JPH06167760A - Rotary type ranoramic camera having automatic exposure mechanism - Google Patents

Abstract

PURPOSE:To provide a rotary type panoramic camera which photographs and obtains proper exposure while performing exposure control interlocking with the object luminance output of a photometry part integrally or following the camera rotation. CONSTITUTION:The photographing fixing seat 22 for a camera fixing part is fixed on a tripod S'. When a camera is released, a camera rotating part where a photographing lens 35, a diaphragm 51, a slit 54a, camera rotation mechanism 52 and film moving mechanism 81a are provided rotates centering the shaft 22 of the camera fixing part. On the other hand, interlocking with the output from the photometry part 42 which is integral with the camera rotation part and has inclining angle alpha for photographing lens optical axis E, an exposure control circuit 612 works and obtains the proper exposure following the change of the object brightness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary panoramic camera having an automatic exposure mechanism, and more specifically, to obtain a proper exposure while performing exposure control by following a change in subject brightness when the camera is rotated. It is characterized by.

[0002]

2. Description of the Related Art In a conventional rotary panoramic camera, exposure is performed by setting a shutter speed and an aperture that are predetermined by the photographer's intention (for example, see Japanese Patent Laid-Open No. 56-102841). .

[0003]

It is said that the difference between the brightness of a subject and the brightness of the subject is about 200 times, and a single subject is exposed to a particularly bright subject or a subject that is dark due to backlight or a subject that is bright in normal light. There was a problem that overexposure and underexposure would occur when shooting with the settings.

Therefore, there is a demand for a rotary panoramic camera capable of obtaining proper exposure even if there is a difference in brightness of the subject.

According to the first and third aspects of the present invention, a rotary panorama for obtaining a proper exposure by taking an image while performing exposure control in association with a photometric output of subject brightness of a photometric unit that is integrated with or follows the rotation of a camera rotation unit. The purpose is to provide a camera.

It is another object of the present invention to provide a camera that obtains a proper exposure by continuously changing the exposure before and after the change in subject brightness.

[0007]

Such objects are achieved by the following inventions. That is, (1) in a rotary panoramic camera that rotates a photographing lens, an aperture, and a slit, and at the same time moves a film on the rear side of the slit in the opposite direction of the movement of the slit,
Camera rotation provided with a camera fixing portion of the rotary panoramic camera, a diaphragm rotating with respect to the camera fixing portion, the slit, a camera rotating mechanism for rotating a portion other than the camera fixing portion, and a film moving mechanism for moving the film. Section, a photometric unit that is integrated with or follows the rotation of the camera rotation unit, and an automatic exposure mechanism that controls exposure in conjunction with the photometric output of the photometry unit for subject brightness. A rotary panoramic camera with an automatic exposure mechanism that captures a proper exposure by shooting while controlling the exposure by following changes in subject brightness.

(2) A rotary panoramic camera having an automatic exposure mechanism according to claim 1, wherein a photometric central axis is provided with a constant inclination angle in the direction of camera rotation with respect to the optical axis of the taking lens.

(3) In a rotary panoramic camera which exposes an arc-shaped film while rotating the photographing lens and the slit in a horizontal direction with the photographing lens substantially as a rotation center, film winding of the rotary panoramic camera A camera fixing part provided with a mechanism, a camera rotating part provided with a camera rotating mechanism rotating the photographing lens, the diaphragm, the slit and a part other than the camera fixing part rotating with respect to the camera fixing part, and the camera rotating part. It consists of a photometric unit that is integrated with or follows rotation, and an automatic exposure mechanism that controls exposure in conjunction with the photometric output of the photometric unit for subject brightness, and follows changes in subject brightness during shooting due to rotation of the camera rotary unit. A rotary panoramic camera with an automatic exposure mechanism that allows you to take an appropriate exposure while shooting while controlling the exposure.

(4) A rotary panoramic camera having a target exposure mechanism according to claim 3, wherein a photometric center axis is provided with a constant inclination angle in the direction of rotation of the camera with respect to the optical axis of the taking lens.

Here, the "rotary panoramic camera" refers to a camera that has a camera fixed portion and a camera rotating portion, has at least a photographing lens and a slit on the camera rotating portion side, and photographs while rotating the camera rotating portion. .

