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 Title: |
US3944346:
Polarizing spectacles
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Shindler, Anthony; Brookline, MA
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| Assignee: |
American Optical Corporation, Southbridge, MA
other patents from AMERICAN OPTICAL CORPORATION (25915) (approx. 841)
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| Published / Filed: |
1976-03-16
/ 1974-11-20
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| Application Number: |
US1974000525542
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| IPC Code: |
Advanced:
G02B 27/28;
G02C 7/12;
Core:
G02C 7/00;
more...
IPC-7:
G02B 5/30;
G02C 7/12;
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| ECLA Code: |
G02B27/28A; G02C7/12;
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| U.S. Class: |
Current:
351/049;
359/501;
Original:
351/049;
350/159;
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| Field of Search: |
351/049
350/156,159
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| Priority Number: |
| 1974-11-20 |
US1974000525542 |
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| Abstract: |
Spectacles having a face-formed readily separable two-section eyeglass frame front wherein a first forward section of the frame front supports a pair of fixed non-circular light-polarizing lenses and a rearward second section supports a rotatable light-polarizing lens in alignment with each forwardly disposed lens. A manually operable rear lens rotating mechanism is provided for selectively rotating the two rearward lenses in unison to simultaneously equally rotationally alter the orientation of axes of polarization of these lenses relative to axes of polarization of the fixed forwardly disposed lenses for correspondingly varying the intensity of light permitted to pass through each system of front and rear lenses of the spectacles.
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| Attorney, Agent or Firm: |
Berkenstock, Jr., H. R. ;
Nealon, William C. ;
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| Primary / Asst. Examiners: |
Sacher, Paul A.;
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 8 claims |
I claim:
1. In polarizing spectacles having a frame front comprising a pair of right and left eye variable density dual lens systems, a nose engaging bridge portion and rearwardly directed temples for supporting the spectacles before the eyes of a wearer, the improvement comprising:
- said frame front including readily separable juxtapositioned forward and rear lens supporting sections each having a pair of lens rims interconnected by a bridge portion for supporting right and left eye light-polarizing lenses, said sections being correspondingly face-formed by a bend in said bridge portions;
- means for releasably fastening said lens supporting sections together;
- a first of said sections of said frame front fixedly supporting a first right and a first left eye light-polarizing lens, said first right and left eye lenses having their respective axes of polarization aligned in a common direction;
- the second of said sections of said frame front supporting a second right and a second left eye lens each juxtapositioned with a corresponding one of said first right and first left eye lenses when said sections are fastened together, said second lenses being rotatable within said rims of said second section; and
- manually operable universally flexible lens actuating means extending across said spectacles around said bend in said bridge portions and interconnecting said second right and left eye lenses, said actuating means having a handle intermediately of its connection to said second lenses for manually selectively effecting lateral movement thereof to simultaneously equally rotate said second lenses relative to said first lenses and thereby simultaneously identically vary the density to light of said right and left eye dual lens systems, said flexibility of said lens actuating means lending it readily conformable in shape to said face-form bend of said frame front throughout all ranges of said manual movement whereby said second right and left eye lens rotation may be effected smoothly, with ease with accurate duplication of the extent of rotation of each of said second lenses to afford accurate duplication of optical density of said right and left eye dual lens systems at all times.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 20 U.S. patent(s) that reference this one
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