JP2005292562A - camera - Google Patents

Abstract

It is an object of the present invention to provide a small camera capable of efficiently arranging a finder optical system and an optical system for automatic focus detection without increasing the height and easily changing the direction of looking into the finder. .
A light beam from a photographic lens 11 is reflected by a quick return mirror 31 in a lateral direction of the body unit 30, and except for a part thereof, a half mirror 71 and a screen 72 pass through a second mirror 73 and the body unit 30. Reflected upward. The light beam reflected by the second mirror 73 is reflected by the third mirror 74 in the opposite direction to the light beam reflected by the quick return mirror 31, and further reflected by the fourth mirror toward the eyepiece side behind the body unit 30. The fourth mirror 75 and the eyepiece are integrally formed as an angle finder 80 and can be rotated around the optical axis of the light beam reflected by the third mirror 74.
[Selection] Figure 2

Description

  The present invention relates to a camera having an image sensor, and more particularly to a TTL finder mechanism and an automatic focus detection mechanism in a camera system.

  Conventionally, as a technique related to a TTL type finder and automatic focus detection, a single-lens reflex (hereinafter, simply referred to as a single-lens reflex) type using dahab rhythm is generally used. This single-lens reflex camera includes a quick return mirror that is rotationally driven up and down, a screen that is disposed above the quick return mirror, a dahab rhythm that is disposed above the screen, and an eyepiece that is disposed behind the dahab rhythm. It is composed of

  Further, in this type, the optical path is bent downward by a sub mirror disposed behind the quick return mirror, and an automatic focus detection mechanism is disposed below the space where the quick return mirror is disposed. Specifically, for example, it is configured as shown in Patent Document 1 below.

  Furthermore, the finder is fixed at the eye level, and when looking through the finder from different directions, a technique in which another angle finder is attached to the camera has been known (for example, see Patent Document 2).

In addition, digital cameras and video movies have a configuration in which a monitor that displays an electronic image can be moved to check a captured image from various directions.
JP-A-6-313844 Japanese Patent Laid-Open No. 2001-2222044

  However, with such a configuration, the dahab rhythm is arranged at the upper part of the camera, and the automatic focus detection mechanism is located below the space where the quick return mirror is arranged, so that the height of the camera becomes high. As a result, the camera was large.

  In addition, when trying to shoot a subject such as a flower near the ground from the side, it was extremely difficult for the photographer to look into the viewfinder, and there was the trouble of mounting an angle finder separate from the camera on the camera. . Furthermore, confirmation of a captured image using a monitor has a problem of requiring a large amount of power to operate the monitor and shortening the battery life of the camera.

  Therefore, the present invention has been made in view of the above circumstances, and the spatial arrangement of the finder optical system and the optical system for automatic focus detection can be efficiently arranged without increasing the height, and the direction of looking through the finder can be simplified. It is an object to provide a camera that can be changed.

  That is, the invention according to claim 1 is arranged between a photoelectric conversion element that converts an optical image incident through an imaging optical system into an electrical signal, the photoelectric conversion element and the imaging optical system, and the imaging A first reflective optical element that is bent substantially at right angles to the optical axis of the optical system and horizontally; and an optical axis that is bent by the first reflective optical element; A screen disposed; a second reflective optical element disposed behind the screen on the optical axis bent by the first reflective optical element; and the second reflective optical element bending the optical axis upward; A third reflective optical element that is disposed on the optical axis bent by the element and that bends the optical axis in the lateral direction; and an optical axis that is folded by the third reflective optical element, and the optical axis is Fold in a direction that is approximately perpendicular A fourth reflective optical element that bends, and an eyepiece that is disposed on the optical axis that is bent by the fourth reflective optical element and that observes an image on the screen. The eyepiece is integrally formed and can be rotated around an optical axis bent by the third reflective optical element.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first to fourth reflective optical elements are composed of a combination of a reflective mirror or a reflective prism.

  According to a third aspect of the present invention, in the first aspect of the present invention, the optical axis bending direction of the third reflective optical element is a horizontal direction away from the imaging optical system.

  According to a fourth aspect of the present invention, there is provided a photoelectric conversion element that converts an optical image incident through an imaging optical system into an electric signal, and the photoelectric conversion element and the imaging optical system. A first reflection optical element that is bent at a right angle to the optical axis of the first reflection optical element and in a horizontal direction, and is disposed on the optical axis that is bent by the first reflection optical element, and is disposed at an imaging position of the imaging optical system. A second reflection optical element disposed behind the screen on the optical axis bent by the first reflection optical element and bending the optical axis upward, and the second reflection optical element. A third reflective optical element that is disposed on the folded optical axis and bends the optical axis of the imaging optical system in the lateral direction and in a direction away from the imaging optical system, and is folded by the third reflective optical element Arranged on the optical axis A fourth reflecting optical element that bends the optical axis of the imaging optical system in a substantially orthogonal direction, and an optical axis that is bent by the fourth reflecting optical element, and observes an image on the screen. An eyepiece.

  According to a fifth aspect of the present invention, in the fourth aspect of the invention, the fourth reflective optical element and the eyepiece are integrally formed and are bent by the third reflective surface. It is characterized by being rotatable around the optical axis.

  According to a sixth aspect of the present invention, a photoelectric conversion element that converts an optical image incident through an imaging optical system into an electrical signal, and the photoelectric conversion element and the imaging optical system are disposed, and the imaging optical system A first reflecting surface that is bent at a right angle to the optical axis of the first reflecting surface and horizontally, and a screen that is disposed on the optical axis that is bent by the first reflecting surface, and that is disposed at an image forming position of the imaging optical system. A second reflecting surface that is arranged behind the screen on the optical axis bent by the first reflecting surface and that bends the optical axis upward, and an optical axis that is bent by the second reflecting surface A fourth reflecting surface disposed on the optical axis bent in the lateral direction and an optical axis bent by the third reflecting surface, and bent in a direction substantially orthogonal to the optical axis. Bent by the reflective surface and the fourth reflective surface An eyepiece disposed on the optical axis and observing the image on the screen, wherein the fourth reflecting surface and the eyepiece are integrally formed, and the third reflecting surface It is possible to rotate around the optical axis bent by.

