光学収差補正のためのマルチゾーン眼内レンズ

Title:

光学収差補正のためのマルチゾーン眼内レンズ

Document Type and Number:

Japanese Patent JP4808159

Kind Code:

B2

Abstract:

A multi-zonal monofocal ophthalmic lens comprises a first lens surface and a second lens surface disposed opposite the first lens surface. The first lens surface comprises at least two zones designated by successive integers i , the surface being characterized by a sag that varies according to the relationship: Sag = C i * r 2 1 + 1 - 1 + K i * C i 2 * r 2 + j = 0 M B ij * r - r i 2 ¢ j + j = 1 M T ij * r - r i - 1 2 ¢ j wherein C i is a base radius of curvature of the i th zone, K i an asphericity constant of the i th zone, r i is the height of the i th zone, and the Bij and Tij are boundary parameters selected to smoothly connect the zones, and M is an integer selected to provide a predetermined amount of smoothness over the Transition between zones. The zones are configured to focus light entering the zones from a distant point source to substantially a single point such that the light substantially falls within the range of the depth-of-focus of a spherical lens having an equivalent focal length.

More Like This:

WO/2021/211888	COMPOSITE LIGHT ADJUSTABLE INTRAOCULAR LENS WITH ADHESION PROMOTER
WO/2009/148091	INTRAOCULAR LENS INSERTING INSTRUMENT AND CARTRIDGE
WO/2007/112946	INTRAOCULAR LENS WITH DRUG DELIVERY SYSTEM ATTACHED THERETO

Inventors:

Alan Jay Lang
Chao Huawei

Application Number:

JP2006539865A

Publication Date:

November 02, 2011

Filing Date:

November 10, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ABBOTT MEDICAL OPTICS INC.

International Classes:

A61F2/16

Domestic Patent References:

JP2004537332A	2004-12-16
JPH11503250A	1999-03-23
JP2000511439A	2000-09-05
JPH04126144A	1992-04-27

Attorney, Agent or Firm:

Samejima Mutsumi
Kyousei Tamura
Takuji Yamada

Previous Patent: デスクトップ表現を描画するためのウィンドウを定義するデータ構造を格�...

Next Patent: トピック特異的言語モデルおよびトピック特異的ラベル統計によるユーザ�...