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    • 36. 发明授权
    • Endoscope automatic light control apparatus and endoscope apparatus
making use of the same
    • 内窥镜自动照明控制装置及使用其的内窥镜装置
    • US4967269A
    • 1990-10-30
    • US343718
    • 1989-04-27
    • Katsuyoshi SasagawaMasao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoMasahiko SasakiTakehiro NakagawaJun HasegawaShinji Yamashita
    • Katsuyoshi SasagawaMasao UeharaAkinobu UchikuboKatsuyuki SaitoMasahide KannoMasahiko SasakiTakehiro NakagawaJun HasegawaShinji Yamashita
    • G02B23/24A61B1/04A61B1/06G02B23/26H04N5/225H04N5/235
    • A61B1/042H04N5/2352H04N5/2354H04N2005/2255
    • An endoscope automatic light control apparatus comprises an automatic light control apparatus for controlling the quantity of light incident to an imaging apparatus for imaging an endoscopic image so as to maintain a signal from the imaging apparatus substantially at a constant level. An automatic gaim control apparatus inputs a signal from the imaging apparatus and controls its output level so as to maintain the signal substantially at a constant level. The automatic light control apparatus and the automatic gain control apparatus respectively having a plurality of brightness information generating apparatuses generating brightness information based on the signal from the imaging apparatus. The plurality of brightness information generating apparatuses are different from each other in a method of generating brightness information and one of the plurality of brightness information generating apparatuses able to be selected. A selecting apparatus selects the brightness generating apparatus of the same method as the automatic light control apparatus and as the automatic gain control apparatus. The automatic light control apparatus controls the quantity of light based on the brightness information and the automatic gain control apparatus controls its output level based on the brightness information. The endoscope apparatus further comprises an endoscope unit having an insert section with an observation window and an image forming optical system, an imaging apparatus, a signal processing apparatus and an illuminating system.
    • 一种内窥镜自动照明光控制装置,包括:自动光控制装置,用于控制入射到成像装置的光量,用于对内窥镜图像进行成像,以便将来自成像装置的信号基本保持在恒定水平。 自动发射控制装置输入来自成像装置的信号并控制其输出电平,以便将信号保持在恒定水平。 所述自动光控制装置和所述自动增益控制装置分别具有基于来自所述摄像装置的信号生成亮度信息的多个亮度信息生成装置。 多个亮度信息生成装置在生成亮度信息的方法和能够选择的多个亮度信息生成装置中的一个之间彼此不同。 选择装置选择与自动光控制装置和自动增益控制装置相同的方法的亮度生成装置。 自动光控制装置基于亮度信息来控制光量,并且自动增益控制装置基于亮度信息来控制其输出电平。 所述内窥镜装置还具备:内窥镜单元,具有具有观察窗的插入部和图像形成用光学系统,成像装置,信号处理装置以及照明系统。