JPH08184901A - Camera with panoramic function - Google Patents

Abstract

PURPOSE: To provide a camera with a panoramic function capable of forming a light shielding frame small in size in a right-and-left direction and making the camera compact. CONSTITUTION: This camera with a panoramic function 1 is provided with two light shielding members 21 and 23 mutually moving in an opposite direction up and down by the operation of a changeover switch so as to shield and open the upper and the lower parts of an optical path between a photographing lens and film and switching a picture size from a standard mode to a panoramic mode or from the panoramic mode to the standard mode. In the camera, the respective light shielding members 21 and 23 are formed in a plate state and overlapped back and forth, one light shielding member 21 is formed of a transparent member in a size covering an optical path and higher than the height of the optical path, and the other light shielding member 23 is arranged at the upper part of the light shielding member 21, then a light shielding part 21A extending in the right-and-left direction in specified width under the light shielding member 21, and a light shielding part 23A extending in the right-and- left direction in the specified width under the other light shielding member 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a panoramic function.

[0002]

2. Description of the Related Art Generally, in a camera with a panoramic function for switching a screen size from a standard mode to a panoramic mode and from a panoramic mode to a standard mode, a light shielding frame is arranged in front of an aperture grill. As shown in FIGS. 8 and 9, the light shielding frame 51 includes two L-shaped light shielding members 53,
55 are used in combination so as to have a rectangular frame shape, and each light shielding member 53, 55 has a vertical portion 53A, 55A,
It is composed of the horizontal portions 53B and 55B, and is formed of metal or black resin that has been subjected to black surface treatment. The first
The upper portion of the lateral portion 53B of the light blocking member 53 and the second light blocking member 55.
The connecting portions 53C and 55C are respectively provided on the upper portions of the vertical portions 55A.
Is protruding.

The connecting portion 53C of the first light shielding member 53 is
It is connected to a changeover switch (not shown) for changing over from the standard mode to the panorama mode and from the panorama mode to the standard mode. Both connecting portions 53C and 55C are respectively connected to both ends of a link 57 via a pin 59, and the center portion of the link 57 is pivotally supported by a pin 61 to the camera body side. The two light shielding members 53 and 55 are connected so as to move upside down. Vertical portions 53 of the first and second light shielding members 53 and 55
Long holes 63 are formed in the upper and lower portions of A and 55A, and a pair of pins 65 and 65 projecting from the camera body side are inserted into the long holes 63.
3 and the pins 65, 65, the first and second light shielding members 53,
The vertical movement of 55 is guided.

Then, the first switch is operated by operating the changeover switch.
When the light blocking member 53 is moved upward, at the same time, the link 5
The second light blocking member 55 moves downwards via 7, and the lateral portions 53B and 55B of the first and second light blocking members 53 and 55 are respectively above and below the inner opening of the aperture grill, as shown by the solid line in FIG. Located in, the standard mode is set. Also,
When the first light blocking member 53 is moved downward by the operation of the changeover switch, at the same time, the second light blocking member 55 is moved upward via the link 57, so that the first light blocking member 53 moves to the first line as indicated by the chain double-dashed line in FIG. , Lateral portions 53B, 55 of the second light shielding members 53, 55
B is located at the upper and lower parts of the inner opening of the aperture grill, respectively, and the panorama mode is set.

According to such a light shielding frame 51, the vertical portion 53
A and 55A hold horizontal portions 53B and 55B while holding the horizontal portion 5
3B and 55B must have sufficient rigidity to move up and down,
The vertical portions 53A and 55A are required to have a predetermined horizontal width. In addition, the vertical portion 53A, without taking space on the left and right,
To guide 55A up and down, the long hole 63 and the pins 65, 6
5 is used, the vertical portions 53A and 55A are also required to have a predetermined horizontal width in order to form the elongated hole 63.
Therefore, the vertical portion 5 of the two light shielding members 53, 55
3A and 55A are formed with a predetermined left and right width.

[0006]

Therefore, the size of the conventional light-shielding frame 51 in the left-right direction becomes large, and along with this, the vertical portions 53A and 55A dedicated to the left and right outer sides of the inner opening of the aperture grill and the inner opening of the lens barrel are dedicated. It was necessary to secure a space for each, which was a factor that prevented the camera from becoming compact. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a camera with a panoramic function, which is advantageous in reducing the size of the light-shielding frame in the left-right direction and making the camera compact. Especially.

[0007]

SUMMARY OF THE INVENTION To achieve the above object, the present invention is directed to operating a panoramic mode switching switch so that the upper and lower parts of an optical path between a photographing lens and a film are shielded and opened by opening and closing a screen. In a camera with a panoramic function, the size of which is switched from a standard mode to a panorama mode and from a panorama mode to a standard mode, wherein each of the light blocking members is formed in a plate shape and is stacked in front and back to form the two light blocking members. One is formed with a size that covers the optical path with a transparent member and is larger than the vertical height of the optical path, and the other light blocking member is arranged above or below the one light blocking member, and the other light blocking member is provided. The member is provided with a light-shielding portion that extends in the left-right direction with a predetermined width, and the one light-shielding portion that is vertically opposite to the side on which the other light-shielding member is disposed. Characterized in that a light shielding portion extending in the left-right direction at a predetermined width in a portion.

Further, the present invention is characterized in that the light shielding member is arranged in the vicinity of the aperture grill. Further, the present invention is characterized in that the light shielding member is disposed between the aperture grill and the lens barrel. Further, the present invention is characterized in that the inner opening of the lens barrel is closed by the two light shielding members or one of the light shielding members. Further, the present invention is characterized in that the vertical movement of the one light shielding member is guided by guide surfaces slidably contacting both end faces of the light shielding member. Also,
The present invention is characterized in that an antireflection coating is applied to both surfaces of the one light shielding member. Further, the present invention is characterized in that the light-shielding portion is formed by applying a black paint or by attaching a light-shielding tape.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic vertical sectional view of a camera, FIG. 2 is a front view of a light shielding frame, FIG. 3 is a side view of the light shielding frame, and FIGS. 4 and 5 are front views of first and second light shielding members, respectively. In FIG. 1, 1 is a camera with a panoramic function, 3 is a lens, 5 is a lens barrel, 7 is a camera body, 9 is a back cover that is openably and closably provided on the back of the camera body, 11 is a film, and 13 is a back cover. A film pressure plate is provided, 15 is an aperture grille, 16 is a film rail provided on the back surface of the aperture grille, 17 is a changeover switch, and 19 is a light shielding frame.

A light-shielding frame 19 for switching the screen size from the standard mode to the panorama mode and from the panorama mode to the standard mode is provided between the lens barrel 5 and the aperture grill 15. The light-shielding frame 19 is composed of a first light-shielding member 21 and a second light-shielding member 23, and each of the light-shielding members 21 and 23 is formed of two square plate-shaped members which are thin and have different areas. The horizontal dimension of the first light blocking member 21 and the second light blocking member 23 is set to be slightly larger than the inner opening 15A of the aperture grill 15 and the inner opening 5A of the lens barrel 5. The size of the first light blocking member 21 in the vertical direction is larger than the inner opening 15A of the aperture grill 15 and the inner opening 5A of the lens barrel 5, and the second light blocking member 2
The vertical dimension of 3 is slightly larger than that of a light-shielding portion 23A described later. Both the first light blocking member 21 and the second light blocking member 23 are made of transparent acrylic, and both surfaces of the first light blocking member 21 are coated with antireflection coating. A light blocking portion 21A having a predetermined width is provided under each of the first light blocking member 21 and the second light blocking member 23.
23A is extended in the left-right direction. The light shielding portion 21
A, 23A, for example, by applying a black paint,
Alternatively, it is formed by attaching a light shielding tape.