  According to a seventh aspect of the present invention, the first reflective optical element that reflects the light beam from the imaging optical system in a predetermined direction and the reflective optical axis of the first reflective optical element are arranged, and the first A second reflecting optical element that reflects a reflected light beam from the first reflecting optical element in a predetermined direction, and a reflection optical axis of the second reflecting optical element, and is reflected from the second reflecting optical element. A third reflective optical element that reflects the light beam in a predetermined direction and a reflection optical axis of the third reflective optical element are arranged to reflect the reflected light beam from the third reflective optical element in a predetermined direction. A fourth reflection optical element; a screen on the reflection optical axis of the first reflection optical element; and disposed at an imaging position of the imaging optical system; and a reflection optical axis of the fourth reflection optical element For observing an image formed on the screen by the imaging optical system An eyepiece optical system, and the fourth reflective optical element and the eyepiece optical system are integrally formed and can be rotated around the optical axis reflected by the third reflective optical element. It is characterized by being.

  According to an eighth aspect of the present invention, an imaging optical system that forms an optical image of a subject, a photoelectric conversion element that converts the optical image into an electrical signal, and the photoelectric conversion element and the imaging optical system are disposed. A first reflective optical element that reflects the light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera, and the reflected optical axis of the first reflecting surface And a screen disposed at an imaging position of the imaging optical system and a reflection optical axis of the first reflection optical element, and a reflected light beam from the first reflection optical element is A second reflective optical element that reflects in a direction substantially orthogonal to the longitudinal direction; and a reflected optical axis from the second reflective optical element, and reflects a reflected light beam from the second reflective optical element to the camera. Reflected by the first reflective optical element in a direction along the longitudinal direction A third reflecting optical element that reflects in a direction opposite to the direction, and a reflection optical axis from the third reflecting optical element, and a reflected light beam from the third reflecting optical element is substantially orthogonal to the third reflecting optical element. A fourth reflective optical element that reflects in the direction, and an eyepiece optical system that is disposed on a reflected optical axis from the fourth reflective optical element and that observes the image on the screen. The reflective optical element 4 and the eyepiece optical system are integrally formed, and can be rotated around the optical axis reflected by the third reflective optical element.

  According to a ninth aspect of the present invention, an imaging optical system that forms an optical image of a subject, a photoelectric conversion element that converts the optical image into an electrical signal, and the photoelectric conversion element and the imaging optical system are disposed. A first reflective optical element that reflects the light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera, and the reflected optical axis of the first reflecting surface And a screen disposed at an imaging position of the imaging optical system and a reflection optical axis of the first reflection optical element, and a reflected light beam from the first reflection optical element is A second reflective optical element that reflects in a direction substantially orthogonal to the longitudinal direction; and a reflected optical axis from the second reflective optical element, and reflects a reflected light beam from the second reflective optical element to the camera. Reflected by the first reflective optical element in a direction along the longitudinal direction A third reflecting optical element that reflects in a direction opposite to the direction, and a reflection optical axis from the third reflecting optical element, and a reflected light beam from the third reflecting optical element is substantially orthogonal to the third reflecting optical element. A fourth reflective optical element that reflects in the direction, an eyepiece optical system that is disposed on the reflective optical axis from the fourth reflective optical element and that observes the image on the screen, and the fourth reflective optical An eyepiece optical system member that is integrally formed with an element and the eyepiece optical system, and that is rotatable around the optical axis reflected by the third reflective optical element. And

  The invention described in claim 10 is the invention described in claim 9, wherein the first reflective optical element is disposed between the first reflective optical element and the second reflective optical element. And at least a part of the reflected light beam is reflected in a predetermined direction, and another part of the reflected light beam from the first reflective optical element is transmitted in a direction along the reflected optical axis from the first reflective optical element. And a focus position detecting means for detecting a focus position of the imaging optical system using a reflected light beam from the optical path splitting element.

  According to an eleventh aspect of the present invention, an imaging optical system that forms an optical image of a subject, a photoelectric conversion element that converts the optical image into an electrical signal, and the photoelectric conversion element and the imaging optical system are disposed. A first reflective optical element that reflects the light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera, and the reflected optical axis of the first reflecting surface And a screen disposed at an imaging position of the imaging optical system and a reflection optical axis of the first reflection optical element, and a reflected light beam from the first reflection optical element is A second reflective optical element that reflects in a direction substantially orthogonal to the longitudinal direction; and a reflected optical axis from the second reflective optical element, and reflects a reflected light beam from the second reflective optical element to the camera. A direction along the longitudinal direction, which is reflected by the first reflective optical element. A third reflecting optical element that reflects in substantially the same direction as the direction, and a reflection optical axis from the third reflecting optical element, and the reflected light beam from the third reflecting optical element is substantially orthogonal to the third reflecting optical element. A fourth reflective optical element that reflects in the direction, and an eyepiece optical system that is disposed on a reflected optical axis from the fourth reflective optical element and that observes the image on the screen. The reflective optical element 4 and the eyepiece optical system are integrally formed, and can be rotated around the optical axis reflected by the third reflective optical element.

  According to a twelfth aspect of the present invention, in the invention of the eleventh aspect, the first reflective optical element is disposed between the first reflective optical element and the second reflective optical element. And at least a part of the reflected light beam is reflected in a predetermined direction, and another part of the reflected light beam from the first reflective optical element is transmitted in a direction along the reflected optical axis from the first reflective optical element. And a focus position detecting means for detecting a focus position of the imaging optical system using a reflected light beam from the optical path splitting element.

  According to a thirteenth aspect of the invention, in the twelfth aspect of the invention, the focal position detection means is provided below the optical path dividing element when the camera body is in a horizontal position. Features.

  According to a fourteenth aspect of the present invention, in the invention according to the twelfth aspect, the focus position detecting means is provided above the optical path dividing element when the camera body is in a lateral position. Features.

  According to the present invention, it is possible to provide a camera that can efficiently arrange a viewfinder optical system and an optical system for automatic focus detection without increasing the height and can easily change the direction of looking into the viewfinder. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a system configuration of a camera according to the first embodiment of the present invention.

  In FIG. 1, this camera system mainly includes a lens unit 10 as an interchangeable lens and a body unit 30 as a camera body. A desired lens unit 10 is disposed on the front surface of the body unit 30. It is set to be detachable.

