Controlling the transmission of light from light sources
First Claim
Patent Images
1. A lamp having a light transmissive envelope containing a light source, the envelope being at least partially coated with material the light transmission of which varies with voltage applied thereto, the lamp further comprising means for applying a voltage to the material.
1 Assignment
0 Petitions
Accused Products
Abstract
The envelope (6) of a light source is at least partly coated with electrochromic material (20), sandwiched between two conductive layers (21,22). A voltage applied to the electrochromic material by way of the conductive layers varies the intensity and/or color of the light from the source.
27 Citations
18 Claims
- 1. A lamp having a light transmissive envelope containing a light source, the envelope being at least partially coated with material the light transmission of which varies with voltage applied thereto, the lamp further comprising means for applying a voltage to the material.
-
9. A lamp comprising:
-
a light source; a light transmissive envelope surrounding the light source; the envelope being at least partially coated with material the light transmission of which varies with voltage applied thereto; and an electrode connected to the material for conducting a voltage from an associated voltage source thereto. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification