US3848520A - Line drawing photoexposure device with image rotating means - Google Patents

Line drawing photoexposure device with image rotating means Download PDF

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Publication number
US3848520A
US3848520A US00274797A US27479772A US3848520A US 3848520 A US3848520 A US 3848520A US 00274797 A US00274797 A US 00274797A US 27479772 A US27479772 A US 27479772A US 3848520 A US3848520 A US 3848520A
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United States
Prior art keywords
support member
straight line
light rays
relative
aperture
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Expired - Lifetime
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US00274797A
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English (en)
Inventor
R Webster
L Rich
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Gerber Systems Corp
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Gerber Scientific Instrument Co
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Priority to US00274797A priority Critical patent/US3848520A/en
Priority to GB1824073A priority patent/GB1385165A/en
Priority to DE2328096A priority patent/DE2328096A1/de
Priority to JP6787873A priority patent/JPS5340459B2/ja
Priority to FR7323837A priority patent/FR2197476A5/fr
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Publication of US3848520A publication Critical patent/US3848520A/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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/22—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using plotters
    • G06K15/225—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using plotters using optical plotters

Definitions

  • a devicev for exposing lines on a photosensitive surface by means of a spot of light movable thereover comprises a source of light and an optical system for directing rays of light from the source onto the photosensitive surface to form a spot thereon.
  • a spot shape defining aperture In the path of the light rays is a spot shape defining aperture, the projected spot being a real image of the aperture, and between the aperture and the photosensitive surface in a zone of non-parallel light is a non-restricted beam rotating system which is operable to rotate the projected light spot or image about the optical axis relative to the photosensitive surface to maintain a given axis of the spot perpendicular to the path of travel of the spot.
  • This invention relates to a device for exposing lines on a photosensitive surface by means of a light spot moved thereover, and deals more particularly with such a device including a means for rotating the light spot relative to the photosensitive surface for the purpose of enabling a given axis of the spot to be maintained perpendicular to its path of travel.
  • a device of the general type with which this invention is concerned is shown by prior US. Pat. No. 3,330,182.
  • a table supports a sheet of photosensitive material and a photoexposure device which produces a spot of light directed onto the photosensitive material is supported for movement in a plane above the table.
  • the photoexposure device is movable in any direction in its plane of movement so as to be able to trace any desired line on the photosensitive surface.
  • the shape of the light spot is provided by an aperture, with the spot being a real image of the aperture, which may be one selected from a group of apertures carried by an aperture wheel.
  • a circular aperture may be used to define the shape of the spot, and since a circular spot is symmetrical above its axis, there is no need for rotating such spot as it is moved in different directions over the photosensitive surface.
  • the spot when using a spot consisting of two spaced sub-spots for the purpose of simultaneously exposing two spaced parallel lines the spot should be oriented in such a manner that the line passing through the two sub-spots is maintained perpendicular to the path of travel of the spot at all times.
  • a dove prism when used in a photoexposure device of the type in question for the purpose of rotating the projected spot is restricted to use only in a zone of parallel light rays. Therefore, it is necessary to combine with the dove prism a collimating lens or lens system for providing a zone of parallel light rays within which the dove prism may work. Also, dove prisms produce certain aberrations or distortions of the image passing therethrough, particularly astigmatic and chromatic aberrations.
  • zone of parallel light rays is used to refer to a zone in an optical imaging system wherein all of the rays originating from any given point on the object are parallel to one another.
  • zone of non-parallel light rays is used to refer to a zone in an optical imaging system wherein all of the light rays originating from any given point on the object are not parallel but instead are either diverging or converging relative to one another.
  • restricted image rotator refers to an image rotating means, such as a dove prism, which is effective, that is does not cause dispersion of the image forming rays, only when used in a zone of parallel light rays.
