Illumination – Light source and modifier – Plural serial lens elements or components
Reexamination Certificate
1999-09-01
2001-08-21
Sember, Thomas M. (Department: 2875)
Illumination
Light source and modifier
Plural serial lens elements or components
C362S282000, C362S319000, C362S322000, C362S283000, C362S147000
Reexamination Certificate
active
06276816
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a radiation-deflecting system, in particular to a lighting system, having at least one radiation source (a light source) which emits parallel radiation (a light beam).
Although in the case of the invention it is the field of application of a lighting system that is mainly in the foreground, in accordance with the principles of the invention other kinds of radiation, such as infrared radiation or the like, can also be redirected in a spatially distributed manner and be branched off.
2. Description of the Related Art
In the case of the main field of application of lighting, previously in the rooms, halls or the like to be illuminated it was usual to provide lighting means which are to be connected to a corresponding power source and the corresponding switching devices. For this purpose, it was necessary to lay electric power lines to the desired connection points for the lighting means, which lines always had to be relaid when spatial changes were made. In the case of the usual design forms for the lighting, the current was sent to the lights or lighting means so that a plurality of corresponding current terminals in accordance with the number of lighting means and lighting fixtures to be provided were required. This is not only troublesome, but also time-consuming and in particular it is questionable whether utilization is effective and energy-conscious in this connection.
In comparison with this, the invention aims to provide a radiation-deflecting system, in particular a lighting system, which permits utilization that is comparatively favourable in terms of energy and which also permits flexibility, even when it is applied in large spaces or when the distances that are to be covered are long.
SUMMARY OF THE INVENTION
In accordance with the invention to this end a radiation-deflecting system, in particular a lighting system, is provided that has at least one radiation source (a light source) emitting parallel radiation (a light beam) and which is distinguished by the fact that arranged so as to be spaced apart in the path of radiation of the radiation source there are a plurality of mirrors, which can be rotated about the radiation axis and which are preferably exchangeable, as radiation-distributing elements that direct a portion of the radiation (of the light) to predetermined desired locations. In the case of the radiation-deflecting system in accordance with the invention the radiation or the light is transmitted from one single or common radiation source or light source to the radiation-distributing element formed as a spot and the current for the individual lighting means is not used as the energy carrier. What is important in the case of the system in accordance with the invention is the fact that a, for example, selectable portion of the parallel radiation delivered by the radiation source is branched off and directed to a desired location by means of a plurality of partially transparent mirrors, whilst the remaining portion of the radiation passes through the partially transparent mirror without hindrance and is transmitted to a further partially transparent mirror. As a result, in the case of the radiation-deflecting system in accordance with the invention it suffices to install one common radiation source, such as, for example, one light source, at a suitable location, whilst the corresponding forms of illumination for a lighting system are then effected by means of so-called radiation-distributing elements which comprise a partially transparent mirror as an important component thereof. As a result of choosing the degree of transparency of the partially transparent mirror in a corresponding manner, a correspondingly desired and necessary portion of the parallel radiation coming from the radiation source can be branched off to a desired location in each case. In particular, even in the case of renovation work and also the extension and re-building of buildings and other facilities, in this connection electrical installation work can be substantially reduced and no individual electrical lines to the lighting means need to be laid with great outlay either, since the common radiation source or light source is arranged and installed centrally at a suitable location. In addition, this system is not only flexible, but also easy to maintain, since after installation the maintenance work that is required is restricted to the installation location of the radiation source.
In the case of the radiation-deflecting system in accordance with the invention at least one optical element, which, if applicable, is exchangeable, such as a lens, filter, slide or the like, can preferably be connected downstream of each partially transparent mirror representing the core item of the radiation-distributing element. With the aid of these additional devices in the form of variable optical elements, the partial beam branched off by means of the partially transparent mirror can be concentrated or diffused and corresponding colour effects can be achieved with the aid of colour filters, or else slides in the branched-off path of radiation can be projected onto a desired location. These optical elements connected downstream of the partially transparent mirror can be selected freely as a function of the desired requirements and factors that exist in each case.
The respective partially transparent mirror can preferably be rotated about two axes which enclose an angle of 90° in relation to each other, with the one axis pointing in the direction of the supply beam and the angle of the mirror being variable in relation to the supply beam in the other axial direction so that, on the one hand, the semi-transparent mirror can be rotated and swivelled about the radiation axis of the parallel radiation and, on the other hand, furthermore, its angle can be changed in such a way that the partial radiation branched off herewith can be directed at the desired locations in a spatially variable manner.
In order to rotate the respective partially transparent mirror about the radiation axis, that is, the aforementioned first axis, a supporting and guiding device, which is curved and in particular is formed so as to be substantially semicircular, is preferably provided. This is configured in such a way that a range of rotation and swing that is as great as possible is covered thereby in a variable manner and yet an optically responsive configuration is still provided. This supporting and guiding device is preferably formed from a triangular profiled material.
In particular in accordance with the invention the radiation-deflecting system is designed in such a way that the supporting and guiding device can be mounted on a fixed surface, such as a wall, ceiling or the like, preferably by way of a telescopic connection. This telescopic connection is thus used so that the supporting and guiding device can be arranged at, in each case, a desired and variable distance away from a fixed surface in order to render possible fine adjustment of the arrangement in accordance with the invention.
For the purpose of fixing the position of the telescopic connection and the supporting and guiding device, an eccentric device is preferably provided so that the supporting and guiding device can be aligned and fixed in a reliable manner in the desired position in each case. In particular, such a connection makes it possible for the position to be fixed in a variable manner and the position can also be changed subsequently.
Advantageously, the optical elements, which are connected downstream of the partially transparent mirror, are mounted on a support in an adjustable manner. This support is preferably formed as a receiving rail. In this way, the position of the optical elements that are connected downstream of the partially transparent mirror and their coordination therewith can be changed and in particular it is also possible to exchange said optical elements so that the optical elements that are desired in each case can be selected and put together as a fun
Dozsa-Farkas Andras
Fleckenstein Sybille
Fitzpatrick ,Cella, Harper & Scinto
Sember Thomas M.
Zumtobel Staff GmbH
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