Patent attributes
Disclosed is a slit lamp microscope capable of forming a slit superior in terms of parallelism. The slit lamp microscope includes casings (100L and 100R) to the bottoms surfaces of which slit blades (107L) and (107R) are fixed and which are connected together so as to be rotatable around shaft members (102), and an inter-casing distance varying member (87) adapted to change the distance between the casings (100L and 100R) in correspondence with vertical movement of an ascent/descent shaft (86). Coil-like portions of torsion springs (103) are wound around the shaft members (102) to which the casings (100L and 100R) are connected. The torsion springs (103) urge the casings (100L and 100R) so as to bring the slit blades (107L and 107R) close to each other. Further, the casings (100L and 100R) are equipped with U-shaped springs (106) urging protrusions (100L′ and 100R′) thereof so as to press them against the shaft members (102).