  • nonrestricted image rotator refers to an image rotating means which is not restricted to use in a zone of parallel light and which instead is effective in either a zone of parallel light or a zone of non-parallel light.
  • the photoexposure line drawing device of the present invention uses a nonrestricted image rotator located in a zone of nonparallel light thereby avoiding the need for a collimating lens or lens system.
  • the non-restricted image rotator is in the form of either a mirror assembly or a prism providing an odd number of reflecting surfaces which are rotatable in unison about a given straight line colinear with the optical axis of the rays entering the assembly.
  • the prism is one, such as a Pechan or reversion prism, which has its entrance and exit surfaces arranged perpendicular to the optical axis.
  • this-arrangement avoids astigmatic and chromatic abberrations.
  • the reflecting surfaces are preferably front surface mirrors so that little or no internal energy absorption occurs as the light rays pass through the assembly thereby avoiding heating of the assembly and allowing it to be used with high energy light sources.
  • mirrors to form an image rotator means that the various angles by which the light path is bent as it passes through the rotator are not limited to the internal refractance angle of glass or other prism material. Therefore, the mirrors may be arranged at a wide variety of interrelated angles to best suit the remainder of the imaging system with which it is used.
  • This invention resides in a line drawing photoexposure device which projects a spot of light onto a photosensitive surface to expose a line on such surface as the spot is moved thereover.
  • This image rotator is of the non-restricted type and is located in a zone of nonparallel light rays. It may consist of either a mirror assembly or a prism providing three, or other odd number of, planar reflecting surfaces for deflecting the light rays passing through the assembly in such a manner that as the light rays pass through the assembly their optical axis is first directed away from and then back to a given straight line.
  • the image rotator is a prism, the entrance and exit surfaces of the prism are arranged perpendicular to the optical axis.
  • FIG. 1 is a perspective view of a mechanism, constructed in accordance with the present invention, for exposing lines on a photosensitive surface.
  • FIG. 2 is a side elevational view of the photoexposure device of the mechanism of FIG. 1 for projecting a spot of light onto the photosensitive surface, part of the housing of the device being broken away to show further details and part of the device within the housing being shown somewhat schematically.
  • FIG. 3 is a front elevational view of the lower portion of the projecting device of FIG. 2 shown with the housing removed.
  • FIG. 4 is a side view, partly in elevation and partly in section, of the portion of the projecting device shown in FIG. 3.
  • FIG. 5 is a view taken generally on the line 5-5 of FIG. 4.
  • FIG. 6 is a sectional view taken generally on the line 6-6 of FIG. 5.
  • FIG. 7 is a fragmentary view taken generally on the lines 7-7 of FIG. 5.
  • FIG. 8 is a fragmentary view taken generally on the line 8-8 of FIG. 6.
  • FIG. 9 is a view showing one of the mirror members of the mirror assembly of FIG. 6 rotated 90 from its FIG. 6 position.
  • FIG. 10 is a view similar to FIG. 5 but shows another embodiment of this invention using a Pechan prism as the image rotator.
  • FIG. 11 is a sectional view taken generally on the line l111ofFIG. 10.
  • FIG. 12 is a view similar to FIG. 6 but shows another embodiment of this invention using a reversion prism as the image rotator.
  • FIG. 1 shows a graphic artwork producing system embodying this invention and consisting of a photoexposure apparatus 10 and an associated automatic controller 12.
  • the apparatus 10 is in large part generally similar to a conventional X-Y plotter and includes a table defining a surface 14 for holding a piece of photosensitive material 16 having an upwardly facing light sensitive surface 17 on which lines are to be exposed, one such line being shown, for example, at 18.
  • a photoexposure device 20 is supported for movement above the supporting surface 14 in a plane parallel thereto.
  • the means for so supporting the device 20 includes a carriage 22 straddling the table and movable in the illustrated X coordinate direction by a lead screw 24 driven by an associated motor 26.
  • the device 20 in turn is attached to or part of a subcarriage movable in the illustrated Y coordinate direction along the main carriage 22 and is driven in such movement by a lead screw 28 powered by an associated motor 30.
  • the drive motors 26 and 30 are energized by appropriate signals from the controller 12 to cause the photoexposure device 20 to be driven simultaneously in the X and Y coordinate directions so as to follow any desired line on the photosensitive material 16.
