US20090208199A1 - Mirror retention structure and camera equipped therewith - Google Patents
Mirror retention structure and camera equipped therewith Download PDFInfo
- Publication number
- US20090208199A1 US20090208199A1 US12/379,200 US37920009A US2009208199A1 US 20090208199 A1 US20090208199 A1 US 20090208199A1 US 37920009 A US37920009 A US 37920009A US 2009208199 A1 US2009208199 A1 US 2009208199A1
- Authority
- US
- United States
- Prior art keywords
- mirror
- sub
- retention frame
- receiving pin
- abutting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- 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
- G03B19/00—Cameras
- G03B19/02—Still-picture cameras
- G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
Definitions
- the present invention relates to a mirror retention structure and to a camera equipped therewith.
- the first abutting portion may be formed at a surface parallel with the sub-mirror, and the second abutting portion is formed at a surface that is inclined to face an axis of rotation of the sub-mirror with respect to the main mirror retention frame.
- FIG. 1 is a sectional view showing a camera incorporating an embodiment of the mirror retention structure of the present invention
- FIG. 2 is a side view showing a mirror-down position of a mirror retention mechanism portion
- FIG. 3 is a side view showing a position prior to the mirror-down position of the mirror retention mechanism portion
- the camera 10 of the present embodiment is a digital single lens reflex camera.
- the camera 10 includes a frame main body portion 11 , an image display portion 12 , a mount portion 20 , a mirror retention mechanism portion 30 , a viewfinder portion 40 , a range sensor portion 50 , a shutter portion 60 and an imaging portion 70 .
- the mirror retention mechanism portion 30 is provided with a main mirror retention frame 2 which retains the main mirror 1 and a sub-mirror retention frame 4 which retains the sub-mirror 3 .
- the sub-mirror retention frame 4 is disposed to the rear side of the main mirror retention frame 2 along the optical axis A.
- the sub-mirror 3 is disposed at the rear side of the main mirror 1 .
- the main mirror 1 is a reflection mirror that reflects object light toward the viewfinder portion 40 .
- a semi-transmissive mirror (not shown) which transmits light is provided at a portion of the reflection surface of the main mirror 1 .
- FIG. 4A shows positions of points at which the sub-mirror retention frame 4 comes into contact with the receiving pin 6 .
- the first abutting portion 4 a touches against the receiving pin 6 at a point 41
- the second abutting portion 4 b touches against the receiving pin 6 at a point 42 .
- FIG. 4B shows points at which the receiving pin 6 comes into contact with the sub-mirror retention frame 4 .
- a point 61 touches against the first abutting portion 4 a, and a point 62 , at a location separated from the point 61 , touches against the second abutting portion 4 b.
- the receiving pin 6 touches the sub-mirror retention frame 4 at two locations, the points 61 and 62 .
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cameras In General (AREA)
Abstract
Objects of the present invention are to reduce rebounding of a sub-mirror and to prevent shifting of the mirror-down position. The present invention provides a mirror retention structure comprising, a main mirror retention frame that retains a main mirror, a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame, and a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein the sub-mirror retention frame is provided with, a first abutting portion that touches against the receiving pin at the mirror-down position; and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.
Description
- The present application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2008-035185 filed on Feb. 15, 2008. The content of the application is incorporated herein by reference in its entirety.
- 1. Field of the Invention
- The present invention relates to a mirror retention structure and to a camera equipped therewith.
- 2. Description of the Related Art
- Heretofore, there has been a mirror retention structure that is provided with: a main mirror retention frame that retains a main mirror; a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame; and an receiving pin that touches against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position. In this conventional mirror retention structure, the angle of the sub-mirror is set by a portion of the sub-mirror retention frame abutting against the receiving pin when the sub-mirror comes into the mirror-down position (see, for example, Japanese Unexamined Patent Publication No. H9-203974).
- However, in the conventional mirror retention structure, when the sub-mirror comes to the mirror-down position, the sub-mirror retention frame strikes against the receiving pin and the sub-mirror rebounds. Further, if mirror-down is performed many times, the portion of the receiving pin that abuts against the sub-mirror retention frame is worn down and the mirror-down position of the sub-mirror is shifted.
- Objects of the present invention are to reduce rebounding of a sub-mirror and to prevent shifting of the mirror-down position.
- The present invention solves the above-described problem with the following solution.
