GB2218219B - A mask assembly for defining an image - Google Patents

A mask assembly for defining an image

Info

Publication number
GB2218219B
GB2218219B GB8907808A GB8907808A GB2218219B GB 2218219 B GB2218219 B GB 2218219B GB 8907808 A GB8907808 A GB 8907808A GB 8907808 A GB8907808 A GB 8907808A GB 2218219 B GB2218219 B GB 2218219B
Authority
GB
United Kingdom
Prior art keywords
image
defining
reflective
mask
mask assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB8907808A
Other versions
GB8907808D0 (en
GB2218219A (en
Inventor
Stewart Wynn Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems PLC
Original Assignee
British Aerospace PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Aerospace PLC filed Critical British Aerospace PLC
Publication of GB8907808D0 publication Critical patent/GB8907808D0/en
Publication of GB2218219A publication Critical patent/GB2218219A/en
Application granted granted Critical
Publication of GB2218219B publication Critical patent/GB2218219B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/355—Texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/359—Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line

Abstract

A reflective mask for defining an image to be marked on an article using a laser beam (34) wherein the mask assembly (20, 40, 50) comprises reflective portions (32) defining the image. The mask (20) may comprise a plurality of individually selectable reflective elements (32) for defining an image, e.g. wheel members (26-29) each carrying several digits around its periphery, or wheel members each having a plurality of reflective elements around its periphery (Fig 4. not shown) or individually pivotable members arranged in arrays and each carrying a reflective element (Figs 5-8. not shown). <IMAGE>
GB8907808A 1988-05-04 1989-04-06 A mask assembly for defining an image Expired - Lifetime GB2218219B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888810483A GB8810483D0 (en) 1988-05-04 1988-05-04 Imaging system

Publications (3)

Publication Number Publication Date
GB8907808D0 GB8907808D0 (en) 1989-05-24
GB2218219A GB2218219A (en) 1989-11-08
GB2218219B true GB2218219B (en) 1992-09-16

Family

ID=10636304

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888810483A Pending GB8810483D0 (en) 1988-05-04 1988-05-04 Imaging system
GB8907808A Expired - Lifetime GB2218219B (en) 1988-05-04 1989-04-06 A mask assembly for defining an image

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888810483A Pending GB8810483D0 (en) 1988-05-04 1988-05-04 Imaging system

Country Status (1)

Country Link
GB (2) GB8810483D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310504A (en) * 1996-02-23 1997-08-27 Spectrum Tech Ltd Laser marking apparatus and methods
GB9917892D0 (en) 1999-07-31 1999-09-29 Glaxo Group Ltd Marking method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856651A (en) * 1958-03-18 1960-12-21 Carl Allers Ets A new or improved method of photographing an original for reproduction by printing
GB1101274A (en) * 1965-08-27 1968-01-31 Rank Xerox Ltd Improvements in or relating to document heading devices
GB1210949A (en) * 1967-07-03 1970-11-04 Ibm Processes for making photomasks
GB1451399A (en) * 1973-10-30 1976-09-29 Oronzio De Nora Impianti Electrolysis cells
GB1472622A (en) * 1973-08-16 1977-05-04 Xerox Corp Holographic coding of microfilm
US4447148A (en) * 1982-09-15 1984-05-08 Pitney Bowes Inc. Edge printing device
GB2151558A (en) * 1983-12-22 1985-07-24 Xerox Corp Image annotator for use with an electrophotographic apparatus
GB2176628A (en) * 1985-06-06 1986-12-31 Gillian Margaret Davis Apparatus for the production of high resolution images

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856651A (en) * 1958-03-18 1960-12-21 Carl Allers Ets A new or improved method of photographing an original for reproduction by printing
GB1101274A (en) * 1965-08-27 1968-01-31 Rank Xerox Ltd Improvements in or relating to document heading devices
GB1210949A (en) * 1967-07-03 1970-11-04 Ibm Processes for making photomasks
GB1472622A (en) * 1973-08-16 1977-05-04 Xerox Corp Holographic coding of microfilm
GB1451399A (en) * 1973-10-30 1976-09-29 Oronzio De Nora Impianti Electrolysis cells
US4447148A (en) * 1982-09-15 1984-05-08 Pitney Bowes Inc. Edge printing device
GB2151558A (en) * 1983-12-22 1985-07-24 Xerox Corp Image annotator for use with an electrophotographic apparatus
GB2176628A (en) * 1985-06-06 1986-12-31 Gillian Margaret Davis Apparatus for the production of high resolution images

Also Published As

Publication number Publication date
GB8907808D0 (en) 1989-05-24
GB2218219A (en) 1989-11-08
GB8810483D0 (en) 1988-06-08

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990406