U.S. patent number 3,816,739 [Application Number 05/282,613] was granted by the patent office on 1974-06-11 for illuminating device.
Invention is credited to Michael Stolov.
United States Patent |
3,816,739 |
Stolov |
June 11, 1974 |
ILLUMINATING DEVICE
Abstract
An illuminating device for providing illumination of any desired
colour, intensity and saturation, which may be remotely controlled,
comprises a housing of matte transluscent material, one or more
groups of light sources disposed within the housing, each group
including a red light source, a blue light source and a green light
source and light dimmers for individually controlling the intensity
of each of the light sources to thereby select the colour and
intensity of illumination of the device.
Inventors: |
Stolov; Michael (Herzilya,
IL) |
Family
ID: |
23082295 |
Appl.
No.: |
05/282,613 |
Filed: |
August 21, 1972 |
Current U.S.
Class: |
362/231; 40/581;
362/233; 362/810 |
Current CPC
Class: |
F21S
10/02 (20130101); F21V 23/0435 (20130101); G09F
13/28 (20130101); G09F 19/12 (20130101); Y10S
362/81 (20130101) |
Current International
Class: |
G09F
13/00 (20060101); G09F 13/28 (20060101); G09F
19/12 (20060101); F21S 10/00 (20060101); F21V
23/04 (20060101); F21S 10/02 (20060101); A47g
033/00 (); F21p 003/00 () |
Field of
Search: |
;240/3,3.1,1R,1T,10.1
;315/194,195,294,295,299,250 ;40/13R,13C,13N,13F,13L,132C |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Peters; Joseph F.
Attorney, Agent or Firm: Weingarten, Maxham &
Schurgin
Claims
What is claimed is:
1. An illuminating device for providing illumination of selectable
substantially uniform intensity and colour at the exterior surface
of a translucent body of rotation comprising:
a housing of translucent material in the form of a body of
rotation, said translucent material glowing in response to
illumination thereof;
a least three substantially identical clusters of light sources,
the sources in each cluster including respectively the primary
colours red, blue and green;
said red, blue and green light sources in said clusters being
disposed symmetrically about at least one axis of said housing in
predetermined spaced relationship to said body of rotation to
provide an unobstructed light path between substantially every
point on the surface of said housing and at least one light source
of each of said red, blue and green light sources thereby directly
to illuminate substantially all points on said housing of
translucent material from at least one of said light sources of
each of the respective red, blue and green colours; and
means for separately energizing the light sources of each colour to
permit illumination of said housing in a multiplicity of selectable
colour permutations.
2. An illuminating device according to claim 1 wherein said means
for separately energizing the light sources of each colour include
means for separately controlling the intensity of the light sources
of each colour to provide an increased number of selectable colours
of illumination.
3. An illuminating device according to claim 1 and further
including at least one white light source and means for controlling
the energization thereof.
4. An illuminating device according to claim 3 wherein each cluster
of light sources further includes a white light source.
5. An illuminating device according to claim 1 and further
including means for remote control of light source
energization.
6. An illuminating device according to claim 1 including three
clusters of light sources disposed at approximately 120.degree.
orientation from each other.
Description
BACKGROUND OF THE INVENTION
The present invention relates to illuminating devices and
particularly to a lamp which is adapted to provide illumination of
any desired colour or intensity.
SUMMARY OF THE INVENTION
According to the invention, there is provided an illuminating
device for producing illumination of any desired colour and
intensity, the illuminating device comprising a housing of
transluscent material, at least one group of three differently
coloured light sources disposed within the housing, the group
including a red light sources, a blue light source and a green
light source and light dimmers for individually and remotely
controlling the intensity of each of the light sources to thereby
select the colour and intensity of illumination of the device.
It will thus be seen that any desired colour or intensity of
illumination can be selected by controlling the light dimmers. For
example, if the colour red is desired, the light dimmers are
controlled so that only the red light source is energised, the
amount of energization also controlling its intensity. The same
applies with respect to obtaining a blue or green colour of
illumination. Other colours are obtained by controlling the
respective intensities of the three light sources and if all the
light sources emit light of equal intensity, white light is
obtained.
It is thus seen that the colour and intensity of a light fixture
can be controlled from a distance, without any mechanically moving
parts and the effect provided by the new lamp is truly
impressive.
The transluscent housing may be of any desired shape, for example
spherical, box-like, ellipsoidal, pyramidcal or any other irregular
shape. In a preferred embodiment of the invention described below,
it is of global shape and the light sources are disposed
symmetrically about a central axis of the globe. The global
transluscent housing may include only one group of light sources,
i.e., one red, one blue and one green or it may include a plurality
of such groups symmtrically disposed about the central axis of the
globe. That is to say in the latter case, each light source in one
group would be symmetrical about the globe axis with respect to the
same coloured light sources of the other groups. Thus, if three
groups of light sources are present, as in another preferred
embodiment, there would be light sources of each colour and these
would be disposed about the globe axis at 120.degree. spacing from
each other. In this manner, the bulb of one light source will not
shade the light impinging on the housing from the others.
In another described embodiment, involving another housing
configuration, there are plurality of groups of light sources, each
group comprising three closely spaced linear light sources,
disposed in a common plane. In the illustrated form of this
embodiment, the plurality of groups of light sources are disposed
in a plurality of different planes.
If desired, the illuminating devices may include a white light
source and a separate dimmer for controlling the satuarion of each
colour of illumination.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is herein described, somewhat diagrammatically and by
way of example only, with reference to the accompanying drawings,
wherein:
FIG. 1 illustrates one form of illuminating device constructed in
accordance with the invention, the housing of the illuminating
device being global in shape and being shown in transverse
section;
FIG. 2 illustrates a variation in the form of FIG. 1
FIG. 3 illustrates another form of illuminating device constructed
in accordance with the invention and
FIG. 4 is a partially broken away view of the form of illuminating
device corresponding to FIG. 2 and illustrating in three
dimensional perspective the placement of the light sources within a
body of revolution according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference first to FIG. 1, there is shown an illuminating
device comprising a transluscent housing 2, enclosing three
differently coloured light sources, namely, a red lamp LR, a blue
lamp LB, and a green lamp LG. All three lamps have glass envelopes
coloured to provide the respective colours. The three lamps are
connected by conductors 4 to a housing 6, containing three light
dimmers, namely DR for controlling the red lamp LR, DB for
controlling the blue lamp LB and DG for controlling the green lamp
LG. Each dimmer includes a knob 8, which adjusts the intensity of
the respective lamp from zero (i.e. de-energised) to maximum
intensity, the dimmer including graduations 10, indicating the
setting of the control knob. The dimming devices are connected to a
power supply through a main switch 12 and a plug 14.
Any suitable form of dimming devices may be used, preferably one of
the electronic integrated circuit dimming devices now available on
the market. The dimming devices may be actuated in a continuous
manner or in a step-wise manner.
The transluscent housing 2, is preferably made of matte plastic,
fabric, paper or frosted glass, and in this embodiment it is of
global shape. In this case, particularly when there are only three
light sources LR, LB and LG within the housing, these light sources
would be disposed as close to the central axis 16, of the globe as
possible.
It will thus be seen that by controlling the dimmers DB, DR and DG,
their respective light sources are controlled so as to provide any
desired colour of illumination and also any desired intensity.
FIGS. 2 and 4 illustrates a variation in the form of illuminating
device FIG. 1. In this variation, there are three groups of
differently coloured light bulbs, namely: three red light bulbs, LR
1, LR 2 and LR 3; three blue light bulbs, LB 1, LB 2, LB 3; and
three green light bulbs, LG 1 LG 2, LG 3. Housing 20, is also of
global shape and the three groups of differently coloured light
bulbs are symmetrically disposed about the central axis 22, of the
globe. Thus, the three red light bulbs are arrayed around the
central axis 22, at 120.degree. spacing and the same applies with
respect to the three blue light bulbs and the three green light
bulbs. In this case, the red dimming device DR in FIG. 1 (not shown
in FIG. 2) controls the intensity of the light emitted by all three
red light sources LR 1, LR 2 and LR 3; and similarly the blue
dimmer DB, controls the intensity of the three blue light bulbs and
the green dimmer GD, controls the intensity of the three green
light bulbs. Thus, the colour and intensity of the light issuing
from the illuminating device may be remotely controlled by
adjusting the control knobs 8, of the three dimming devices.
It has been found that the arrangement of FIG. 2 produces a high
degree of uniformity of the light issuing from the transluscent
global housing 20, so that the globe seems to glow evenly
throughout its whole surface with the colour and intensity of light
as controlled by the dimming devices.
As indicated earlier, the matte transluscent housing may take any
shape. FIG. 3 illustrates another embodiment wherein the housing
takes thw shape simulating a candelabrum having three arms 30, 32,
34 and a supporting base, 36. In this case, each arm includes a
plurality of groups of light sources, with each group comprising
three closely spaced linear light sources disposed in a common
plane. Thus, arm 30 includes the upper group of light sources LR
11, LB 11, LG 11; a second group of light sources, LR 12, LB 12, LG
12 thereunder; and any number of further groups of light sources
below them. The light souces are linear light sources and are all
arranged in a closely spaced relationship in a common plane.
Similarly, arm 32 includes a plurality of group of light sources,
each group comprising three closely spaced linear light sources of
the different colours (e.g., LR, LB 21, LG 21) all disposed in a
common plane and similarly arm 34 includes a plurality of group of
linear light sources (LR 31, LB 31, LG 31) all disposed in a common
plane). It will also be seen that the plane of the light sources in
arm 30 is different from that of those in arms 32 and 34.
In addition, the base 36 of the candelabrum shaped light fixture
also includes a plurality of groups of linear light sources (e.g.
LR 41, LB 41, LG 41) and likewise the portions 38, 40 connecting
the arms to the base also includes a plurality of groups of linear
light sources (LR 51, LR 61) respectively.
The light sources in each group are disposed very close to each
other so that when they are energised, their light will be mixed by
the matte transluscent housing of the fixture to produce an output
light which is of a uniform colour and intensity according to the
control of the respective dimmers.
In the case of the embodiment of FIG. 3, as in the previous
embodiment, there would be one dimmer for each colour of all the
groups.
In some applications, it would be desirable to include a white
light source controlling the saturation of each colour produced by
the illuminating device.
Many other variations, modifications and applications of the
illustrated embodiments will be apparent.
* * * * *