US3689152A - Reproducing camera - Google Patents

Reproducing camera Download PDF

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Publication number
US3689152A
US3689152A US933473*A US3689152DA US3689152A US 3689152 A US3689152 A US 3689152A US 3689152D A US3689152D A US 3689152DA US 3689152 A US3689152 A US 3689152A
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US
United States
Prior art keywords
illuminating
support means
illuminating device
item
photographic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US933473*A
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English (en)
Inventor
Gerhard Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRITZ GEISENBERGER
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FRITZ GEISENBERGER
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Filing date
Publication date
Application filed by FRITZ GEISENBERGER filed Critical FRITZ GEISENBERGER
Application granted granted Critical
Publication of US3689152A publication Critical patent/US3689152A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting

Definitions

  • An illuminating device for use in photography to pro- 56 R f C-ted vide uniform illumination of a flat item to be photo- 1 e erences I graphically copied has light sources disposed along the UNITED STATES PATENTS four linear sides of a planar rectangular carrier for the item, the light sources being arranged so that at least El "355/70 two opposite sides of the carrier the distance of the 1 5 23 2/1930 S i "355/67 X light sources from the associated side is greater in the 3,288,023 1 1,1966 g middle of the side than at its ends.
  • the invention is based upon the problem of avoiding long constructional lengths in reproducing-cameras of this type, by using a wide-angled lens, whilst however compensating for the brightness decrease at the lens edges, so as to prevent the edge regions of the emulsion carrier from being less illuminated that its middle.
  • the invention now provides a photographic illuminating device for illuminating a substantially flat item to be photographically copied such that when employing a wide angle lens and short constructional length a uniform illumination results over the enthe emulsion carrier, the illuminating device comprising'a substantially rectangular support means for said item, and means for illuminating said item disposed along each of the four linear sides defining the surface of the support means, the illuminating means on at least two opposite sides of the support means being farther from the corresponding side of the support means in the middle portion of the linear side than at its distal ends.
  • This arrangement is adjusted in such a way that a uniform illumination of the emulsion carrier is achieved. It is of no importance whether the surface of the item to be copied is illuminated by direct light or by through-light.
  • the arrangement of the light sources suggested by the invention for such a reproducing-camera has the advantage that on the one hand, it is possible to use a wide-angled lens in order to achieve a short constructional length of the camera, and on the other hand nevertheless a uniform exposure of the emulsion carrier can be achieved, without the diameter of the camera having to be increased in comparison to the usual dimensions.
  • a camera is obtained which is relatively small as regards all three dimensions, whilst at the same time a uniform exposure of the emulsion carrier is achieved.
  • the arrangement of the light sources according to the invention may be carried out in different ways.
  • the light sources extend along arcs lying in the side surfaces, or on sides of polygons close to the course thereof.
  • the light sources corresponding to the arcuate shape, may be curved, and/or may be in the form of rods of light representing the sides of the polygon.
  • lamps of the bulb type may also be provided, and arranged in an arcuate arc shape and/or on the polygon sides.
  • the light sources, with their side surfaces may be pivotable about the linear edge to which they are attached.
  • FIG. 1 shows an illuminating device witharc-shaped lamps
  • FIG. 2 shows an illuminating device with rod-shaped lamps forming sides of a polygon
  • FIG. 3 shows an illuminating device with pivotable side surfaces containing light sources
  • FIG. 4 shows an illuminating device for direct lighting and for indirect lighting.
  • a four-sided carrier 1 for carrying an item to copied is limited by imaginary side surfaces 3 enclosed by four curved lamps 2; the said side surfaces 3 meet the surface of the carrier 1 at respective linear edges 4. If now the lamps 2, with their imaginary side surfaces 3, are pivoted about the edge 4 into the plane 6 of the surface of the carrier 1 for the item to be copied (or in a plane parallel thereto), then the curved lamps 2 would lie on the closed circular line 5, so that the four lamps 2, in all regions, are at the same distance from the middle of the surface of the carrier 1.
  • this is also brought about in the same manner, if the light sources 2, according to FIG.
  • the rectangular surface of the item to be copied on carrier 1 is illuminated by rodshaped lamps 2'.
  • the lamps 2 at the top and bottom edges of the carrier 1 are rectilinear while the lamps 2, at the lateral edges of the carrier 1 are arranged so as to form sides of a polygon, the sides approximately following a generally arcuate line, as illustrated. Otherwise, no essential differences exist in comparison to the. embodiment according to FIG. 1.
  • the carrier 1 for the item to be copied is likewise limited by side surfaces formed by four side walls 3".
  • an articulated connection is provided (not shown), so that the side surfaces 3" are pivotable with degrees of freedom as indicated by the arrows b and c.
  • the pivotable side surfaces 3" there is arranged a plurality of lamps 2" which are in the form of bulbs.
  • the illuminating-device according to FIG. 4 can be used not only for direct lighting but also for throughlighu'ng.
  • the carrier 1' of the item to be copied consists of a glass plate.
  • the side walls 3' which form the walls of a housing, each carry two neon lamps 2" arranged mirror-symmetrically in relation to one another, so that the surface of the item to be copied is illuminated from the front and also from the rear which fact may be of importance for the reproduction of items to be copied which consist of transparent pictures.
  • a photographic illuminating device for illuminating a substantially flat item to be photographically copied such that when employing a wide-angle lens and short constructional length a uniform illumination results over the entire emulsion carrier, the illuminating device comprising a substantially rectangular support means for said item, and means for illuminating said item disposed along each of the four linear sides defining the surface of the support means, the illuminating means on each of at least two opposite sides of the support means varying in distance from the corresponding side of the support means and being farther from said corresponding sides of the support means in the middleportion of the linear side than at its distal ends.
  • a photographic illuminating device according to claim 1, wherein said illuminating means associated with each said corresponding side extends in an arc lying in a plane passing though said corresponding side.
  • a photographic illuminating device comprising arcshaped light sources.
  • a photographic illuminating device according to claim 1, wherein at least said illuminating means at each of said two opposite sides forms a section of a polygon lying in a plane passing through the associated side.
  • a photographic illuminating device wherein said illuminating means are formed by substantially rod-shaped light sources.
  • a photographic illuminating device wherein said illuminating means on at least two 0 site sides of the su ort means are carried b p a i n side surfaces whic :ire each rotatable about all UNHED STATES mm OFFICE CERHHCATE FQQRECITMN 3 Patent No, '3 152 Dat d September 5, 1972 Inventor(s) GERHARD GRIMM It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
US933473*A 1969-04-30 1970-04-30 Reproducing camera Expired - Lifetime US3689152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691922188 DE1922188B1 (de) 1969-04-30 1969-04-30 Wiedergabekamera

Publications (1)

Publication Number Publication Date
US3689152A true US3689152A (en) 1972-09-05

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ID=5732950

Family Applications (1)

Application Number Title Priority Date Filing Date
US933473*A Expired - Lifetime US3689152A (en) 1969-04-30 1970-04-30 Reproducing camera

Country Status (6)

Country Link
US (1) US3689152A (enExample)
JP (1) JPS493927B1 (enExample)
CH (1) CH505399A (enExample)
DE (1) DE1922188B1 (enExample)
FR (1) FR2040500A1 (enExample)
GB (1) GB1251765A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1387212A1 (en) * 2002-08-01 2004-02-04 Kabushiki Kaisha Toshiba Illumination apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50112522U (enExample) * 1974-02-23 1975-09-13

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606593A (en) * 1898-06-28 Of pro
AT84972B (de) * 1919-12-09 1921-08-10 Leon Dr Kolb Beleuchtungsvorrichtung für photographische Reproduktions-, Vergrößerungs- und Verkleinerungszwecke.
US1517742A (en) * 1923-07-05 1924-12-02 John C Martin Combined photographic enlarging lantern and printing machine
US1748523A (en) * 1927-02-14 1930-02-25 Smith Cyrus Ferris Photograph-enlarging apparatus
US2490370A (en) * 1946-09-12 1949-12-06 Testrite Instr Co Inc Means for transmitting and radiating light rays emitted from a source of light
DE806632C (de) * 1949-06-30 1951-06-14 Walter Eisbein Dr Ing Bildauflage- oder Zwischenscheibe fuer Kopiergeraete, insbesondere fuer Photokopiergeraete, und Verfahren zu deren Herstellung
DE862402C (de) * 1950-09-02 1953-01-12 Richard Dr-Ing Zechnall Flaechenleuchte fuer Reproduktionskameras
US2763772A (en) * 1952-08-25 1956-09-18 Sheldon H Hine Photographic illuminating device
US3288023A (en) * 1964-04-27 1966-11-29 Lane Kingdon Slide copying apparatus
US3476927A (en) * 1967-01-09 1969-11-04 Matthew J Rothman Portable illuminated mirror
US3498714A (en) * 1967-06-07 1970-03-03 Dennison Mfg Co Gas discharge lamp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1933439A1 (de) * 1968-07-01 1970-01-15 Gen Electric Nitrierverfahren

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606593A (en) * 1898-06-28 Of pro
AT84972B (de) * 1919-12-09 1921-08-10 Leon Dr Kolb Beleuchtungsvorrichtung für photographische Reproduktions-, Vergrößerungs- und Verkleinerungszwecke.
US1517742A (en) * 1923-07-05 1924-12-02 John C Martin Combined photographic enlarging lantern and printing machine
US1748523A (en) * 1927-02-14 1930-02-25 Smith Cyrus Ferris Photograph-enlarging apparatus
US2490370A (en) * 1946-09-12 1949-12-06 Testrite Instr Co Inc Means for transmitting and radiating light rays emitted from a source of light
DE806632C (de) * 1949-06-30 1951-06-14 Walter Eisbein Dr Ing Bildauflage- oder Zwischenscheibe fuer Kopiergeraete, insbesondere fuer Photokopiergeraete, und Verfahren zu deren Herstellung
DE862402C (de) * 1950-09-02 1953-01-12 Richard Dr-Ing Zechnall Flaechenleuchte fuer Reproduktionskameras
US2763772A (en) * 1952-08-25 1956-09-18 Sheldon H Hine Photographic illuminating device
US3288023A (en) * 1964-04-27 1966-11-29 Lane Kingdon Slide copying apparatus
US3476927A (en) * 1967-01-09 1969-11-04 Matthew J Rothman Portable illuminated mirror
US3498714A (en) * 1967-06-07 1970-03-03 Dennison Mfg Co Gas discharge lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1387212A1 (en) * 2002-08-01 2004-02-04 Kabushiki Kaisha Toshiba Illumination apparatus
US20040021834A1 (en) * 2002-08-01 2004-02-05 Kabushiki Kaisha Toshiba Illumination apparatus
US6929375B2 (en) 2002-08-01 2005-08-16 Kabushiki Kaisha Toshiba Illumination apparatus

Also Published As

Publication number Publication date
GB1251765A (enExample) 1971-10-27
DE1922188B1 (de) 1970-12-23
FR2040500A1 (enExample) 1971-01-22
CH505399A (de) 1971-03-31
JPS493927B1 (enExample) 1974-01-29

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