| 摘要 |
PCT No. PCT/JP93/00803 Sec. 371 Date Feb. 13, 1995 Sec. 102(e) Date Feb. 13, 1995 PCT Filed Jun. 15, 1993 PCT Pub. No. WO94/28815 PCT Pub. Date Dec. 22, 1994Disclosed is a stand for optical devices, wherein both the vertical length of a second parallel link 3 and the lateral length of weight-retaining arm 19 are retractable, whereby a counterweight W4 is moveable along a straight line X connecting the extremity of a supporting arm 9 and a rotational fulcrum S. Moving the counterweight W4 along the straight line X provides an easy and secured balance adjustment of the weight of operating microscope, etc. W1-3 both in horizontal and vertical directions.
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