JPH0467137A - Camera for both stereo and panorama - Google Patents

Abstract

PURPOSE:To take both stereo photography and panoramic photography with the same camera by using the same film winding quantity and lenses of the same focal distance and brightness. CONSTITUTION:The size of the picture plane of a camera 1 is set in such a way that the longer side of stereo photography is set to the half of the longer side of panoramic photography. One wide angle lens 4 for panoramic photography and two lenses 2 and 3 having ordinary angles of vision for stereo photography are prepared as the photographing lenses of the camera 1 and the lenses are switched to each other. Since the focal distances and brightnesses of the lenses 2-4 are the same, not only the focus and exposure adjustment, but also the size of the angle of vision are made the same for both panoramic and stereo photography. Therefore, stereo and panoramic photography can be taken with the same camera.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a camera that can switch between stereo photography and panoramic photography and take both types of photography by being equipped with three lenses with the same focal length. It is related to.

(Conventional technology) When taking stereo photographs, the principle of stereoscopic vision is used to
The same image was captured on two screens using two different lenses, and a stereo image was created by looking at the image created on the film surface. On the other hand, panoramic photography is a method of taking pictures with a wide angle of view using a lens with a large image circle on a screen with longer sides than the standard screen size of the film used (36 x 24 mm for 35 mm film). However, because stereo photography and panoramic photography differ greatly in screen size and image circle of the photographic lens, they existed as separate cameras.

(Problem to be solved by the invention) Conventional stereo cameras and panoramic cameras have different screen sizes on which photos are taken and different angles of view of the lenses used, so it is difficult to take stereo photos with one camera. It was not possible to switch between panoramic photos.

(Means for solving the problem) Set the camera screen size to half the long side of the panoramic photo as the long side of the stereo photo, and set the camera screen size to the size of the double power for the stereo photo. There is one lens with a wide angle of view for panoramic photography, and two lenses with 99 angles of view for stereo photography. By switching between each lens, you can take stereo photos and panoramic photos in one. This made it possible to take pictures with the same camera.

(effect) Use films that are widely available on the market.

When considering 35mm film, the standard screen size is 36x24mm. This is the screen size for stereo photography, and the frame spacing is 3 mm.

The screen size of a panoramic photo is the two sides of a stereo photo including the frame spacing. Therefore, the screen size is 75X2
It will be 4 mm. Since the length of film required for one scene is the same, the winding area is also the same and can be shared. Two lenses with a viewing angle that can cover a standard screen are used for stereo photography, and one wide-angle lens that can cover a 75 x 24 mm screen is used for panoramic photography. The three lenses used have the same focal length and brightness. By having the same focal length, you can control the shooting distance (focusing) in common for all three lenses. By making the brightness the same, it is possible to control the exposure based on the brightness of the subject in the same way for all three.

(Example) The present invention will be explained below using examples.

FIG. 1 is a perspective view showing a camera of the present invention.

1 is a camera body having a lens 2.3 for stereo photography and a lens 4 for panoramic photography. At the top of the camera body 1, there are a switch 5 for switching between stereo and panorama, and a shutter button 6.

The photographer selects the selector switch 5 and presses the shutter button 6.
You can get the desired photo by pressing .

When the selector switch 5 is switched to the stereo side, the object silver is recorded on the film surface by the stereo photographic lens 2.3. FIG. 2(a) is a plan view showing the relationship between an image circle and a photographic film. Reference numerals 21 and 22 are image circles of images obtained by a stereo photographic lens, and two images are recorded in one frame.

When the selector switch 5 is switched to the panoramic side, the stereo photographic lens 4 records the subject silver on the film surface.

Figure 2 (b) is a plan view showing the relationship between the image circle and the photographic film. ).

FIG. 3 is a front view showing the photographing screen and finder size switching of the camera of the present invention.

Reference numeral 5 denotes a changeover switch that is linked to the finder 31, the photographic screen 32, and a shutter mechanism (not shown), and switches between stereo and panorama.

Changeover switch 5 from the panorama size indicated by the solid line in the figure
When the lever 33 moves to the right, the lever 33 moves using the shaft 34a as a fulcrum, and the connecting piece 35 is moved to the left by the pin 37a fitted in the long groove 36a provided in the arm/<-33. Connecting piece 35
A pin 37b that fits into the long groove 36b of the screen size switching arm 38 is fixed to the tip of the screen size switching arm 38, and the screen size switching arm 38 is moved using the shaft 34b as a fulcrum by movement of the connecting piece 35a.

At the same time, as the changeover switch 5 is moved to the right, the pin 37c of the finder switching shield A39a is inserted into the long groove 36 of the connecting piece 35b.
M 34 c is fitted into M 34 c, and moves using M 34 c as a fulcrum, thereby shielding the finder 31. Further, the finder switching shielding plate l339b at the tip of the connecting piece 35b also moves to the right and shields the finder 31.

This completes the switch to the viewfinder and shooting screen for stereo photography. Since the focal length and brightness of the photographic lenses of the present invention are the same, the focus adjustment and exposure adjustment are also the same. Winding is also panoramic.

Both stereo and stereo systems use the same screen size, so they are the same.

(Effect of the invention) The same focal length and
By using a bright lens, special types of stereo photography and panoramic photography can be easily taken with a single camera, and the camera can be manufactured at low cost. In addition, in this example, the viewfinder field of view and the screen were switched in conjunction with each other, but it is also possible to check the field of view by setting a mark in the viewfinder.
If two stereo cuts are obtained when mounting the film, the camera can be provided at a lower price.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the camera of the present invention, Fig. 2 is a plan view showing the relationship between the film screen shot with the camera of the invention and the image circle, and Fig. 3 is the screen and viewfinder of the camera of the invention. FIG. 3 is a front view showing size switching. 1... Camera body, 2.3... Lens for stereo photography, 4... Lens for panoramic photography, 5... Changeover switch, 38... ...Screen size switching arm, 39a...Finder switching shield A, 39b...Finder switching shield B
.

Claims (1)

[Claims] The length of the camera's shooting screen is 1 on the short side and 3 on the long side.
and is equipped with three photographing lenses having the same focal length, one having an image circle encompassing the photographing screen and two having image circles encompassing each half of the photographing screen, A stereo/panoramic camera that features equal brightness.