The "automatic exposure mechanism" means a mechanism for controlling a shutter or an aperture so that the exposure is followed by a photometric output from a photometric portion that integrally or follows the camera rotating portion. A mechanism for controlling exposure by a change, a change in slit width, a change in relative speed between the slit and the film, or a combination thereof.

The "measurement section tilt angle" means the angle with respect to the optical axis of the photographic lens and the central axis of the photometry section of the photometric section tilted in the photographic rotation direction of the photographic lens.

[0014]

The function of the present invention will be described.

The camera fixing part is fixed to a tripod or the like. Here, when the camera is released, the camera rotating unit provided with the taking lens, the diaphragm, the slit, the camera rotating mechanism, and the film moving mechanism starts rotating around the axis of the camera fixing unit. On the other hand, the photometry unit that is integral with or follows the camera rotation unit starts rotation. The automatic exposure mechanism with exposure control works while slit exposure is performed in conjunction with the photometric output of the photometry section of the subject brightness to obtain proper exposure.

The operation of the invention according to claim 2 will be described.

The operation is basically the same as that of the invention described in claim 1, and the operation different from that in claim 2 is that the photometry central axis is provided with a constant inclination angle in the camera rotation direction with respect to the optical axis of the taking lens. The photometry unit rotates, and exposure control is performed in conjunction with this photometry output.

For example, when the subject brightness changes, the output from the photometry unit is changed before the tilt angle, and the exposure is continuously performed before and after the photographing lens optical axis comes to the position where the subject brightness has changed. Work to change.

Next, the operation of the invention according to claim 3 will be described.

The operation is basically the same as the operation of the invention described in claim 1, and the different operation is that in claim 1, the film in the camera rotating portion moves in the direction opposite to the rotating direction in association with the rotation of the camera. The film is provided for slit exposure, but in the third aspect, the film is provided on the camera fixing portion, and the slit in the camera rotating portion rotates to perform slit exposure.

Next, the operation of the invention described in claim 4 will be described.

The operation is basically the same as that of the invention described in claim 3, and the different operation is that the photometry section provided with the photometry central axis with a constant inclination angle in the camera rotation direction with respect to the optical axis of the taking lens. It rotates and controls exposure in conjunction with this photometric output.

[0023]

Embodiments of the present invention will be described with reference to the drawings.

The description will be made after the simple principle of the rotary panoramic camera according to claim 1 and the structures and operations of claims 1 and 2, and then after the simple principle of the rotary panoramic camera according to claim 3 and claim 3. , 4 and the order of operation.

1) A simple principle of the rotary panoramic camera according to claim 1 will be described with reference to FIG.

FIG. 1 is a schematic explanatory view of an embodiment according to claims 1 and 2. It is assumed that the camera rotating unit having the taking lens 35, the slit 54a, etc. is rotated about the shaft 22 at a predetermined angular velocity. Film F1 located on the focal length of the taking lens 35, the film feed roller 31, the sprocket 32
Thus, the camera is moved in the direction opposite to the camera rotation direction at the moving speed obtained by the product of the predetermined angular speed and the focal length. Then, the film F1 is fed to the film F1 in synchronization with the movement of the light incident from the taking lens 35 and the same speed, and the slit 54 is moved.
After passing through a, images are sequentially formed on the film F1 and exposed. As a result, continuous shooting at full-angle shooting angle θ _E is possible.

Here, if the exposure is controlled while rotating the camera in conjunction with the rotation of the camera rotating unit, the light is measured in tandem with or following the rotation, and a panoramic photograph corresponding to the brightness of the subject can be taken.

2) The configuration of the embodiment according to claims 1 and 2,
A description will be given with reference to the drawings of FIGS.

FIG. 1 is a schematic explanatory diagram of an embodiment according to claims 1 and 2 as described above, and FIG. 2 is a control circuit block diagram of the embodiment.

The embodiment is a rotary panoramic camera 1a using 35 mm film having automatic exposure control for photographing a 360 ° subject.

(A) The tripod fixing seat 21a of the camera fixing portion is provided. An attached tripod S can be attached to the tripod fixing seat 21a.

