Patent ID: 7312923

Claim:
An optical apparatus having an image pickup function, comprising: a binocular optical system that has a left and right pair of observation optical systems housed respectively in left and right lens-barrels, and is able to perform an interpupillary adjustment by axially rotating said left and right lens-barrels; an imaging unit that has a photoelectric conversion unit having an angle of view corresponding to a real visual field of an image observed by said binocular optical system, with the imaging unit being arranged between said left and right lens-barrels; and a visual field frame that has almost the same shape as said photoelectric conversion unit, is provided in at least one of said lens-barrels to be rotatable about an optical axis of the observation optical system; wherein: said optical apparatus further comprises: an interlocking portion provided between said lens-barrel having the visual field frame and said imaging unit, with said interlocking portion rotate said visual field frame and said imaging unit in the same direction through the same angle.