EP0092364A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A method of and apparatus for dimensioning a lens to fit a spectacle frame
Assignee: HANWELL OPTICAL CO Ltd
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Filing: 1983-04-12
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Granted: —
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Expires: 2003-04-12
Abstract
Abstract Trays, each containing either a spectacle frame and a pair of lenses to be preshaped, or a lens template, are taken to a VDU 3 with an IR bar code reading pen 3'. Depending upon the response of a central computer 1 to data fed in by the pen 3' and keyed in by an operator, the tray is then (A) routed directly to a lens edger unit 4, or (B and C) routed indirectly to the unit 4, via either (B) a frame encoder unit 6 which measures and encodes the internal dimensions of a «first-time» frame, or (C) a template encoder unit 7 which measures and encodes the external dimensions of the template. As each tray on route A or B moves towards the unit 4, an edger driving file particularto the frame in the tray is recalled by the computer 1 from a mass data store (2) and modified and the modified file held temporarily in a buffer store 5 until required by the unit 4.
Inventors
- 👤 Albert Leonard Miles
- 👤 Nigel Vaughan Smith
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:54
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/42; G05B19/4202; G05B19/4207; B; B24; B24B; B24B17/00; B24B17/10; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14; B24B9/144; B24B9/148; C; C03; C03B; C03B33/00; C03B33/02; C03B33/04; G02; G02C; G02C13/00; G02C13/003
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
55 words
A method of dimensioning a lens to fit a spectacle frame, comprising obtaining from a store (2,5) a representation of the internal dimensions of a spectacle frame, and utilizing said representation in controlling the operation of a lens dimensioning device (4), characterized in that said representation comprises data in the form of an electrical signal.
Claim 2
Independent Claim
55 words
A method of dimensioning a lens to fit a spectacle frame, comprising obtaining from a store (2,5) a representation of the internal dimensions of a spectacle frame, and utilizing said representation in controlling the operation of a lens dimensioning device (4), characterized in that said representation comprises data in the form of an electrical signal.
Claim 3
Independent Claim
25 words
A method according to any preceding claim, and further comprising, between said obtaining and said utilizing, temporarily holding said data in a buffer store (5).
Claim 4
Dependent Claim
58 words
A method according to claim 1 or 2, and further comprising measuring the internal dimensions of a spectacle frame and encoding the same to produce a representation of the same comprised of data in the form of an electrical signal, and utilizing the latter signal to supply the latter data to said store (2) for subsequent recall therefrom.
Claim 5
Dependent Claim
59 words
A method according to claim 1, 2 or 3, and further comprising measuring the external dimensions of a lens template and encoding the same to produce a representation of the same comprised of data in the form of an electrical signal, and utilizing the latter signal to supply the latter data to said store (2) for subsequent recall therefrom.
Claim 6
Dependent Claim
55 words
A method according to claim 3 or 4, wherein said measuring comprises emitting a beam of radiation transversely to the frame or the template and overlapping the internal periphery of the frame or the external periphery of the template, and determining where the beam is obscured by the presence of the frame or the template.
Claim 7
Dependent Claim
89 words
A method according to claim 3 or 4, wherein said measuring comprises causing a probe (8) to ride along the internal periphery of the frame or the external periphery of the template, and determining the movement of the probe (8) owing to the dimensions of that periphery. template to produce a representation of the same comprised of data in the form of an electrical signal, said electrical means (1) serving to utilize the latter signal to supply the latter data to said storing means (2) for subsequent recall therefrom.
Claim 8
Dependent Claim
26 words
A method according to claim 6, wherein said probe (8) rides stepwise along said periphery and said measuring is performed at the end of each step.
Claim 9
Independent Claim
41 words
A method according to any preceding claim, wherein the operation of said lens dimensioning device (4) includes turning said lens stepwise about an axis and displacing said axis stepwise towards and away from a lens edge cutter of said device (4).
Claim 10
Dependent Claim
11 words
A lens dimensioned by a method according to any preceding claim.
Claim 11
Dependent Claim
91 words
Apparatus for dimensioning a lens to fit a spectacle frame, comprising storing means (2,5) from which can be obtained a representation of the internal dimensions of a spectacle frame, and a lens dimensioning device (4) for operation utilizing said representation, characterized in that said storing means (2,5) comprises data storing means (2,5) and said apparatus further comprises electrical means (1) arranged to obtain said representation from said storing means (2,5) as data in the form of an electrical signal and to utilize said signal in controlling"the operation of said device (4).
Claim 12
Dependent Claim
91 words
Apparatus for dimensioning a lens to fit a spectacle frame, comprising storing means (2,5) from which can be obtained a representation of the internal dimensions of a spectacle frame, and a lens dimensioning device (4) for operation utilizing said representation, characterized in that said storing means (2,5) comprises data storing means (2,5) and said apparatus further comprises electrical means (1) arranged to obtain said representation from said storing means (2,5) as data in the form of an electrical signal and to utilize said signal in controlling"the operation of said device (4).
Claim 13
Dependent Claim
41 words
Apparatus according to claim 10, wherein said data storing means (2,5) comprises a mass storing means (2) and a buffer storing means (5) for tenporarily holding data obtained from said mass storing means (2) prior to the utilization of that data.
Claim 14
Dependent Claim
68 words
Apparatus according to claim 10 or 11, and further comprising a frame encoding device (6) for measuring and encoding the internal dimensions of a spectacle frame (9) to produce a representation of the same comprised of data in the form of an electrical signal, said electrical means (1) serving to utilize the latter signal to supply the latter data to said storing means (2) for subsequent recall therefrom.
Claim 15
Dependent Claim
26 words
Apparatus according to claim 10, 11 or 12, and further comprising a template encoding device (7) for measuring and encoding the external dimensions of a lens
References Cited (Backward Citations)
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