(B) The taking lens 35, the diaphragm 51, the slit 54a, and the taking lens 35 in the camera rotating portion which rotates around the rotation axis Z of the camera rotating portion which is the center of the shaft 22 fixed to the tripod fixing seat 21a.
Camera rotating mechanism 52, film moving mechanism 81a, roller 31 for film feeding, sprocket 32, film sensitivity information 5
5, a film rewinding mechanism 39, and a finder 38 are provided. It should be noted that the camera rotation unit is adapted to receive the cartridge F2.

(C) A photometry unit having a photometry center axis M with a constant inclination angle α in the direction of camera rotation with respect to the optical axis E of the photographing lens is provided, and the photometry unit measures the brightness B of the subject. 42 is provided.

(D) Photometric output L of the photometric section for subject brightness B
In association with 2, an exposure control circuit 612, an automatic exposure mechanism having film sensitivity information 55 for the film moving mechanism for slit exposure and film feeding on the film are provided in the camera rotating section.

A supplementary explanation will be given using the control circuit block.

The control unit 61 includes a sequential control circuit 61
1. The exposure control circuit 612 is provided, and the sequential control 611 performs sequential control from the start button start to the shooting end. The film rewinding mechanism 39, the shielding mechanism 37, and the exposure control circuit 612 are controlled. The exposure control circuit 612 is a photometry circuit 41, film sensitivity information 55, and a camera rotation control mechanism 52.
Are in control.

Further, the photometric circuit 41 receives the signal from the photometric element 42, widens it, and sends it to the exposure control circuit 612.

Further, as the film sensitivity information 55, information on film sensitivity is inputted and sent to the exposure control circuit 612.

The subject brightness value L1 enters the photometric circuit 41 and the photometric circuit output L2 enters the exposure control circuit 612.

An output L3 relating to camera rotation and film movement is output from the exposure control circuit 612.

3) The operation of the embodiments of claims 1 and 2 will be described with reference to the drawings of FIGS. 3 and 4.

FIG. 3 is a flow chart showing the control method of the embodiment, and FIG. 4 is a waveform diagram of the signals L1, L2 and L3 of FIG.

(A) The tripod fixing seat 21a of the camera is fixed to the tripod S. Shooting lens 35 Optical axis E is the shooting start position (θ _O )
Set it at the position (θ _S ) where the tilt angle of the photometry unit is shifted in the direction opposite to the shooting rotation, and press the start button (701 in FIG. 3).

(B) The photometry is started (702 in FIG. 3), and the angular velocity of the camera rotating unit and the film moving speed of 81a of the film rotating mechanism are determined based on the photometric output L2 from the subject light luminance value L1 (FIG. 3). 703).

(C) The camera rotating unit provided with the taking lens, the diaphragm and the slit rotates in the direction of the arrow (70 in FIG. 3).
Four).

(D) Following the rotation of the camera rotation unit, the photometry unit stores the photometry output L2 (705 in FIG. 3).

(E) The angular velocity ω of the camera rotation unit is calculated by the control unit 61 based on the above storage (70 in FIG. 3).
6).

(F) When the subject brightness changes, the speed of the camera rotating unit is automatically fed back (707 in FIG. 3).

(G) Optical axis E of the taking lens of the camera rotating part
It is determined whether or not has rotated from the initial position θ _S by the tilt angle α, and if the tilt angle is not reached, the process returns to before the camera rotation 704 in FIG. 3 (708 in FIG. 3).

( _H ) The photographing lens optical axis is at the photographing start position θ _O
When it comes to, the shielding mechanism 37 opens and light enters the slit (709 in FIG. 3).

(I) After that, it is judged whether or not the optical axis E of the taking lens has rotated to the position θ _E at which the photographing full-angle rotation ends (710 in FIG. 3).

(N) If the rotation is not θ _E , the process returns to the camera rotation 704 in FIG. Although not shown in FIG. 3 between the optical axis E of the taking lens or between θ _O and θ _E , the film is moved in synchronization with the rotation of the camera.

(L) Shooting angle θ _{E When the} camera rotates, the shielding mechanism 37 closes, and at the same time, the camera rotation and film movement stop (712 in FIG. 3).

Now, the case where the brightness of the subject is changed during photographing by rotating the camera will be described in more detail with reference to FIG.

