# US 5,335,032 A · Image stabilizing apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,335,032 A - Document ID: US5335032A - Status: Granted - Kind: A - Application number: 07/872,886 - Filed: 1992-04-23 - Granted: 1994-08-02 - Earliest claimed: 1991-04-26 - Assignees: Canon Kabushiki Kaisha - Inventors: Ichiro Onuki; Masao Shikaumi - Web page: https://patentgrep.com/patent/US5335032A ## CPC - G02B 7/28: Systems for automatic generation of focusing signals - G03B 5/00: Adjustment of optical system relative to image or object surface other than for focusing - G03B 2205/0007: Movement of one or more optical elements for control of motion blur - G03B 2205/0053: Driving means for the movement of one or more optical element - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract An image stabilizing apparatus comprises a light beam deflecting device controllable for deflecting a light beam by moving an optical member disposed in an optical path, an accelerometer for detecting an influence the optical member receives from gravity and a control device for controlling the operation of the light beam deflecting device by the use of the output of the accelerometer so as to provide image stabilization. ## Claims ### Claim 1 An image stabilizing apparatus comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detecting a direction in which gravity acts on said image stabilizing means during operation of said image stabilizing means; and (C) control means for changing a control of said image stabilizing means in response to an output of said direction of gravity detection means. ### Claim 2 (depends on 1) An apparatus according to claim 1, wherein said direction of gravity detecting means includes means for detecting a direction in which gravity acts on the basis of a state of said image stabilizing means during operation. ### Claim 3 (depends on 2) An apparatus according to claim 2, wherein said direction of gravity detection means includes means for detecting the direction of gravity in which gravity acts on the basis of a driving means position of said image stabilizing means. ### Claim 4 (depends on 3) An apparatus according to claim 3, wherein said direction of gravity detection means includes means for determining a direction of said image stabilizing means from a movable center position to said driving means position as a direction in which gravity acts. ### Claim 5 (depends on 3) An apparatus according to claim 3, wherein said direction of gravity detection means includes means for detecting the driving means position on the basis of an arrival of said image stabilizing means at a predetermined position. ### Claim 6 (depends on 3) An apparatus according to claim 3, wherein said direction of gravity detection means includes means for detecting the driving mean position on the basis of an arrival of said image stabilizing means at a position located near to an edge of a movable range. ### Claim 7 (depends on 4) An apparatus according to claim 4, wherein said direction of gravity detection means includes means for detecting a direction in which gravity acts on the basis of a record in which said image stabilizing means reaches the position located near to the edge of the movable range. ### Claim 8 (depends on 1) An apparatus according to claim 1, wherein said control means includes means for negating an influence said image stabilizing means receives from gravity in response to an output of said direction of gravity detection means. ### Claim 9 (depends on 6) An apparatus according to claim 6, wherein said control means includes means for applying a force on said image stabilizing means in a direction which is contrary to a direction of gravity detected by said direction of gravity detection means. ### Claim 10 (depends on 9) An apparatus according to claim 9, wherein said control means includes memory means for memorizing a magnitude of force applied in a direction which is contrary to a direction in which gravity acts. ### Claim 11 (depends on 6) An apparatus according to claim 6, wherein said control means includes means for substantially coinciding with the driving mean position of said image stabilizing means during operation of said image stabilizing means and a movable center position of said image stabilizing means. ### Claim 12 (depends on 1) An apparatus according to claim 1, further comprising image vibration detection means for detecting an image vibration, said image stabilizing means stabilizing an image in response to an output of said image vibration detection means. ### Claim 13 (depends on 1) An apparatus according to claim 1, wherein said image stabilizing means includes an optical member moving in the optical path in a plane which is substantially perpendicular to an optical axis. ### Claim 14 (depends on 1) An apparatus according to claim 1, wherein said image stabilizing means includes a variable angle prism. ### Claim 15 An image stabilizing apparatus comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detection a direction of gravity which acts on said image stabilizing means; (C) memory means for memorizing a magnitude of a force applied to said image stabilizing means so as to remove an influence said image stabilizing means receives from gravity; and (D) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means and to the magnitude of force memorized by said memory means. ### Claim 16 (depends on 15) An apparatus according to claim 15, wherein said direction of gravity detection means includes means for detecting a direction in which gravity acts on the basis of a state of said image stabilizing means. ### Claim 17 (depends on 16) An apparatus according to claim 16, wherein said direction of gravity detection means includes means for detecting a direction in which gravity acts in response to a displacement of said image stabilizing means. ### Claim 18 (depends on 17) An apparatus according to claim 17, wherein said direction of gravity detection means includes means for detecting a direction of gravity in which gravity acts on the basis of a driving mean position of said image stabilizing means. ### Claim 19 (depends on 18) An apparatus according to claim 18, wherein said direction of gravity detection means includes means for determining a direction of said image stabilizing means from a movable center position to said driving mean position as a direction in which gravity acts. ### Claim 20 (depends on 17) An apparatus according to claim 17, wherein said direction of gravity detection means includes means for detecting a direction in which gravity acts in response to a displacement at a starting operation of said image stabilizing means. ### Claim 21 (depends on 20) An apparatus according to claim 20, wherein said direction of gravity detection means includes means for determining a direction from a movable center position of said image stabilizing means to a position at a starting operation of said image stabilizing means as a direction in which gravity acts. ### Claim 22 (depends on 15) An apparatus according to claim 15, wherein said control means includes means for applying a force, a magnitude of which is equal to a magnitude of the force memorized in said memory means, to a direction which is contrary to a direction of gravity detected by said direction of gravity detection means. ### Claim 23 A camera comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detection a direction of gravity which acts on said image stabilizing means during operation of said image stabilizing means; and (C) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means. ### Claim 24 A camera comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detection a direction of gravity which acts on said image stabilizing means; (C) memory means for memorizing a magnitude of a force applied to said image stabilizing means so as to remove an influence said image stabilizing means receives from gravity; and (D) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means and to the magnitude of force memorized by said memory means. ### Claim 25 A camera system comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity means for detecting a direction in which gravity acts on said image stabilizing means during operation; and (C) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means. ### Claim 26 A camera system comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detecting a direction of gravity which acts on said image stabilizing means; (C) memory means for memorizing a magnitude of a force applied to said image stabilizing means so as to remove an influence said image stabilizing means receives from gravity; and (D) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means and to the magnitude of force memorized by said memory means. ### Claim 27 An optical apparatus comprising: (A) image stabilizing means controllable for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detecting a direction of gravity which acts on said image stabilizing means during operation; and (C) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means. ### Claim 28 An optical apparatus comprising: (A) image stabilizing means for stabilizing an image by moving in an optical path; (B) direction of gravity detection means for detecting a direction of gravity which acts on said image stabilizing means; (C) memory means for memorizing a magnitude of a force applied to said image stabilizing means so as to remove an influence said image stabilizing means receives from gravity; and (D) control means for controlling an action of said image stabilizing means in response to an output of said direction of gravity detection means and to the magnitude of force memorized by said memory means.