- In order to achieve the object mentioned above, according to a first aspect of the present invention, there is provided a mirror retention structure comprising, a main mirror retention frame that retains a main mirror, a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame, and a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein the sub-mirror retention frame is provided with, a first abutting portion that touches against the receiving pin at the mirror-down position, and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.
- The first abutting portion may be formed at a surface parallel with the sub-mirror, and the second abutting portion is formed at a surface that is inclined to face an axis of rotation of the sub-mirror with respect to the main mirror retention frame.
- A portion of the receiving pin that abuts against the first abutting portion may be different from a portion of the receiving pin that abuts against the second abutting portion.
- At the mirror-down position, the first abutting portion may be disposed at a photography lens side relative to a position at which the sub-mirror is retained.
- The receiving pin may be an eccentric pin.
- In order to achieve the object mentioned above, according to a second aspect of the present invention, there is provided a camera comprising the mirror retention structure according to the first aspect of the present invention.
- The constitutions described hereabove may be suitably modified, and at least portions thereof may be substituted with other constituents.
- According to the present invention, rebounding of a sub-mirror may be reduced and shifting of a mirror-down position prevented.
- In the drawings attached,
-
FIG. 1 is a sectional view showing a camera incorporating an embodiment of the mirror retention structure of the present invention; -
FIG. 2 is a side view showing a mirror-down position of a mirror retention mechanism portion; -
FIG. 3 is a side view showing a position prior to the mirror-down position of the mirror retention mechanism portion; and -
FIG. 4A andFIG. 4B are side views showing respective contact points of a sub-mirror retention frame and a receiving pin. - Herebelow, a preferred embodiment of the present invention will be described with reference to the attached drawings and suchlike.
FIG. 1 is a sectional view of acamera 10 of the present embodiment. InFIG. 1 , an xyz orthogonal coordinate system is established for ease of description and understanding. In this coordinate system, for a position of the camera when a photographer is keeping the optical axis A horizontal and photographing a landscape orientation image (hereinafter referred to as a usual photography position), a direction to leftward from the photographer's point of view is the +x direction. The direction to upward in the usual photography position is the +y position, and the direction toward the subject in the usual photography position is the +z position. - The
camera 10 of the present embodiment is a digital single lens reflex camera. Thecamera 10 includes a framemain body portion 11, animage display portion 12, amount portion 20, a mirrorretention mechanism portion 30, aviewfinder portion 40, arange sensor portion 50, ashutter portion 60 and animaging portion 70. - The frame
main body portion 11 is a main frame of thecamera 10, to which the respective portions of thecamera 10 are fixed. Theimage display portion 12 is provided at a rear portion of thecamera 10. Theimage display portion 12 is a liquid crystal display that shows subjects photographed by theimaging portion 70, and information relating to operations, photographed subjects and so forth. Themount portion 20 is a portion at which an unillustrated photography lens is removably mounted. The photography lens is a lens unit at which object light is incident. The incident object light is emitted to the mirrorretention mechanism portion 30. The photography lens is interchangeable in accordance with photography requirements. A zoom-type lens unit that magnifies and reduces subject images, a single point focus-type lens unit, or the like may be employed. - The
viewfinder portion 40 includes aviewfinder screen 41, aDach pentaprism 42 and aneyepiece portion 43. Theviewfinder screen 41 is disposed above the mirrorretention mechanism portion 30, and is a screen for inputting and focusing object light that is reflected thereat when the mirrorretention mechanism portion 30 is in a viewing state. The Dach pentaprism 42 is disposed above theviewfinder screen 41, and is a polygonal prism that emits the object light focused by theviewfinder screen 41 toward theeyepiece portion 43. Theeyepiece portion 43 is an eyepiece optical system disposed at a position on which the object light emitted from theDach pentaprism 42 is incident. - The
