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1. (WO1991007703) APPARATUS FOR MAKING HOLOGRAMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007703 International Application No.: PCT/SE1990/000752
Publication Date: 30.05.1991 International Filing Date: 21.11.1990
Chapter 2 Demand Filed: 04.06.1991
IPC:
A61C 7/00 (2006.01) ,G03H 1/04 (2006.01) ,G03H 1/22 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7
Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
H
HOLOGRAPHIC PROCESSES OR APPARATUS
1
Holographic processes or apparatus using light, infra-red, or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
04
Processes or apparatus for producing holograms
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
H
HOLOGRAPHIC PROCESSES OR APPARATUS
1
Holographic processes or apparatus using light, infra-red, or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
22
Processes or apparatus for obtaining an optical image from holograms
Applicants:
DENTATUS INTERNATIONAL AB [SE/SE]; Jakobsdalsvägen 14-16 S-126 53 Hägersten, SE
Inventors:
EDWARDSON, Svante, R.; SE
ERIKSSON, Rolf; SE
Agent:
KIERKEGAARD, Lars-Olov ; H. Albihns Patentbyrå AB Box 3137 S-103 62 Stockholm, SE
Priority Data:
439,46721.11.1989US
Title (EN) APPARATUS FOR MAKING HOLOGRAMS
(FR) APPAREIL DE PRODUCTION D'HOLOGRAMMES
Abstract:
(EN) An apparatus for making holograms of an object is described. The apparatus has a laser source emitting a collimated or slightly divergent laser beam, and a holder for a holographic plate to hold the holographic plate between said object and said laser source in a position near said object. A positive lens means having its focus is placed between said lens means and said holographic plate such that a divergent laser beam is impinging on said holographic plate and cover an illuminating area on said plate extending well beyond the area of said object in a plane parallel to said holographic plate. A closed housing is placed around said laser source and said lens means, which housing has a controllable shutter to be opened only at control provided in an end wall in a position cutting the beam path of said outgoing laser beam.
(FR) Un appareil de production d'hologrammes d'un objet est décrit. L'appareil comporte une source laser émettant un faisceau collimaté ou légèrement divergent ainsi qu'un support de plaque holographique destiné à maintenir la plaque holographique entre ledit objet et ladite source laser dans une position proche dudit objet. Un moyen de lentille positive ayant son foyer, est placé entre ledit moyen de lentille et ladite plaque holographique, de sorte qu'un faisceau laser divergent est incident sur ladite plaque holographique, et couvre une surface d'illumination sur ladite plaque, s'étendant bien au-delà de la surface dudit objet, dans un plan parallèle à ladite plaque holographique. Un logement fermé est placé autour de ladite source laser et dudit moyen de lentille, ledit logement comportant un obturateur pouvant être commandé pour être ouvert sur commande ménagé dans une paroi terminale dans une position coupant le chemin dudit faisceau laser sortant.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)