The first light blocking member 21 and the second light blocking member 23 are
As shown in FIG. 1, the first light blocking member 21 is superposed in the front-rear direction of the camera 1 so that the second light blocking member 23 is positioned on the side of the aperture grill 15 and the second light blocking member 23 is positioned on the side of the lens barrel 5, and the second light blocking member 23 is arranged. Are arranged so as to be located above the first light shielding member 21. The first light blocking member 21 is arranged so that its rear surface contacts the front surface 15B of the aperture grill 15 and its front surface contacts the rear surface 5B of the lens barrel 5. The rear surface of the second light blocking member 23 is in contact with the first light blocking member 21, and the left and right end surfaces 23C and the front surface are formed on the rear surface 5B of the lens barrel 5 and are open rearwardly in the recessed portion 5.
It is arranged so as to contact the left and right end faces of C and the rear face.
By being arranged in this way, the first light blocking member 21 and the second light blocking member 21
The position of the light blocking member 23 in the front-rear direction is set, and the inner opening 5A of the lens barrel 5 is provided with the first light blocking member 21 and the second light blocking member 2.
Blocked by 3. Further, the left and right end surfaces 21C of the first light blocking member 21 and the lower left and right end surfaces 23C of the second light blocking member 23.
Up and down elongated guide members 27 having a guide surface 27A contacting with are disposed on both sides of the first light shielding member 21 and the second light shielding member 23, and these guide members 27, 27 are fixedly installed on the camera body side, The left and right positions of the first light blocking member 21 and the second light blocking member 23 are set by the members 27, 27.

The connecting portion 2 is provided on the upper left portion of the first light shielding member 21.
9 is projected upward, and a connecting portion 31 is projected upward at the upper right portion of the second light shielding member 23. As shown in FIG. 1, the upper end of the connecting portion 31 of the second light shielding member 23 is connected to the changeover switch 17 for changing the panorama mode via the connecting rod 33. The first and second connecting portions 29 and 31 are connected to both ends of the link 35 by a pin 37 and a long hole 38, respectively, and a central portion of the link 35 is pivotally supported by a pin 39 to the camera body 7 side. As a result, when the changeover switch 17 is operated, the first light shielding member 21 and the second light shielding member 23 are moved to the guide members 27, 27.
They are arranged so as to move upside down while being guided by.

That is, when the changeover switch 17 is moved upward, the second light shielding member 23 is moved upward via the connecting rod 33 and the connecting portion 31, and the light shielding portion 23A is moved above the inner opening 15A of the aperture grille 15. To do. At the same time, the movement of the connecting portion 31 is transmitted from the link 35 to the connecting portion 29, the first light blocking member 21 moves downward, and the light blocking portion 21 is moved.
A moves below the inner opening 15A of the aperture grille 15, and the standard mode shown in FIGS. 2 and 6 is set.
In this state, the first light blocking member 21 and the second light blocking member 23
Due to this, the state in which the inner opening 5A of the lens barrel 5 is closed is maintained.

Further, when the changeover switch 17 is moved downward, the second light shielding member 23 is moved downward via the connecting rod 33 and the connecting portion 31, and the light shielding portion 23A is located inside the inner opening 15A of the aperture grill 15. Located at the top of the.
At the same time, the movement of the connecting portion 31 changes from the link 35 to the connecting portion 29.
Then, the first light blocking member 21 moves upward, the light blocking portion 21A is located in the lower portion inside the inner opening 15 of the aperture grill 15, and the panorama mode shown in FIG. 7 is set.
Even in this state, the first light blocking member 21 and the second light blocking member 2
The state in which the inner opening 5A of the lens barrel 5 is closed by 3 is maintained.

