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Volume 22, Issue 11-12
Displaying 1-12 of 12 articles from this issue
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Hiroshi KUBOTA1953 Volume 22 Issue 11-12 Pages 369
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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Hiroshi KUBOTA1953 Volume 22 Issue 11-12 Pages 370-377
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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Tatsuro SUZUKI1953 Volume 22 Issue 11-12 Pages 378-382
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSThis paper is that concerning to the procedure to design a Ions system having aspberical surfaces. In this method, the residual aberrations of a spherical lens system are reduced step by step by the appropriate deformations of the refracting surfaces within the system following the differential correcting method similar to those used for a spherical system. Though it is only for a few examples at present, hopeful results have been obtained.View full abstractDownload PDF (434K) -
Shohei FUJIYOSHI1953 Volume 22 Issue 11-12 Pages 382-385
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSIt has been our industrial practice to use pitch polisher for polishing optical glasses. But we have not had enough knowledge about the quantitativehardness and elasticity of pitch. Excepting some skilled workers, many people are troubling how to know about them. So we have tested them, with two gauges deviced in our laboratory. Discussed problems. are as follows.
1. Introduction.
2. Characteristics of test pieces.
3. Top figure of the spindle of gauge.
4. Pressure of the measurement.
5. Seasoning of the pitch.
6. Relation between. hardness & temperature.
7. Mechanism of gauge.
8. Relation between hardness & thickness.
9. Elasticity of pitch.
10. New device of measurement.
11. Observed effect in a few factories.View full abstractDownload PDF (889K) -
Minoru TAMURA1953 Volume 22 Issue 11-12 Pages 386-388
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSResolving power of a photographic lens is tested through photographing the test chart and the result is represented with the maximum number of linesper millimeter resolved. But the value varies relatively to the sort of photographic emulsion used in the test and the kind of development. A new quantity provisionally named T-number is reported, by which the quality of a photogrraphic lens is represented independently of the emulsion and development: the value is oneand the same for each measurement with any emulsion or development.View full abstractDownload PDF (297K) -
Hiroshi HASUNUMA, Jiro NARA1953 Volume 22 Issue 11-12 Pages 389-392
Published: December 10, 1953
Released on J-STAGE: February 20, 2009
JOURNAL FREE ACCESSThe relation between the critical angle of regular reflection and the roughness (R. M. S. value) of the surface of metals and glasses were investigated by a similar apparatus as Jentzsch's.
The relation between the critical angle θ and R. M. S. value of the surfaces h. are as follows:
_??_
Where, λ is wave length and k are constants which is defined by the profile of the surfaces. k beeing 1/3 for glasses and steels, and 1/2 for chrome plated.View full abstractDownload PDF (327K) -
Shigenori NAWATA, Koshi TAKASHIMA1953 Volume 22 Issue 11-12 Pages 392-395
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSThe improved phase microscope with cross-shaped phase plate was constructed and we studied into the image of this microscope. The amplitude grating was used for the test-piece. There is a strong tendency for boundaries between areas of transparent and opaque parts to be delineated by an abrupt change of intensity. In this paper, this abrupt change (edge effect) and the contrast of image were studied.View full abstractDownload PDF (344K) -
Buichi KUBOTA1953 Volume 22 Issue 11-12 Pages 396-400
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
JOURNAL FREE ACCESSMeasurement has been carried out on the linearity for illumination intensity and the spectral sensitivity of the lead sulphide, selenide and telluride photoconductive cells prepared by the author.
The results of measurements show that the ratio of conductivity during illumination to that before illumination is expressed as a function of incident energy and cell temperature. The spectral response of lead selenide photoconductive cell is also modified by a trace of oxygen during preparing process as in lead sulphide photoconductive cell.View full abstractDownload PDF (467K) -
Yukichi UKITA, Jumpei TSUJIUCHI1953 Volume 22 Issue 11-12 Pages 401-404
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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I. C. Gartner1953 Volume 22 Issue 11-12 Pages 405-406
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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Masahide KAMIYAMA1953 Volume 22 Issue 11-12 Pages 409-412
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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Naohide TAKEDA1953 Volume 22 Issue 11-12 Pages 413-414
Published: December 10, 1953
Released on J-STAGE: February 09, 2009
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