range sensor portion 50 is a sensor at which object light reflected by the mirrorretention mechanism portion 30 is incident. Therange sensor portion 50 is provided for adjusting the focusing point to the subject of thecamera 10. Theshutter portion 60 is provided with a plural number of unillustrated shutter blade units. Theshutter portion 60 opens and closes the shutter blade units in accordance with photography instructions from an unillustrated release switch or the like, and causes object light to be incident on theimaging portion 70. - The
imaging portion 70 is disposed at a position at which object light that has passed through theshutter portion 60 is incident. Theimaging portion 70 is provided with alow pass filter 71 and animaging device 72. Theimaging device 72 is a CCD (Charge-Coupled Device) which is disposed behind thelow pass filter 71. Theimaging device 72 is exposed to the object light that is incident thereon via thelow pass filter 71, converts the object light to electronic image signals, and outputs the image signals to an unillustrated image processing section. Theimaging device 72 is not limited to being a CCD. For example, a CMOS (Complementary Metal Oxide Semiconductor) device may be employed. - The mirror
retention mechanism portion 30 is a mechanism that includes a main mirror 1 and asub-mirror 3. The mirrorretention mechanism portion 30 is disposed at a position at which object light, which is emitted from the rear portion of the photography lens disposed at themount portion 20, is incident. The mirrorretention mechanism portion 30 causes the object light to be incident on theviewfinder portion 40, therange sensor portion 50, theshutter portion 60 and theimaging portion 70 as appropriate. - The mirror
retention mechanism portion 30 is provided with a mainmirror retention frame 2 which retains the main mirror 1 and asub-mirror retention frame 4 which retains thesub-mirror 3. Thesub-mirror retention frame 4 is disposed to the rear side of the mainmirror retention frame 2 along the optical axis A. Thus, thesub-mirror 3 is disposed at the rear side of the main mirror 1. The main mirror 1 is a reflection mirror that reflects object light toward theviewfinder portion 40. A semi-transmissive mirror (not shown) which transmits light is provided at a portion of the reflection surface of the main mirror 1. At the semi-transmissive mirror, the object light is party not reflected but transmitted to the rear of the main mirror 1, and the transmitted object light is incident on the sub-mirror 3 disposed to the rear. Thesub-mirror 3 is a reflection mirror that reflects the object light transmitted through the semi-transmissive mirror of the main mirror 1 toward therange sensor portion 50. -
FIG. 1 shows a case in which the mirrorretention mechanism portion 30 is in the mirror-down state. The main mirror 1 reflects the object light to theviewfinder portion 40, enabling viewing of the subject at theviewfinder portion 40. At this time, thesub-mirror 3 is disposed at the rear side of the main-mirror 1, spaced apart from the main mirror 1, and reflects a portion of the object light toward therange sensor portion 50. Therange sensor portion 50 adjusts the focusing point to the subject in accordance with this object light. When the unillustrated release switch is pressed or suchlike and photography is executed, the mainmirror retention frame 2 turns in the clockwise direction ofFIG. 1 and moves toward theviewfinder portion 40. At the same time, thesub-mirror retention frame 4 turns in the clockwise direction and moves so as to lie flat with the mainmirror retention frame 2. Thus, the mirrorretention mechanism portion 30 is withdrawn from the optical axis A and goes into the mirror-up state. The object light is incident on theshutter portion 60 andimaging portion 70 disposed to the rear of the mirrorretention mechanism portion 30. In this condition, photography can be executed. When photography ends, the mainmirror retention frame 2 turns in the anticlockwise direction, and thesub-mirror retention frame 4 turns in the anticlockwise direction away from the mainmirror retention frame 2. Thus, the mirrorretention mechanism portion 30 returns to the mirror-down state ofFIG. 1 . - As described above, it is necessary for the main mirror 1 and the sub-mirror 3 to turn between the mirror-up state and the mirror-down state. The main
