Patent US4077722A successfully refreshed from Google Patents.
US4077722A
Expired / Lapsed
US
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Precision blocking of lens blanks
Assignee: Individual
•
Filing: 1976-02-12
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Granted: 1978-03-07
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Expires: 1996-02-12
Abstract
Abstract Method and apparatus for the precision blocking of lens blanks using a holder to de-center the blank and fix its optical axis. The holder is then used to position the blank with respect to a blocker by which an alloy hub or "block" is removably affixed to the blank so that it can be properly gripped for conversion into a finished lens product.
Inventors
- 👤 Bela Joseph Bicskei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:18
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005; B24B13/0055; B23; B23Q; B23Q17/00; B23Q17/22; Y; Y10; Y10S; Y10S248/00; Y10S248/913
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
83 words
The method of calibrating a lens member which comprises the steps of: a. inserting a lens blank into a first portion of a holder which is adjustable with respect to a second portion thereof; b. adjusting the first portion of the holder relative to the second portion thereof in order to align the lens in accordance with a prescribed optical criterion; and c. de-positioning the lens blank thus adjusted by a prescribed amount by moving said first portion relative to said second portion.
Claim 2
Independent Claim
83 words
The method of calibrating a lens member which comprises the steps of: a. inserting a lens blank into a first portion of a holder which is adjustable with respect to a second portion thereof; b. adjusting the first portion of the holder relative to the second portion thereof in order to align the lens in accordance with a prescribed optical criterion; and c. de-positioning the lens blank thus adjusted by a prescribed amount by moving said first portion relative to said second portion.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein a temporary hub is formed on the lens blank after it has been de-positioned.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein said hub is formed using a blocker.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said lens member is rotatable with respect to said first portion holder.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein said first portion of a holder is translatable with respect to said second portion of a holder.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein said first and second portions of a holder have at least one adjustable scale.
Claim 8
Dependent Claim
25 words
The method of claim 6 wherein said scale is zeroed after the adjusting step and controllably moved from its zeroed position in the depositioning step.
Claim 9
Dependent Claim
25 words
The method of claim 1 wherein the optical criterion is satisfied when the holder is adjusted to locate the optical center of said lens blank.
Claim 10
Dependent Claim
25 words
The method of claim 1 wherein the optical criterion is satisfied when the holder is adjusted to locate the optical axis of said lens blank.
Claim 11
Dependent Claim
15 words
The method of claim 1 wherein the optical criterion is satisfied by using a lensometer.
References Cited (Backward Citations)
US1542112A
Cited
US3049766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |