Title:
ＬＥＤ光束の制御のための装置および方法
Document Type and Number:
Japanese Patent JP6949122
Kind Code:
B2
Abstract:
A rectangular pulse generator system is operatively configured to generate a generator output signal, the generator output signal formed as a base rectangular waveform gated by a modulating rectangular waveform, the base rectangular waveform having a first frequency and the modulating rectangular waveform having a second frequency less than the first frequency. A low-pass filter coupled to the rectangular pulse generator system is configured to receive a filter input signal representative of the generator output signal and to produce a filter output signal representative of the filter input signal. A voltage-controlled current source coupled to the low-pass filter generates a drive signal conducted by at least one LED producing a light flux determined by the current level of the LED drive signal. Methods are devised for calibration and for setting the average light flux level.
Inventors:
Edward Bee Stoneham
Application Number:
JP2019538570A
Publication Date:
October 13, 2021
Filing Date:
October 02, 2017
Export Citation:
Assignee:
Edward Bee Stoneham
International Classes:
H05B45/327; H05B44/00
Domestic Patent References:
| JP2007097071A | ||||
| JP2014048384A |
Attorney, Agent or Firm:
Yasuhiko Murayama
Shinya Mitsuhiro
Tatsuhiko Abe
Shinya Mitsuhiro
Tatsuhiko Abe