  The lens unit 10 can be detachably mounted via a lens mount (not shown) provided on the front surface of the body unit 30. The lens unit 10 includes a photographing lens 11, a diaphragm 12, a lens driving mechanism 13, a diaphragm driving mechanism 14, and a lens control microcomputer (hereinafter abbreviated as Lμcom) 15.

  The photographing lens 11 is driven in the optical axis direction by a DC motor (not shown) existing in the lens driving mechanism 13. The diaphragm 12 is driven by a stepping motor (not shown) existing in the diaphragm driving mechanism 14. The Lμcom 15 controls driving of each part in the lens unit 10 such as the lens driving mechanism 13 and the aperture driving mechanism 14. The Lμcom 15 is electrically connected to a later-described body control microcomputer 50 via the communication connector 20 and controlled according to a command from the body control microcomputer 50.

  On the other hand, the body unit 30 is configured as follows.

  A light beam from a subject (not shown) that is incident through the photographing lens 11 and the diaphragm 12 in the lens unit 10 is reflected by the quick return mirror 31 as the first mirror, and the second mirror 73, the third mirror 74, and the fourth mirror. It reaches an eyepiece (eyepiece) 33 of the eyepiece optical system via a finder optical system including a mirror 75 and the like (see FIGS. 2 and 3, details will be described later). Further, a part of the subject light beam reflected by the quick return mirror 31 is further reflected by a half mirror 71 described later, and is guided to an AF sensor unit 35 which is a focus position detecting means for performing automatic ranging.

  Behind the quick return mirror 31 is a focal plane shutter 37 on the optical axis, an optical low-pass filter 38, and a photoelectric conversion element of an imaging optical system for photoelectrically converting a subject image that has passed through the optical system. A CCD unit 40 is provided. That is, when the quick return mirror 31 is retracted from the optical path, the light flux that has passed through the photographing lens 11 and the diaphragm 12 is imaged on the imaging surface of the CCD unit 40.

  The longitudinal direction of the CCD imaging range of the CCD unit 40 coincides with the longitudinal direction of the camera (body unit 30). However, the photographing range of the CCD may be a square. Further, the longitudinal direction of the photographing field range of the camera system is also the same as the longitudinal direction of the camera.

  The body unit 30 includes an image processing controller 46 for performing image processing. The image processing controller 46 includes a CCD interface circuit 41 connected to the CCD unit 40 and an SDRAM 42 provided as a storage area. , FlashRom 43 and recording medium 44, and a liquid crystal monitor 45 are connected. These are configured to provide an electronic recording display function together with an electronic imaging function.

  The recording medium 44 is an external recording medium such as various memory cards and an external hard disk drive (HDD) that can be attached to and detached from the body unit 30 via a camera interface (not shown).

  The image processing controller 46 includes a photometric sensor 52 through a photometric circuit 51, a mirror drive mechanism 54, an AF sensor drive circuit 55, a shutter charge mechanism 56, a shutter control circuit 57, and a nonvolatile memory (EEPROM) 58. A strobe 62 and the like via a strobe control circuit 61 are connected to a body control microcomputer (hereinafter abbreviated as Bμcom) 50 for controlling each part in the body unit 50.

  The Bμcom 50 is further connected with an operation display LCD 63 for notifying the photographer of the operation state of the camera by display output, a camera operation switch (SW) 64, and a battery 66 via a power supply circuit 65. ing.

  The Bμcom 50 and the Lμcom 15 are electrically connected via the communication connector 20 when the lens unit 10 is mounted. As a digital camera, the Lμcom 15 operates in cooperation with the Bμcom 50 in a dependent manner.

  The photometric circuit 51 is a circuit that performs photometric processing based on the electrical signal of the photometric sensor 52. The mirror driving mechanism 54 is a mechanism for driving and controlling the quick return mirror 31, and the AF sensor driving circuit 55 is a circuit for driving and controlling the AF sensor unit 35.

  The shutter charge mechanism 56 charges a spring that drives the front curtain and the rear curtain of the shutter 37. The shutter control circuit 57 controls the movement of the front and rear curtains of the shutter 37, and exchanges a signal for controlling the opening / closing operation of the shutter and a signal synchronized with the strobe with the Bμcom 50.

  The non-volatile memory 58 is a storage means for storing predetermined control parameters necessary for camera control as a storage area other than the SDRAM 42, FlashRom 43, and recording medium 44 described above, and is provided so as to be accessible from the Bμcom 50.

  The strobe 62 has a flash arc tube (not shown) and irradiates the subject with flash light. Then, in the strobe control circuit 61, charge control necessary for light emission from the flash light emission tube of the strobe 62 and light emission control of the strobe 62 are performed.

  The operation display LCD 63 is for notifying the user of the operation state of the camera by display output. The camera operation switch 64 serves as a switching means, for example, a release switch for instructing execution of a photographing operation and switching the quick return mirror 31 in and out of the photographing optical path as described later, a mode change switch for switching between a photographing mode and an image display mode, and a power The switch group includes a switch group including operation buttons necessary for operating the camera.

  Furthermore, the power supply circuit 65 is provided for converting the voltage of the battery 66 as a power supply into a voltage required for each circuit unit of the camera system and supplying it.

  Next, the finder optical system described above will be described with reference to FIGS.

  2 and 3 show the arrangement in the finder observation state in the first embodiment, in which the main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. FIG. 3 is a front view seen from the photographing lens side, and FIG. 3 is a view seen from the upper surface side of the camera body.

  In the following description, the normal use state of the camera, that is, the state of the camera when the photographer holds the camera at the time of normal photographing is set as the horizontal position, and the longitudinal direction of the body unit 30 is the longitudinal direction of the viewing range To match the horizontal direction.

  The finder optical system includes a plurality of mirrors for guiding a light beam from a subject that has passed through the photographing lens 11 in the lens unit 10 to the eyepiece 33, that is, a quick return mirror 31 as a first mirror, a second mirror 73, , A third mirror 74, a fourth mirror 75, a half mirror 71, and a screen 72.

