JPH0428610U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram for explaining a scanning optical system to which a position adjustment mechanism according to an embodiment of the present invention is applied, FIG. 2 is a perspective view showing main parts of the position adjustment mechanism according to an embodiment of the present invention, and FIG. The figure is a schematic plan view for explaining the action of the mechanism shown in FIG. 2, FIG. 4 is a plan view equivalent to FIG. 5 is a perspective view for explaining the main parts of a position adjustment mechanism according to another embodiment of the present invention, FIG. 6 is a cross-sectional view taken in the direction indicated by the symbol - line in FIG. 4, and FIG. 5 is a view along the arrow in the direction indicated by the symbol - line, and FIG. 8 is a view along the arrow corresponding to FIG. 7 showing a modification of the main part of the mechanism shown in FIG. 5. 3... Cylindrical lens which is one of the anamorphic optical elements, 9, 20... Cylindrical holding member, 10, 21... Support member, 13... Support substrate, 13A1, 21B... Inclined surface, 14, 22... …
Elastic body, 15... Taper member, 16, 24... Adjustment screw serving as biasing means, 21B... Convex piece.

Claims (1)

[Claims for Utility Model Registration] 1. A position adjustment mechanism for an anamorphic optical element such as a cylindrical lens, to which the anamorphic optical element is attached,
A cylindrical holding member having a cylindrical portion having a rotation center along the optical axis of the optical element is fitted with the cylindrical portion of the cylindrical holding member to rotate the cylindrical holding member around the optical axis. a support member that supports the support member movably in the optical axis direction of the anamorphic optical element; and a support member that is provided on the support substrate and corresponds to one end in the optical axis direction of the anamorphic optical element. an elastic body with one side of the elastic body facing the end face of the elastic body and the other side of the elastic body facing the support substrate; a tapered member that comes into contact with an inclined surface; and a biasing means that moves the tapered member along the inclined surface, and the tapered member moves along the inclined surface to change the position of the support member to the anamorphic A position adjustment mechanism for an anamorphic optical element, which is characterized by moving the optical element along the optical axis direction. 2 A position adjustment mechanism for an anamorphic optical element such as a cylindrical lens, to which the anamorphic optical element is attached,
A cylindrical holding member having a cylindrical portion having a rotation center along the optical axis of the optical element is fitted with the cylindrical portion of the cylindrical holding member to rotate the cylindrical holding member around the optical axis. between a supporting member that can support the cylindrical holding member, a convex piece integrated on one of the outer peripheries of the cylindrical holding member, and a position facing the protruding piece on the outer periphery of the cylindrical holding member and the supporting member. a biasing means arranged to rotationally bias the cylindrical holding member in a positional direction around the optical axis; and an inclined surface formed on the supporting member at a position facing the convex piece of the cylindrical holding member; , a rotary drive member disposed between the inclined surface and the convex piece and capable of sliding on the inclined surface by an operation from outside the supporting member; A position adjustment mechanism for an anamorphic optical element, characterized in that the cylindrical holding member is rotated around the optical axis via the convex piece.