Shock-absorbing mechanism for movable mirror of camera
AssigneePentax Ricoh Imaging Company, Ltd.
InventorToshiaki Yamada
Life of this patent
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Abstract
A movable mirror shock-absorbing mechanism of a camera includes a movable mirror which is rotatable between a viewfinder light-guiding position and a retracted position, a pressing portion which moves with the rotation of the movable mirror, a first shock-absorbing member which is pressed and moved by the pressing portion to absorb shock of the movable mirror when the movable mirror rotates from the retracted position to the viewfinder light-guiding position, and a second shock-absorbing member which is pressed and moved by the pressing portion to absorb shock of the movable mirror when the movable mirror rotates from the viewfinder light-guiding position to the retracted position. The first and second shock-absorbing members are mutually identical in specifications.
Claims10
A movable mirror shock-absorbing mechanism of a camera, comprising:
- a movable mirror which is supported to be rotatable between a viewfinder light-guiding position, in which said movable mirror is positioned in a photographing optical path to reflect incident light emanated from an object toward a viewfinder optical system of said camera, and a retracted position, in which said movable mirror is retracted from said photographing optical path to allow the object-emanated light to travel toward a photographic light-receiving medium;
- a mirror follower which includes a first press-receiving portion and a second press-receiving portion that are pressed by said movable mirror when said movable mirror rotates toward said viewfinder light-guiding position and said retracted position, respectively, which moves with the rotation of said movable mirror by either of said first press-receiving portion and said second press-receiving portion being pressed by said movable mirror, and which includes space for idle rotation of said movable mirror that is formed between said first press-receiving portion and said second press-receiving portion to allow said movable mirror to rotate without making said movable mirror contact either of said first press-receiving portion and said second press-receiving portion;
- and
- a shock-absorbing member which absorbs shock of said movable mirror by being pressed by said mirror follower moving with rotation of said movable mirror,
- wherein, when said movable mirror rotates from one of said retracted position and said viewfinder light-guiding position toward the other of said retracted position and said viewfinder light-guiding position, said movable mirror rotates without pressing said mirror follower during an initial rotation of said movable mirror, due to said space for idle rotation of said movable mirror, and subsequently rotates while pressing said mirror follower.
Dependencies are inferred from the claim text.