  The light beam from the subject that has passed through the photographing lens 11 reaches a quick return mirror 31 as a first reflective optical element that can rotate in the direction of arrow A in the figure. The quick return mirror 31 is disposed between the photographing lens 11 and the CCD unit 40 and in the photographing optical path of the photographing lens 11 as shown by the solid line in FIGS. At the time of imaging, the quick return mirror 31 is moved to a position indicated by a two-dot chain line in FIG. It is led to the CCD unit 40 through 38. Reference numeral 39 denotes a sealing member for sealing between the CCD unit 40 and the optical low-pass filter 38.

  At the time of observing the subject, the subject luminous flux incident from the photographic lens 10 by the quick return mirror (first reflecting surface) 31 is at an angle of about 90 ° with respect to the optical axis of the photographic lens 10 and the length of the body unit 30 is long. Reflected in a direction along the direction. That is, it is reflected in the right direction in FIG.

  The light beam reflected by the first reflecting surface of the quick return mirror 31 that is the first reflecting optical element is on the reflected optical axis of the first reflecting surface and is inclined by a predetermined angle with respect to the reflected optical axis. It is incident on the half mirror 71 arranged. A part of the reflected light beam from the quick return mirror 31 is reflected by the half mirror 71 in a direction different from the reflected optical axis of the first reflecting surface and toward the first reflecting surface. That is, a part of the reflected light beam from the quick return mirror 31 is reflected by the half mirror 71 toward the lower left diagonal direction of the body unit 30 in FIG. On the other hand, another part of the reflected light beam from the quick return mirror 31 passes through the half mirror 71 and enters the second mirror 73 through a screen 72 described later.

  The second mirror 73 that is a second reflective optical element is on the optical axis reflected from the quick return mirror 31, and the second reflective surface that is the reflective surface reflects from the first reflective surface. The optical axis is inclined at a predetermined angle. The reflected light beam from the quick return mirror 31 incident on the second mirror 73 is at an angle of about 90 ° with respect to the optical axis reflected from the quick return mirror 31, and the reflection direction by the half mirror 71. The light is reflected toward the opposite side across the reflected optical axis from the quick return mirror 31. That is, the reflected light beam from the first reflecting surface of the click return mirror 31 is reflected by the second reflecting surface of the second mirror 73 toward the upper side of the body unit 30 in FIG.

  The light beam reflected by the second reflecting surface of the second mirror 73 is on the reflection optical axis of the second reflecting surface, and the third reflecting surface that is the reflecting surface is the second reflecting surface. Is incident on a third mirror 74 that is disposed at a predetermined angle with respect to the reflected optical axis.

  The reflected light beam from the second mirror 73 that has entered the third mirror 74, which is the third reflective optical element, is reflected by the third reflecting surface of the third mirror 74 and reflected from the second reflecting surface. Is reflected at a direction opposite to the reflection direction by the first reflecting surface of the quick return mirror 31. That is, the reflected light beam from the second reflecting surface of the second mirror 73 is reflected by the third reflecting surface of the third mirror 74 toward the left direction of the body unit 30 in FIG. In other words, the light beam reflected by the first reflecting surface of the quick return mirror 31 is guided by the second and third mirrors 73 and 74 so as to be reflected by the third reflecting surface of the third mirror 74. The optical axis is substantially parallel to the reflected optical axis of the first reflecting surface of the quick return mirror 31.

  The light beam reflected by the third reflecting surface of the third mirror 74 is on the reflection optical axis of the third reflecting surface, and the fourth reflecting surface which is the reflecting surface of the third mirror 74 is the third reflecting surface of the third mirror 74. The light enters the fourth mirror 75 that is disposed at a predetermined angle with respect to the reflected optical axis of the third reflecting surface.

  The reflected light beam from the third mirror 74 that has entered the fourth mirror 75 that is the fourth reflective optical element is reflected on the reflected optical axis from the third mirror 74 on the fourth reflecting surface of the fourth mirror 75. Reflected at an angle of approximately 90 °. That is, the reflected light beam from the third reflecting surface of the third mirror 74 is incident on the eyepiece 33 disposed on the reflected optical axis of the fourth reflecting surface. The eyepiece 33 and the fourth mirror 75 are provided in an angle finder 80 of an eyepiece optical system member configured as a unit, as will be described in detail later.

  In this way, the subject luminous flux from the photographic lens 11 is inverted and guided to the eyepiece 33 by the first to fourth reflection surfaces described above so that the image becomes an erect image. As a result, the subject image formed on the screen 72 with the eyes of the photographer can be observed through the eyepiece 33.

  In this embodiment, as shown in FIGS. 2 and 3, the quick return mirror 31, the second mirror 73, the third mirror 74, and the fourth mirror 75 are at an angle of approximately 90 ° with respect to the incident light beam. Although it arrange | positions so that it may reflect, it is not restricted to this.

  The half mirror 71 constituting the optical path splitting element is on the reflection optical axis of the first reflection surface of the quick return mirror 31 and is on the first reflection surface side of the screen 72, that is, on the quick return mirror 31 side. Placed in. The half mirror 71 has a first reflecting surface for AF, and a part of the light beam reflected without being transmitted here is guided to the AF sensor unit 35. An output from an AF sensor (not shown) in the AF sensor unit 35 is transmitted to the Bμcom 50 via the AF sensor driving circuit 55, and a known distance measurement process is performed.

  The screen 72 has a diffusing surface for diffusing the light beam incident on the finder optical system as an optical image, and has a position optically equivalent to the image pickup surface of the CCD unit 40. Is arranged. The photographer can check the photographing screen by viewing the image formed on the screen 72 from the eyepiece 33.

  Further, the light beam reflected by the second reflecting surface of the second mirror 73 described above reaches the photometric sensor 52, whereby the brightness of the subject is measured by the photometric sensor 52.

  FIG. 4 is a cross-sectional view showing the configuration of the main part of the angle finder 80 described above, in a state where the body unit 30 is viewed from the front, and the angle finder 80 itself is set to be viewed from the upper surface side of the body unit 30. It is a figure.

  The fourth mirror 75 and the eyepiece 13 are fixedly disposed on a main body 97 in an angle finder 80 configured as a unit. The angle finder 80 is configured to be able to rotate relative to the body unit 30 with the optical axis O reflected by the third mirror 74 as a rotation axis.

