Abstract: A stereo slide mount capable of adjusting a pitch between the right and left films, preventing a change in the pitch even when it is caused to fall. A plane land 9 is formed at the central portion of a base frame 3. After having adjusted a pitch between the two film holders 2 mounted on the right and left guide grooves, an adhesive label is stuck onto the land and onto the film holders to secure the film holders. A center window 12 is formed in a cover frame 1, so that the surface of the adhesive label can be viewed by eyes. Shooting data and a caption can be written on the surface of the adhesive label, or a picture of the film may be printed thereon on a reduced scale, or a bar code may be printed thereon and may be utilized for a voice guidance or for controlling a projector.

Abstract: A stereo camera capable of photographing a stereo picture maintaining an optimum stereo effect. Right and left lens boards 42R, 42L of a stereo camera 41 are coupled to a camera body 46 via upper and lower two sets of parallel links 47. Parallel grooves 45L, 45R are formed in the lateral direction in the inner portions of the lens boards 42L, 42R, and with which a circular eccentric cam 43 is engaged. When the shaft mounting the cam 43 is turned, the right and left lens boards 42R and 42L move in parallel describing circular loci, making it possible to automatically adjust the focal point as well as the distance between the optical axes of the lenses, which is important for accomplishing a stereo effect.

Abstract: A stereo camera which decreases loss of picture caused by the disagreement of photographing ranges between the right and left lenses. The distance Pl between the optical axes of the right and left photographing lenses 10R, 10L is set to be nearly midway between a distance Plmax between the optical axes at which the photographing ranges of the right and left photographing lenses come into agreement with each other at an infinite point and a distance Plmin between the optical axes at which the photographing ranges of the right and left photographing lenses come into agreement with each other at the shortest photographing distance.

Abstract: A stereo slide mount capable of adjusting perspective feeling of a stereo image into an optimum state, comprising a base frame 3 having a guide groove formed running in the lateral direction, two film holders 2 fitted in the guide groove, and a cover frame 1. Films are mounted on the two film holders 2 on the base frame 3, and the stereo slide mount is mounted on a stereo slide viewer equipped with a cam mechanism for adjusting the gap between the film holders. The pitch between the films is adjusted to obtain an optimum perspective feeling while observing a stereo image, and the cover frame is mounted after the adjustment.

Abstract: A stereo slide mount capable of correctly adjusting the pitch between the films. Horizontal guide grooves 14R and 14L are formed on the lower side of the right and left windows of a base frame 11 of the stereo slide mount, and film holder bars 15R and 15L are fitted into the guide grooves. Verniers are graduated on the right and left film holder bars under the right window and the left window of the base frame. Cam shafts are turned by being inserted in the bearing holes 18 formed at the ends on the inner sides of the guide grooves, whereby the film holder bars are slid outward to correctly adjust the offset amounts relying on the verniers. After the adjustment, perforations at both ends of the films are engaged with the bosses 16 of the film holder bars so as to be placed in position, and a cover frame 1 is mounted on the base frame 11.

Abstract: A stereo camera capable of photographing a stereo picture maintaining an optimum stereo effect. Right and left lens boards (42R, 42L) of a stereo camera (41) are coupled to a camera body (46) via upper and lower two sets of parallel links (47). Parallel grooves (45L, 45R) are formed in the lateral direction in the inner portions of the lens boards (42L, 42R), and with which a circular eccentric cam (43) is engaged. When the shaft mounting the cam (43) is turned, the right and left lens boards (42R and 42L) move in parallel describing circular loci, making it possible to automatically adjust the focal point as well as the distance between the optical axes of the lenses, which is important for accomplishing a stereo effect.

Abstract: A stereo photographic system capable of reproducing a correct stereo image by improving the precision of positions for mounting the films on a stereo slide mount. Positions of the projected images of perforation of the films relative to the focusing plates are measured when a suitable perspective feeding is obtained by using a detecting device that projects the pictures of the films onto a pair of right and left focusing plates and that adjusts the gap between the right and left projected pictures to adjust the perspective feeling. A printer device 81 drives a printer head 87 based upon the position data that are measured, and prints indexes on a base frame 51a of the stereo slide mount to accomplish the positioning with respect to the perforations.

Abstract: A stereoscopic camera for stereoscopic photography, which reduces losses in the screen when taking a picture in a close range and provides optimum stereoscopic effect without the need of adjusting the distance between the slides that are being mounted. A camera body is furnished with reflex finders constituted by a pair of right and left photographing lenses and pentaprisms. The distance between optical axes of the photographing lenses is adjusted by a horizontal shifting mechanism. Focusing plates of the right and left finders are marked with vertical lines at the centers and on the right and left sides thereof. The distance between optical axes is adjusted depending upon the distance to the subject and vertical lines of the right and left focusing plates are brought into agreement. Then, the right and left photographing areas are nearly brought into agreement on the real screen and no loss occurs on the screen.