According to this embodiment, the first and second light blocking members 2
It is needless to say that the screen size can be switched from the standard mode to the panorama mode and from the panorama mode to the standard mode by moving the 1 and 2 upside down with respect to each other. A slightly larger left and right width than the inner opening 15A of the aperture grille 15 and the inner opening 5A of the lens barrel 5 is sufficient, and moreover, the changeover switch 1
First light blocking member 2 having light blocking portion 21A on the side away from
Since 1 has a large area and has rigidity itself, it is not necessary to add a left and right width in order to move it up and down, and the size of the light shielding frame 19 in the left and right direction can be reduced. Therefore, it is possible to omit the space for the vertical portion of the light-shielding frame, which is provided on the left and right sides of the inner opening 15A of the aperture grill 15 and the inner opening 5A of the lens barrel 5 as in the conventional case, which is advantageous in achieving a compact camera. Becomes Further, the structure of the guide member 27 that guides the first light blocking member 21 up and down is sufficient if it has the guide surfaces 27A that are in contact with the left and right end surfaces 21C of the first light blocking member 21, and the guide member 27 is the second light blocking member. 21
Since it can be used as a guide, the guide member 27 can be disposed without taking a lateral width, which is advantageous in making the camera compact. Furthermore, the first and second light blocking members 21, 2
Since the inner opening 5A of the lens barrel 5 can be always closed by 3,
It is possible to prevent dust from entering the lens 3 portion, which is also advantageous in protecting the lens 3 portion.

[0016]

As described above, according to the present invention, the panorama mode switching switch is operated to move upside down and the upper and lower portions of the optical path between the photographing lens and the film are shielded and opened to change the screen size from the standard mode. In a camera with a panoramic function equipped with two light-shielding members that switch from panorama mode to standard mode,
Forming each of the light shielding members in a plate shape and stacking them in front and back, one of the two light shielding members is formed with a size that covers the optical path with a transparent member and has a height larger than the vertical height of the optical path, The other light-shielding member is arranged above or below the one light-shielding member, and the other light-shielding member is provided with a light-shielding portion that extends in the lateral direction with a predetermined width. Is provided with a light-shielding portion that extends laterally with a predetermined width in the one light-shielding member portion on the opposite side in the vertical direction. Therefore, the size of the light shielding frame in the left-right direction can be reduced, which is advantageous for downsizing the camera.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a camera.

FIG. 2 is a front view of a light shielding frame.

FIG. 3 is a side view of a light shielding frame.

FIG. 4 is a front view of a first light blocking member.

FIG. 5 is a front view of a second light blocking member.

FIG. 6 is a front view showing an aperture grill portion in a standard mode.

FIG. 7 is a front view showing an aperture grill portion in a panorama mode.

FIG. 8 is a front view of a conventional light-shielding frame.

FIG. 9 is a side view of a conventional light-shielding frame.

[Explanation of symbols]

 1 Camera with panoramic function 5 Lens barrel 15 Aperture grill 19 Light-shielding frame 21 First light-shielding member 21A Light-shielding part 23 Second light-shielding member 23A Light-shielding part

Claims (7)

[Claims] 1. A panorama mode switching switch is operated to move upside down, so that the upper and lower portions of the optical path between the photographing lens and the film are shielded and opened to change the screen size from the standard mode to the panoramic mode, and from the panoramic mode to the standard mode. In a camera with a panoramic function including two light blocking members for switching to, the light blocking members are formed in a plate shape and are stacked in front and back, and one of the two light blocking members has a size that covers the optical path with a transparent member. And a height greater than the vertical height of the optical path, the other light-shielding member is disposed above or below the one light-shielding member, and the other light-shielding member extends in the left-right direction with a predetermined width. And a light-shielding portion that extends in the left-right direction with a predetermined width in the one light-shielding member portion that is vertically opposite to the side on which the other light-shielding member is disposed. Digits, panorama function with a camera, characterized in that. 2. The camera with panoramic function according to claim 1, wherein the light shielding member is arranged in the vicinity of the aperture grill. 3. The camera with panoramic function according to claim 1, wherein the light shielding member is arranged between the aperture grill and the lens barrel. 4. The camera with a panoramic function according to claim 3, wherein the inner opening of the lens barrel is closed by the two light blocking members or by one of the light blocking members. 5. The panoramic function according to claim 1, 2, 3 or 4, wherein the vertical movement of the one light-shielding member is guided by guide surfaces slidably contacting both end faces of the light-shielding member. camera. 6. A camera with a panoramic function according to claim 1, 2, 3, 4, or 5, wherein an antireflection coating is applied to both surfaces of the one light shielding member. 7. A camera with panoramic function according to claim 1, 2, 3, 4, 5 or 6, wherein the light shielding portion is formed by applying a black paint or by attaching a light shielding tape.