GB1464579A - Laser-beam melting devices - Google Patents

Laser-beam melting devices

Info

Publication number
GB1464579A
GB1464579A GB2198174A GB2198174A GB1464579A GB 1464579 A GB1464579 A GB 1464579A GB 2198174 A GB2198174 A GB 2198174A GB 2198174 A GB2198174 A GB 2198174A GB 1464579 A GB1464579 A GB 1464579A
Authority
GB
United Kingdom
Prior art keywords
laser
workpiece
directs
optical system
prism
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
Application number
GB2198174A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1464579A publication Critical patent/GB1464579A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16—Heating of the molten zone
    • C30B13/22—Heating of the molten zone by irradiation or electric discharge
    • C30B13/24—Heating of the molten zone by irradiation or electric discharge using electromagnetic waves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laser Beam Processing (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Furnace Details (AREA)

Abstract

1464579 Drawing glass rods SIEMENS AG 17 May 1974 [16 July 1973] 21981/74 Heading C1M [Also in Division B1] A laser device for heat softening cylindrical workpiece for subsequent drawing comprises a laser and an optical system for directing laser radiation on to the workpiece. The optical system includes a condenser lens 2 which directs the laser beam 1 on to a prism 3, the prism rotating about the optic axis 4 of the lens thereby causing the beam to move in a conical sweep, and a conical mirror 5 which intercepts the rotating beam and directs it on to the workpiece 8. The device is preferably employed in the manufacture of optical fibres by drawing glass rods.
GB2198174A 1973-07-16 1974-05-17 Laser-beam melting devices Expired GB1464579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732336169 DE2336169A1 (en) 1973-07-16 1973-07-16 LASER BEAM MELTING DEVICE

Publications (1)

Publication Number Publication Date
GB1464579A true GB1464579A (en) 1977-02-16

Family

ID=5887101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2198174A Expired GB1464579A (en) 1973-07-16 1974-05-17 Laser-beam melting devices

Country Status (3)

Country Link
JP (1) JPS5043949A (en)
DE (1) DE2336169A1 (en)
GB (1) GB1464579A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954694A (en) * 1982-09-24 1984-03-29 Fujitsu Ltd Method for growth of single crystal
JPH0472842U (en) * 1990-11-01 1992-06-26

Also Published As

Publication number Publication date
JPS5043949A (en) 1975-04-21
DE2336169A1 (en) 1975-02-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee