COMPLETE SPECIFICATIONS
FIELD OF INVENTION
The present invention relates to chemical coating on H4 Halogen lamp by deposition of Hydridospherosiloxanes to generate blue colour bands at high temperatures to fuse in the hard glass body tube at predetermined height and width. This SiO2 coating gives out a brilliant blue colour light output in visible range of light parabola.
BACK GROUND OF INVENTION
The conventional Halogen lamp gives a light output of lower colour rendering index in which it is sometimes not possible to seek black objects or dark colour objects properly on the road. However this is further emphasized in rain, dawn or dusk; when the light levels in nature are suddenly changing from dull to bright or vice versa. As a result it was difficult to achieve a high colour-rendering index prior to the blue band coating in normally used Halogen lamps.
SUMMARY OF INVENTION
A bonding of resign, hardener and a second solvent phase is prepared
to dilute the legend which was previously mixed and stored in a
temperature of 7°+/-2°C.
This solvent is coated by a special dipping mechanism in a clean room
to avoid dust and Nan particles from being coated on the lamp along
with blue silicone paint.
This paint is stored and mixed together in proper percentage along
with the box solvent. The box solvent has to have a minimum shelf life
of one month.
Pure Hydridospherosiloxane is then heated in a chamber at a constant temperature in Nitrogen, maintained atmosphere by using of purging method by a venturi and oxygen removal from the ambient heating chamber. A plurality of substrates is suspended to remove any impurities, which may be present at the time of drying process. The coating is then baked at high temperatures can vary from 20 minutes to 30 minutes per charge of baking material. The then coated SiO2 film has a refractive index of 1.44 at a wavelength of 32.8 nm.
The then coated lamps are sent to masking coating removal in NaOH solvent which is heated and maintained at 80° C.
The masking is then removed and the coated lamp is tested for CRi for visible spectrum.

Figure1
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Figure2
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Figure 3
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DETAILED DESCRIPTION OF INVENTION
Please refer to Figures 1, 2, and 3 for parameters, which correspond, to the above said invention in complete true form. The Figure 1 has a total of nine, Figure 2 has a total often and Figure 3 has a total of thirteen datum to be functional and effective. Each being inter-related with each other is an effective means of getting the right type of colour rendering index.
The Pin to base (1) reference dimension secures the setting of base line is secured and hence right blend of light is assured in final product which closely is in tune with the functional as well as non functional dimensions; unless otherwise, locally, marked and verified.
The next very important parameter is the distance between the coller (2) and the tip, which establishes the fitment in any H4 standard beam. This dimensional parameter is in line, with the base dimension of lamp specifications.
The position of the blue band (4) with reference to the filaments (3 & 5) and its width shall have effect the CRi of lamp and visible difference of effects can be seen on the road. Height of the coating (7) is set to validate the coating angle which has not to be more than 40° maximum.

CLAIMS

1. The Tungsten Halogen Lamps for automotive
vehicles with base parts of P43t, P45t or PX43t (2),
which are plasma welded together to form a complete
lamp. Molybdenum wires (8) carry the electricity to
both the filaments and are responsible for electron
flow, and a layer of visible blue band (4) deposited on
its glass outer shell (6), covering a specified part of
main filament (3) accordingly.
2. The blue visible band (4) as claimed in claim 1,
covers the different portions of main filament, mirror
and other parts as shown in figures 1, 2, and 3, so as
to have a blue light effect.
3. The blue visible band (4) as claimed in claim 1 and 2,
is preferably made by the deposition of
Hydridospherosiloxanes and can withstand a skin
temperature of the halogen lamp.
4. A Tungsten Halogen Lamp as claimed in Claim 1 is
fitted in the base parts, which are held firmly and the
electrical contact made by the 3 terminals which are
electrically connected to the filaments (3) & (5).