Abstract: A stereo slide mount can reproduce an accurate stereo effect to facilitate easiness of mounting operation and accurate positioning. Plural types of stereo slide mounts 1 (#1 to #n) that widths W of windows stepwisely decrease have the same pitch Pw of the windows and different width W of the windows and fitting pitches of right and left films. A base film is provided with a positioning pin 6 for engaging perforations of the film, and a cover frame is provided with pin holes 7 to be engaged with the positioning pins 6. The positioning pins 6 and the pin holes 7 are provided at positions that the inner vertical sides of the windows are brought into agreement with the inner edges of the pictures of the film. The stereo slide mount having smaller widths of the windows increases gap width (P.sub.0, P.sub.1, P.sub.2, . . . ) between two sets of right and left positioning pins 6 to extend the pitches of the right and left films, and the outer masking amounts of the right and left films increase.

Abstract: A stereo slide mount system that can reproduce an accurate stereo effect to facilitate a mounting operation and accurate positioning. A transverse or vertical alignment or positioning guide is used to position the stereo slide film in combination with longitudinal positioning pins. In one embodiment, the vertical positioning guide comprises a plurality of pins, and in another embodiment a plurality of raised edges. A set of plural types of stereo slide mounts 1 (#0 to #n) in which the width W of windows stepwisely decreases with each mount having the same window pitch Pw and different window widths W. A base frame is provided with positioning pins for engaging perforations on the film, and a cover frame is provided with pin holes to be engaged with the positioning pins. The positioning pins and the pin holes are provided at positions such that the inner vertical edges of the windows are brought into agreement with the inner edges of the pictures of the film.

Abstract: A stereo slide mount intended to facilitate the mounting operation of a slide film and to improve the accuracy of the operation. A stereo slide mount 1 constructs its system of a plurality of kinds of stereo slide mounts 1 (#-E, - - - , and #E) in which the left and right apertures have an equal width W and an equal pitch PW and in which film positioning pines 6L and 6R formed on a base frame 2 and positioning pins 7L and 7R formed in a cover frame 3 have a pitch P.sub.P changed stepwise. The base frame 2 and the cover frame 3 are united by bringing the perforations of the film on the positioning pins 6L and 6R of the base frame 2 and by fitting the positioning pins in the pin holes 7L and 7R of the cover frame 3. The individual stereo slide mounts have different film offsets so that the parallax can be corrected to reproduce an accurate stereoscopic image by mounting the film on the mount having a numerals of the offset which is decided by a masking extent guide device.

Abstract: A stereo slide viewer can appreciate a stereo image without cutting a roll film photographed by a stereo camera. A film feeder 3 for feeding a roll film F is mounted at the rear of a table 2 of the stereo side viewer 1, and a pair of right and left projection lenses 5R and 5L are provided at the intermediate of the table 2. A pair of right and left focal plates 9R and 9L are mounted at the front of the table 2, and eyepieces 11R and 11L are installed oppositely at the focal plates 9R and 9L. The back surface of the film feeder 3 is illuminated by an illuminator, and one set of images are focused on the right and left focal plates 9R and 9L through the windows of the film feeder 3.

Abstract: A stereo camera has an automatic collimation correcting function and excellent operability of observing right and left pictures by one finder. Right and left photographing lenses 4R and 4L are linearly obliquely moved by an inter-optical axis distance/focus adjusting mechanism, and corrected to an inter-optical distance adapted to a focal distance. A composite prism 5 for synthesizing one picture by inverting the outer one-half portions of the photographing fields of the right and left photographing lenses is interlocked to the focal adjustment by a prism moving cam 16 to be moved back and forth, and the focal distance point on the central extension line of the stereo camera is disposed at the center between the right and left finder pictures irrespective of the inter-optical axes distance. The lateral width of the subject image is changed in response to a focal adjustment, and an accurate focus can be adjusted by varying the shape of the image.

