| タイトル | Servo-controlled intravital microscope system |
| 本文（外部サイト） | http://hdl.handle.net/2060/19750017051 |
| 著者（英） | Chapman, C. P.; Wayland, H. J.; Mansour, M. N. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|NASA Pasadena Office |
| 発行日 | 1975-05-13 |
| 言語 | eng |
| 内容記述 | A microscope system is described for viewing an area of a living body tissue that is rapidly moving, by maintaining the same area in the field-of-view and in focus. A focus sensing portion of the system includes two video cameras at which the viewed image is projected, one camera being slightly in front of the image plane and the other slightly behind it. A focus sensing circuit for each camera differentiates certain high frequency components of the video signal and then detects them and passes them through a low pass filter, to provide dc focus signal whose magnitudes represent the degree of focus. An error signal equal to the difference between the focus signals, drives a servo that moves the microscope objective so that an in-focus view is delivered to an image viewing/recording camera. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 75N25123 |
| 権利 | No Copyright |
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