Patent EP0635347A1 successfully refreshed from Google Patents.
EP0635347A1
Expired / Lapsed
EP
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Lens mold
Assignee: Novartis Pharma GmbH
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Filing: 1994-07-12
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Granted: —
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Expires: 2014-07-12
Abstract
Abstract A lens mold includes first (1) and second mold (2) members respectively having a concave (3) surface and a convex surface (4) for defining therebetween a lens cavity. One of the first and second mold members is configured to mechanically engage a ring of excess lens material upon polymerization of the lens material. Alternately, one of the first and second mold members includes a material formed along the periphery of a lens cavity (5) which causes the ring of excess lens material thereto. Furthermore, one of the first and second mold members is formed of a relatively transparent plastic material and includes an outer surface having an optical finish to permit optical inspection of a lens located on one of the concave and convex surfaces. Alternately, one of the first and second mold members is formed of a relatively opaque plastic material and includes an inner surface having an optical finish to permit optical inspection of a lens located on one of the concave and convex surfaces.
Inventors
- 👤 Kai C. Su
- 👤 Jack C. White
- 👤 Mushir Siddiqui
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:45
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/02; G01M11/0207; G01M11/0214; B; B29; B29C; B29C33/00; B29C33/0055; B29C33/38; B29C33/40; B29C33/44; B29D; B29D11/00; B29D11/00009; B29D11/00038; B29D11/00057; B29D11/0048; B29D11/00576; B29D11/00951; B29D11/0098; B29D11/0099; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0827; B29C35/0888; Y; Y10; Y10S; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
152 words
A lens mold comprising: a first mold member comprising a concave portion, said concave portion having a concave surface centered at a longitudinal axis of said first mold member, an outer rim located along a periphery of said concave surface, and ring engaging means disposed adjacent said outer rim for engaging, upon polymerization of a lens material within a lens cavity, excess lens material formed along an outer periphery of the lens cavity; and a second mold member comprising a convex portion having a convex surface, wherein the lens cavity is defined between said concave and convex surfaces when said outer rim of said concave portion of said first mold member is made to contact said convex portion of said second mold member; whereby, upon polymerization of the lens material and upon a separation of said first and second mold members, the excess lens material is engaged with said first mold member.
Claim 2
Dependent Claim
35 words
A lens mold according to claim 1, wherein said ring engaging means of said concave portion comprises an annular surface extending inwardly towards the longitudinal axis of said first mold member from said outer rim.
Claim 3
Dependent Claim
13 words
A lens mold according to claim 2, wherein said annular surface is frusto-conical.
Claim 4
Dependent Claim
42 words
A lens mold according to claim 1, wherein said ring engaging means of said concave portion comprises an annular surface extending substantially parallel to the longitudinal axis of the first mold member, and a notch formed in and along said annular surface.
Claim 5
Dependent Claim
30 words
A lens mold according to claim 4, wherein said notch defines a void within said annular surface having a rounded cross-section for receiving a portion of the excess lens material.
Claim 6
Dependent Claim
30 words
A lens mold according to claim 4, wherein said notch defines a void within said annular surface having a rectangular cross-section for receiving a portion of the excess lens material.
Claim 7
Dependent Claim
42 words
A lens mold according to claim 1, wherein said ring engaging means of said concave portion comprises an annular surface extending substantially parallel to the longitudinal axis of said first mold member, and a lip member extending outwardly from said annular surface.
Claim 8
Dependent Claim
93 words
A lens mold according to claim 1, wherein said ring engaging means of said concave portion comprises a first annular surface extending outwardly along the periphery of the lens cavity from the outer rim, and an annular member extending from said first annular surface, said annular member defining a second annular surface extending inwardly towards the longitudinal axis of said first mold member from said first annular surface, wherein an annular void for receiving the excess lens material is defined by said outer rim, said first annular surface and said second annular surface.
Claim 9
Dependent Claim
87 words
A lens mold according to claim 1, wherein said ring engaging means of said concave portion comprises an annular member made of a first plastic material disposed along a periphery of said outer rim, and wherein said second mold member is made of a second plastic material, and wherein said first plastic material is more polar relative to said second plastic material, whereby the excess lens material will exhibit an affinity to adhere to said annular member upon the separation of said first and second mold members.
Claim 10
Dependent Claim
66 words
A lens mold according to claim 9, wherein said first mold member at said concave surface is made of a third plastic material, and wherein said second plastic material is more polar relative to said third plastic material, whereby a polymerized lens within the lens cavity will exhibit an affinity to adhere to said convex surface upon the separation of said first and second mold members.
Claim 11
Dependent Claim
65 words
A lens mold according to claim 1, wherein said second mold member is formed of a relatively transparent plastic material and comprises an outer surface opposite said convex surface, said outer surface having an optical finish to permit optical inspection of a lens located on said convex surface by transmitting light through said outer surface, said second mold member, said convex surface and the lens.
Claim 12
Dependent Claim
55 words
A lens mold according to claim 1, wherein said second mold member is formed of a relatively opaque plastic material, and wherein said convex surface is provided with an optical finish to permit optical inspection of a lens located on said convex surface by reflecting light off of said convex surface and through the lens.
Claim 13
Dependent Claim
66 words
A lens mold according to any one of claims 1-8 and 11-12, wherein said first mold member is made of a relatively non-polar plastic material, and said second mold member is made of a relatively polar plastic material, whereby a polymerized lens within the lens cavity will exhibit an affinity to adhere to said convex surface upon the separation of said first and second mold members.
