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topic 0657

Measure reflectivity of mirror polished stainless surface


What is the best way to measure reflectivity of a mirror polished stainless surface?

Does anybody know what is the reflectivity numbers for a regular glass mirror?


Michael Liu Taylor
Michael Liu Taylor
   specialty stainless steel distributor
Dallas, Texas


We use a Solar spectrum reflectometer,Manufactured by Devices and Services Co. Dallas, Texas.

Reflectivity of a regular glass mirror is R am2 = .882

Hope this helps,

Max T. Faeth
- Los Angeles, California, USA


Thanks Max.

Our interested customer performed their tests using:

Helium Neon Laser at 633 nanometer wavelength

Results: 63-64% reflectivity on Super #8 mirror polished stainless
and 56-57% reflectivity on Super #8 mirror polished stainless
with titanium nitride (gold color finishes).

I'm told these number is below regular glass mirrors...but very good for mirror polished stainless surface.

Michael Liu Taylor
Michael Liu Taylor
   specialty stainless steel distributor
Dallas, Texas


R&D division of Kombassan Holding is working on the development of a solar energy system.

We plan to commercialize the system within the next couple of years.

I want to measure mirror surface's reflection efficiency. I learned that reflectometers used on this subject, we want to buy one. We need a portable reflectometer. I want to get detailed technical information.

Is there a distributorship in Turkey? Could you send me catalogues, price list and brochures.

Thank you very much in advance for your help.


Fiener Keskin, Optic Group Leader

July 13, 2010

To: Max T. Faeth

Hello! I have a question about the equation R am2 = .882. What do the variables represent (R, a, m). Also is that m^2? Thanks!

Dan Guardia
- New York City, New York, USA

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