Abstract:
An apparatus (1) for projecting images in sequence comprises a light source arranged in such a way as to direct a light beam in a direction of projection, a plurality of filters (4) with impressed shapes, able to project images corresponding to said shapes when traversed by the light beam, a conveyor element (5) defining a closed line, movable in continuous cycle, the filters (4) being associated to the conveyor element in such a way as to intercept the light beam to generate an animated effect in the projection; the conveyor (5) defines a line having at least one rectilinear segment arranged in such a way that the filters (4) intercept the light beam moving along a straight line perpendicular to the light beam. The projections can be of planar geometric shapes applicable to any lighting apparatus. In projection apparatuses currently in use, the animated effects obtained by moving filters have poor effectiveness, because the filters are constrained to move with circular trajectory.
Abstract:
An improved overhead projector which allows for automated feeding of transparencies from input and output trays (38, 44) positioned within a body of the projector. The feed mechanism (32) is reversible to allow previously viewed transparencies to be repositioned over a light source on a table and seen on a screen. The trays (38, 44) include retractable mechanisms allowing them to be switched from receiving or delivering transparencies into a feed path. An optical projection head (28) includes an adjustable mechanism to automatically orient an image for transparencies in landscape or portrait views. The adjustable mechanism includes a first mirror which is adjustable to reflect light directly to the screen or to allow the image to be reflected by second and third mirrors before reflecting off the first mirror towards the screen.
Abstract:
Projector intended to show slides on a screen. Series of slides are hingedly interconnected. A band-like series of slides is arranged between a light source and a lens to be displaced along the series of slides to project a slide one after the other on the screen. If the slides of a series have been shown, the chain is displaced from one position in order to bring the next series of slides instead of the preceding one between the light source and the lens. The present invention includes a particularly useful solution to form, from a plurality of series of slides, chains comprised of a plurality of hingedly interconnected series.
Abstract:
An apparatus (1) for projecting images in sequence comprises a light source arranged in such a way as to direct a light beam in a direction of projection, a plurality of filters (4) with impressed shapes, able to project images corresponding to said shapes when traversed by the light beam, a conveyor element (5) defining a closed line, movable in continuous cycle, the filters (4) being associated to the conveyor element in such a way as to intercept the light beam to generate an animated effect in the projection; the conveyor (5) defines a line having at least one rectilinear segment arranged in such a way that the filters (4) intercept the light beam moving along a straight line perpendicular to the light beam; the filters (4) are arranged on the conveyor element (5) in such a way that each filter (4) has lateral portions overlapped to correspondent lateral portions of the adjacent filters (4), in its movement along said rectilinear portion of the conveyor element.
Abstract:
A method and a device for presentation of information on a plurality of sheetshaped information carriers (5) which are connected to each other in a continuous series of the sheets which are folded relative each other so that the series of sheets extends zig-zag like and forms in a storage a pack of sheets in which the sheets are connected to each other and from which the sheets can be folded out for presentation of information on the sheets. One of the outer sheets (5) of the pack is placed with an interspace relative to the pack, which is substantially a multiple, larger than 1, of the width of each sheet between said folding lines. In this way at least two sheets at a time can be held unfolded on a base in said interspace for the purpose of presentation. The series of sheets can consecutively be brought over to the outer sheet, forming a new pack during a consecutive positioning of the sheets in the interspace for the presentation. This is accomplished by the unfolded sheets in said interspace by means of folding are brought over to the new pack.