GB1012452A - A method for the manufacture of optical shields having a grooved profile for removing the lines in television pictures - Google Patents
A method for the manufacture of optical shields having a grooved profile for removing the lines in television picturesInfo
- Publication number
- GB1012452A GB1012452A GB2050462A GB2050462A GB1012452A GB 1012452 A GB1012452 A GB 1012452A GB 2050462 A GB2050462 A GB 2050462A GB 2050462 A GB2050462 A GB 2050462A GB 1012452 A GB1012452 A GB 1012452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manufacture
- lines
- grooved
- cylinder
- television pictures
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/72—Modifying the appearance of television pictures by optical filters or diffusing screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/002—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00932—Combined cutting and grinding thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B3/04—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings wherein non-plane surfaces are worked
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/24—Supports for luminescent material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/34—Luminescent screens provided with permanent marks or references
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B2700/00—Machines, apparatus, tools or accessories for artistic work
- B44B2700/02—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B2700/025—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings for engraving a surface of revolution
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Metal Rolling (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
<PICT:1012452/C6-C7/1> <PICT:1012452/C6-C7/2> A method of making a mould for the manufacture of optical shields having a grooved profile for removing the lines in television pictures comprises cutting ahelical groove into a metallic cylinder and electroplating the grooved cylinder so formed to remove the surface roughness. Grooves as shown in Fig. 3 are coated in an electroplating bath with a thin layer of a metal such as nickel to a thickness of 20 microns. An average current density of 2-3 amps./square decimetre are used. For the grooves shown in Fig. 4 a current density of 4-6 amps./square decimetre is used to apply 20 layers to produce a total thickness of 200 microns and to produce the subsequent deforming defect. The grooved surface of the cylinder may be detached and opened flat after the cutting operation has been performed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES74490A DE1203310B (en) | 1961-06-24 | 1961-06-24 | Process for profiling a roller used for the production of optical diaphragms with a grooved profile |
DES86516A DE1215746B (en) | 1961-06-24 | 1963-08-02 | Profiling of roll-shaped matrices for the production of grooved optical screens that remove the line structure of television images |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1012452A true GB1012452A (en) | 1965-12-08 |
Family
ID=25996493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2050462A Expired GB1012452A (en) | 1961-06-24 | 1962-05-28 | A method for the manufacture of optical shields having a grooved profile for removing the lines in television pictures |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH416392A (en) |
DE (1) | DE1215746B (en) |
FR (1) | FR1324077A (en) |
GB (1) | GB1012452A (en) |
NL (1) | NL280085A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2706804A1 (en) * | 1993-06-25 | 1994-12-30 | Delacour Frederic | Method of treating the surface of a thermoformable material and device for this treatment |
WO2004024421A1 (en) * | 2002-09-10 | 2004-03-25 | 3M Innovative Properties Company | Multi-diamond cutting tool assembly for creating microreplication tools |
-
0
- NL NL280085D patent/NL280085A/xx unknown
-
1962
- 1962-05-28 GB GB2050462A patent/GB1012452A/en not_active Expired
- 1962-05-29 CH CH652862A patent/CH416392A/en unknown
- 1962-05-30 FR FR899230A patent/FR1324077A/en not_active Expired
-
1963
- 1963-08-02 DE DES86516A patent/DE1215746B/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2706804A1 (en) * | 1993-06-25 | 1994-12-30 | Delacour Frederic | Method of treating the surface of a thermoformable material and device for this treatment |
WO2004024421A1 (en) * | 2002-09-10 | 2004-03-25 | 3M Innovative Properties Company | Multi-diamond cutting tool assembly for creating microreplication tools |
CN100349725C (en) * | 2002-09-10 | 2007-11-21 | 3M创新有限公司 | Multi-diamond cutting tool assembly for creating microreplication tools |
Also Published As
Publication number | Publication date |
---|---|
NL280085A (en) | |
FR1324077A (en) | 1963-04-12 |
CH416392A (en) | 1966-06-30 |
DE1215746B (en) | 1966-05-05 |
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