JP3370074B2 - Stereo slide mount - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo slide mount, and more particularly to a stereo slide mount capable of adjusting a film mounting pitch. It is well known that when mounting a film on a stereo slide mount, attention must be paid to the mounting pitch of the left and right films. That is, if the stereoscopic image is viewed farther than the stereo window (the aerial image that the left and right windows of the stereo slide mount coincide and appear as one window), a natural perspective can be obtained. In addition, the pitch of the same subject image on the left and right films must be extended more than the left and right window pitches of the stereo slide mount by adjusting the pitches of the left and right films. In a stereo camera having a pair of left and right lenses, the pitch of the same subject image on the left and right films increases as the subject distance decreases. And since the image on the film is upside down and left and right,
The left and right films are each rotated 180 degrees and mounted on the stereo slide mount in an upright image state.If you mount the film without correcting the film mounting pitch at this time,
The image pitches of the left and right subjects on the stereo slide mount are reduced in the opposite manner as when shooting. Therefore, it is necessary to correct the subject image pitch by extending the mounting pitch of the left and right films according to the subject distance, but the conventional stereo slide mount having a configuration in which the films are glued is
It is difficult to finely adjust the mounting position of the film, and the film is often mounted at an inappropriate mounting pitch. [0004] The applicant of the present invention has already proposed a stereo slide mount capable of adjusting the mounting pitch of the left and right films in order to eliminate the difficulty in handling the conventional stereo slide mount. This stereo slide mount is composed of a base frame, a pair of left and right film holders that can slide to the left and right with respect to the base frame, and a cover frame.Films are attached to the left and right film holders and mounted on the stereo slide viewer. By adjusting the distance between the left and right film holders while viewing the stereoscopic image, an appropriate subject image pitch can be obtained. A stereo slide mount formed so that a pair of left and right film holders can be slid right and left with respect to a base frame is easy to adjust a subject image pitch. If the film holder is dropped or a strong impact is applied from the outside, the film holder may slide to change the pitch. Therefore, there arises a technical problem to be solved in order to prevent the fluctuation of the pitch after the subject image pitch is adjusted, and an object of the present invention is to solve the above problem. SUMMARY OF THE INVENTION The present invention has been made in order to achieve the above object, and has a base frame, a cover frame, and a window having the same dimensions as the screen dimensions of a film. It consists of two film holders that can mount films, forms a left and right guide groove on the surface of the base frame, and engages the two film holders with the guide groove of the base frame to adjust the pitch of the two film holders In the stereo slide mount that was made possible, one adhesive label was attached to the inner edges of the left and right film holders and the center of the base frame, and the left and right film holders were fixed to form a cover frame.
An object of the present invention is to provide a stereo slide mount characterized in that a surface of an adhesive label is exposed in a central window . An embodiment of the present invention will be described below in detail with reference to the drawings. Fig. 1 shows a cover frame 1 and two film holders that constitute a stereo slide mount.
2 and the base frame 3 are all resin injection molded parts, and FIG. 1 (a) shows the base frame 3 of the cover frame 1.
3 shows the contact surface (back surface) of the substrate. As in the conventional stereo slide mount, left and right windows 4L, 4R, 5L, 5R for film see-through are formed in the cover frame 1 and the base frame 3, and are sandwiched between the base frame 3 and the cover frame 1. Windows 6 are also formed in the two film holders 2 to be formed. The vertical dimensions of the film see-through windows 4L, 4R, 5L, 5R, 6 are equal to the vertical dimensions of the screen of the stereo slide film, and the width W0 of the windows 4L, 4R of the cover frame 1 is larger than the screen width of the film. The width W1 of the window 6 of the film holder 2 is slightly smaller than the width of the screen of the film, and the width W2 of the windows 5L and 5R of the base frame 3 is the width of the window 4 of the cover frame 1.
Any value equal to or greater than the width W0 of L, 4R. Note that the center pitch of the left and right windows 4L and 4R of the cover frame 1 is desirably about 63 mm, which is substantially equal to the distance between human eyes. As shown in FIGS. 1F and 1G, the base frame
A plurality of pins 7 are formed on the upper and lower edges 3a of the pair 3, and a pair of right and left dovetailed guide grooves 3b are formed in the upper and lower middle portions. The guide groove 3b forms a sliding pair with the film holder 2 having a trapezoidal cross section as shown in FIG. 1 (e), and the film holder 2 engaged with the guide groove 3b can be slid left and right. As shown in FIGS. 1A and 1B, the cover frame
Pin holes 8 are formed on both upper and lower edges of the base frame 3 so as to be fitted with the pins 7 of the base frame 3.If the cover frame 1 is placed on the base frame 3 and the pins 7 and the pin holes 8 are fitted, The base frame 3 and the cover frame 1 are integrally joined. A land 9 acting as a stopper for the film holder 2 is provided between the left and right guide grooves 3b of the base frame 3, and the two film holders 2 are slid in the approaching direction to the land 9. If they are brought into contact, the window pitch of the two film holders 2 becomes the maximum value in the negative direction of the adjustment range, and the window pitch of the film holder 2 at this time is slightly narrower than the window pitch of the cover frame 1. As shown in FIG. 1C, the film holder 2
Is a pentagon with one vertical side projecting in a V-shape, and is mounted in the guide groove 3b of the base frame 3 with the V-shaped vertical sides of the same two film holders 2 facing each other. Two film positioning pins 10 on the left and right are provided above and below the window 6 of the film holder 2, and when the perforation of the film is set by engaging with the film positioning pins 10, the film screen and the window 6 of the film holder 2 are connected. Matches. Since a helical cam of a stereo slide viewer for pitch adjustment, which will be described later, is in contact with the apex of the V-shaped vertical side of the film holder 2, the land 9 is in a state where the two film holders 2 are in contact with the land 9. Film holder
The shape is such that a gap is formed between the vertex of the V-shaped vertical side of FIG. As for the positioning of the film in the vertical direction, the thickness of the film holder 2 is formed to be slightly smaller than the depth of the guide groove 3b of the base frame, and
The upper and lower edges 3a position the film vertically. Alternatively, the vertical width of the film holder is made wider than that of the illustrated example, and a shallow horizontal groove having a width equal to the vertical width of the film is formed at the upper and lower center of the film holder, and the vertical position of the film is positioned by the horizontal groove. There are various methods such as a method and a method of forming positioning bosses in contact with upper and lower sides of the film in the film holder to perform positioning, and there is no particular limitation. A film holder 2 is provided on the back of the cover frame 1.
A horizontally elongated recess 11 is formed to avoid interference with the film positioning pin 10 .When the cover frame 1 is attached to the base frame 3, the film holder 2 on the base frame 3 is You can slide it freely. A center window 12 is provided between the windows 4L and 4R of the cover frame 1 so that an adhesive label attached to a base frame described later can be seen through the center window 12.
The central window 12 may be a simple hole, or may be a transparent window provided with a transparent resin plate or a glass plate in order to prevent the adhesive label from being stained. In addition, the convex portion 1a which enters the guide groove 3b of the base frame 3 is provided at both left and right ends of the cover frame 1.
May be provided. FIG. 2 shows an adhesive label 13 to be attached to the base frame 3. The adhesive label 13 is slightly larger than the central window 12 of the cover frame 1 and can be written or printed on the surface. A vertical line lc is printed at the upper end of the center. As shown in FIG. 1F, the land 9 of the base frame 3 is marked with a horizontal guideline lh and a vertical guideline lv indicating the position where the adhesive label 13 is attached. By aligning the vertical line lc of the adhesive label 13 with the vertical guideline lv according to the guideline lh, the adhesive label 13 can be attached to the center of the base frame 3, and the central window of the adhesive label 13 and the cover frame 1 can be attached.
12 and exactly aligned. After adjusting the pitch of the two film holders 2 to an appropriate value, an adhesive label 13 is attached to the center of the base frame 3 to fix the two film holders 2 and the cover frame 1 is attached to the stereo. The slide mount is completed. It is convenient to arrange and select a stereo slide mount by attaching an adhesive label 13 on which a title, photographing data, or the like is written or printed. Further, the contents of the stereo slide mount can be understood at a glance by using an index print type adhesive label obtained by reducing and printing the image of the left or right film. Further, a system may be configured in which a data code such as a bar code is printed on the adhesive label, and various controls are performed by the data code label and the data code reader. For example, a data code reader may be provided in a stereo slide viewer or a stereo slide projector, and the read code may be used to control a voice guide, display characters or pictures, or control the projector. In this case, a method of directly converting the code into voice or the like, a method of storing data such as voice in the control device in advance, and reading and processing data corresponding to the code read from the stereo slide mount can be used. The processing method is not particularly limited. Further, the above-described character printing, image index printing, and data code printing may be appropriately combined. In the above stereo slide mount, the pitch of the film holder can be easily adjusted by using the stereo slide viewer already proposed by the present applicant. FIG. 3 shows a stereo slide viewer 21 in which a pair of left and right eyepieces 23L and 23R are arranged in front of a groove-shaped slide mount holder 22, and a rear of the slide mount holder 22, as in a conventional stereo slide viewer. The light bulb 24 is turned on by a battery (not shown) housed behind the reflector 25, and the slide mount holder 22 is turned on by the reflector 25. Irradiate light to the back of the. The left and right eyepiece lens holders 26L and 26R have a structure capable of adjusting the distance between the optical axes and the focus in the optical axis direction. Leaf spring 22a on the rear wall inside slide mount holder 22
The stereo slide mount in the slide mount holder unit 22 is pressed against the wall surface on the eyepiece lens side by the leaf spring 22a for positioning. A film pitch adjusting device 27 is arranged between the left and right eyepiece optical systems. The film pitch adjusting device 27 adjusts the interval between the film holders 2 of the stereo slide mount by rotating the helical cams 28L and 28R. As shown in FIG. 4, a pair of left and right helical cams 28L, 28R are formed by partially cutting the outer peripheral surface of a disk straightly.
Helicoid-shaped cam surfaces 29L, 29R are formed on the outer edge of the outer side surface as shown in FIG.
The left cam surface 29L and the right cam surface 29R are symmetrical. The two helical cams 28L, 28R are fitted on a cam shaft 31 with a spur gear 30 interposed therebetween, and the left and right ends of the cam shaft 31 are supported by bracket bearings 32 provided on a viewer frame. Below the camshaft 31, a pinion shaft 33 is arranged in parallel with the camshaft 31, and a pinion 34 fitted to the pinion shaft 33 meshes with the spur gear 30 and is attached to an end of the pinion shaft 33. Turning the knob 35 rotates the helical cams 28L and 28R. As shown in FIG. 5, the left and right bracket bearings
The center hole diameter of 32, the two helical cams 28L, 28R, and the central spur gear 30 increases from left to right in the order of the left bracket bearing 32, the left helical cam 28L, the spur gear 30, the right helical cam 28R, and the right bracket bearing 32. The camshaft 31 also has a stepped shape corresponding to each hole diameter. When assembling the film pitch adjusting device 27, two helical cams 28L, 28R and a central spur gear 30 are set between the left and right bracket bearings 32, and the phases of the two helical cams 28L, 28R are accurately adjusted. When the camshaft 31 is press-fitted leftward from the outside of the right bracket bearing 32 in a state in which the two helical cams 28L and 28R and the central spur gear
The camshaft 31 and the camshaft 31 are tightly fitted, and the camshaft 31 and the left and right bracket bearings 32 are a clearance fit, so that the two helical cams 28L and 28R and the central spur gear 30 are integrated. The gear for driving the helical cam may be a worm gear or a bevel gear instead of the illustrated spur gear 30, and is not particularly limited. FIG. 6 shows a collimation pattern mask 41 that can easily recognize the optimum pitch when the film pitch of the stereo slide mount is adjusted by the stereo slide viewer 21. The collimation pattern mask 41 has a similar shape to the cover frame 1, and the portions other than the left and right transparent windows 42L and 42R are coated with a light-blocking paint so that light does not pass therethrough,
Alternatively, it is formed of a colored resin, and a square window 43 is provided at the center. The dimensions and positions of the transparent windows 42L, 42R, the pin holes 44, the recesses 45 and the like are the same as those of the cover frame 1, and a plurality of vertical lines are formed on the rear surfaces (surfaces in contact with the film) of the transparent windows 42L, 42R. The same primary collimation pattern CP is printed, and this surface is subjected to anti-Newton ring processing. As shown in FIG. 6B, the transparent windows 42L and 42L
The surface of R is slightly lower than its surroundings, and does not come into contact with the wall surface of slide mount holder 22 of the stereo slide viewer to prevent scratches on transparent windows 42L and 42R. In addition, in order to prevent the surface of the film from being scratched when adjusting the film pitch, the back surface of the collimation pattern mask 41 is coated with a material having a low coefficient of friction such as Teflon (registered trademark) or polyethylene to smooth the surface. It is desirable to finish. The left and right ends of the stereo slide mount and the collimation pattern mask 41 are arc-shaped, so that the stereo slide viewer can be easily inserted into the slide mount holder 22, and the slide mount holder 22 can be easily inserted. The horizontal width of the stereo slide mount can be made the same size as the horizontal width of the base frame 3 to prevent the stereo slide mount from shifting in the left-right direction. Next, the procedure for mounting the film and adjusting the film pitch will be described. 1. As shown in FIG. 7, two film holders 2 on the left and right sides are mounted on the base frame 3, and the film F is mounted on the film holder 2 by moving the left and right film holders 2 to a position where they are closest to each other. At this time, the left and right film holders 2
Is slightly narrower than the window pitch of the cover frame 1. 2. Attach the collimation pattern mask 41 to the base frame 3. As shown in FIG. 8, the inner end of the film holder 2 appears to be exposed in the central window 43 of the collimation pattern mask 41. 3. Base frame 3 with collimation pattern mask 41
Into the slide mount holder section 22 of the stereo slide viewer 21. 4. Eyepieces 23L, 23R of stereo slide viewer 21
, The perspective of the image with respect to the image of the collimation pattern CP of the collimation pattern mask 41 is observed. The image is a collimation pattern CP
If it can be seen on the same plane as the above or in the back of the collimation pattern CP, the film pitch of the stereo slide mount is appropriate, and there is no need to adjust the film pitch.
Therefore, remove the stereo slide mount from the stereo slide viewer 21, remove the collimation pattern mask 41 from the base frame 3, and replace the cover frame
Attach 1 to complete the mounting work. However, in most cases, the subject in the foreground is seen in front of the collimation pattern CP. In this case, the film pitch needs to be adjusted. 5. Turn the knob 35 of the stereo slide viewer 21 to adjust the film pitch. When the pinion 34 is rotated in the counterclockwise direction in FIG. 4, the helical cams 28L and 28R rotate clockwise from the initial position shown in FIG. 4, and the tips of the cam surfaces 29L and 29R enter between the two film holders 2 and the cam Surface 29L, 29R
Touches the vertex of the inside vertical side of the film holder 2 and pushes it outward, so that the interval between the two film holders 2 increases. At this time, the area where the outer edge of the screen of the film is masked by the edge of the window of the collimation pattern mask 41 increases, and the distance of the stereoscopic image with respect to the image of the collimation pattern CP recedes far. To go. The optimum film pitch is when the stereoscopic image is visible on the same plane as the collimation pattern CP or behind the collimation pattern CP. At this time, the knob 35 is reversely rotated to initialize the helical cams 28L and 28R. Return to position. Then, the stereo slide mount is detached from the stereo slide viewer 21 and the base frame 3 is removed.
Remove the collimation pattern mask 41 from, attach the adhesive label 13 to the center of the base frame, and
And mount the cover frame 1 to complete the stereo slide mount with the optimal film pitch. The present invention is not limited to the above embodiment, and various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications. is there. As described above, the stereo slide mount of the present invention is configured such that the pair of left and right film holders attached to the base frame is fixed by the adhesive label. In this case, it is possible to prevent the pitch of the film holder from fluctuating when the film holder is dropped or a shock is applied.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a stereo slide mount of the present invention,
(A) is a rear view of the cover frame, (b) is a side view of the cover frame, (c) and (d) are front views of the film holder, (e) is a side view of the film holder, and (f) is a base frame. (G) is a side view of the base frame. FIG. 2 is a front view of the adhesive label. FIG. 3 is a plan sectional view of the stereo slide viewer of the present invention. FIG. 4 is a side view of a film pitch adjusting device of the stereo slide viewer. FIG. 5 is a plan sectional view showing an assembling process of the film pitch adjusting device. FIG. 6 shows a collimation pattern mask, (a) is a front view,
(B) is a side sectional view. FIG. 7 is a front view showing a procedure of a film pitch adjusting operation, in which a film holder and a film are mounted on a base frame. 8 is a front view of the base frame in the state of FIG. 7 with a collimation pattern mask mounted thereon. [Description of Signs] 1 Cover frame 2 Film holder 3 Base frame 9 Land 12 Central window 13 Adhesive label 21 Stereo slide viewer 27 Film pitch adjusting device 28 Helical cam 30 Spur gear 34 Pinion 41 Collimating pattern mask 42 Transparent window 43 Central window

Claims (1)

(57) [Claims 1] A base frame, a cover frame, and two film holders having windows of the same dimensions as the screen dimensions of the film and capable of mounting one frame of film. The left and right inner sides of the left and right film holders in a stereo slide mount where the left and right direction guide grooves are formed on the surface and the two film holders are engaged with the guide grooves of the base frame to adjust the pitch of the two film holders. the left and right film holder is secured to the central parts and the base frame by attaching a piece of adhesive labels, cover - contact in a central window formed in the frame
A stereo slide mount that exposes the surface of a wearing label .