Abstract: A masking-amount guide device for a stereo slide can verify suitable masking amount by observing a stereo slide film strip with the following constitution. Projection lenses 13R and 13L and focusing plates 14R and 14L are provided in a frame 54, a film guide 16 is disposed at the rear. Lens boards 52R and 52L are respectively engaged with the guide slots 55R and 55R of the frame. The right and left guide slots are obliquely moved symmetrically to the optical axis, the lens boards are obliquely moved by the rotation of a cam shaft 25 so that the inner edges of the focusing plates are always brought into agreements with the inner edges of the projection pictures irrespective of the projection magnification. The cam shaft is rotated while observing the images of the focusing plates so that the images are observed at the back of the same plane or pattern as the collimation pattern of the focusing plate.

Abstract: A stereo slide mount which facilitates correct mounting of stereo slides to utilize the advantage of a stereo camera having a function for correcting parallax. The front-side mount frame 11 and the back-side mount frame 12 are provided with windows 13L, 13R, 14L and 14R maintaining a pitch nearly equal to the gap between two human eyes. The windows have vertical and lateral sizes which are slightly larger than the screen region of the slide film F. Positioning pins 15 are provided at upper, lower, right and left portions of the windows 14L, 14R of the back-side mount frame 12, and holes 16 are formed in the front-side mount frame 11 to correspond to the pins 15. The film is positioned while bringing perforations of the slide film F into engagement with the pins 15 which are then forcibly introduced into the holes of the front-side mount frame 11, in order to join the front-side and back-side mount frames 11 and 12 together.

Abstract: A stereo camera allows a rapid photographing and stereo effect correcting function to be compatible by providing a mechanism for automatically adjusting a distance between optical axes of photographing lenses and a manual adjusting mechanism. Lens shifting cams are provided symmetrically at a base frame of the stereo camera, and urged by a spring so that the inner surfaces of the lens shifting cams are pushed upon the right and left lens boards independent from each other. The lens shift cams are formed to automatically focus the photographing ranges of the right and left photographing lenses of a focal distance irrespective of the feeding amounts of the photographing lenses, and the distance between the optical axes are automatically adjusted being interlocked to the focal adjustment.

Abstract: A stereo camera optimally corrects a parallax despite a photographing distance. Lens boards of right and left photographing lenses are mounted with slide guides for obliquely feeding in an inter-optical axis distance approaching direction as the lens boards are fed. When a focusing knob is rotated, the photographing lenses and a finder lens are integrally advanced or retracted in response to the rotating direction of a cam shaft. The slide guides are so disposed that the right and left visual fields are brought into agreement at a close distance at the close distance photographing and the right and left visual fields are brought into agreement at the close distance as compared with the focal distance at the time of remote distance photographing. Accordingly, the unnatural of the remote or close distance feeling generated by the influence of the close distance subject at the human collimation at the time of remote distance photographing, and ideal stereo effect is obtained at all the photographing distances.

Abstract: A stereo slide viewer can appreciate a stereo image without cutting a roll film photographed by a stereo camera. A film feeder 3 for feeding a roll film F is mounted at the rear of a table 2 of the stereo side viewer 1, and a pair of right and left projection lenses 5R and 5L are provided at the intermediate of the table 2. A pair of right and left focal plates 9R and 9L are mounted at the front of the table 2, and eyepieces 11R and 11L are installed oppositely at the focal plates 9R and 9L. The back surface of the film feeder 3 is illuminated by an illuminator, and one set of images are focused on the right and left focal plates 9R and 9L through the windows of the film feeder 3.

Abstract: A prism 11 installed over focal plates 9 and 10 of a reflex-type stereo camera 1 is a composite prism forming two right and left inversion prisms as a unitary structure. The inner one-half pictures of the right and left inverted pictures on the focal plates 9 and 10 are inverted right side left through the prism 11, so that an erect image of the outer one-half picture in the photographing range of the left lens 5 is projected onto the left side of the central projection plane of the prism 11 and an erect image of the outer one-half picture in the photographing range of the right lens 4 is projected onto the right side thereby to synthesize a picture. Thus, the right and left images can be simultaneously seen through one finder, making it easy to view the image and to operate the camera.

Abstract: A lens adjustment device of a stereo camera of this invention operates adjustment rings of right and left lenses of an optical axis distance variable type stereo camera in the interlocking arrangement with each other. Crank arms are provided on stop adjustment rings of lenses mounted on the right and left lens boards capable of adjusting the distance between the optical axes. The right and left crank arms are disposed in symmetry of rotation at 180.degree.. The center of a lever in a vertical direction is fitted to a shaft on a slide frame. The upper end portion of the lever and one of the crank arms are interconnected by a link, while the lower end portion of the lever and the other crank arm are interconnected by another link. When the distance between the optical axes of the right and left lenses is changed by an adjustment mechanism for adjusting the distance between the optical axes, the lever rotates while the stop adjustment rings are kept fixed.