mirror retention frame 2 is turnably mounted at amain support shaft 31, while thesub-mirror retention frame 4 is turnably mounted at asub support shaft 32. Themain support shaft 31 is mounted at the framemain body portion 11, and turnably supports an upper portion of the mainmirror retention frame 2. Thesub support shaft 32 is mounted at a central portion of the mainmirror retention frame 2, and turnably supports an upper portion of thesub-mirror retention frame 4. The turning in the clockwise direction of the mainmirror retention frame 2 is implemented by an unillustrated motor, and the turning in the clockwise direction of thesub-mirror retention frame 4 is also implemented by a motor. -
FIG. 2 shows the mirrorretention mechanism portion 30 in the mirror-down state, andFIG. 3 shows a state prior to transition into the mirror-down state. The turning in the anticlockwise direction to return from the mirror-up state to the mirror-down state is implemented by springs. Accordingly, an unillustrated return spring, constituted by a coil spring or the like, is provided at themain support shaft 31 and urges the mainmirror retention frame 2 in the anticlockwise direction. An unillustrated return spring, such as a toggle spring or the like, is provided between the mainmirror retention frame 2 and thesub-mirror retention frame 4, and urges thesub-mirror retention frame 4 in the anticlockwise direction. - At the mirror-down position, it is necessary for the main mirror 1 and the sub-mirror 3 to be stopped at predetermined angles. Accordingly, a
stopper pin 7 and a receivingpin 6 are provided at the framemain body portion 11. Thestopper pin 7 sets the angle of the mainmirror retention frame 2 at the mirror-down position, and thus sets the angle of the main mirror 1, by the mainmirror retention frame 2 abutting against thestopper pin 7. The receivingpin 6 sets the angle of thesub-mirror retention frame 4 at the mirror-down position, and thus sets the angle of the sub-mirror 3, by thesub-mirror retention frame 4 abutting against the receivingpin 6. - As shown in
FIG. 2 andFIG. 3 , a firstabutting portion 4 a and a secondabutting portion 4 b are formed at thesub-mirror retention frame 4. The firstabutting portion 4 a is a surface that touches against the receivingpin 6 at the mirror-down position. The secondabutting portion 4 b is a surface that touches against the receivingpin 6 prior to transition into the mirror-down position. The abuttingportions recess portion 33 being formed at a rear face of thesub-mirror retention frame 4 and a flat surface being provided at a bottom face of therecess portion 33. Therecess portion 33 is a hollow that opens to the receivingpin 6 side. When thesub-mirror retention frame 4 turns in the clockwise direction, the receivingpin 6 can relatively approach thesub-mirror retention frame 4 through the opening portion of therecess portion 33. - The first
abutting portion 4 a is formed on a surface parallel with thesub-mirror 3. The firstabutting portion 4 a is disposed at the photography lens side (themount portion 20 side) relative to the position (not shown) at which thesub-mirror 3 is retained by thesub-mirror retention frame 4. The secondabutting portion 4 b is formed integrally with the first abuttingportion 4 a, on a surface that is inclined, relative to thesub-mirror 3, to a direction toward the center of rotation of the sub-mirror 3 (i.e., the sub support shaft 32). - Next, operation of the mirror
retention mechanism portion 30 of the embodiment of the present invention is described. During the transition to the mirror-down state, the mainmirror retention frame 2 is turned in the anticlockwise direction by the return spring thereof, and thesub-mirror retention frame 4 is turned in the anticlockwise direction by the return spring thereof. In accordance with the turning of thesub-mirror retention frame 4, the receivingpin 6 abuts against the secondabutting portion 4 b as shown inFIG. 3 . As the mainmirror retention frame 2 turns further in the anticlockwise direction, the receivingpin 6 slides along the inclined face of the secondabutting portion 4 b. Then, when the mainmirror retention frame 2 abuts against thestopper pin 7, the receivingpin 6 abuts against the first abuttingportion 4 a, and the turning of the mainmirror retention frame 2 and thesub-mirror retention frame 4 stops. The angle of the main mirror 1 retained by the mainmirror retention frame 2 and the angle of the sub-mirror 3 retained by thesub-mirror retention frame 4 are set by this abutting. - Thus, according to the present embodiment, the following effects are provided.
- (1) The first
abutting portion 4 a and secondabutting portion 4 b formed at thesub-mirror retention frame 4 are planar structures rather than three-dimensional structures. Therefore, the structure is simple, fabrication is easy, accurate formation is possible, and formation in a small amount of space is possible. - (2) The
sub-mirror retention frame 4 is stopped by the secondabutting portion 4 b abutting against the receivingpin 6 and then the first abuttingportion 4 a abutting against the receivingpin 6. With these two stages of abutting, an impact caused by the abutting against the receivingpin 6 can be reduced, and durability is improved. - (3) Because the second
abutting portion 4 b of thesub-mirror retention frame 4 is an inclined surface, a rebounding force when the secondabutting portion 4 b abuts against the receivingpin 6 is reduced. Therefore, an amount of rebound of thesub-mirror retention frame 4 can be reduced. - (4)
FIG. 4A shows positions of points at which thesub-mirror retention frame 4 comes into contact with the receivingpin 6. The firstabutting portion 4 a touches against the receivingpin 6 at apoint 41, and the secondabutting portion 4 b touches against the receivingpin 6 at apoint 42.FIG. 4B shows points at which the receivingpin 6 comes into contact with thesub-mirror retention frame 4. Apoint 61 touches against the first abuttingportion 4 a, and apoint 62, at a location separated from thepoint 61, touches against the secondabutting portion 4 b. Thus, the receivingpin 6 touches thesub-mirror retention frame 4 at two locations, thepoints abutting portion 4 b first touches against the receivingpin 6. Thereafter, at the mirror-down position, the first abuttingportion 4 a touches against the receivingpin 6 and thesub-mirror retention frame 4 is stopped. Therefore, an impact between thepoint 41 and thepoint 61 is small, and amounts of wear are small. As a result, even with a large number of photography cycles, variation in the angle of thesub-mirror retention frame 4, and thus of the sub-mirror 3, can be kept small. - (5) Because the first abutting
portion 4 a which sets the mirror-down position of thesub-mirror 3 is a surface that is parallel with thesub-mirror 3, it is easy to adjust the stopping angle of thesub-mirror 3. - (6) Because the first abutting
portion 4 a is disposed at the photography lens side relative to the retention position of the sub-mirror 3, other members may be disposed with room to spare. That is, because the first abuttingportion 4 a is disposed at the photography lens side, space can be assured even with a constitution in which the gap between the mirrorretention mechanism portion 30 and theimaging portion 70 is reduced by provision for dust reduction and the like. - The present invention may be modified and altered in various ways as follows without being limited to the above-described embodiments and such modifications and alterations are also within the technical scope of the present invention.
- (1) The receiving
pin 6 may be an eccentric pin. If the receivingpin 6 is an eccentric pin, it may be turned and the position thereof finely adjusted. Thus, the position of the sub-mirror 3 may be adjusted for individual cameras. - (2) The receiving
pin 6 may be formed as a pin with some degree of thickness. If the receivingpin 6 is a thick pin, strength with respect to the abutting of thesub-mirror retention frame 4 may be increased. Moreover, the receivingpin 6 may abut with the first abuttingportion 4 a and the secondabutting portion 4 b in states close to surface contact. Consequently, impacts may be more greatly absorbed. - The embodiment and modified forms may be suitably combined and used, but detailed descriptions are not given herein. The present invention is not to be limited by the embodiments described hereabove.
Claims (6)
1. A mirror retention structure comprising:
a main mirror retention frame that retains a main mirror;
a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame; and
a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein
the sub-mirror retention frame is provided with: a first abutting portion that touches against the receiving pin at the mirror-down position; and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.
2. The mirror retention structure according to claim 1 , wherein
the first abutting portion is formed at a surface parallel with the sub-mirror, and the second abutting portion is formed at a surface that is inclined to face an axis of rotation of the sub-mirror with respect to the main mirror retention frame.
3. The mirror retention structure according to claim 1 , wherein
a portion of the receiving pin that abuts against the first abutting portion is different from a portion of the receiving pin that abuts against the second abutting portion.
4. The mirror retention structure according to claim 1 , wherein,
at the mirror-down position, the first abutting portion is disposed at a photography lens side relative to a position at which the sub-mirror is retained.
5. The mirror retention structure according claim 1 , wherein
the receiving pin is an eccentric pin.
6. A camera comprising the mirror retention structure according to claim 1 .
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/929,762 US20110135294A1 (en) | 2008-02-15 | 2011-02-14 | Mirror retention structure and camera equipped therewith |
US13/477,702 US8491202B2 (en) | 2008-02-15 | 2012-05-22 | Mirror retention structure and camera equipped therewith |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-035185 | 2008-02-15 | ||
JP2008035185A JP5326295B2 (en) | 2008-02-15 | 2008-02-15 | Mirror holding structure and camera |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/929,762 Continuation US20110135294A1 (en) | 2008-02-15 | 2011-02-14 | Mirror retention structure and camera equipped therewith |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090208199A1 true US20090208199A1 (en) | 2009-08-20 |
Family
ID=40955226
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/379,200 Abandoned US20090208199A1 (en) | 2008-02-15 | 2009-02-13 | Mirror retention structure and camera equipped therewith |
US12/929,762 Abandoned US20110135294A1 (en) | 2008-02-15 | 2011-02-14 | Mirror retention structure and camera equipped therewith |
US13/477,702 Active US8491202B2 (en) | 2008-02-15 | 2012-05-22 | Mirror retention structure and camera equipped therewith |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/929,762 Abandoned US20110135294A1 (en) | 2008-02-15 | 2011-02-14 | Mirror retention structure and camera equipped therewith |
US13/477,702 Active US8491202B2 (en) | 2008-02-15 | 2012-05-22 | Mirror retention structure and camera equipped therewith |
Country Status (2)
Country | Link |
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US (3) | US20090208199A1 (en) |
JP (1) | JP5326295B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015014725A (en) * | 2013-07-05 | 2015-01-22 | リコーイメージング株式会社 | Movable mirror drive device of camera |
JP2020154145A (en) * | 2019-03-20 | 2020-09-24 | 株式会社リコー | Mechanism for driving mirror in imaging apparatus and method for controlling drive of mirror in imaging apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5818486B2 (en) * | 2011-04-08 | 2015-11-18 | キヤノン株式会社 | camera |
JP6728923B2 (en) * | 2016-04-15 | 2020-07-22 | リコーイメージング株式会社 | Movable mirror shock absorbing mechanism and image pickup apparatus including the same |
Citations (2)
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US6003999A (en) * | 1996-04-04 | 1999-12-21 | Nikon Corporation | Mirror recoil preventing device |
US7674051B2 (en) * | 2005-10-20 | 2010-03-09 | Olympus Imaging Corp. | Mirror angle adjustment mechanism |
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JPS57111523A (en) | 1980-12-27 | 1982-07-12 | Minolta Camera Co Ltd | Mirror mechanism of single-lens reflex camera |
US4673278A (en) * | 1984-07-06 | 1987-06-16 | Canon Kabushiki Kaisha | Mirror device for a camera |
JPH09203974A (en) | 1996-01-26 | 1997-08-05 | Nikon Corp | Mirror box for single lens reflex camera |
JP3900551B2 (en) | 1996-04-04 | 2007-04-04 | 株式会社ニコン | Mirrorbound prevention device |
JP3715860B2 (en) * | 2000-03-17 | 2005-11-16 | 株式会社パイオラックス | Lid opening / closing operation device |
JP2004157212A (en) * | 2002-11-05 | 2004-06-03 | Pentax Corp | Af module mounting device for single lens reflex camera |
JP2004240281A (en) * | 2003-02-07 | 2004-08-26 | Nikon Corp | Mirror supporting mechanism |
JP2005345611A (en) * | 2004-06-01 | 2005-12-15 | Nikon Corp | Mirror shaft adjusting mechanism for quick return mirror |
-
2008
- 2008-02-15 JP JP2008035185A patent/JP5326295B2/en not_active Expired - Fee Related
-
2009
- 2009-02-13 US US12/379,200 patent/US20090208199A1/en not_active Abandoned
-
2011
- 2011-02-14 US US12/929,762 patent/US20110135294A1/en not_active Abandoned
-
2012
- 2012-05-22 US US13/477,702 patent/US8491202B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US6003999A (en) * | 1996-04-04 | 1999-12-21 | Nikon Corporation | Mirror recoil preventing device |
US7674051B2 (en) * | 2005-10-20 | 2010-03-09 | Olympus Imaging Corp. | Mirror angle adjustment mechanism |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015014725A (en) * | 2013-07-05 | 2015-01-22 | リコーイメージング株式会社 | Movable mirror drive device of camera |
JP2020154145A (en) * | 2019-03-20 | 2020-09-24 | 株式会社リコー | Mechanism for driving mirror in imaging apparatus and method for controlling drive of mirror in imaging apparatus |
US11327272B2 (en) * | 2019-03-20 | 2022-05-10 | Ricoh Company, Ltd. | Mirror driving device of imaging apparatus and method for controlling driving of mirror of imaging apparatus |
JP7293768B2 (en) | 2019-03-20 | 2023-06-20 | 株式会社リコー | Mirror driving mechanism of imaging device |
Also Published As
Publication number | Publication date |
---|---|
US8491202B2 (en) | 2013-07-23 |
US20120230667A1 (en) | 2012-09-13 |
JP2009192948A (en) | 2009-08-27 |
JP5326295B2 (en) | 2013-10-30 |
US20110135294A1 (en) | 2011-06-09 |
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AS | Assignment |
Owner name: NIKON CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHIJIIWA, TOMOKI;REEL/FRAME:022310/0114 Effective date: 20090122 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |