of the red portion of the spectrum, the new 640 nm Red LED joins the 660 nm Hyper Red and 730 nm Far Red in the OSLONŽ Optimal family, which also includes a 450 nm Deep Blue LED and a horti white LED.
It has been common practice in horticulture to illuminate crops with a mix of 660 nm, 450 nm and 730 nm, or 660 nm and white LEDs for plants that require full-spectrum light. Initial research conducted by Wageningen University on behalf of ams OSRAM shows that a double red peak (640 nm and 660 nm) in combination with horti white increases the dried biomass level in indoor growing environments.
In addition, the use of the OSLONŽ Optimal Red helps prevent photo bleaching in some plant varieties. Experience shows that it can also prevent the incidence of fungal and bacterial infection in leafy greens such as basil.
The new OSLONŽ Optimal Red product can play an important part in raising energy efficiency and reducing the cost of electric power in all horticultural lighting applications, including greenhouse toplighting and interlighting, and vertical farming. Producing 3.53 ľmol/J, it achieves very high wall plug efficiency of 66.3 %. The LED’s radiant flux is 485 mW, and photon flux is 2.58 ľmol/s. Peak wavelength is 640 nm and the dominant wavelength is 630 nm.
Thomas Grebner, Marketing Manager at ams OSRAM, said: ‘The discovery of new recipes that include a double red peak of Hyper Red and Red is helping growers produce more biomass and maintain superior plant health. With the introduction of the OSLONŽ Optimal Red LED, horticultural lighting equipment manufacturers can achieve very high levels of efficiency and reliability.’

Robust ceramic package for high reliability
The OSLONŽ Optimal LEDs are high-power ceramic packages based on a 1 mm˛ die and a standard 3030 footprint with a Lambertian emission profile. The OSLONŽ Optimal portfolio of products, based on the latest ams OSRAM 1 mm2 chip technology, provide very stable light output over a wide temperature range, as well as very low thermal resistance and long lifetime.
The new Red product is suitable for horticultural purposes as well as for use in general lighting applications such as architainment and signal lighting.
The OSLONŽ Optimal Red LED can be ordered now in production volumes using the part number GR CSSRML.24. For more technical information or to request samples, go to For more information:

About ams OSRAM

The ams OSRAM Group (SIX: AMS) 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 (ISIN: AT0000A18XM4).
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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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