Claim 14
Dependent Claim
152 words
A lens mold comprising: a first mold member comprising a convex portion, said convex portion having a convex surface centered at a longitudinal axis of said first mold member, an outer rim located along a periphery of said convex surface, and ring engaging means disposed adjacent said outer rim for engaging, upon polymerization of a lens material within a lens cavity, excess lens material formed along an outer periphery of the lens cavity; and a second mold member comprising a concave portion having a concave surface, wherein the lens cavity is defined between said convex and concave surfaces when said outer rim of said convex portion of said first mold member is made to contact said concave portion of said second mold member; whereby, upon polymerization of the lens material and upon a separation of said first and second mold members, the excess lens material is engaged with said first mold member.
Claim 15
Dependent Claim
35 words
A lens mold according to claim 14, wherein said ring engaging means of said convex portion comprises an annular surface extending inwardly towards the longitudinal axis of said first mold member from said outer rim.
Claim 16
Dependent Claim
13 words
A lens mold according to claim 15, wherein said annular surface is frusto-conical.
Claim 17
Dependent Claim
42 words
A lens mold according to claim 14, wherein said ring engaging means of said convex portion comprises an annular surface extending substantially parallel to the longitudinal axis of the first mold member, and a notch formed in and along said annular surface.
Claim 18
Dependent Claim
30 words
A lens mold according to claim 17, wherein said notch defines a void within said annular surface having a rounded cross-section for receiving a portion of the excess lens material.
Claim 19
Dependent Claim
30 words
A lens mold according to claim 17, wherein said notch defines a void within said annular surface having a rectangular cross-section for receiving a portion of the excess lens material.
Claim 20
Dependent Claim
42 words
A lens mold according to claim 14, wherein said ring engaging means of said convex portion comprises an annular surface extending substantially parallel to the longitudinal axis of said first mold member, and a lip member extending outwardly from said annular surface.
Claim 21
Dependent Claim
92 words
A lens mold according to claim 14, wherein said ring engaging means of said convex portion comprises a first annular surface extending outwardly along the periphery of the lens cavity from the outer rim, and an annular member extending from said first annular surface, said annular member defining a second annular surface extending inwardly towards the longitudinal axis of said first mold member from said first annular surface, wherein an annular void for receiving the excess lens material is defined by said outer rim, first annular surface and said second annular surface.
Claim 22
Dependent Claim
87 words
A lens mold according to claim 14, wherein said ring engaging means of said convex portion comprises an annular member made of a first plastic material disposed along a periphery of said outer rim, and wherein said second mold member is made of a second plastic material, and wherein said first plastic material is more polar relative to said second plastic material, whereby the excess lens material will exhibit an affinity to adhere to said annular member upon the separation of said first and second mold members.
Claim 23
Dependent Claim
66 words
A lens mold according to claim 22, wherein said first mold member at said convex surface is made of a third plastic material, and wherein said second plastic material is more polar relative to said third plastic material, whereby a polymerized lens within the lens cavity will exhibit an affinity to adhere to said concave surface upon the separation of said first and second mold members.
Claim 24
Dependent Claim
65 words
A lens mold according to claim 14, wherein said second mold member is formed of a relatively transparent plastic material and comprises an outer surface opposite said concave surface, said outer surface having an optical finish to permit optical inspection of a lens located on said concave surface by transmitting light through said outer surface, said second mold member, said concave surface and the lens.
Claim 25
Dependent Claim
55 words
A lens mold according to claim 14, wherein said second mold member is formed of a relatively opaque plastic material, and wherein said concave surface is provided with an optical finish to permit optical inspection of a lens located on said concave surface by reflecting light off of said concave surface and through the lens.
Claim 26
Dependent Claim
63 words
A lens mold according to claim 14 and 24, wherein said first mold member is made of a relatively non-polar plastic material, and said second mold member is made of a relatively polar plastic material, whereby a polymerized lens within the lens cavity will exhibit an affinity to adhere to said concave surface upon the separation of said first and second mold members.
Claim 27
Dependent Claim
62 words
A lens mold according to claim 1, comprising a mold member formed of a relatively transparent plastic material and having an outer surface opposite a convex surface, said outer surface having an optical finish to permit optical inspection of a lens located on said convex surface by transmitting light through said outer surface, said mold member, said convex surface and the lens.
Claim 28
Dependent Claim
55 words
A lens mold according to claim 1, comprising a mold member formed of a relatively opaque plastic material and having a convex surface portion defining a convex surface, said convex surface having an optical finish to permit optical inspection of a lens located on said convex surface by reflecting light off said convex surface portion.
Claim 29
Dependent Claim
62 words
A lens mold according to claim 1, comprising a mold member formed of a relatively transparent plastic material and having an outer surface opposite a concave surface, said outer surface having an optical finish to permit optical inspection of a lens located on said concave surface by transmitting light through said outer surface, said mold member, said concave surface and the lens.
Claim 30
Dependent Claim
57 words
A lens mold according to claim 1, comprising a mold member formed of a relatively opaque plastic material and having a concave surface portion defining a concave surface, said concave surface portion having an optical finish to permit optical inspection of a lens located on said concave surface by reflecting light off of said concave surface portion.
References Cited (Backward Citations)
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