Patents Assigned to Dedo Weigert Film GmbH
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Patent number: 7497603Abstract: A lighting unit includes a device for an attachment of a softbox, wherein the device for the attachment of the softbox has at least three hollow cylinders serving as receptacles of one softbox rod, wherein each of the at least three hollow cylinders is slidable in a direction of a longitudinal axis of the respective hollow cylinder, each of the at least three hollow cylinders acting in concert with a locking device to be manually settable in a locked position and an adjustable position without additional tools, wherein in the locking position, the locking device locks the hollow cylinder into at least one position, and in the adjustable position, the hollow cylinder is slidbale in the direction of the longitudinal axis to a different position.Type: GrantFiled: April 10, 2006Date of Patent: March 3, 2009Assignee: Dedo Weigert Film GmbHInventor: Todor Angelov Malkanov
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Patent number: 7347588Abstract: A spotlight having a variable angle of radiation includes a light source and a converging lens. The converging lens is the front lens of the spotlight. The front lens is eccentrically arranged such that the principal optical axis of the front lens is not coincident with the principal optical axis of the spotlight. For example, the principal optical axis of the front lens is parallel to and spaced from the principal optical axis of the spotlight by a predetermined distance.Type: GrantFiled: June 23, 2005Date of Patent: March 25, 2008Assignee: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Publication number: 20050286249Abstract: A spotlight having a variable angle of radiation includes a light source and a converging lens. The converging lens is the front lens of the spotlight. The front lens is eccentrically arranged such that the principal optical axis of the front lens is not coincident with the principal optical axis of the spotlight. For example, the principal optical axis of the front lens is parallel to and spaced from the principal optical axis of the spotlight by a predetermined distance.Type: ApplicationFiled: June 23, 2005Publication date: December 29, 2005Applicant: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Patent number: 6575598Abstract: A spotlight has a curved reflector (1, 1′) and a lamp (2, 2′) arranged inside a cavity formed by the reflector (1, 1′). The lamp (2, 2′) and the reflector (1, 1′) are movable relative to one another in a direction of a main optical axis of the spotlight. A converging lens (5) is arranged in front of the reflector (1, 1′) in a direction of light emission. A dispersive lens (6) is arranged between the reflector (1, 1′) and the converging lens (5).Type: GrantFiled: December 18, 2001Date of Patent: June 10, 2003Assignee: Dedo Weigert Film GmbHInventors: Dedo Weigert, Depu Chin
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Patent number: 6499862Abstract: A spotlight has an adjustable angle of radiation with modification of the angle of radiation being achieved in a manner other than by shading a beam path with a screen or mask. The spotlight has an interior light source (4) and a first lens (2) that is structured as a front lens. The first lens (2) is an aspherical lens.Type: GrantFiled: January 18, 2000Date of Patent: December 31, 2002Assignee: Dedo Weigert Film GmbHInventors: Dedo Weigert, Depu Chin
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Patent number: 6004007Abstract: A spotlight with an adjustable angle of radiation has a light source (4) and a reflector (5) associated with the light source (4). A first focusing lens (2) is positioned in a beam path of the light source-reflector combination (4, 5). A second focusing lens (6) is placed in the beam path between the light source (4) and the first focusing lens (2). The reflector (5), the light source (4), and the second focusing lens (6) are mounted as an optical unit that is movable relative to the first focusing lens (2), along an optical axis of the spotlight along which the beam path extends. Inside the optical unit, a distance between the light source (4) and the second focusing lens (6) is adjustable. In addition, inside the optical unit a distance between the light source (4) and the reflector (5) is adjustable.Type: GrantFiled: December 4, 1997Date of Patent: December 21, 1999Assignee: Dedo Weigert Film GmbHInventor: Dedo Arndt Weigert
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Patent number: 5954415Abstract: An illuminating apparatus includes a light source (1) and a first reflector (2) arranged for reflecting light emitted by the light source. A three-dimensional attachment is mounted on the first reflector along a direction in which the first reflector reflects. The attachment has a sidewall (6) with a light-transmitting and scattering portion. A panel (7) of the attachment, positioned opposite the first reflector is, opaque. The illuminating apparatus further has a second reflector (3) with a hollowed-segmented sphere shape. The second reflector is positioned between the light source and the opaque panel of the attachment positioned opposite the first reflector. The second reflector (3) is smaller than the first reflector and has a reflecting concave surface facing the light source. The illuminating apparatus is compact, emits diffused light, and displays a bat-wing characteristic light distribution.Type: GrantFiled: September 20, 1996Date of Patent: September 21, 1999Assignee: Dedo Weigert Film GmbHInventor: Dedo Arndt Weigert