FIG. 4 shows the subject brightness value L1, the output L2 of the photometry element 42 of the photometry section and the camera rotation and film movement output L.
3 shows each state of rotation of the optical axis E of the taking lens.

As an example, a case where the subject brightness changes to become brighter will be described. Assuming that the change in subject brightness occurs at point P, the photometric output L2 of the photometry section captures the change in brightness at point Q, which is before the tilt angle α from point P. This information is processed by the control unit 61 (see FIG. 2), and the camera rotation and film movement output L3 simultaneously changes from the point R to work in the direction of accelerating the camera rotation and film movement. Then, the output L3 corresponding to the brightness changed at the rotated position corresponding to twice the tilt angle α from the point R comes to be output, and continuously changes.

4) A brief description of the rotary panoramic camera according to claim 3 will be given with reference to FIG.

FIG. 5 is a schematic explanatory view of an embodiment of claim 3. The camera rotating unit having the taking lens 35, the slit 54b and the like is rotated around the shaft 22. The light emitted from a certain point θ ₁ passes from the taking lens 35 through the slit 54b to the film F.
Although an image is formed on f1 on No. 1, the light at another one point θ ₂ is blocked by the slit 54b and does not form an image on the film F1. Next, if the photographing lens 35 is further rotated, the light from θ ₁ is blocked, and the light from θ ₂ can pass through the slit 54b to form an image of f2 on the film F1. In this way, the camera rotating unit rotates around the rotation center axis Z ₁ so that the surrounding subject can be photographed on the film F1.

Here, if the exposure is controlled while the camera is rotated in association with the rotation of the camera rotating unit or following the photometry and the camera is rotated in association with the output, a panoramic photograph corresponding to the brightness of the subject can be taken.

5) The construction of the embodiments of claims 3 and 4 will be described with reference to the drawing of FIG.

FIG. 5 is a schematic explanatory view of an embodiment according to claims 3 and 4.

The embodiment is a rotary panoramic camera 1b using a 35 mm film having automatic exposure control for photographing a 140 ° subject.

(B) The camera fixing portion has a tripod fixing seat 21b,
Film moving mechanism 81b, film feeding roller 31, sprocket 32, film rewinding mechanism 39, finder 38,
And film speed information 55 is provided.

A patrone F2 is adapted to be inserted.

(B) The taking lens 35, the diaphragm 51, the slit 54b, and the photographing lens 35 in the camera rotating portion which rotates around the rotation axis Z of the camera rotating portion at the center of the shaft 22 to which the tripod fixing seat 21b is fixed.
And a shielding mechanism 37 is provided.

(C) A photometric section having a photometric central axis M with a constant inclination angle α in the direction of camera rotation with respect to the optical axis E of the taking lens 35 is provided, and the photometric element 42 is provided in the photometric section.

(D) An exposure control circuit 612 equivalent to the first aspect, a camera rotation mechanism 52 for slit exposure of the film F1, and an automatic exposure mechanism having film sensitivity information 55 are provided in association with the photometric output L2. There is.

6) The operation of the third and fourth embodiments will be described with reference to the flow chart of the first and second embodiments and FIG.

The operation of this embodiment is basically the same as that of claims 1 and 2.
The same as the explanation of the action of the above, the different action is that in the claims 1 and 2, the film F1 in the camera rotating portion is interlocked with the rotation of the camera, but in the claim 3, the film is fixed at the time of photographing.

The photometric unit may synchronize the rotational angular velocity of the camera rotary unit with the rotational angular velocity of the photometric unit by a method not shown so as to follow the rotation of the camera rotary unit. Further, the photometric element may be divided into multiple parts and driven by the camera rotating part to be switched.

Further, if the photometric angle of the photometric unit is made wider than that of the vertically long exposure slit, the photometric angle can be continuously changed even if the brightness of the subject changes drastically.

In the exposure control, in the embodiment, the diaphragm 51 and the slit widths 54a and 54b were fixed and the relative moving speed between the slit and the film was changed. It may be an exposure control, each being a single or a combination of changes in the relative speed of the film.

