| 摘要 |
PURPOSE:To realize the adjustment for a shift of horizontal optical axes, by securing the rotation for a prism, etc. around an optical axis between the prism and a mirror. CONSTITUTION:For a shift of optical axis, the tilt of a screen, etc. of a single- lens reflex type viewfinder which are caused by a defective angle of attachment for the reflective face between a mirror 5 and a prism 3, the shift of a horizontal optical axis is adjusted without virtually causing a shift of a vertical optical axis by turning the prism 3 round a VF master optical axis B1-B2. Furthermore the mirror 5 is turned round a VF optical axis C1-C2 or the axis B1-B2 to adjust both the shift of the horizontal optical axis and the screen tilt. |
