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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 51, Iss. 12 — Dec. 1, 1961
  • pp: 1402–1405

Energy-Recording Microdensitometer

A. B. HOOK, L. F. GILLESPIE, and F. MASTRUP  »View Author Affiliations


JOSA, Vol. 51, Issue 12, pp. 1402-1405 (1961)
http://dx.doi.org/10.1364/JOSA.51.001402


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Abstract

An inverse densitometric circuit is described which employs the technique of voltage-transfer curve translation to provide a direct linear measure to photographic-energy profiles. An antilog D scale (reciprocal-transmittance scale) linear to ±0.05 antilog D units over a basic antilog D range of 12 is obtained. Neutral-density filters are used to compound the basic sensitivity increment and obtain a total light-level range in excess of 1 to 103. An optical system is described which provides an instrument resolving power of 500 lines/mm.

Citation
A. B. HOOK, L. F. GILLESPIE, and F. MASTRUP, "Energy-Recording Microdensitometer," J. Opt. Soc. Am. 51, 1402-1405 (1961)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-51-12-1402


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References

  1. P. Hariharan and M. S. Bhalla, Rev. Sci. Instr. 27, 3 (1956).
  2. R. W. Engstrom, J. Opt. Soc. Am. 37, 420 (1947).
  3. M. Banning, J. Opt. Soc. Am. 37, 686 (1947).
  4. K. Frei and Hs. H. Gunthard, J. Opt. Soc, Am. 51, 83 (1961).

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