Appeal 2007-3322
Application 09/947,094
a light sensor disposed adjacent the mount structure
second side, the light sensor configured to detect light emitted
from the sampling LED;
an optical path between the sampling LED and the light
sensor, the optical path configured to prevent intrusion of light
not emitted from the sampling LED; and
a control mechanism in communication with the light
sensor and configured to adjust the current flow to the string of
LEDs in accordance with the light detected by said light sensor.
10. Rand discloses an array of LEDs used as backlighting for a
liquid crystal display, which array comprises a plurality of strings of LEDs.
(Rand Abstract).
11. Rand discloses a sampling LED in each string of LEDs and a
sensor for detecting the light emitted from the sampling LEDs, which sensor
is disposed in a side panel. (Rand col.2:66 to col.3:2, Fig. 1).
12. None of Rand’s sampling LEDs is disclosed as emitting light in
a direction altered or different from the direction of light emission from the
rest of the LEDs.
13. Hochstein discloses an array of LEDs mounted on a circuit
board, and states that the LEDs are electrically connected in series and/or
parallel. (Hochstein col.2:64 to col.3:3).
14. Hochstein discloses a light sensor coupled to one or more of the
LEDs in the array to measure the actual light output of the LED array.
(Hochstein col.3:31-40).
15. Hochstein’s light sensor 22 is positioned directly in front of an
LED opposite the LED’s mounting board. (Hochstein Fig. 1).
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Last modified: September 9, 2013