  • the controller 12 also supplies other signals to the device 20 for controlling its operation as hereinafter described.
  • the photoexposure device 20 includes a light source 32 which may be either an arc lamp or an incandescent lamp.
  • a convex mirror 34 and a series of lenses 36, 38 and 40 light rays from this sourceare first caused to converge at a point 42 to produce a real image of the light source.
  • variable density filter disc 44 which is driven by a motor 46, in response to signals related to the speed of the light spot relative to the photosensitive surface 17, to vary the intensity of the light rays passing beyond the filter disc in accordance with the speed of the light spot to maintain proper exposure of the photosensitive surface at all light spot speeds.
  • the light rays are first deflected downwardly by a mirror 46 and then pass through a condensing lens 48.
  • an aperture wheel 50 carrying a plurality of apertures of different shapes and sizes arranged in an annular array, any one of which apertures may be positioned in operative position by indexing the aperture wheel about itscentral axis.
  • a motor 52 performs this indexing function.
  • the aperture wheel 50 is similar to the aperture wheel 98 shown and described in the aforesaid US. Pat. No. 3,330,182 which describes such wheel in detail.
  • the one aperture positioned in operative position below the condensing lens 48 serves to define the shape of the spot projected onto the light sensitive surface 17 and such shape, in addition to possibly being circular, may
  • the aperture wheel 50 is shown by way of example only and, if desired, various other means may be used to provide a spot shaping aperture.
  • a projecting lens 54 This lens may be either a single lens or a lens system, but for convenience is referred to herein as a lens.
  • the lens 54 has the operative aperture of the aperture wheel 50 as its object and the photosensitive surface 17 as its, image plane so that a light spot 53 is formed on the photosensitive surface which is in actuality a real image of the aperture.
  • a motorized shutter mechanism 56 is located above the projecting lens system 54 for interrupting the light rays passing to the projecting lens system 54 to turn the light spot on and off as desired.
  • the projecting lens 54, the operative aperture of the aperture wheel 50, and the photosensitive surface 17 form a simple optical imaging system for forming an image of the aperture (the object) on the photosensitive surface.
  • Between the aperture and the lens is a first zone of non-parallel light in which the rays emanating from any given point of the aperture are diverging, and between the lens and the photosensitive surface is a second zone of non-parallel light in which the rays emanating from any given point on the aperture are converg-
  • such device further includes a non-restricted image rotator.
  • This image rotator may be located in either of the two above-mentioned zones of non-parallel light, but preferably, and as shown, is located in the first zone between the aperture and the lens.
  • the image rotator is indicated generally at 58 in FIG. 2 and operates, in response to its own rotation, to rotate the light rays passing therethrough about the optical axis to vary the angular orientation of the light spot 53 relative to the photosensitive surface 17.
  • FIGS. 5 to 9 show in more detail the construction and operation of the non-restricted image rotator 58.
  • the illustrated image rotator comprises a mirror assembly 60 located within and carried by a barrel member 62.
  • This barrel member 62 is supported for movement about its vertical central axis 64 by two bearings 66, 66 located at opposite ends thereof and working between the barrel member and a part 68 of the main frame of the device 20.
  • Fixed to the lower end of the barrel member is an annular gear 70 which is driven through an idler gear 72 by a pinion 74 fixed to the output shaft of a motor 76.
  • the motor 76 is controlled by signals supplied thereto over the line 78 from the associated automatic controller 12 and is mounted on a bracket 80 forming part of the main frame.
  • the line 82 in FIG. 6 represents the optical axis of the light rays passing through the mirror assembly, and the barrel member 62 has its axis of rotation 64 aligned with those portions of the optical axis entering and leaving the mirror assembly.
  • the mirror assembly includes three planar reflecting surfaces which deflect the light rays passing therethrough in such a manner that their optical axis 82 is first deflected away from and then back to the center line 64, and as a result of this deflection when the reflecting surfaces are rotated in unison about the center line 64 the projected image or light spot 53 is also rotated about such center line.
  • the mirror assembly 60 is a non-restricted image rotator.