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Patent number: 5795057Abstract: An asymmetrical lamp has a main lens (2), a reflector (3) and at least one light source arranged between the reflector (3) and the main lens (2). In order to achieve a uniform illumination of all areas of an object, even when the lamp is not positioned on an axis extending 90.degree. to the object, the light source (1) and the reflector (3) are offset from an optical axis (6) of the main lens (2). The main axes (4, 5) of the light source (1) and the reflector (3) are, further, inclined to the optical axis (6) of the main lens (2). Preferably, the offset of the light source (1) and the reflector (3) relative to the optical axis (6) of the main lens (2), and the inclination of the main axes (4, 5) of the light source (1) and the reflector (3) to the optical axis (6) of the main lens (2), is adjustable so that the lamp can be optimally adjusted. In one embodiment an additional lens (7) is included between the light source and the main lens.Type: GrantFiled: March 20, 1997Date of Patent: August 18, 1998Assignee: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Patent number: 5674001Abstract: An asymmetrical lamp has a main lens (2), a reflector (3) and at least one light source arranged between the reflector (3) and the main lens (2). In order to achieve a uniform illumination of all areas of an object, even when the lamp is not positioned on an axis extending 90.degree. to the object, the light source (1) and the reflector (3) are offset from an optical axis (6) of the main lens (2). The main axes (4, 5) of the light source (1) and the reflector (3) are, further, inclined to the optical axis (6) of the main lens (2). Preferably, the offset of the light source (1) and the reflector (3) relative to the optical axis (6) of the main lens (2), and the inclination of the main axes (4, 5) of the light source (1) and the reflector (3) to the optical axis (6) of the main lens (2), is adjustable so that the lamp can be optimally adjusted.Type: GrantFiled: April 17, 1995Date of Patent: October 7, 1997Assignee: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Patent number: 5418694Abstract: A gate for a lamp which is particularly suited for illuminating rectangular objects comprises a holding element defining a light-passage opening which can be mounted on the lamp. Four gate wings are mounted on the holding element about the light-passage opening for defining a gate opening having substantially the approximate shape of an even-leg, or isosceles, trapezoid.Type: GrantFiled: January 3, 1994Date of Patent: May 23, 1995Assignee: Dedo Weigert Film GmbHInventor: Dedo A. Weigert
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Patent number: 5313380Abstract: A lighting assembly has a grid (5) arranged to be adjustable at a light outlet of a housing (1). In one embodiment, there is a plurality of grids (4, 5, 6), preferably arranged one behind the other in a direction of light rays, which are movable relative to one another. When the position of a grid (5) of such a lamp assembly is adjusted, a light emission angle of the lighting assembly is adjusted. When, in a preferred embodiment, slats of the grids are arranged in true alignment to one another, a light emission angle is relatively small. By adjusting the grids, for example by one half step adjustments relative to one another, the light emissions angle is enlarged accordingly. Thus, a directional effect can be achieved without a focussing effect, even with the use of fluorescent tubes.Type: GrantFiled: May 4, 1993Date of Patent: May 17, 1994Assignee: Dedo Weigert Film GmbHInventor: Dedo A. Weigert
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Patent number: 5088812Abstract: A high-frequency movie camera has a sprocket wheel for supporting and transporting of a film. A rotating prism is positioned opposite to the perimeter of the sprocket wheel and is driven by the combination of a gear located on the sprocket wheel shaft and a pinion intermeshing with the gear and attached to the rotating prism shaft. In order to avoid moves caused by the necessary clearance between the gear and pinion, an electromagnetic brake is positioned on the rotating prism shaft, which is automatically controlled to limit the prism rotational speed.Type: GrantFiled: March 22, 1991Date of Patent: February 18, 1992Assignee: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Patent number: 4702577Abstract: A film transport device for cinematographic cameras and projectors has a rotary shutter, an intermittently operating film feed device, an adjusting device with at least one adjusting pin engaging in one perforation of the film and separate drive motors for the rotary shutter, adjusting device and film feed device and is further characterized by having the drives for both the adjusting device and for the film feed controlled synchronously with the rotary shutter by a common control unit.Type: GrantFiled: May 23, 1986Date of Patent: October 27, 1987Assignee: Dedo Weigert Film GmbHInventor: Dedo Weigert
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Patent number: 4646146Abstract: A surveillance device consists of a video camera, a shutterless objective, a transmission optic element with an automatically controlled cat's eye shutter, and reflecting mirrors, for projecting an intermediate image generated by the objective into the video camera. The objective can swivel about both axes of the image, while a deflecting mirror is coupled to the objective in such a way that the intermediate image is always located in the same place.Type: GrantFiled: January 3, 1985Date of Patent: February 24, 1987Assignee: Dedo Weigert Film GmbHInventors: Frederick DeHubry, Gunter Knon
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Patent number: D623327Type: GrantFiled: October 26, 2009Date of Patent: September 7, 2010Assignee: Dedo Weigert Film GmbHInventor: Todor Angelov Malkanov