The Reversed Telephoto Objective

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 75, No. 3, pp. 203–207
Abstract: Lenses of the reversed telephoto type were first used on cameras in the 1920's, although they had been used on projectors for many decades. This type has the advantages of a wide angular field, a long back-focal distance, and the possibility of a high relative aperture; however, the lens tends to be physically large, and existing designs are often complex and expensive. In spite of these disadvantages this type has been extensively used on motion-picture cameras, and recently also for wide-angle lenses on single-lens reflex cameras.
Publication Date: 1966-03-01
DOI: 10.5594/J12046
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J12046
Author(s): Rudolf KingslakeEastman Kodak Co., Apparatus and Optical Div., 400 Plymouth Ave. N. Rochester, N.Y. 14650
Copyright: © 1966 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Short Focus Lenses for Projection with Translucent Screens [Active]
1. Gage S. H. Gage H. P. , Optic Projection , Comstock , Ithaca, N.Y. , 1914 , p. 599 . EXTERNAL
10. U.S. Pat. 1996054, filed by L. W. Bowen, 1933 . EXTERNAL
11. Brit. Pat. 222709, filed by H. W. Lee, 1923 . EXTERNAL
12. U.S. Pat. 1955590, filed by H. W. Lee, 1930 . EXTERNAL
13. U.S. Pat. 3037426, filed by E. Hugues, 1960 . EXTERNAL
14. Kingslake R. in Applied Optics and Optical Engineering , Vol. II , Academic Press , New York , 1965 , p. 219 . EXTERNAL
15. Gardner I. C. Washer F. E. , “Lenses of extremely wide angle for airplane mapping,” J. Res. N.B.S. 40 , 95 , Feb. 1948 (Res. Paper RP 1858). In the absence of distortion, the radial distance from the center of the field to the image of an object point subtending an angle θ from the axis would be h' = f tan θ. If the actual image is displaced radially from its ideal position by a distance δh', then the linear distortion is δh’ and the percent distortion is 100. δh'/h'. The presence of barrel distortion tends to concentrate the light in the outer parts of the field by crowding the oblique images together. EXTERNAL
16. Hill R. , “A lens for whole sky photography,” Proc. Opt. Conv. 1926 , pp. 878 – 883 . EXTERNAL
17. Miyamoto K. , “Fish-eye lens,” J. Opt. Soc. Am. 54 : 1060 – 1061 , Aug. 1964 . EXTERNAL
2. Examples are given by W. G. Wolfe, U.S. Pats. 1802099 and 1802100 (filed 1927); and also I. Kitroser, U.S. Pat. 1897262 (filed 1930 ). EXTERNAL
3. See, for instance, B. Langton, Brit. Pat. 572086 (filed 1944 ). EXTERNAL
4. Brit. Pat. 388215, filed by H. W. Lee, 1932 . EXTERNAL
6. U.S. Pat. 1145132, filed by C. H. Florian, 1913 . The Petzval sum is a measure of the intrinsic field curvature of a lens, and only by reducing this sum can an anstigmatic flat field be obtained. This is usually accomplished by incorporating into the lens some elements with positive power and some with about the same amount of negative power. EXTERNAL
7. U.S. Pat. 1085868, filed by A. König, 1913 . A telecentric lens is one in which the middle rays of emerging light beams proceeding towards different parts of the final image are approximately parallel to the optical axis. The exit pupil is thus very distant, a fact which gives the name to this type of system. EXTERNAL
8. U.S. Pat. 1862950, filed by J. A. Ball, 1929. Also U.S. Pat. 1910492, filed by L. L. Mellor, 1931 . EXTERNAL
9. U.S. Pat. 1863099, filed by L. W. Bowen, 1930 . EXTERNAL

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<span class="citation">Rudolf Kingslake; <cite>The Reversed Telephoto Objective</cite>, Journal of the SMPTE ( Volume: 75, Issue: 3, March 1966); SMPTE, 1966. Available at <a href="https://doi.org/10.5594/J12046" target="_blank" rel="noopener">https://doi.org/10.5594/J12046</a></span>

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Rudolf Kingslake; The Reversed Telephoto Objective, Journal of the SMPTE ( Volume: 75, Issue: 3, March 1966); SMPTE, 1966
doi: 10.5594/J12046
url: https://doi.org/10.5594/J12046

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Rudolf Kingslake; <cite id="bib-10-5594-j12046">The Reversed Telephoto Objective</cite>, Journal of the SMPTE ( Volume: 75, Issue: 3, March 1966); SMPTE, 1966
<span class="doi">10.5594/J12046</span>
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Referenced By

Progress Committee Report for 1966 [Active]