KR960008351A - Focal lens and its mold - Google Patents
Focal lens and its mold Download PDFInfo
- Publication number
- KR960008351A KR960008351A KR1019940020122A KR19940020122A KR960008351A KR 960008351 A KR960008351 A KR 960008351A KR 1019940020122 A KR1019940020122 A KR 1019940020122A KR 19940020122 A KR19940020122 A KR 19940020122A KR 960008351 A KR960008351 A KR 960008351A
- Authority
- KR
- South Korea
- Prior art keywords
- curvature
- progressive
- mold
- cavity
- circular
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
- G02C7/063—Shape of the progressive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/0048—Moulds for lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
- G02C7/028—Special mathematical design techniques
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Eyeglasses (AREA)
Abstract
본 발명은 비구면 누진다초점 렌즈에서의 비점수차(非點收差) 및 왜곡수차(歪曲收差)의 현상을 제거하여 렌즈 전면부에 걸쳐 선명한 상을 확보할 수 있는 광학 유효곡율을 갖는 누진다촛점렌즈와 이의 모울드에 관한 것으로 원용부(2)의 요소곡율도는 누진부(3)의 제1요소위치(a1)곡율도와 동일한 수직 및 수평성상의 곡율도(A1, B1)로 형성되고, 상기 누진부(3)의 요소곡율도는 동일한 요소위치(a2∼a1)에서 동일한 수직 및 수평성상의 단계적 누진곡율도(A2∼An-1, B2∼n-1)로 형성되며, 상기 근용부(4)의 요소곡율도는 누진부(3)의 제n요소위치(an)와 동일한 수직 및 수평성상의 곡율도(An,Bn)로 형성되어 이루어져 있다.The present invention has an optically effective curvature that can remove astigmatism and distortion aberrations in an aspherical focal lens and secure a clear image over the front surface of the lens. Regarding the focus lens and the mold thereof, the element curvature of the far end portion 2 is formed with the curvatures A1 and B1 of the same vertical and horizontal properties as those of the first element position a1 of the progressive portion 3, The element curvature of the progressive part 3 is formed of the stepwise progressive curvatures A2 to An-1 and B2 to n-1 of the same vertical and horizontal properties at the same element positions a2 to a1. The element curvature diagram (4) is formed by the curvature diagrams An and Bn having the same vertical and horizontal properties as the n-th element position an of the progressive section 3.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 따른 누진다초점렌즈의 정면도.1 is a front view of a leaky focal lens according to the present invention;
제3도는 본 발명 렌즈에 있어서, 각 부위의 용소곡율도의 분포도.3 is a distribution diagram of the melting point curvature of each site in the lens of the present invention.
제6(다)와 (라)는 제4도에 대응되는 종래구조로서, 안구운동에 따른 양안의 동적시선 교차점을 나타낸 설명도이다.6 (c) and 6 (d) are conventional structures corresponding to FIG. 4, and are explanatory diagrams showing the intersections of dynamic eyes of both eyes according to eye movements.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940020122A KR0186066B1 (en) | 1994-08-16 | 1994-08-16 | Multifocal lens and its mould |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940020122A KR0186066B1 (en) | 1994-08-16 | 1994-08-16 | Multifocal lens and its mould |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960008351A true KR960008351A (en) | 1996-03-22 |
KR0186066B1 KR0186066B1 (en) | 1999-05-15 |
Family
ID=19390404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940020122A KR0186066B1 (en) | 1994-08-16 | 1994-08-16 | Multifocal lens and its mould |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0186066B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020060445A (en) * | 2001-01-11 | 2002-07-18 | 문재오 | Molding mold and glass mold for manufacturing multi focus eyeglasses lens formed using the same |
KR100900090B1 (en) * | 2007-07-10 | 2009-05-28 | 주식회사 드림옵티칼 | Convex Glass Mold For Progressive Addition Lens |
-
1994
- 1994-08-16 KR KR1019940020122A patent/KR0186066B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0186066B1 (en) | 1999-05-15 |
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Payment date: 20040809 Year of fee payment: 6 |
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