Patent ID: 8858101
Filing Date: 2014-10-14
Classification: G02B,G03B

Abstract:
1. An image pickup apparatus comprising: a first bayonet coupling section which is formed around a lens barrel; a first member configured to have a second bayonet coupling section formed thereon, said second bayonet coupling section being capable of being engaged with said first bayonet coupling section; a rotational operation member configured to rotate with respect to said first member; a second member configured to rotate in unison with said rotational operation member in a case when said rotational operation member is rotated; a detection unit configured to detect rotation of said second member; a first lock member configured to restrict rotation of said first member with respect to said first bayonet coupling section in a case when said first bayonet coupling section and said second bayonet coupling section are engaged with each other; and a second lock member configured to restrict rotation of said rotational operation member and said second member with respect to said first member in accordance with an operation for releasing rotation restriction of said first member.