Further, in the embodiment, the inclination angle α of the photometric unit is changed in the film moving speed control waveform L3 as soon as the output waveform L2 of the photometric unit is changed. However, there is a time lag (time delay) in L2 to L3. In that case, α may be taken into consideration in consideration of that amount.

Although the film movement control mechanism and the camera rotation control function are separately provided in the embodiment of claim 1, they may be associated with each other by, for example, a gear train or the like to be integrated.

[0075]

Since the present invention is constructed as described above, it has the following effects.

According to the first and third aspects, even if the subject luminance distribution is different, since the image is taken while performing the exposure control based on the change in the photometric output that follows the rotation of the taking lens, it is possible to take a photograph of proper exposure over the entire screen.

In addition to the above effects, the center axis of photometry is tilted with respect to the optical axis of the photographing lens, so that a change in subject brightness is detected in advance while the camera is rotating. The exposure amount is gently changed to prevent unnatural images, and at the same time, the time delay from the metering output until the exposure control actually starts can be compensated, and the slit-shaped shooting position of the subject and the corresponding slit of the camera It is also possible to eliminate the exposure deviation from the streaky image.

[Brief description of drawings]

1 is a schematic explanatory diagram of an embodiment of claims 1 and 2;

FIG. 2 is a block diagram of a control circuit according to the first and second embodiments.

FIG. 3 is a flowchart showing a control method according to an embodiment of claims 1 and 2.

FIG. 4 is a waveform diagram of signals L1 to L3 in FIG.

FIG. 5 is a schematic explanatory view of an embodiment of claims 3 and 4.

[Explanation of symbols]

1a, 1b Rotating panoramic camera 21a, 21b Tripod fixed seat 22 Axis 31 Film feed roller 32 Sprocket 35 Photographing lens E Photographing lens Optical axis 37 Shielding mechanism 41 Photometric circuit 42 Photometric element M Photometric center axis α Photometric tilt angle 51 Aperture 52 Camera Rotation control mechanism 54a, 54b Slit 55 Film sensitivity information 61 Control unit 611 Sequential circuit 612 Exposure control circuit L1 Subject brightness value L2 Photometric output L3 Camera rotation and film movement output 81a Film movement mechanism 81b Film winding mechanism F1 Film F2 Patrone S ' Tripod B Subject brightness Z Camera rotation axis Rotation axis θ _O Shooting start position θ _S Camera initial position θ _E Shooting end position

Claims (4)

[Claims] 1. A rotary panoramic camera for rotating a photographing lens, an aperture, and a slit, and at the same time moving a film on a rear side of the slit in a direction opposite to the movement of the slit, wherein a camera fixing portion of the rotary panoramic camera. When,
A camera rotating unit provided with the diaphragm that rotates with respect to the camera fixing unit, the slit, a camera rotating mechanism that rotates a unit other than the camera fixing unit, and a film moving mechanism that moves the film, and a rotation of the camera rotating unit. Or, it consists of a tracking photometer and an automatic exposure mechanism that controls the exposure in conjunction with the photometric output of the subject brightness. A rotating panoramic camera with an automatic exposure mechanism that allows you to take an appropriate exposure while taking control. 2. A rotary panoramic camera with an automatic exposure mechanism according to claim 1, wherein a center axis of photometry is provided with a constant inclination angle in the direction of rotation of the camera with respect to the optical axis of the taking lens. 3. A rotary panoramic camera which exposes an arc-shaped film while rotating the taking lens and the slit horizontally with the taking lens as a substantially rotational center,
A camera fixing unit provided with a film winding mechanism of the rotary panoramic camera, and a camera rotating mechanism rotating other than the taking lens, the diaphragm, the slit, and the camera fixing unit rotating with respect to the camera fixing unit were provided. The rotation of the camera rotation unit includes a camera rotation unit, a photometry unit that is integrated with or follows the rotation of the camera rotation unit, and an automatic exposure mechanism that controls exposure in conjunction with the photometry output of the photometry unit of subject brightness. A rotary panoramic camera with an automatic exposure mechanism that captures a proper exposure while performing exposure control while following changes in subject brightness during shooting. 4. A rotary panoramic camera with an automatic exposure mechanism according to claim 3, wherein a photometric central axis is provided with a constant tilt angle in the direction of camera rotation with respect to the optical axis of the taking lens.