OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 9, Iss. 9 — Sep. 1, 1970
  • pp: 2143–2147

A Photomechanical Device for Triggering Digital Output on a GE Spectrophotometer

R. Peden and F. Grum  »View Author Affiliations


Applied Optics, Vol. 9, Issue 9, pp. 2143-2147 (1970)
http://dx.doi.org/10.1364/AO.9.002143


View Full Text Article

Enhanced HTML    Acrobat PDF (1330 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Most applications of modern spectrophotometry demand that spectrophotometric measurements be recorded on media suitable for direct use by data processing equipment. This paper describes a photomechanical method for actuating the readout command for an old model GE recording spectrophotometer. This instrument has nonlinear wavelength representation in the near ultraviolet and near infrared. The method involves an opaque disk having a direct one-to-one rotation relation with the wavelength drive. The disk contains three sets of small holes on the circumference of concentric circles which represent the near ultraviolet, visible, and near infrared regions of the spectrum. The accurate angular separation of these holes, along with a photodiode and lamp which are aligned for each set of holes, makes available a selection of these three ranges and automatically actuates the readout command in the control chassis at 10-nm intervals for all wavelength ranges. The data are then punched into cards by an IBM 526 summary punch. The option of taking data at 5-nm intervals is provided by a suitable second disk.

© 1970 Optical Society of America

History
Original Manuscript: February 13, 1970
Published: September 1, 1970

Citation
R. Peden and F. Grum, "A Photomechanical Device for Triggering Digital Output on a GE Spectrophotometer," Appl. Opt. 9, 2143-2147 (1970)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-9-9-2143


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. A. Susskind, Notes on Analogue-to-Digital Conversion Techniques (MIT Press, Boston, 1957), Chap. 6.
  2. E. T. Powner, J. Sci. Instrum. 43, 454 (1966). [CrossRef] [PubMed]
  3. W. B. Prescott, H. C. Lawrence, U.S. Patent3,459,480, Official Gazette, 5Aug.1969, p. 168.
  4. Datex Corp., Monrovia, Calif.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited