Michael Best & Friedrich LLP
Light source unit and projector
A light source unit includes: a plurality of elemental light sources each including one or more light emitting elements and one or more drive circuits; a control circuit; and a plurality of color band light characteristic measurement sections each configured to receive light to generate color band light characteristic measurement data. A plurality of the light emitting elements in the elemental light sources includes light emitting elements different in wavelength band of emission wavelength from one another. The color band light characteristic measurement sections are provided corresponding to a plurality of the wavelength bands. One or more of the color band light characteristic measurement sections include a first light intensity measurement section and a second light intensity measurement section. The control circuit generates light intensity indicating values and wavelength deviation indicating values, generates color phase indicating values, and performs first feedback control on the drive circuits.
Ushio Denki Kabushiki Kaisha
H H G G H G H H G H
H01S H04N G03B G03B H05B G03B H04N H04N G03B H05B
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Masashi Hirotaka Shohei Yuichi Takanori
Okamoto Yamada Tsukamoto Miura Samejima