| 摘要 |
PROBLEM TO BE SOLVED: To provide a television lens device having a correction lens system that corrects the magnification so that in the case a vibration isolating unit having an enlargement rate is installed, the focal image size is equivalent to that in the case the vibration isolating unit is not installed. SOLUTION: A conversion lens 64 for correcting the magnification that cancels values enlarged by the vibration isolating unit 10, is installed on a turret 60 of an extender mechanism 36 including a lens device 14. For example, in the case the vibration isolating unit 10 has the enlargement rate of 1.25 times, the conversion lens 64 having the rate of 1.6 times and a conversion lens having the rate of 0.8 times are installed on the turret 60. A discrimination device 76 for the vibration isolating unit automatically determines whether the vibration isolating unit 10 is installed or not. In the case that the vibration isolating unit 10 is installed, and an extender switching signal representing the value of 2 times is output from an extender switching signal generating means 94, the conversion lens 64 having the rate of 1.6 times is automatically put on an imaging optical axis L. |
