Patent ID: 7623773
Filing Date: 2009-11-24
Classification: G03B

Abstract:
1. An accessory device detachably mounted to an accessory shoe of an image-pickup apparatus, comprising: a contact member that electrically connects with the accessory shoe; a lock mechanism that allows a lock operation for fixing the accessory device to the accessory shoe and an unlock operation for releasing the fix of the accessory device; a drip-proof member that forms a drip-proof space around the contact member and the accessory shoe when the drip-proof member contacts the image-pickup apparatus; and a moving mechanism that moves, in response to the lock operation, the drip-proof member to a first position where the drip-proof member is allowed to be brought into contact with the image-pickup apparatus, and that moves, in response to the unlock operation, the drip-proof member to a second position where the drip-proof member is retracted from the first position, wherein the accessory device is mounted to the accessory shoe in a first direction orthogonal to a second direction in which the drip-proof member moves between the first and second positions, and wherein, the drip-proof member has a front-end-side portion and a rear-end-side portion in the first direction and has a shape such that a length of the rear-end-side portion in the second direction is longer than that of the front-end-side portion to avoid at the second position an interference with the accessory shoe during mounting of the accessory device to the accessory shoe.