GB1164732A - Improvements in or relating to Apparatus for Mounting an Untrimmed Spectacle Lens for Trimming on a Trimming Machine - Google Patents
Improvements in or relating to Apparatus for Mounting an Untrimmed Spectacle Lens for Trimming on a Trimming MachineInfo
- Publication number
- GB1164732A GB1164732A GB978667A GB978667A GB1164732A GB 1164732 A GB1164732 A GB 1164732A GB 978667 A GB978667 A GB 978667A GB 978667 A GB978667 A GB 978667A GB 1164732 A GB1164732 A GB 1164732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- axes
- centre
- lines
- suction cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
- B24B13/0055—Positioning of lenses; Marking of lenses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Eyeglasses (AREA)
Abstract
1,164,732. Grinding. SOC. DES LUNETIERS. 1 March, 1967 [14 May, 1966], No. 9786/67. Heading B3D. A device for adjusting the position of an optical lens on a suction cup for transfer thereof to a grinding machine as a function of the pupillary distance of the wearer and the centre lines of the spectacle frame comprises a suction cup carrier, a transparent plate having engraved thereon the perpendicular centre lines AA, BB corresponding to the centre lines of the spectacle frame which are coincident with the centre lines of a template of the lens, a photograph of the spectacle frame having centre lines printed thereon corresponding to the centre lines AA, BB and the pupillary axes C<SP>1</SP>C<SP>1</SP>, D<SP>1</SP>D<SP>1</SP>, the optical lens having centre lines CC, DD, means for positioning the suction cup carrier coincident with the point of intersection of the centre lines AA, BB corresponding to those of the spectacle frame and means for positioning the centre lines CC, DD of the lens coincident with the pupillary axis C<SP>1</SP>C1, D1D<SP>1</SP>. With the lens 2, Fig. 1, mounted on the suction cup 1, the edge of the lens is trimmed by a grinding wheel 5 under the control of a template 4 and follower 6. The spectacle frame 12, Fig. 2, and template have axes AA, BB the suction cup has axes A<SP>1</SP>A<SP>1</SP>, B<SP>1</SP>B<SP>1</SP> and the lens 2 has axes CC, DD crossing at O which is to be coincident with the pupillary axis P at the intersection of axes C<SP>1</SP>C<SP>1</SP>, D<SP>1</SP>D<SP>1</SP>. A photograph, Fig. 3, is produced on which the axes AA, BB and C<SP>1</SP>C<SP>1</SP>, D<SP>1</SP>D1 are printed with the optical centre of the lens displaced a distance D from the mechanical centre of the spectacle frame. The photograph is placed under a transparent plate 13 which has engraved lines thereon corresponding to the axes AA, BB and is arranged so that these lines are coincident with the corresponding lines on the photograph. The lens is then positioned so that its axes CC, DD are coincident with the corresponding axes C<SP>1</SP>C<SP>1</SP>, D<SP>1</SP>D<SP>1</SP> on the photograph. The transparent plate is then placed with the centre of the axes AA, BB coincident with the centre line of a carrier 17, Fig. 5, for the suction cup 1 which is pressed on to the lens by a presser 16. In another embodiment, the suction cup is carried by a pivoted arm. In a further embodiment, the lens and the photograph and transparent plate are arranged side by side and moved according to the centre lines on a rule or rules, while in another embodiment, an optical system consisting of a prism and reflectors is used to determine the positions of the photograph, transparent plate, lens and suction cup.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR61658A FR1493482A (en) | 1966-05-14 | 1966-05-14 | Device for placing spectacle lenses on the grinding machine according to the pupillary distance of the wearer and the center distance of the arches of the frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1164732A true GB1164732A (en) | 1969-09-17 |
Family
ID=8608684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB978667A Expired GB1164732A (en) | 1966-05-14 | 1967-03-01 | Improvements in or relating to Apparatus for Mounting an Untrimmed Spectacle Lens for Trimming on a Trimming Machine |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1652171C3 (en) |
| GB (1) | GB1164732A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117287A (en) * | 1981-10-07 | 1983-10-12 | Victor Freeman | Lens edge grinding machine |
| DE3530649A1 (en) * | 1985-08-28 | 1987-03-12 | Eschenbach Optik Gmbh & Co | Method for fitting and adjusting magnifying visual aids, and telescopic spectacles produced thereby |
| FR3022641A1 (en) * | 2014-06-23 | 2015-12-25 | Essilor Int | CENTER-BLOCKER APPARATUS FOR OPHTHALMIC LENS |
| CN106767342A (en) * | 2016-11-29 | 2017-05-31 | 福建福光股份有限公司 | Ball core type grinder board measures core device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4012661A1 (en) * | 1990-04-20 | 1991-10-24 | Wernicke & Co Gmbh | Lens blank parallax-free centring instrument - incorporates liquid-crystal screen displaying template and scale |
-
1967
- 1967-03-01 GB GB978667A patent/GB1164732A/en not_active Expired
- 1967-03-09 DE DE19671652171 patent/DE1652171C3/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117287A (en) * | 1981-10-07 | 1983-10-12 | Victor Freeman | Lens edge grinding machine |
| DE3530649A1 (en) * | 1985-08-28 | 1987-03-12 | Eschenbach Optik Gmbh & Co | Method for fitting and adjusting magnifying visual aids, and telescopic spectacles produced thereby |
| FR3022641A1 (en) * | 2014-06-23 | 2015-12-25 | Essilor Int | CENTER-BLOCKER APPARATUS FOR OPHTHALMIC LENS |
| WO2015197970A1 (en) * | 2014-06-23 | 2015-12-30 | Essilor International (Compagnie Generale D'optique) | Ophthalmic lens centring-blocking apparatus |
| US10306119B2 (en) | 2014-06-23 | 2019-05-28 | Essilor International | Ophthalmic lens centring-blocking apparatus |
| CN106767342A (en) * | 2016-11-29 | 2017-05-31 | 福建福光股份有限公司 | Ball core type grinder board measures core device |
| CN106767342B (en) * | 2016-11-29 | 2019-02-01 | 福建福光股份有限公司 | Ball core type grinder board measures core device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1652171C3 (en) | 1975-04-24 |
| DE1652171A1 (en) | 1970-05-27 |
| DE1652171B2 (en) | 1974-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |