OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 43, Iss. 6 — Jun. 1, 1953
  • pp: 522–522

Titanium Dioxide Films as Selective Reflectors of the Near-Infrared

FRANK J. STUDER and D. A. CUSANO  »View Author Affiliations


JOSA, Vol. 43, Issue 6, pp. 522-522 (1953)
http://dx.doi.org/10.1364/JOSA.43.000522


View Full Text Article

Acrobat PDF (357 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Owing to the high refractive index of TiO2, films of this material show a great difference in reflection between the spectral regions of constructive and destructive interference. A glass slide coated on one side with a film of such thickness as to give its first order reflection maximum at 11 000A and its reflection minimum at 5500A, will reflect approximately 30 percent at 11 000A and 8 percent at 5500A. If the glass is coated on both sides, it will reflect in the neighborhood of 40 percent of the integrated infrared from a tungsten lamp operated at 2700°K, while it reflects only 8 percent at 5500A. A series of experiments with incandescent lamps was undertaken to determine the effect of such coatings applied to the bulbs. Uniform TiO2 coatings of the proper thickness were deposited on the inside and outside of clear spherical bulbs, and the light output measured from compact filaments when carefully centered inside a coated bulb and when centered in an uncoated bulb. It was found that, for a given power input, the light output from the coated bulb was as much as 20 percent higher than from the uncoated bulb. For the same light output, 10 percent less power input was required in the coated bulb. Because this result was obtained only when spherical nonfrosted bulbs with accurately centered small filaments were used, it is questionable whether this process will have any practical applications in connection with incandescent lamps.

Citation
FRANK J. STUDER and D. A. CUSANO, "Titanium Dioxide Films as Selective Reflectors of the Near-Infrared," J. Opt. Soc. Am. 43, 522-522 (1953)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-43-6-522

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited