发明名称 LIGHT SOURCE DEVICE FOR ENDOSCOPE
摘要 PURPOSE:To supply enough light quantity even at the time of outputting surface- sequential light by increasing the light quantity of a light source during the exposing period by a surface-sequential light type image-pickup means when the surface-sequential light is outputted. CONSTITUTION:When the surface-sequential light is selected by a scope type selecting means 49, a timing signal from a timing signal generating means 47 is inputted to a lighting device 40, which increases a current for supplying to a lamp 41, for example to 25A during the opening period of a color conversion filter 43, and reduces the current, for example to 10A during a light- shielding period in response to the timing signal. Therefore, the outgoing light quantity of the lamp 41 is increased during the color conversion filter 43 opening period, and reduced during the light-shielding period. Thus, enough quantity of light can be supplied even when the surface-sequential light is outputted.
申请公布号 JPH0220816(A) 申请公布日期 1990.01.24
申请号 JP19890057262 申请日期 1989.03.08
申请人 OLYMPUS OPTICAL CO LTD 发明人 NOGUCHI TOSHIAKI
分类号 G02B23/24;A61B1/04;G02B23/26;H04N5/225;H04N5/235 主分类号 G02B23/24
代理机构 代理人
主权项
地址