Projecton device for projecting an image onto a projection surface, and a projection unit for coupling to a projector
First Claim
1. A projection arrangement for projecting an image onto a projection surface (34), said arrangement comprising a light source (26), a film stage (2), arranged following the light source, for holding a positive image recorded on a carrier medium, and projection optics (3) for projecting a illuminated positive image, characterized by a control unit (25), a light modulator (10), which is controllable by said control unit in order to generate an additional image on the basis of predetermined image data, an optical device (11), arranged following said light modulator, for projecting said additional image onto the projection surface (34), and by a beam splitter (6), arranged between the light source (26) and the film stage (2), for splitting the light from the light source (26) into a first partial beam directed to the film stage (2) in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator (10).
1 Assignment
0 Petitions
Accused Products
Abstract
A projection arrangement for projecting an image onto a projection surface, said arrangement comprising a light source (26), a film stage (2), arranged following said light source, for holding a positive image recorded on a carrier medium, and projection optics (3) for projecting a illuminated positive image, is provided with a control unit (25), a light modulator (10) controllable by said control unit in order to generate an additional image on the basis of predetermined image data, said light modulator being followed by an optical device (11) for projecting the additional image onto the projection surface (34), and with a beam splitter (6) arranged between the light source (26) and the film stage (2) so as to split the light from the light source (26) into a first partial beam directed to the film stage (2) in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator (10). Thus, a projection arrangement is provided which allows to project additional images, such as subtitles, in addition to the illuminated positive image.
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Citations
15 Claims
- 1. A projection arrangement for projecting an image onto a projection surface (34), said arrangement comprising a light source (26), a film stage (2), arranged following the light source, for holding a positive image recorded on a carrier medium, and projection optics (3) for projecting a illuminated positive image, characterized by a control unit (25), a light modulator (10), which is controllable by said control unit in order to generate an additional image on the basis of predetermined image data, an optical device (11), arranged following said light modulator, for projecting said additional image onto the projection surface (34), and by a beam splitter (6), arranged between the light source (26) and the film stage (2), for splitting the light from the light source (26) into a first partial beam directed to the film stage (2) in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator (10).
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15. A projection unit for coupling to a projector, which projector comprises a light source (26), a film stage (2), arranged following said light source, for holding a positive image recorded on a carrier medium, as well as projection optics (3) for projecting a illuminated positive image onto a projection surface (34), said projection unit comprising a control unit (25), a light modulator (10) controllable by said control unit in order to generate an additional image on the basis of predetermined image data, an optical device (11), arranged following the light modulator (10), for projecting the additional image onto the projection surface (34), and a beam splitter (6), wherein the beam splitter (6), when the projection unit is coupled to the projector, is arranged between the light source (26) and the film stage (2) and splits the light from the light source (26) into a first partial beam directed to the film stage in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator (10).
Specification