  A flange 81 provided on the camera body 100 constituting the body unit 30 engages with a groove 94 provided on the main body 97, and further, a fitting surface 95 of the main body 97 and a fitting surface 82 provided on the camera body 100. The main body 97 is attached to the camera body 100 so as to be rotatable around the optical axis O.

  On the other hand, a shaft 83 is provided on the opposite side of the portion where the flange 81 is provided, and a recess 96 provided corresponding to the shaft 83 is fitted, so that the main body 97 is smoothly around the optical axis O. Assists in turning. The click groove 91 provided in the radial direction with respect to the optical axis O of the main body 97 is urged by a ball 92 pushed by a spring 93 inserted into a recess on the camera body 100 side, whereby the main body 97 is Positioning in the rotational direction with respect to the camera body 100 is performed.

  A plurality of click grooves 91 are provided, and the angle positions set by the angle finder 80 are arbitrarily plural. Further, the groove 94 of the main body 97 is biased to the flange 81 by the spring 93, so that the position of the main body 97 in the optical axis direction with respect to the camera body 100 can also be set accurately.

  By configuring the angle finder 80 in this way, the angle finder 80 is approximately 90 from the rear (position shown in FIG. 3) to the upper (position shown by a two-dot chain line in FIG. 2) of the camera body 30. It can be rotated between ° and can be set at any position in between.

  Therefore, the light beam from the third mirror 74 is positioned at the fourth reflecting surface of the fourth mirror 75 upward in FIG. 3, that is, toward the rear of the body unit 30, or upward (two) in FIG. It is reflected at any position between the positions indicated by the dotted line), that is, the positions directed upward of the body unit 30. The reflected optical axis of the fourth reflecting surface can be rotated from a position substantially parallel to the optical axis of the photographing lens 11 to a position substantially perpendicular to the optical axis of the photographing lens 11, that is, approximately 90 °. It is.

  Next, the operation of each part of the camera system configured as described above will be described.

  First, the image processing controller 46 controls the CCD interface circuit 41 in accordance with an instruction from the Bμcom 50, and image data is taken in from the CCD unit 40. This image data is converted into a video signal by the image processing controller 46 and output and displayed on the liquid crystal monitor 45. The photographer can confirm the photographed image from the display image on the liquid crystal monitor 45.

  The image data is taken into the SDRAM 42 which is a temporary storage memory. The SDRAM 42 is used as a work area when image data is converted. The image data is set to be stored in the recording medium 44 after being converted into JPEG data.

  As described above, the mirror drive mechanism 54 is a mechanism for driving the quick return mirror 31 to the retracted position during imaging and the observation position during observation. When the quick return mirror 31 is at the observation position by the mirror drive mechanism 54, the light beam from the photographing lens 11 is divided and guided to the AF sensor unit 35 side and the second to fourth mirrors 73 to 75 side.

  The output from the AF sensor in the AF sensor unit 35 is transmitted to the Bμcom 50 via the AF sensor driving circuit 55, and a known distance measurement process is performed.

  Further, the photographer can view the subject from the eyepiece 33 constituting the angle finder 80. Further, a part of the imaging light flux on the screen 72 is reflected by the second mirror 73 and guided to the photometric sensor 52. A well-known photometric process is performed in the photometric circuit 52 based on the detected light amount.

  When the shutter drive control circuit 57 receives a signal for controlling the drive of the shutter from the Bμcom 50, the shutter 37 is controlled based on the signal. At the same time, the shutter drive control circuit 57 outputs a strobe tuning signal for causing the Bμcom 50 to emit a strobe at a predetermined timing. Then, the Bμcom 50 outputs a light emission command signal for causing the strobe 62 to emit light via the strobe control circuit 61 based on the strobe tuning signal.

  Next, a control operation performed by the above-described Bμcom 50 of the camera body 30 will be described with reference to a flowchart of FIG.

  FIG. 5 is a flowchart for explaining the operation of the control program operated by the Bμcom 50.

  When a power switch (not shown) in the camera operation switch 64 of the camera system is turned on, the operation by the Bμcom 50 is started. In step S1, processing for starting the camera system is executed. Here, the power supply circuit 65 is controlled so that power is supplied to each circuit unit constituting the camera system, and initial setting of each circuit is performed.

  Step S2 is a step periodically executed, and the state of the lens unit 10 is detected by performing a communication operation with the Lμcom 15. Then, in step S3, it is determined whether or not the lens unit 10 is attached to the body unit 30. If it is detected that the lens unit 10 is attached, the process proceeds to step S6. If not detected, the process proceeds to step S4.

  In step S4, it is determined whether or not the lens unit 10 has been removed from the body unit 30. Here, when it is detected that the lens unit 10 is detached from the body unit 30, the process proceeds to step S5. In step S5, after the control flag F_Lens is reset, the process proceeds to step S7. On the other hand, if it is not detected in step S4 that the lens unit 10 has been removed, step S5 is skipped and the process proceeds to step S7.

  In step S7, the control flag F_Lens is set to “1”. This control flag indicates “1” when the lens unit 10 is attached to the body unit 30 of the camera system, and indicates “0” when the lens unit 10 is removed.

  In step S6 described above, the state of the camera operation switch 64 is detected. Various modes are set according to the state of the camera operation switch 64.

  In step S8, it is determined whether or not a first release switch (not shown), which is one of the camera operation switches 64, has been operated. If the first release switch is on, the process proceeds to step S9. If the first release switch is off, the process proceeds to step S2.

  In step S <b> 9, luminance information of the subject is obtained from the photometry circuit 51. From this information, the exposure time (Tv value) of the CCD unit 40 and the aperture setting value (Av value) of the photographing lens 11 are calculated. In subsequent step S <b> 10, detection data of the AF sensor unit 35 is obtained via the AF sensor drive circuit 55. Based on this data, the amount of focus shift is calculated.

  In step S11, the state of the control flag F_Lens is determined. Here, if the control flag F_Lens is “0”, it means that the lens unit 10 does not exist. Therefore, the subsequent photographing operation from step S12 cannot be executed. Therefore, in this case, the process proceeds to step S2. On the other hand, if the control flag F_Lens is “1”, the process proceeds to step S12, and a focus shift amount is transmitted to the Lμcom 15 via the communication connector 20, and the photographing lens 11 is driven based on this shift amount. Commanded.

