Illumination – Plural light sources – With modifier
Patent
1988-05-02
1989-11-21
Husar, Stephen F.
Illumination
Plural light sources
With modifier
362231, 362806, 362811, F21V 1300
Patent
active
048826618
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The present invention concerns an illuminating instrument, in other words an instrument which is intended to be controlled by an operator and to produce lights which vary or fluctuate. Such an instrument allows the composition of light divisions which can then be played repeatedly by interpreters or expositors, in the same manner as a pianist executes a musical piece which has been composed beforehand. The instrument can also be played automatically, by programmed control, in the same manner as a mechanical piano or a street organ.
To comprehend the invention, it is useful to consider a parallel between the domain of music and that of light and color.
In the musical domain, obviously after the basic components of rhythm or dynamics and the association of sounds, there exist only two fundamental parameters, the frequency and the intensity of any one sound. These parameters and components together define a "plan" in which a sound may be defined by one point. However, it is difficult to obtain pure sounds and, in practice, instruments have been developed which each give associations of sounds characteristic of very individualized musical concordances. One single piece of music gives very different effects on different instruments.
In the domain of lights, the fundamental parameters which are at the disposal of the user are more numerous since they are three in number: they define a "space" in which a "light" is defined by a point (this space is known as the "Munsell color system"). Of course, secondary parameters analogous to those of the musical domain are also present in the domain of lights: association of lights (spectrum), dynamic characteristics (growth and decline).
This analogy between music and "lights" however is not so simple as has been indicated and it is intended solely for understanding of the diversity of the possible commands in a light instrument, a diversity which is a great deal more extensive than in the musical domain.
Just the same as an apparatus capable only of emitting sounds is not a musical instrument (it is the respect for certain conditions which gives its musical character to a sequence of sounds), an apparatus capable of emitting lights is not necessarily a light instrument. In fact, it is the condition of the selection of the lights and their variations which make that instrument a light instrument and a genuine instrument allowing artistic expression.
It is possible to consider that a television monitor is a light instrument of the bidimensional type, to the extent that the images formed satisfy the conditions of selection. When a television monitor reproduces an image filmed directly with the aid of a camera, it does not constitute a true light instrument since it is occupied solely with restitution of a scene of which the camera avails itself in its totality. On the other hand, when the camera is used to display a synthesized image, the assembly comprising the monitor and the means which have been used to create this synthesized image constitute a light instrument.
It is known that the synthesis of television images is a considerable practice requiring considerable technical skill, given the very large number of points to be defined in one single image. This work becomes inordinate when a truly animated or enhanced program must be realized because it requires several tens of images per second. It is therefore obvious that the operator of such a system cannot "play" the instrument in real time since months of work are required for creation of a short sequence of a few seconds. The route of television synthesis of images then does not permit the realization of a light instrument which can be played in real time.
The known instruments to give a play of light often call attention less to the artistic domain than to that of advertising.
PRIOR TECHNOLOGY
Apparatuses are already known which comprise light source which are not very extended, are in pinpoints or are linear. The most current are those constituted by gas discharge signs. These sign
REFERENCES:
patent: 3564332 (1971-02-01), Blakeslee
patent: 3694645 (1972-09-01), Brantz
patent: 3790772 (1974-02-01), Newman et al.
patent: 3805049 (1974-04-01), Frank et al.
patent: 4386916 (1983-06-01), Beal
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