| 摘要 |
<p>PURPOSE: To uniformize the light emitting output distribution after the passage of a monocular current by shortening a strobe time or reducing a light emitting current in the light emitting element of the central part of a monocular lens and extending the strobe time or increasing the light emitting current in the light emitting element of the peripheral part thereof. CONSTITUTION: The operation of a 1/2 frequency dividing circuit 12 is started by a strobe signal and a clock signal is divided to 1/2 in frequency to be supplied to counter main bodies C1-C4. The data of shift registers SR1-SR4 are latched in synchronous relation to the strobe signal by the counter main bodies C1-C4 to input an initial value. The counter main bodies C1-C4 are connected to AND circuits A1-A64 by 16 and the counter main body C1 controls the AND circuits corresponding to 16 bits of the central part of LEDs and the counter main body C2 controls the AND circuits corresponding to respective 8 bits on both side thereof while counter main body C3 controls the AND circuits corresponding to respective 8 bits on both sides thereof and the counter main body C4 controls the AND circuits corresponding to respective 8 bits on both sides thereof.</p> |
