| 摘要 |
PROBLEM TO BE SOLVED: To provide a range finder in which an observer can correctly recognize a range irradiated with a laser light even when magnification of a collimation optical system is changed. SOLUTION: The size of a collimation area 22 displayed on a transmissive liquid crystal display panel 7 of the collimation optical system for collimating a target object is varied according to the magnification. A plurality of patterns of the sizes of the collimation area 22 are prepared, selected according to the magnification, and displayed on the transmissive liquid crystal display panel 7. COPYRIGHT: (C)2006,JPO&NCIPI
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