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1. WO2019013211 - FRESNEL LENS AND PRODUCTION METHOD FOR SAME

Publication Number WO/2019/013211
Publication Date 17.01.2019
International Application No. PCT/JP2018/026063
International Filing Date 10.07.2018
IPC
G02B 3/08 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
02with non-spherical faces
08with discontinuous faces, e.g. Fresnel lens
B29C 33/42 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
42characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 59/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
59Surface shaping, e.g. embossing; Apparatus therefor
02by mechanical means, e.g. pressing
CPC
B29C 33/405
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
38characterised by the material or the manufacturing process
40Plastics, e.g. foam or rubber
405Elastomers, e.g. rubber
B29C 33/42
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
42characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 59/02
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
59Surface shaping ; of articles; , e.g. embossing; Apparatus therefor
02by mechanical means, e.g. pressing
B29D 11/00269
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
11Producing optical elements, e.g. lenses or prisms
00009Production of simple or compound lenses
00269Fresnel lenses
B29D 11/00442
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
11Producing optical elements, e.g. lenses or prisms
00009Production of simple or compound lenses
00432Auxiliary operations, e.g. machines for filling the moulds
00442Curing the lens material
B29K 2063/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2063Use of ; EP, i.e.; epoxy resins ; or derivatives thereof; , as moulding material
Applicants
  • 株式会社ダイセル DAICEL CORPORATION [JP]/[JP]
Inventors
  • 藤川武 Fujikawa, Takeshi
  • 福井 貞之 FUKUI, Sadayuki
Agents
  • 特許業務法人後藤特許事務所 GOTO & CO.
Priority Data
2017-13525411.07.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FRESNEL LENS AND PRODUCTION METHOD FOR SAME
(FR) LENTILLE DE FRESNEL ET SON PROCÉDÉ DE PRODUCTION
(JA) フレネルレンズ、及びその製造方法
Abstract
(EN) Provided are: a Fresnel lens that has mountain-shaped prisms that have a narrow pitch and that slope sharply from protruding parts to recessed parts thereof; and a production method for the Fresnel lens. This Fresnel lens is characterized by being a molded and cured product of a curable composition that has a contact angle of no more than 50° with a mold. The Fresnel lens is characterized by having at least two concentric circular prisms, the cross-sections of the prisms having a mountain shape that has a height (h) to width (w) ratio (h/w) of at least 0.3, the height (h) being no more than 0.5 mm. The mold is ideally a silicone mold. Cured products of the curable composition ideally have a breaking strain of 0.1%–30%.
(FR) L'invention concerne : une lentille de Fresnel qui comprend des prismes en forme de montagne ayant un pas étroit et qui s'inclinent fortement depuis des parties en saillie vers des parties en retrait de ceux-ci ; et un procédé de production de la lentille de Fresnel. La lentille de Fresnel selon l'invention est caractérisée en ce qu'elle est un produit moulé et durci d'une composition durcissable qui présente un angle de contact maximal de 50° avec un moule. La lentille de Fresnel est caractérisée en ce qu'elle comprend au moins deux prismes circulaires concentriques, les sections transversales des prismes ayant une forme de montagne dont le rapport (h/w) entre la hauteur (h) et la largeur (w) est d'au moins 0,3, la hauteur (h) n'étant pas supérieure à 0,5 mm. Le moule est idéalement un moule en silicone. Les produits durcis de la composition durcissable présentent idéalement une contrainte de rupture de 0,1 % à 30 %.
(JA) 山形形状のプリズムのピッチが狭く、プリズムの凸部から凹部への傾斜が急な形状を有するフレネルレンズ、及びこの製造方法を提供する。 本発明のフレネルレンズは、モールドに対する接触角が50°以下である硬化性組成物のモールド成型硬化物であり、プリズムを同心円状に2個以上有し、前記プリズムの断面が、高さ(h)と幅(w)の比(h/w)が0.3以上、且つ前記高さ(h)が0.5mm以下の山形形状であることを特徴とする。前記モールドとしては、シリコーンモールドが好ましい。また、前記硬化性組成物の硬化物の破断ひずみは0.1~30%であることが好ましい。
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