FORM 2
THE PATENT ACT, 1970
(39 OF 1970)
AND
THE PATENT RULES, 2003
PROVISIONAL/COMPLETE SPECIFICATION
(See section 10; rule 13)
1. TITLE OF THE INVENTION : FOG ID
2. APPLICANT:
(a). Name: GKB HI-TECH LENSES PVT LTD (b). Nationality: INDIAN
(c). Address: 50A, Karaswada, Tivim Industrial Estate, Mapusa. Goa, pin-403526
3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed:

A PROCESS FOR BLOW MARKING ON LENSES
The field of Invention:
This invention is related to Spectical lens and method for making visible marking through blow marking. More particularly, this invention is related to Spectical lens with visible marking created by laser etching system, or energy generated for electromagnetic system and methods for making the marks.
Background of Invention:
A variety of methods are know for placing marking of spectical lens. These techniques generally involve either applying a mark directly on the specticale lens, placing an inversion mark on the mold insert or molded casting cup so that the mark gets reproduced onto the lens-during the cast-moulding process. Typically, the marking indica is used to identify the source of the lens, to identify a specific orientation in an asymmetric lens, or to identify the front or back surface of a lens.
One such method for making an inversion mark involves the use of an electric discharge to burn the mark into a metal mold insert. The electrode are shaped to correspond to the mark and placed in proximity to the mold insert where an electric discharge melts the mark in the surface of the insert. The size and shape of the tetters in the mark are limited by the minimum 1CM radius possible with wire-cut electrodes. The electric discharge can be a fire hazard and the equipment must have built in extinguisher.
Another method for making marks is to use a diamond point engraver to cut the mark the surface of the mold insert. Some difificulties with this technique is that the depth into of penetration is not uniform because of the difficulty aligning the ARC of the cutter with the curved surface of the insert. Also , the profile of the mark is limited by the shape of the cutter.
Other techniques for placing indica on Spectical lens, either directly or indirectly through marking the mold insert include printing a visible mark on the lens, dyeing a visible mark on the lens, placing sphero- cylindrical optical marking elements on the lens, chemically etching the mark on the mold insert, and laser-writing a mark in the mold insert. Still, there is room for improvement for new marking techniques in terms of visibility, economics, wearer comfort, ease of manaufacture, and manufacturing safety.

Description of Drawing:
Lenses taoded in calotte fig 1. Blow marking of lenses fig. 2 Blow marked Glass fig. 3 Cleaning of lenses fig. 4
Object of invention:
It is an object of the invention to provide a method for marking on the lenses.
It is also an object of the invention is to provide a method for marking on the lenses particularly on the Spectical lens.
It is also an object of the invention to blow marking on the lenses.
It is also an object of the invention is to provide variety of sources for blow marking of lenses.
It is also an object of the invention is to provide a method for blow marking that a thin deposition.
It is also an object of the invention is to provide a method for blow marking which results in a deposition of thick diamond like carbon.
It is also object of the invention iis to provide a method for blow marking which also results surface roughening of polymers for improved addition or biocompatibility.
Summary of the Invention:
In one of the aspect of the invention is to provide a method for marking on the lenses particularly with the blow marking, variety of the ion sources are provided for making mark on the lenses, ion sources like rays, electromagnetic rays, LASER. The lenses such as Spectical lense are used for marking.
An ion source is an electro-magnetic device that is used to create charged particles.

Detailed description of the invention:
In one of the aspect of the invention as a method for making blow marking on the surface of the lenses is provided. The ion sources for making mark is including plasma, electromagnetic radiation, Laser, the tons are generated as the sources from electric current which is bombared on the surface of the lenses to be marked.
Lenses are provided for marking includes spectical lenses.
The process is involving a gas flows through the ion source between the anode and the
cathode, a positive voltage is paalied to the anode. These votages combined with
the high magnetic field between the tibs of the internal & external cathode glow plasma
to start ions from the plasma are repelled by the anode electric field.
In a preferred mode of the invention it is provided with the following steps are involved with the blow marking of the
1. lenses is mounted on the Calotte on the +ve i.e: concave side,
2. load in Calotte on the +ve i.e: concave side.
3. load the Calotte in machine and select the process, lenses get ionised.
4. Lenses are removed and blow mark process is done.
The process of bow marking has following advantages it results in thin deposition, deposition of thick diamond like carbon, surface roughening of polymers for improved addition or biocompatibility.
The glass which is blow marked are optionally get dried and clened by alchol washing.
Examples
1. The following is the process for the Blow marking for lenses.
2. Lenses are received with AR coating from Stores.
3. Load in calotte on +ve i.e.: concave side.

4. Load the Calotte in machine and select the process, lenses get ionised with plasma ARC, or LASER rays.
5. Lenses are removed and blow mark process os done,
6. After blow marking lenses are again loaded In calotte for TOP coating process. and then lenses are unloaded in trays and the blow mark is cleaned with IPA and soft cloth.
7. Then lenses are despatch to Mass QC dept.
2. The following is the process for the Blow marking for Rx lenses.
1. Lenses are received from surfacing dept.
2. Lenses are coating first Hard coated and seperated wise.
3. Then load the lenses in calotte and process for ARC concave side +ve and bombared with the plasma ARC, or Laser rays, electromagnetic radiation
4. Lenses are removed and inverted and processed for ARC convex side -ve.
5. Then remove the lenses and blow mark on concave side.
6. Again lenses are loaded for top coat process, after completing the process lenses are unloaded in black trays along with the order slip.
7. Blow marks are cleaned and ARC IPQC is done and lenses are despatched to final QC.

Claims:
1. A process for blow marking on lenses comprising,
(a) glass is mounted on the calotte on +ve i.e.: concave side.
(b) Load in Calotte on +ve side,
(c) Load the calotte in Machine and select the process, lenses ger ionised.
(d) Lenses are removed and blow mark process is done
(e) cleaned with alcohol
(f) Wiped with soft cloth to avoid eraser on glass.

2. A process for blow marking on lenses according to claim 1 wherein lenses are spectical lenses, Rx lenses.
3. A process for blow marking on lenses according to claim 1 wherein ionisation process is plasma, arc, laser, electromagnetic radiation either single sources or in combination
4. A process for blow marking on lenses according to claim 1.
5. A process for blow marking on lenses according to claim 1, 4 wherein alcohol is isopropanol.