| 摘要 |
PURPOSE:To set a correct lamp value and a threshold value by using the threshold value corresponding to the standard lamp value on one of optical systems as the standard threshold value, and storing the deviations between the lamp values having the standard threshold values of other optical systems and the standard lamp value. CONSTITUTION:One optical system is selected, and the threshold value of the point where an image photographed by a camera is stabilized is set to the standard threshold value while the standard lamp value is kept by a controller. Differences between the lamp values corresponding to the standard threshold value and the standard lamp value are obtained on other optical systems 17a, 17b,..., and lamp value deviations DELTALa, DELTALb,... are stored in controllers 30a, 30b, When the observation object is changed, the proper threshold value is obtained in one of the optical systems 17a, 17b,... storing the lamp value deviations DELTALa, DELTALb,..., then it can be used for other optical systems. |
