FR2198203A1 - - Google Patents

Info

Publication number
FR2198203A1
FR2198203A1 FR7331189A FR7331189A FR2198203A1 FR 2198203 A1 FR2198203 A1 FR 2198203A1 FR 7331189 A FR7331189 A FR 7331189A FR 7331189 A FR7331189 A FR 7331189A FR 2198203 A1 FR2198203 A1 FR 2198203A1
Authority
FR
France
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.)
Granted
Application number
FR7331189A
Other versions
FR2198203B1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority claimed from NL7211996A external-priority patent/NL7211996A/xx
Priority claimed from NL7212044A external-priority patent/NL7212044A/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2198203A1 publication Critical patent/FR2198203A1/fr
Application granted granted Critical
Publication of FR2198203B1 publication Critical patent/FR2198203B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
FR7331189A 1972-09-02 1973-08-29 Expired FR2198203B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7211996A NL7211996A (fr) 1972-09-02 1972-09-02
NL7212044A NL7212044A (fr) 1972-09-05 1972-09-05

Publications (2)

Publication Number Publication Date
FR2198203A1 true FR2198203A1 (fr) 1974-03-29
FR2198203B1 FR2198203B1 (fr) 1979-08-03

Family

ID=26644797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7331189A Expired FR2198203B1 (fr) 1972-09-02 1973-08-29

Country Status (15)

Country Link
JP (1) JPS5330453B2 (fr)
AR (1) AR198680A1 (fr)
AT (1) AT328002B (fr)
BE (1) BE804328A (fr)
CA (1) CA1005907A (fr)
CH (1) CH569327A5 (fr)
DK (1) DK135558B (fr)
ES (1) ES418390A1 (fr)
FR (1) FR2198203B1 (fr)
GB (1) GB1441175A (fr)
IT (1) IT990420B (fr)
NO (1) NO141671C (fr)
PL (1) PL86219B1 (fr)
SE (1) SE394154B (fr)
YU (1) YU39711B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280150A1 (fr) * 1974-07-26 1976-02-20 Thomson Brandt Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture
FR2332577A1 (fr) * 1975-11-20 1977-06-17 Sony Corp Appareil de lecture d'informations par voie optique
FR2399088A1 (fr) * 1973-02-20 1979-02-23 Mca Disco Vision Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations
FR2470391A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Dispositif optique stigmatique d'emission-reception de rayonnements coherents et tete optique d'enregistrement-lecture comprenant un tel dispositif

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916331B2 (ja) * 1975-11-27 1984-04-14 パイオニア株式会社 コウガクシキシンゴウヨミトリソウチ
US4097895A (en) * 1976-03-19 1978-06-27 Rca Corporation Multilayer optical record
NL8004892A (nl) * 1980-08-29 1982-04-01 Philips Nv Inrichting voor het verwerken van optische informatie en werkwijze voor het vervaardigen van een coma-correctieplaat zoals toegepast in een dergelijke inrichting.
JPS5997713U (ja) * 1982-12-20 1984-07-02 市川毛織株式会社 スキマ−
JPS6234127A (ja) * 1985-08-08 1987-02-14 Konishiroku Photo Ind Co Ltd 光変調方式

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443710B2 (fr) * 1972-03-15 1979-12-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399088A1 (fr) * 1973-02-20 1979-02-23 Mca Disco Vision Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations
FR2280150A1 (fr) * 1974-07-26 1976-02-20 Thomson Brandt Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture
FR2332577A1 (fr) * 1975-11-20 1977-06-17 Sony Corp Appareil de lecture d'informations par voie optique
FR2470391A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Dispositif optique stigmatique d'emission-reception de rayonnements coherents et tete optique d'enregistrement-lecture comprenant un tel dispositif
EP0029755A1 (fr) * 1979-11-21 1981-06-03 Thomson-Csf Dispositif optique stigmatique d'émission-réception de rayonnements cohérents et tête optique d'enregistrement-lecture comprenant un tel dispositif
US4334300A (en) * 1979-11-21 1982-06-08 Thomson-Csf Stigmatic optical device and an optical recording head equipped with said device

Also Published As

Publication number Publication date
PL86219B1 (fr) 1976-05-31
NO141671C (no) 1980-04-16
DK135558B (da) 1977-05-16
AU5978073A (en) 1975-03-06
BE804328A (fr) 1974-02-28
JPS4965726A (fr) 1974-06-26
AR198680A1 (es) 1974-07-15
IT990420B (it) 1975-06-20
CH569327A5 (fr) 1975-11-14
DE2341824B2 (de) 1976-10-14
ATA756073A (de) 1975-05-15
DK135558C (fr) 1977-10-24
SE394154B (sv) 1977-06-06
NO141671B (no) 1980-01-07
AT328002B (de) 1976-02-25
JPS5330453B2 (fr) 1978-08-26
YU39711B (en) 1985-04-30
YU231773A (en) 1982-06-30
CA1005907A (en) 1977-02-22
FR2198203B1 (fr) 1979-08-03
GB1441175A (en) 1976-06-30
ES418390A1 (es) 1976-03-16
DE2341824A1 (de) 1974-03-14

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