Light apertures
First Claim
Patent Images
1. A LIGHT-FILTERING DEVICE COMPRISING A SOLID, TRANSPARENT ELEMENT HAVING IN CONJUCTION THEREWITH PHOTOCHROMIC BODIES DISTRIBUTED IN A PLURALITY OF CONCENTRIC ZONES, THE MAGNITUDE OF THE RESPONSE OF SAID PHOTOCHROMIC BODIES TO ITINERANT LIGHT IN EACH RESPECTIVE ZONE INCREASING AS A FUNCTION OF THE DISTANCE OF SAID ZONE FROM THE CENTER OF SAID ELEMENT.
0 Assignments
0 Petitions
Accused Products
29 Citations
1 Claim
-
1. A LIGHT-FILTERING DEVICE COMPRISING A SOLID, TRANSPARENT ELEMENT HAVING IN CONJUCTION THEREWITH PHOTOCHROMIC BODIES DISTRIBUTED IN A PLURALITY OF CONCENTRIC ZONES, THE MAGNITUDE OF THE RESPONSE OF SAID PHOTOCHROMIC BODIES TO ITINERANT LIGHT IN EACH RESPECTIVE ZONE INCREASING AS A FUNCTION OF THE DISTANCE OF SAID ZONE FROM THE CENTER OF SAID ELEMENT.
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeEdwin H. Land
-
Original AssigneeEdwin H. Land
-
InventorsLand, Edwin H.
-
Application NumberUS04/418,724Time in Patent Office1,336 DaysField of SearchUS Class Current359/241CPC Class CodesG02B 5/23 Photochromic filters
