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    • 4. 发明授权
    • Wavelength conversion optical device, laser light source, and image display optical device
    • 波长转换光学器件,激光光源和图像显示光学器件
    • US07583431B2
    • 2009-09-01
    • US11884885
    • 2006-02-22
    • Hiroyuki FuruyaKiminori MizuuchiAkihiro MorikawaKazuhisa Yamamoto
    • Hiroyuki FuruyaKiminori MizuuchiAkihiro MorikawaKazuhisa Yamamoto
    • G02F2/02H01S3/10H01S3/30
    • G02F1/37G02F2001/372
    • A wavelength conversion optical device is provided with a fundamental wave light source (301) which outputs a fundamental wave (L11) including a P polarized light and an S polarized light that are perpendicular to each other, and two wavelength conversion mechanisms (303a, 303b) each having a polarization inversion formation part which wavelength-converts the fundamental wave (L11) to generate harmonic waves, and the first-stage wavelength conversion mechanism (303a) performs wavelength conversion of the P polarized light of the fundamental wave (L11) while the second-stage wavelength conversion mechanism (303b) performs wavelength conversion of the S polarized light of the fundamental wave (L11), whereby absorption of a second harmonic wave (green light) due to a third harmonic wave (ultraviolet light) is reduced, and stability and reliability of the wavelength-converted light output are enhanced, thereby providing a wavelength conversion optical device which can output a wavelength-converted light capable of improving the image quality of the displayed image.
    • 波长转换光学元件设置有输出包括彼此垂直的P偏振光和S偏振光的基波(L11)的基波光源(301)和两个波长转换机构(303a,303b) )分别具有波长转换基波(L11)以产生谐波的偏振反转形成部,第一级波长转换机构(303a)进行基波的P偏振光(L11)的波长转换,同时 第二级波长转换机构(303b)进行基波的S偏振光(L11)的波长转换,由此减少由于三次谐波(紫外线)引起的二次谐波(绿光)的吸收, 提高了波长转换光输出的稳定性和可靠性,从而提供能够输出波长c的波长转换光学装置 能够改善显示图像的图像质量的转换光。
    • 5. 发明申请
    • Wavelength Conversion Optical Device, Laser Light Source, and Image Display Optical Device
    • 波长转换光学器件,激光光源和图像显示光学器件
    • US20080158638A1
    • 2008-07-03
    • US11884885
    • 2006-02-22
    • Hiroyuki FuruyaKiminori MizuuchiAkihiro MorikawaKazuhisa Yamamoto
    • Hiroyuki FuruyaKiminori MizuuchiAkihiro MorikawaKazuhisa Yamamoto
    • G02F1/37
    • G02F1/37G02F2001/372
    • A wavelength conversion optical device is provided with a fundamental wave light source (301) which outputs a fundamental wave (L11) including a P polarized light and an S polarized light that are perpendicular to each other, and two wavelength conversion mechanisms (303a,303b) each having a polarization inversion formation part which wavelength-converts the fundamental wave (L11) to generate harmonic waves, and the first-stage wavelength conversion mechanism (303a) performs wavelength conversion of the P polarized light of the fundamental wave (L11) while the second-stage wavelength conversion mechanism (303b) performs wavelength conversion of the S polarized light of the fundamental wave (L11), whereby absorption of a second harmonic wave (green light) due to a third harmonic wave (ultraviolet light) is reduced, and stability and reliability of the wavelength-converted light output are enhanced, thereby providing a wavelength conversion optical device which can output a wavelength-converted light capable of improving the image quality of the displayed image.
    • 波长转换光学装置具备输出包括彼此垂直的P偏振光和S偏振光的基波(L 11)的基波光源(301),以及两个波长转换机构(303a ,303b)各自具有对基波(L 11)进行波长转换以产生谐波的偏振反转形成部,并且第一级波长转换机构(303a)进行基波的P偏振光的波长转换 波长(L 11),而第二级波长转换机构(303b)进行基波的S偏振光(L11)的波长转换,由此由于三次谐波而产生的二次谐波(绿光)的吸收 波长(紫外线)降低,波长转换光输出的稳定性和可靠性提高,从而提供可以超出波长的波长转换光学装置 使用能够改善所显示图像的图像质量的波长转换光。
    • 8. 发明申请
    • LASER EMISSION DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME
    • 激光发射装置和使用其的图像显示装置
    • US20100033508A1
    • 2010-02-11
    • US12443258
    • 2007-09-28
    • Tetsuro MizushimaAkihiro MorikawaKazuhisa YamamotoKenichi KasazumiHiroyuki FuruyaShinichi Kadowaki
    • Tetsuro MizushimaAkihiro MorikawaKazuhisa YamamotoKenichi KasazumiHiroyuki FuruyaShinichi Kadowaki
    • G09G5/10H01S5/062H01S3/00
    • H01S5/4025G09G3/3406G09G3/3413G09G2320/043G09G2320/0693G09G2330/021G09G2330/08G09G2360/145H01S5/0683H01S5/4012H01S5/4087H04N9/3161H04N9/3164
    • A laser emission device which can emit a high-luminance and high-monochromaticity light with a high efficiency, a low power consumption, and a long lifetime, and a image display device using the laser emission device are provided.A laser emission device comprises a plurality of laser elements (21), a plurality of laser driving power supplies (22) which supply currents into the plural laser elements (21), optical elements (35) which uniformize the laser light amount distributions of laser lights emitted from the laser elements (21), plural light-receiving elements (26) which receive parts (25) of the laser lights (23) outputted from the laser elements (21), a measurement unit (27) which measures at least the relations between the operation current values of the laser elements (21) and the output power values of the laser lights with respect to the operation current values, and a control unit (28) which operates the entirety of the device based on the measured values obtained by the measurement unit (27), and the control unit (28) operates the laser driving power supplies (22) according to the operation current values and the output power values so as to make the light output powers of the laser elements (21) different from each other.
    • 提供了能够以高效率,低功耗和长寿命发射高亮度和高单色度光的激光发射装置和使用该激光发射装置的图像显示装置。 激光发射装置包括多个激光元件(21),向多个激光元件(21)供给电流的多个激光驱动电源(22),使激光的激光量分布均匀化的光学元件(35) 从激光元件(21)发射的光,接收从激光元件(21)输出的激光(23)的部分(25)的多个光接收元件(26),至少测量的测量单元 激光元件(21)的工作电流值与激光的输出功率值之间的关系相对于操作电流值的关系,以及基于测量值操作整个装置的控制单元(28) 由所述测量单元(27)获得,并且所述控制单元(28)根据所述操作电流值和所述输出功率值对所述激光驱动电源(22)进行操作,以使得所述激光元件(21)的光输出功率 )dif 彼此相差