FAQs

I thought LEDs were still five years away from matching the brightness of regular light bulbs?


How much energy could be saved if lighting fixtures were converted to LEDs?


Where can I get Lamina LED light engines?


What kind of support does Lamina offer?


Do I need additional heat sinking with your part?


What colors are available?


How can I get data sheets on your products?


How do I attach your arrays to a heat sink?


Where can I buy heat sinks?


What metal do you use to enhance reflectivity in your cavities?


What kind of testing have you done?


Does Lamina bin light engines for specific luminous flux or color characteristics? Can you manufacture light engines with exactly 5000°K?


How does your thermal packaging technology work?


What life time/durability do you expect?


Are any IR or UV module designs currently available or planned in the future?


Are optics available?


How can you accomplish the coupling for single/multimode optical fibers?


Besides air cooling, what do you recommend for cooling?
 

What can you say about the homogeneity of the irradiance and the power density?


I thought LEDs were still five years away from matching the brightness of regular light bulbs?

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How much energy could be saved if lighting fixtures were converted to LEDs?

If just 25% of lighting fixtures were converted to LEDs, we could save $115 billion in utility costs; alleviate the need to build 133 new coal-burning power stations; reduce carbon emissions by 158 million metric tons and avoid releasing 5,700 pounds of airborne mercury per year. In fact, a global switch to energy-efficient LED lighting would dwarf cuts achieved by existing wind and solar power sources, and trim the world's electricity bill by nearly a tenth!  Source: International Enery Agency

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Where can I get Lamina LED light engines?

Lamina's light engines can be purchased through any of our distributors or contact us.

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What kind of support does Lamina offer?

Lamina has a fully staffed application engineering department with skills and experience in package design, thermal design, optical design, assembly, and application development of LED products. Please contact us for assistance.

This department can provide assistance in selecting light engines, obtaining optics or thermal management materials, designing custom products, and integrating our light engines into your application.

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Do I need additional heat sinking with your part?

Yes, our packaging technology provides the lowest thermal resistance from the die junction to the case as possible. However, alone this is not sufficient surface area to radiate the heat generated and does require secondary heat sinking. Lamina has an application note which covers the basics on Thermal Management of Lamina light engines.

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What colors are available?

Lamina manufactures the primary monochromatic colors as standard offerings. These include red, amber, green, blue, and white.

Also offered are complete RGB arrays, where discrete R/G/B diodes are co-mingled in each cavity, achieving the most intimate blending of light possible. These can be used to saturate the three individual primary colors or to create white or another color by controlling power to each of the primary colors.

Lamina's light engines are capable of using LEDs from all leading LED manufacturers. Please consult with our application engineering department for assistance in selecting a color (wavelength) that meets your needs.

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How can I get data sheets on your products?

Data sheets and application notes are available for download from our Documentation Library.

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How do I attach your arrays to a heat sink?

The best solution is to utilize the flange mount features in our light engines and screw the part down to the heat sink with a thermal grease interface between the light engine and the heat sink. There are also numerous other solutions. Our application note on thermal management can guide you in this. Please do not hesitate to contact our Application Engineering Department for assistance.

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Where can I buy heat sinks?

In addition to Lamina’s selection of radial heat sinks available through select distributors, Lamina supplies heat sinks for prototyping, and has a list of heat sink vendors and contact information available in our Thermal Management application note.

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What metal do you use to enhance reflectivity in your cavities?

The cavity bottom is typically a silver alloy bonded directly onto the ceramic substrate. This provides a reflective surface to extract light from the cavity.

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What kind of testing have you done?

Our light engines undergo complete photometric testing on each production lot. The information on our data sheets indicates the typical and minimum values on each of our test parameters.

We also perform life testing and other reliability tests to assure the benefits of solid state lighting are realized in your application.

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Does Lamina bin light engines for specific luminous flux or color characteristics? Can you manufacture light engines with exactly 5000K?

Through our proprietary AccuBin process, Lamina offers binned product. If you have specific color temperature requirements, please contact Lamina's Application Engineering Department.

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How does your thermal packaging technology work?

Lamina's solid state lighting products, utilize a proprietary packaging solution to provide a highly efficient transfer of thermal energy from the LED n-p junction to the case and is engineered to have thermal conductivity of 170 W/mK in the Z direction, and 220 W/mK in the X/Y direction. This allows for significant heat spreading as well. This solution is also matched to the Thermal Coefficient of Expansion (TCE) of most LED die, reducing mechanical stresses due to TCE differences in the system. The result of this packaging technology is that LED die can be placed in high density arrays, achieving light densities of > 1400 lumen /in2.

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What life time/durability do you expect?

Lamina has published an application note titled "Life, Lumen Maintenance and Reliability" for our products. It is available as a download from our website.

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Are any IR or UV module designs currently available or planned in the future?

There are no plans to offer an "off the shelf" IR (infrared) or UV (ultraviolet) module series. For applications where IR or UV light is required, Lamina welcomes the opportunity to discuss your application and develop a suitable product.

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Are optics available?

Yes. Lamina offers wide variety of optics for the Atlas and Titan Series. Many of these optics are available in Medium, Wide, and Narrow distributions.

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How can you accomplish the coupling for single/multimode optical fibers?

Coupling to either single or multimode fibers requires careful design of the optics and the interface between the optic and the light engine surface. Please contact Lamina's Application Engineering Department to discuss your specific requirements.

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Besides air cooling, what do you recommend for cooling?

Our primary cooling method is a heat sink connected with a thermal interface material to our light engines. These heat sinks are generally designed for use in air. Some heat sinks can be selected for use with forced airflow as well. Lamina has an application note "Thermal Management of Lamina High Brightness Light engines” with guidance into this area. Please review this document and contact Lamina's Technical Services should you need assistance.

Lamina is evaluating the use of other active cooling methods. Some of these methods show promise. Please check our website periodically for updates into cooling techniques.

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What can you say about the homogeneity of the irradiance and the power density?

Lamina's light engines combine the effects of multiple die densely packed together. By configuring the wiring scheme used in a design, Lamina can place die in series or parallel or series/parallel strings to reduce variations due to Vf or intensity. The result is very uniform light achieved by blending the lights from all of the individual sources into what appears as a single high brightness light engine.

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