Optically variable one-way mirror

• US 3,280,701 A
• Filed: 06/07/1965
• Issued: 10/25/1966
• Est. Priority Date: 09/05/1961
• Status: Expired due to Term

• Current Assignee: Fenlon Donnelly John, Richard C. Cooper
• Sponsoring Entity: Fenlon Donnelly John, Richard C. Cooper
• Inventors: FENLON DONNELLY JOHN, Cooper, Richard C.
• Time in USPTO: 505 Days
• US Class Current: 359/267
• CPC Class Codes: B32B 17/10036 : comprising two outer glass sheet
• CPC Class Codes: B32B 17/10486 : photochromic
• CPC Class Codes: B32B 17/10761 : containing vinyl acetal
• CPC Class Codes: B60R 1/08 : involving special optical features, e.g. avoiding blind spots , e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors B60R1/025, B60R1/10 take precedence
• CPC Class Codes: G02B 5/08 : Mirrors vehicle mirrors involving special optical features B60R1/08
• CPC Class Codes: G02F 1/176 : using acid- based indicators

Abstract

Claims

1. AN OPTICALLY VARIABLE MIRROR, COMPRISING:

A SUPPORTED ONE-WAY MIRROR SURFACE COMPRISING A PARTIALLY REFLECTIVE COATING ON A TRANSPARENT SURFACE;

SAID SURFACE BEING GENERALLY TRANSPARENT WHEN THE LIGHT INTENSITY INCIDENT TO ONE SIDE THEREOF IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO THE OPPOSITE SIDE, AND SAID SURFACE COMPRISING A REFLECTIVE MIRROR SURFACE WHEN THE LIGHT INTENSITY INCIDENT TO SAID OPPOSITE SIDE IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO SAID ONE SIDE;

A FIRST SUBSTANCE ADJACENT SAID ONE SIDE;

FIRST MEANS TO APPLY A PREDETERMINED ENERGY POTENTIAL TO SAID FIRST SUBSTANCE;

SAID FIRST SUBSTANCE HAVING AN OPACITY VARIABLE WITH SAID ENERGY POTENTIAL APPLIED THERETO SUCH THAT THE CHARACTERISTICES OF SAID SURFACE MAY BE ALTERED BETWEEN TRANSPARENCY AND REFLECTIVITY;

AND A SECOND SUBSTANCE ADJACENT SAID OPPOSITE SIDE;

SECOND MEANS TO APPLY A PREDETERMINED TYPE OF ENERGY POTENTIAL TO SAID SECOND SUBSTANCE;

SAID SECOND SUBSTANCE BEING CAPABLE OF COLOR VARIATIONS WITH THE LATTER MENTIONED TYPE OF APPLIED ENERGY SUCH THAT THE REFLECTIVITY BRIGHTNESS FROM SAID SURFACE MAY BE VARIED.