  • the three reflecting surfaces of the illustrated mirror assembly 60 are indicated, respectively, at 84, 86 and 88. All three of these surfaces are front surface mirrors by which is meant that they are specular surfaces formed on the exterior of the bodies defining them. Therefore, the light rays reflected by these surfaces do not pass through any part of the mirror bodies and are not subject to any refractance or internal energy absorption problems.
  • the two reflecting surfaces 84 and 88 are formed on a single mirror body and the reflecting surface 86 is formed on another mirror body 92.
  • the first reflecting surface 84 is arranged with its surface at an inclined angle to the center line 64, the second reflecting surface 86 is spaced from and parallel to the center line 64 and the third reflecting surface 88 is inclined to the center line 64 by the same angle as the surface 84 but in the opposite direction, all as shown in FIGS. 5 and 6.
  • the two lines a and b in FIG. 6 represent two light rays passing through the mirror assembly 60 and spaced on opposite sides of the optical axis 82 as viewed in FIG. 6.
  • these light rays In tracing the passage of these light rays through the mirror assembly, it will be noted that they are first reflected from the surface 84 to the surface 86 then to the surface 88, and then downwardly towards the photosensitive surface. As they leave the mirror assembly, however, the rays a and b are reversed relative to the optical axis 82 in comparison to the positions occupied when entering the mirror assembly. Therefore, it will be understood that the mirror assembly, as to rays located in a common plane perpendicular to all three reflecting surfaces, turns such rays about the center line 6.4.
  • FIG. 9 shows the two reflecting surfaces 84 and 88 of the mirror body 90 at this new position and also shows the same two rays a and b of FIG. 6 the common plane of which is now parallel to the plane of the reflecting surface 86. From consideration of FIG. 6, it will be apparent that as the light rays a and b now pass through the mirror assembly no rotation of them about the center line 64 occurs.
  • the mirror assembly may be rotated by an gular amounts equal to one-half the angular change of direction of the line of travel of the light spot relative to the photosensitive surface 17, and in response to such changes in the direction of the line of travel of the light spot.
  • the signals provided to the motor 58 from the controller 12 are programmed to be of such a nature as to achieve this desired rotation of the mirror assembly.
  • the reflecting surfaces 84, 86 and 88 be accurately positioned in the barrel member 62.
  • the two mirror bodies 90 and 92 in the illustrated device are both fixed to a first support member 94.
  • This first support member is in turn adjustably attached to an L-shaped second support member 96.
  • the member 96 includes three adjustment screws 98, 98, shown best in FIGS.
  • the member 94 is maintained resiliently in contact with the ends of the screws 98, 98 by a screw 100 threaded into the member 94, passing loosely through the member 96 and having a compression spring 102 working between its head and the member 96 as shown in FIG. 5. Therefore, it will be understood that by adjusting the three screws 98, 98 the member 94 may be moved along a vertical line, as viewed in FIG. 5, toward and away from the center line 64 and may also be tilted relative to such center line.
  • the second support member 96 is attached to the barrel member 62 by three adjustment screws 104, 104 which are threaded into the barrel member and which have their inner ends resiliently held in engagement with corresponding recesses in the member 96 by another screw 106 passing loosely through the barrel member, threaded into the member 96 and having a spring 108 working between the barrel member 62 and the head of the screw 106.
  • the second member 96 may be moved along a horizontal line, as viewed in FIG. 5, toward and away from the center line 64 and may also be tilted relative to the center line. Therefore, by combined adjustment of the adjustment screws 98, 98 and 104, 104 the reflecting surfaces 84, 86 and 88 may be quickly and easily brought into proper position relative to the center line 64.
  • the rotator also may, in accordance with the broader aspects of this invention, be provided by a prism wherein the light rays are reflected from internal surfaces of the prism either by total refractance or by reflectance from silvered surfaces.
  • a prism wherein the light rays are reflected from internal surfaces of the prism either by total refractance or by reflectance from silvered surfaces.
  • the light passing through the rotator it is necessary that the light passing through the rotator be reflected an odd number of times, and a number of different prisms under certain conditions are capable of performing this function.
  • a dove prism in a line drawing photoexposure device for achieving image rotation.
  • such a prism requires collimated light.
  • prisms may be used as image rotators and may be located in zones of non-parallel light without distorting the projected image.
  • Such prisms are referred to herein as non-restricted prisms.
  • Pechan prisms and reversion prisms have been found to serve particularly well as non-restricted image rotators.
  • the entrance and exit faces are perpendicular to the optical axis and this has been found to be important to the capability of the prism to perform satisfactorily in a nonparallel light zone.
  • FIGS. 10 and 11 show the image rotating mechanism of a photoexposure device which otherwise may be taken to be identical to the photoexposure device 20 described above, FIGS. 10 and 11 corresponding generally to FIGS. and 6 of the previously described embodiment.
  • the image rotating means of FIGS. 10 and 11 is similar to that of FIGS. 5 and 6 except for using as the basic image rotator a Pechan prism in place of the mirror assembly 60.
  • the Pechan prism 110 is fixed, as by cement, to a plate 112 which takes the place of the L- shaped bracket 94 of FIG. 5.
  • the mounting means and the means for rotating the prism 110 are the same as that for the mirror assembly 60 of FIG. 5.
  • the dotted line shows the path of the optical axis of the light rays in passing through the Pechan prism 110.
  • the prism has an entrance face 116 which is perpendicular to the optical axis 114 and an exit face 118 which is also perpendicular to the optical axis.
  • the Pechan prism actually consists of two separate bodies 120 and 122 which are separated from one another along the plane 124, with the surfaces 126 and 128 being silvered. Therefore, light rays in passing through the prism are reflected five times.
  • FIG. 12 is similar to FIG. 11 but shows a reversion prism 130 used as the basic image rotating member.
  • all of the parts are the same as those shown in FIGS. 10 and 11 except for the reversion prism 130 of FIG. 12 being substituted for the Pechan prism 110 of FIGS. 10 and 11. Therefore, the parts of FIG. 12 which are similar to corresponding parts of FIGS. 10 and 11 have been given the same reference numerals as in FIGS. 10 and 11 and need not be further described.
  • the dotted line 132 represents the path taken by the optical axis in passing through the reversion prism 130 and it will be noted that such path is reflected three times in passing through the prism.
  • the prism has entrance and exit surfaces 134 and 136 respectively which are arranged perpendicular to the optical axis.
  • a photoexposure mechanism for exposing lines on a photosensitive surface by means of a light spot moved thereover, said mechanism comprising means defining a supporting surface for supporting a piece of material having a photosensitive surface, and a photoexposure device supported for movement relative to said supporting means in a plane generally parallel to said supporting surface, said photoexposure device comprising an aperture, means for illuminating said aperture, and an optical imaging system for forming an image of said aperture on said photosensitive surface which image is a substantially undistored optical reproduction of said aperture and constitutes the aforesaid spot which is moved over said photosensitive surface to expose lines thereon as a result of movement of said photoexposure device relative to said supporting surface, the path of light rays through said optical imaging system including at least one zone of non-parallel light rays, and an image rotator capable of rotating said non-parallel light rays, said image rotator being located in said zone of non-parallel light rays for rotating said image relative.
  • said imaging system comprising a lens located between said aperture and said photosensitive surface and said image rotator being located between said aperture and said lens, said image rotator comprising a mirror assembly defining an odd number of planar reflecting surfaces encountered successively by a light ray passing through said assembly and arranged to deflect such a ray traveling along the optical axis of said rays firstaway from and then eventually back to a straight line colinear with said optical axis as said optical axis enters said mirror assembly, and means for rotating said mirror assembly about said given straight line, said photoexposure device also including a first support member to which said mirror assembly is fixed, a second support member, means attaching said first support member to said second support member and permitting said first support member to be manually adjusted relative to said second member to shift said first support member toward and away from said given straight line along a first line perpendicular to said straight line and to vary the inclination of said first support member relative to said straight line in the plane defined by said first line and said given straight line, a third
  • a photoexposuremechanism as defined in claim 1 further characterized by said third support member being a barrel member having its axis generally aligned with said given straight line, and two bearings located respectively at opposite ends of said barrel member for rotatably supporting said barrel member relative to said main frame, said first support member, said second support member and said mirror assembly being located within said barrel member generally between said two bearings.
