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    • 4. 发明公开
    • Scanning confocal microscope
    • Konfokales Rastermikroskop。
    • EP0564178A1
    • 1993-10-06
    • EP93302342.6
    • 1993-03-26
    • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    • Tsien, Roger Y.
    • G02B21/00H04N1/04
    • H04N1/053G02B21/0076H04N2201/02443H04N2201/0471H04N2201/04734H04N2201/04746H04N2201/04768H04N2201/04798
    • A scanning confocal microscopes scans a sample (16) with an incident beam of ultraviolet radiation, in a raster scan pattern, causing the sample to fluoresce and emit visible radiation, a portion of which retraces a portion of the path optical of incident beam, to a dichroic mirror (8) that separates it from the incident beam for detection by a photomultiplier (22,26) tube. A clock signal for clocking the output of the photomultiplier tube is provided by a reference beam system that directs a reference beam (RB) onto the same scanning mirror (9) as is the incident beam, at a coincident location on that mirror, and from there through a Ronchi grating (44) having a uniform series of alternating transparent and opaque regions. The resulting pulsed reference beam is detected by a second photomultiplier tube (46), to produce a clock signal that is an accurate representation of the instantaneous scan rate of the reference beam and, thereby, the scanning incident beam.
    • 扫描共聚焦显微镜以光栅扫描图案用入射紫外线束照射样品(16),导致样品发出荧光并发射其可见辐射(其一部分将入射光束的光路的一部分重新回溯到入射光束的一部分) 分离镜(8),其将入射光束与光电倍增管(22,26)管分离。 用于计时光电倍增管输出的时钟信号由参考光束系统提供,该参考光束系统将参考光束(RB)引导到与入射光束相同的扫描反射镜(9)上,在该反射镜上的重合位置 通过具有均匀系列的交替透明和不透明区域的Ronchi光栅(44)。 所产生的脉冲参考光束由第二光电倍增管(46)检测,以产生时钟信号,该时钟信号是参考光束的瞬时扫描速率,从而是扫描入射光束的精确表示。