  In step S13, it is determined whether or not a second release switch (not shown), which is one of the camera operation switches 64, has been operated. If the second release switch is turned on, the process proceeds to step S14 and a predetermined photographing operation is performed. If it is off, the process proceeds to step S2.

  In step S14, the Av value is first transmitted to Lμcom 15, and the drive of the diaphragm 12 is commanded. Next, in step S15, the quick return mirror 31 rotates in the direction of arrow A in FIG. 3 and moves to a retracted position indicated by a two-dot chain line in FIG.

  Further, the front curtain travel of the shutter 37 is started in step S16, and the image processing controller 46 is instructed to execute an imaging operation in step S17. When the exposure to the CCD unit 40 is completed for the time indicated by the Tv value, the rear curtain travel of the shutter 37 is started in step S18.

  Next, in step S19, the quick return mirror 31 is driven to the observation position indicated by the solid line in FIG. In parallel with this, the shutter 37 is charged.

  In step S20, the Lμcom 15 is instructed to return the aperture 12 to the open position, and in step S21, the captured image data is recorded on the recording medium 44 to the image processing controller 46. Is commanded. When the recording of the image data is completed, the process proceeds to step S2 again.

  As described above, according to the first embodiment, since the rotatable angle finder is provided in the camera itself, a subject such as a flower near the ground can be viewed at a low angle without increasing the height of the camera body. You can easily look through the viewfinder when you try to shoot with the camera.

  Further, since the distance measuring light beam is guided using the entire surfaces of the quick return mirror and the half mirror, there is an advantage that it is easy to widen the visual field range in which the distance can be measured.

  Furthermore, in this embodiment, the finder optical system is configured by four mirrors, that is, a half mirror 71 and a screen 72, a quick return mirror 31, a second mirror 73, a third mirror 74, and a fourth mirror 75. It is not limited to this.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  6 and 7 show the arrangement in the second embodiment, in the finder observation state, in which main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. FIG. 7 is a front view seen from the photographic lens side, and FIG. 7 is a view seen from the upper surface side of the camera body.

  The second embodiment differs from the first embodiment described above in the viewfinder optical path.

  Hereinafter, the second embodiment will be described. The configuration other than the viewfinder optical system is the same as the configuration of the camera system of the first embodiment shown in FIG. 1, and the basic photographing operation is also described above. This is the same as the flowchart of FIG. 5 of the first embodiment. Accordingly, for these configurations and operations, the same reference numerals are given to the same parts, and illustration and description thereof are omitted.

  As shown in FIGS. 6 and 7, the light beam from the subject that has passed through the photographic lens 11 reaches a quick return mirror 31 that can rotate in the direction of the arrow A in the figure. When the subject is observed, the light beam from the subject reflected in the right direction in FIG. 6 by the first reflecting surface of the quick return mirror 31 passes through the half mirror 71 and enters the second mirror 73 through the screen 72. To do.

  The reflected light beam from the quick return mirror 31 incident on the second mirror 73 is at an angle of approximately 90 ° with respect to the reflected optical axis from the quick return mirror 31, and the reflection direction by the half mirror 71 is The light is reflected toward the opposite side across the reflected optical axis from the quick return mirror 31. That is, the reflected light beam from the first reflecting surface of the click return mirror 31 is reflected upward of the body unit 30 in FIG. 6 by the second reflecting surface of the second mirror 73.

  The light beam reflected by the second reflecting surface of the second mirror 73 enters the third mirror 74. The reflected light beam from the second mirror 73 incident on the third mirror 74 is at an angle of approximately 90 ° with respect to the reflected optical axis from the second reflection surface at the third reflection surface of the third mirror 74. Then, the light is reflected in the same direction as the reflection direction by the first reflection surface of the quick return mirror 31. That is, the reflected optical axis of the third reflecting surface of the third mirror 74 is substantially parallel to the reflected optical axis of the first reflecting surface of the quick return mirror 31. The reflected light beam from the second reflecting surface of the second mirror 73 is reflected toward the right direction of the body unit 30 in FIG. 6 by the third reflecting surface of the third mirror 74.

  The light beam reflected by the third reflecting surface of the third mirror 74 is incident on the fourth mirror 75. The reflected light beam from the third mirror 74 incident on the fourth mirror 75 is reflected at an angle of approximately 90 ° with respect to the reflected optical axis from the third mirror 74 by the fourth reflecting surface of the fourth mirror 75. Is done. That is, the reflected light beam from the third reflecting surface of the third mirror 74 is incident on the eyepiece 33 disposed on the reflecting optical axis of the fourth reflecting surface.

  As described above, the angle finder 80 having the fourth mirror 75 and the eyepiece 33 can be rotated by approximately 90 °, and can be set at any position therebetween.

  In this way, the subject luminous flux from the photographic lens 11 is inverted and guided to the eyepiece 33 by the first to fourth reflection surfaces described above so that the image becomes an erect image. As a result, the subject image formed on the screen 72 with the eyes of the photographer can be observed through the eyepiece 33.

  Then, with respect to the first embodiment described above, the optical axis bending direction of the third mirror 74 is set in a direction away from the photographing lens 11 in the horizontal direction in FIGS. 5 and 6 in the second embodiment. It is bent. The rotation mechanism of the angle finder 80 has the same configuration as that shown in FIG.

  Further, the shaft 83 and the hole recess 96 in FIG. 4 may be omitted, and in that case, it can be configured to be simpler and smaller.

(Third embodiment)
Next, a third embodiment of the present invention will be described.

  8 and 9 show the arrangement of the third embodiment in the finder observation state in which main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. FIG. 9 is a front view as seen from the photographing lens side, and FIG. 9 is a view as seen from the upper surface side of the camera body.

  In the third embodiment, the AF sensor unit 35 is arranged on the upper side of the optical axis with respect to the second embodiment shown in FIGS. 6 and 7 described above.

  The third embodiment is the same as the second embodiment described above except that the arrangement of the AF sensor unit 35 is different. Therefore, the configuration and operation of other parts are the same. The same reference numerals are assigned, and illustration and description thereof are omitted.