  • a photoexposure mechanism for exposing lines on a photosensitive surface by means of a light spot moved thereover, said mechanism comprising means defining a supporting surface for supporting a piece of material having a photosensitive surface, and a photoexposure device supported for movement relative to said supporting means in a plane generally parallel to said supporting surface, said photoexposure device comprising an aperture, means for illuminating said aperture, and an optical imaging system for forming an image of said aperture on said photosensitive surface which image is a substantially undistorted optical reproduction of said aperture and constitutes the afore-said spot which is moved over said photosensitive surface to expose lines thereon as a result of movement of said photoexposure device relative to said supporting surface, the path of light rays through said optical imaging system including at least one zone of non-parallel light rays, and an image rotator capable of rotating said non-parallel light rays, said image rotator being located in said zone of non-parallel light rays for rotating said image relative to said photosensitive surface, said image rotator
  • a photoexposure mechanism for exposing lines on a photosensitive surface by means of a light spot moved thereover said mechanis m comprising means defining a supporting surface surface, and a photoexposure device supported for movement relative to said supporting means in a plane generally parallel to said supporting surface, said photoexposure device comprising an aperture, means for illuminating said aperture, and an optical imaging system for forming an image of said aperture on said photosensitive surface which image is a substantially undistorted optical reproduction of said aperture and constitutes the afore-said spot which is moved over said photosensitive surface to expose lines thereon as a result of movement of said photoexposure device relative to said supporting surface, the path of light rays through said optical imaging system including at least one zone of non-parallel light rays, and an image rotator capable of rotating said non-parallel light rays, said image rotator being located in said zone of non-parallel light rays for rotating said image relative to said photosensitive surface, said image rotator comprising a reversion pris
  • a photoexposure mechanism for exposing lines on a photosensitive surface by means of a light spot moved thereover, said mechanism comprising means defining a supporting surface for supporting a piece ofmaterial having a photosensitive surface, and a photoexposure device supported for movement relative to said supporting means in a plane generally parallel to said supporting surface, said photoexposure device comprising an aperture, means for illuminating said aperture, and an optical imaging system for forming an image of said aperture on said photosensitive surface which image is a substantially undistorted optical reproduction of said aperture and constitutes the afore-said spot which is moved over said photosensitive surface to expose lines thereon as a result of movement of said photoexposure device relative to said supporting surface, the path of light rays through said optical imaging system including at least one zone of non-parallel light rays, and an image rotator capable of rotating said non-parallel light rays, said image rotator being located in said zone of non-parallel light rays for rotating said image relative to said photosensitive surfaces, said image rotator
  • said means for rotating said prism including means mounting said third support member to said main frame for rotation relative to said main frame about said given straight line.
  • a photoexposure device as defined in claim 5 further characterized by said third support member being a barrel member having its axis generally aligned with said given straight line, and two bearings located respectively at opposite ends of said barrel member for rotatably supporting said barrel member relative to said main frame, said first support member, said second support member and said prism being located within said barrel member generally between said two bearings.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Projection-Type Copiers In General (AREA)
US00274797A 1972-07-24 1972-07-24 Line drawing photoexposure device with image rotating means Expired - Lifetime US3848520A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00274797A US3848520A (en) 1972-07-24 1972-07-24 Line drawing photoexposure device with image rotating means
GB1824073A GB1385165A (en) 1972-07-24 1973-04-16 Line drawing photoexposure device with image rotating means
DE2328096A DE2328096A1 (de) 1972-07-24 1973-06-01 Strichzeichnung-belichtungsvorrichtung mit bilddreheinrichtung
JP6787873A JPS5340459B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-07-24 1973-06-18
FR7323837A FR2197476A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-07-24 1973-06-29

