An optical receiver is provided with a photoelectric converter that outputs an electrical signal according to light that is received by a light-receiving region. The optical receiver is provided with a condensing lens and optical filter that are located in an optical path from where signal light enters towards the light-receiving region. The condensing lens condenses the signal light onto the light-receiving region. The optical filter reflects light having a first wavelength that is included in the signal light using a front surface thereof and reflects light having a second wavelength that is included in the signal light using a rear surface thereof that faces the front surface so that the light is emitted through the front surface.
申请公布号
US2013302042(A1)
申请公布日期
2013.11.14
申请号
US201213611979
申请日期
2012.09.12
申请人
OHATA NOBUO;SHIRAO MIZUKI;MOCHIZUKI KEITA;MITSUBISHI ELECTRIC CORPORATION