  8 and 9, a part of the reflected light beam from the quick return mirror 31 is in a direction different from the reflected optical axis of the first reflecting surface of the quick return mirror 71 by the half mirror 71, and Reflected toward the first reflecting surface. Here, a part of the reflected light beam from the quick return mirror 31 is reflected by the half mirror 71 toward the upper left direction of the body unit 30 and guided to the AF sensor unit 35 in FIG.

  According to the third embodiment configured as described above, it is possible to configure a small camera in which the height of the camera is further suppressed as compared with the second embodiment.

  In the first to third embodiments described above, the first to fourth mirrors are used as the reflection optical elements of the finder optical system. However, not only the configuration described above but also a reflection prism or a beam splitter, for example. Of course, these may be combined.

  Furthermore, in the above-described embodiment, the digital camera has been described as an example. However, the present invention is not limited to this, and can be applied to a single-lens reflex camera using a film.

  As mentioned above, although embodiment of this invention was described, in the range which does not deviate from the summary of this invention other than embodiment mentioned above, this invention can be variously modified.

1 is a block diagram illustrating a system configuration of a camera according to a first embodiment of the present invention. FIG. 2 is a front view seen from the photographic lens side, showing an arrangement in a finder observation state in the first embodiment in which main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. is there. FIG. 2 shows an arrangement in a finder observation state in the first embodiment in a state in which main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body, as viewed from the upper surface side of the camera body. It is. FIG. 4 is a cross-sectional view showing a configuration of a main part of the angle finder 80, in a state where the body unit 30 is viewed from the front, and the angle finder 80 itself is set in a state of being viewed from the upper surface side of the body unit 30. It is a flowchart explaining operation | movement of the control program operated by Bmicrocom50. In the second embodiment of the present invention, the finder observation state is shown in which the main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body, as viewed from the photographing lens side. It is a front view. In the second embodiment of the present invention, the finder observation state is shown in which the main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. FIG. In the third embodiment of the present invention, the finder observation state is shown in which the main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body, as viewed from the photographic lens side. It is a front view. In the third embodiment of the present invention, the finder observation state is shown in which the main components of the finder optical system and the AF sensor unit 35 are incorporated in the camera body. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Lens unit, 11 ... Shooting lens, 12 ... Diaphragm, 13 ... Lens drive mechanism, 14 ... Diaphragm drive mechanism, 15 ... Microcomputer for lens control (L [mu] com), 20 ... Communication connector, 30 ... Body unit, 31 ... Quick Return mirror 33 ... Eyepiece (eyepiece) 35 ... AF sensor unit 37 ... Shutter 38 ... Optical low pass filter 40 ... CCD unit 41 ... CCD interface circuit 45 ... Liquid crystal monitor 46 ... Image processing controller 50 DESCRIPTION OF SYMBOLS: Body control microcomputer (B [mu] com), 51 ... Photometry circuit, 52 ... Photometry sensor, 54 ... Mirror drive mechanism, 55 ... AF sensor drive circuit, 56 ... Shutter charge mechanism, 57 ... Shutter control circuit, 58 ... Nonvolatile memory (EEPROM), 62 ... Strobe, 6 3 ... LCD for operation display, 64 ... Camera operation switch (SW), 65 ... Power supply circuit, 71 ... Half mirror, 72 ... Screen, 73 ... Second mirror, 74 ... Third mirror, 75 ... Fourth mirror, 80 ... Angle finder.

Claims (14)

A photoelectric conversion element that converts an optical image incident through the imaging optical system into an electrical signal;
A first reflective optical element that is disposed between the photoelectric conversion element and the imaging optical system and bends in a horizontal direction substantially perpendicular to the optical axis of the imaging optical system;
A screen disposed on the optical axis bent by the first reflective optical element and disposed at an imaging position of the imaging optical system;
A second reflective optical element disposed behind the screen on the optical axis bent by the first reflective optical element and bending the optical axis upward;
A third reflective optical element disposed on the optical axis bent by the second reflective optical element and bending the optical axis in the lateral direction;
A fourth reflective optical element that is disposed on the optical axis bent by the third reflective optical element and that bends the optical axis in a direction substantially perpendicular to the optical axis;
An eyepiece arranged on the optical axis bent by the fourth reflective optical element and observing the image on the screen;
Comprising
The camera according to claim 4, wherein the fourth reflective optical element and the eyepiece are integrally formed and are rotatable around an optical axis bent by the third reflective optical element.   The camera according to claim 1, wherein the first to fourth reflective optical elements are configured by a combination of a reflective mirror or a reflective prism.   The camera according to claim 1, wherein an optical axis bending direction of the third reflective optical element is a horizontal direction away from the imaging optical system. A photoelectric conversion element that converts an optical image incident through the imaging optical system into an electrical signal;
A first reflective optical element that is disposed between the photoelectric conversion element and the imaging optical system and bends in a horizontal direction substantially perpendicular to the optical axis of the imaging optical system;
A screen disposed on the optical axis bent by the first reflective optical element and disposed at an imaging position of the imaging optical system;
A second reflective optical element disposed behind the screen on the optical axis bent by the first reflective optical element and bending the optical axis upward;
A third reflective optical element that is disposed on the optical axis bent by the second reflective optical element and that bends the optical axis of the imaging optical system in the lateral direction and away from the imaging optical system;
A fourth reflective optical element that is disposed on the optical axis bent by the third reflective optical element and that bends the optical axis of the imaging optical system in a substantially orthogonal direction;
An eyepiece arranged on the optical axis bent by the fourth reflective optical element and observing the image on the screen;
A camera comprising:   5. The fourth reflective optical element and the eyepiece are integrally formed, and can be rotated around an optical axis bent by the third reflective surface. Camera. A photoelectric conversion element that converts an optical image incident through the imaging optical system into an electrical signal;
A first reflective surface that is disposed between the photoelectric conversion element and the imaging optical system, and is bent at a right angle to the optical axis of the imaging optical system and in a horizontal direction;
A screen disposed on the optical axis bent by the first reflecting surface, and disposed at an imaging position of the imaging optical system;
A second reflecting surface disposed behind the screen on the optical axis bent by the first reflecting surface and bending the optical axis upward;
A third reflecting surface disposed on the optical axis bent by the second reflecting surface and bending the optical axis in a lateral direction;
A fourth reflecting surface that is disposed on the optical axis bent by the third reflecting surface and that bends the optical axis in a substantially orthogonal direction;
An eyepiece arranged on the optical axis bent by the fourth reflecting surface and observing the image on the screen;
Comprising
The camera, wherein the fourth reflecting surface and the eyepiece are integrally formed and are rotatable around an optical axis bent by the third reflecting surface. A first reflective optical element that reflects a light beam from the imaging optical system in a predetermined direction;
A second reflective optical element that is disposed on the reflective optical axis of the first reflective optical element and reflects a reflected light beam from the first reflective optical element in a predetermined direction;
A third reflective optical element that is disposed on the reflective optical axis of the second reflective optical element and reflects a reflected light beam from the second reflective optical element in a predetermined direction;
A fourth reflective optical element that is arranged on the reflection optical axis of the third reflective optical element and reflects the reflected light beam from the third reflective optical element in a predetermined direction;
A screen that is on the reflection optical axis of the first reflective optical element and is disposed at an imaging position of the imaging optical system;
An eyepiece optical system for observing an image formed on the screen by the imaging optical system, disposed on the reflection optical axis of the fourth reflective optical element;
Comprising
4. The camera according to claim 1, wherein the fourth reflective optical element and the eyepiece optical system are integrally formed and can be rotated around the optical axis reflected by the third reflective optical element. An imaging optical system that forms an optical image of the subject;
A photoelectric conversion element that converts the optical image into an electrical signal;
A first reflection that is disposed between the photoelectric conversion element and the imaging optical system and reflects a light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera. An optical element;
A screen disposed on the reflection optical axis of the first reflecting surface and disposed at an imaging position of the imaging optical system;
A second reflective optical element that reflects the reflected light beam from the first reflective optical element in a direction substantially perpendicular to the longitudinal direction of the camera on the reflection optical axis of the first reflective optical element;
It is disposed on the reflection optical axis from the second reflection optical element, and reflects the reflected light beam from the second reflection optical element in the direction along the longitudinal direction of the camera and reflected by the first reflection optical element. A third reflective optical element that reflects in a direction opposite to the direction;
A fourth reflective optical element that is arranged on the reflected optical axis from the third reflective optical element and reflects the reflected light beam from the third reflective optical element in a substantially orthogonal direction;
An eyepiece optical system disposed on the reflected optical axis from the fourth reflective optical element for observing the image on the screen;
Comprising
4. The camera according to claim 1, wherein the fourth reflective optical element and the eyepiece optical system are integrally formed and can be rotated around the optical axis reflected by the third reflective optical element. An imaging optical system that forms an optical image of the subject;
A photoelectric conversion element that converts the optical image into an electrical signal;
A first reflection that is arranged between the photoelectric conversion element and the imaging optical system and reflects a light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera. An optical element;
A screen disposed on the reflection optical axis of the first reflecting surface and disposed at an imaging position of the imaging optical system;
A second reflective optical element that reflects the reflected light beam from the first reflective optical element in a direction substantially perpendicular to the longitudinal direction of the camera on the reflection optical axis of the first reflective optical element;
Reflected by the first reflective optical element in the direction along the longitudinal direction of the camera, the reflected light beam from the second reflective optical element is disposed on the reflection optical axis from the second reflective optical element. A third reflective optical element that reflects in a direction opposite to the direction;
A fourth reflective optical element that is disposed on the reflected optical axis from the third reflective optical element and reflects the reflected light beam from the third reflective optical element in a substantially orthogonal direction;
An eyepiece optical system disposed on the reflected optical axis from the fourth reflective optical element for observing the image on the screen;
An eyepiece optical system member having the fourth reflective optical element and the eyepiece optical system and integrally formed, rotatable about the optical axis reflected by the third reflective optical element;
A camera comprising: The first reflective optical element is disposed between the first reflective optical element and the second reflective optical element, and reflects at least a part of the reflected light beam from the first reflective optical element in a predetermined direction, and the first reflective optical element An optical path splitting element that transmits another part of the reflected light beam from the reflective optical element in a direction along the reflected optical axis from the first reflective optical element;
A focal position detecting means for detecting a focal position of the imaging optical system using a reflected light beam from the optical path dividing element;
The camera according to claim 9, further comprising: An imaging optical system that forms an optical image of the subject;
A photoelectric conversion element that converts the optical image into an electrical signal;
A first reflection that is disposed between the photoelectric conversion element and the imaging optical system and reflects a light beam from the imaging optical system in a direction substantially perpendicular to the optical axis of the imaging optical system and along the longitudinal direction of the camera. An optical element;
A screen disposed on the reflection optical axis of the first reflecting surface and disposed at an imaging position of the imaging optical system;
A second reflective optical element that reflects the reflected light beam from the first reflective optical element in a direction substantially perpendicular to the longitudinal direction of the camera on the reflection optical axis of the first reflective optical element;
It is disposed on the reflection optical axis from the second reflection optical element, and reflects the reflected light beam from the second reflection optical element in the direction along the longitudinal direction of the camera and reflected by the first reflection optical element. A third reflective optical element that reflects in substantially the same direction as the direction;
A fourth reflective optical element that is arranged on the reflected optical axis from the third reflective optical element and reflects the reflected light beam from the third reflective optical element in a substantially orthogonal direction;
An eyepiece optical system disposed on the reflected optical axis from the fourth reflective optical element for observing the image on the screen;
Comprising
4. The camera according to claim 1, wherein the fourth reflective optical element and the eyepiece optical system are integrally formed and can be rotated around the optical axis reflected by the third reflective optical element. The first reflective optical element is disposed between the first reflective optical element and the second reflective optical element, and reflects at least a part of the reflected light beam from the first reflective optical element in a predetermined direction, and the first reflective optical element An optical path splitting element that transmits another part of the reflected light beam from the reflective optical element in a direction along the reflected optical axis from the first reflective optical element;
A focal position detecting means for detecting a focal position of the imaging optical system using a reflected light beam from the optical path dividing element;
The camera according to claim 11, further comprising:   13. The camera according to claim 12, wherein the focal position detection means is provided below the optical path dividing element when the camera body is in a horizontal position.   13. The camera according to claim 12, wherein the focal position detection means is provided above the optical path dividing element when the camera body is in a horizontal position.

Images