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US00274797A US3848520A (en) 1972-07-24 1972-07-24 Line drawing photoexposure device with image rotating means

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US3848520A true US3848520A (en) 1974-11-19

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JP (1) JPS5340459B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2328096A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2197476A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1385165A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456962A1 (fr) * 1979-05-14 1980-12-12 Gerber Scientific Instr Co Appareil de trace en couleurs
DE3316520A1 (de) * 1982-05-07 1983-11-10 The Gerber Scientific Instrument Co., 06074 South Windsor, Conn. Positioniervorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1523032A (en) * 1976-03-03 1978-08-31 Crosfield Electronics Ltd Image reproducing apparatus
US4231659A (en) * 1979-04-11 1980-11-04 The Gerber Scientific Instrument Company Method of making an overlay mask and a printing plate therefrom
US4249808A (en) * 1979-08-10 1981-02-10 The Gerber Scientific Instrument Company Photoplotting in color with exposure budgeting
JPS6039899A (ja) * 1983-08-15 1985-03-01 ファナック株式会社 櫛形接続線を用いたプリント配線板の接続方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406798A (en) * 1944-01-26 1946-09-03 Standard Telephones Cables Ltd Direction finder
US2602385A (en) * 1946-06-12 1952-07-08 Reliephographie Soc Pour L Exp Static apparatus for parallax stereogram photography
US3323414A (en) * 1963-06-06 1967-06-06 Ritchie David Scarth Apparatus for automatically copying lines
US3458253A (en) * 1966-08-31 1969-07-29 Eltra Corp Photographic drafting machines
US3574459A (en) * 1967-08-24 1971-04-13 Agfa Gevaert Ag Optical copying apparatus
US3582203A (en) * 1968-08-06 1971-06-01 Bell & Howell Co Optical zoom and image-rotating system
US3648578A (en) * 1969-09-10 1972-03-14 Barr & Stroud Ltd Apparatus for automatically drawing lines
US3688655A (en) * 1969-10-18 1972-09-05 Philips Corp Method of, and apparatus for, writing mask patterns on photographic material by means of light

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27265A (en) * 1860-02-28 Improvement in paint-cans

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406798A (en) * 1944-01-26 1946-09-03 Standard Telephones Cables Ltd Direction finder
US2602385A (en) * 1946-06-12 1952-07-08 Reliephographie Soc Pour L Exp Static apparatus for parallax stereogram photography
US3323414A (en) * 1963-06-06 1967-06-06 Ritchie David Scarth Apparatus for automatically copying lines
US3458253A (en) * 1966-08-31 1969-07-29 Eltra Corp Photographic drafting machines
US3574459A (en) * 1967-08-24 1971-04-13 Agfa Gevaert Ag Optical copying apparatus
US3582203A (en) * 1968-08-06 1971-06-01 Bell & Howell Co Optical zoom and image-rotating system
US3648578A (en) * 1969-09-10 1972-03-14 Barr & Stroud Ltd Apparatus for automatically drawing lines
US3688655A (en) * 1969-10-18 1972-09-05 Philips Corp Method of, and apparatus for, writing mask patterns on photographic material by means of light

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456962A1 (fr) * 1979-05-14 1980-12-12 Gerber Scientific Instr Co Appareil de trace en couleurs
DE3316520A1 (de) * 1982-05-07 1983-11-10 The Gerber Scientific Instrument Co., 06074 South Windsor, Conn. Positioniervorrichtung
US4589746A (en) * 1982-05-07 1986-05-20 The Gerber Scientific Instrument Company Dual-axis, single mirror interferometer measuring system

Also Published As

Publication number Publication date
JPS5340459B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-10-27
GB1385165A (en) 1975-02-26
JPS4965220A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-25
DE2328096A1 (de) 1974-02-14
FR2197476A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-03-22

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