Title:
DIFFRACTIVE LENS MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/079528
Kind Code:
A1
Abstract:
Provided is a novel manufacturing method for a diffractive lens, whereby aperture and eccentricity effects can be suppressed and any multifocal focus effect can also be obtained in a more stable manner. At least two types of relief gratings (32) and (34), which provide focal distances having mutually differing primary diffraction light are overlaid in at least one diameter-direction area of a diffractive lens 10, a synchronized structure is set such that the lattice pitch of other relief gratings periodically matches the lattice pitch of the relief grating having the maximum lattice pitch among the overlaid relief gratings, the obtained relief grating (30) being formed on a surface (24) of an optical material (10).
Inventors:
KOBAYASHI, Atsushi (5-1-10, Takamoridai, Kasugai-sh, Aichi 32, 48700, JP)
小林敦 (〒32 愛知県春日井市高森台五丁目１番１０号 株式会社メニコン内 Aichi, 48700, JP)
SUZUKI, Hiroaki (5-1-10, Takamoridai, Kasugai-sh, Aichi 32, 48700, JP)
小林敦 (〒32 愛知県春日井市高森台五丁目１番１０号 株式会社メニコン内 Aichi, 48700, JP)
SUZUKI, Hiroaki (5-1-10, Takamoridai, Kasugai-sh, Aichi 32, 48700, JP)
Application Number:
JP2009/000020
Publication Date:
July 15, 2010
Filing Date:
January 06, 2009
Export Citation:
Assignee:
MENICON CO., LTD. (3-21-19, Aoi Naka-ku, Nagoya-sh, Aichi 06, 46000, JP)
株式会社メニコン (〒06 愛知県名古屋市中区葵三丁目２１番１９号 Aichi, 46000, JP)
KOBAYASHI, Atsushi (5-1-10, Takamoridai, Kasugai-sh, Aichi 32, 48700, JP)
小林敦 (〒32 愛知県春日井市高森台五丁目１番１０号 株式会社メニコン内 Aichi, 48700, JP)
株式会社メニコン (〒06 愛知県名古屋市中区葵三丁目２１番１９号 Aichi, 46000, JP)
KOBAYASHI, Atsushi (5-1-10, Takamoridai, Kasugai-sh, Aichi 32, 48700, JP)
小林敦 (〒32 愛知県春日井市高森台五丁目１番１０号 株式会社メニコン内 Aichi, 48700, JP)
International Classes:
G02B5/18; G02C7/04; G02C7/06
Attorney, Agent or Firm:
KASAI, Yoshitaka et al. (KASAI & NAKANE INTERNATIONAL, PATENT FIRM 1-681, Sakurabashi,Tsu-sh, Mie 03, 51400, JP)
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