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1. EP3418779 - FRESNEL LENS AND MANUFACTURING METHOD FOR FRESNEL LENS

Office
European Patent Office
Application Number 17750203
Application Date 06.02.2017
Publication Number 3418779
Publication Date 26.12.2018
Publication Kind B1
IPC
G02B 3/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
02with non-spherical faces
08with discontinuous faces, e.g. Fresnel lens
G02B 3/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
CPC
G02B 3/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
02with non-spherical faces
08with discontinuous faces, e.g. Fresnel lens
G02B 3/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
C23C 14/04
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
04Coating on selected surface areas, e.g. using masks
C23C 14/5873
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
58After-treatment
5873Removal of material
F21V 5/045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
5Refractors for light sources
04of lens shape
045the lens having discontinuous faces, e.g. Fresnel lenses
Applicants SONY INTERACTIVE ENTERTAINMENT INC
Inventors TADA SYOTARO
ISHIOKA MANABU
KUSUNOKI TOSHIHIRO
Designated States
Priority Data 2016023151 09.02.2016 JP
Title
(DE) FRESNEL-LINSE UND HERSTELLUNGSVERFAHREN FÜR FRESNEL-LINSE
(EN) FRESNEL LENS AND MANUFACTURING METHOD FOR FRESNEL LENS
(FR) LENTILLE DE FRESNEL ET PROCÉDÉ DE FABRICATION D'UNE LENTILLE DE FRESNEL
Abstract
(EN) There are provided a Fresnel lens and a method of manufacturing the Fresnel lens which can suppress a flare which is generated in an image visually recognized through the Fresnel lens so as to extend toward a center of a lens. A lens surface (24) and a non-lens surface (26) are formed in each of lens portions (22). The non-lens surface (26) includes a rise surface (26a) and a coupling surface (26b). The rise surface (26a) is a surface along an optical axis of a Fresnel lens (1). The coupling surface (26b) is a surface which is formed on a top portion (22a) of each of the lens portions (22) and couples the lens surface (24) of the lens portion (22) and the rise surface (26a) of the lens portion (22) to each other, and which has a width extending in a radial direction of the Fresnel lens (1). A light absorbing portion (12) is provided in a position along the optical axis of the Fresnel lens (1) which passes through the coupling surface (26b).
(FR) L'invention concerne: une lentille de Fresnel capable d'inhiber la génération d'une lumière parasite qui s'étend vers le centre de la lentille dans une image vue à travers des lentilles de Fresnel; et un procédé de fabrication pour la lentille de Fresnel. Dans la présente invention, une surface (24) de lentille et une surface (26) hors lentille sont formées dans chacune des parties (22) de lentille. La surface (26) hors lentille comprend une surface (26a) d'élévation et une surface (26b) de raccordement. La surface (26a) d'élévation s'étend suivant l'axe optique d'une lentille (1) de Fresnel. La surface (26b) de raccordement est formée sur un sommet (22a) de chacune des parties (22) de lentille, relie la surface (24) de lentille de la partie (22) de lentille à la surface (26a) d'élévation de la partie (22) de lentille, et présente une largeur s'étendant dans la direction radiale de la lentille (1) de Fresnel. Une partie (12) d'absorption de lumière est placée dans une position, le long de l'axe optique de la lentille (1) de Fresnel, dépassant la surface (26b) de raccordement.
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