DE2451926A1 - Stigmatisches brechungssystem - Google Patents

Stigmatisches brechungssystem

Info

Publication number
DE2451926A1
DE2451926A1 DE19742451926 DE2451926A DE2451926A1 DE 2451926 A1 DE2451926 A1 DE 2451926A1 DE 19742451926 DE19742451926 DE 19742451926 DE 2451926 A DE2451926 A DE 2451926A DE 2451926 A1 DE2451926 A1 DE 2451926A1
Authority
DE
Germany
Prior art keywords
zones
sub
refraction
refraction system
chain
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.)
Withdrawn
Application number
DE19742451926
Other languages
German (de)
English (en)
Inventor
Pierre Hartemann
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of DE2451926A1 publication Critical patent/DE2451926A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/36—Devices for manipulating acoustic surface waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Optical Integrated Circuits (AREA)
DE19742451926 1973-11-02 1974-10-31 Stigmatisches brechungssystem Withdrawn DE2451926A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7339082A FR2250230B1 (enrdf_load_stackoverflow) 1973-11-02 1973-11-02

Publications (1)

Publication Number Publication Date
DE2451926A1 true DE2451926A1 (de) 1975-05-28

Family

ID=9127243

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742451926 Withdrawn DE2451926A1 (de) 1973-11-02 1974-10-31 Stigmatisches brechungssystem

Country Status (3)

Country Link
DE (1) DE2451926A1 (enrdf_load_stackoverflow)
FR (1) FR2250230B1 (enrdf_load_stackoverflow)
GB (1) GB1492947A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159511A (en) * 1976-11-30 1979-06-26 Societe Parisienne des Anciens Etablissements Bariber, Benard & Turenne Shadowless lighting appliance for surgical operating theatres and the like

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500177A1 (fr) * 1981-02-13 1982-08-20 Thomson Csf Dispositif dioptrique a ondes magnetostatiques
DE3731309A1 (de) * 1987-09-17 1989-03-30 Siemens Ag Oberflaechenwellenanordnung mit konversionsstruktur zur vermeidung unerwuenschter reflektierter wellen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159511A (en) * 1976-11-30 1979-06-26 Societe Parisienne des Anciens Etablissements Bariber, Benard & Turenne Shadowless lighting appliance for surgical operating theatres and the like

Also Published As

Publication number Publication date
FR2250230A1 (enrdf_load_stackoverflow) 1975-05-30
GB1492947A (en) 1977-11-23
FR2250230B1 (enrdf_load_stackoverflow) 1976-07-23

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee