KR100210873B1 - Stereo slide mounde and guide device of mask size - Google Patents

Abstract

[assignment]

Easily mount the stereo slide and improve accuracy.

[Resolution]

The size of the window of the base frame of the stereo slide mound is the same as the screen of the film, and a pin corresponding to the perforation of the film is provided at four corners of the window, and a hole corresponding to the pin is formed in the cover frame. The cover frame has the same width as that of the base frame, and a plurality of types are provided in which the window width is reduced in steps. Each of the cover frame and the window size is the same, and a plurality of mask quantity guide devices 31 having a collimation pattern 35 installed at the same position on the left and right windows are sequentially fixed to the base frame, and the stereo slide film Observe the picture in a stereo slide viewer. When the cover frame of the same number as that of the mask quantity guide device when the distance sense between the near mirror image and the collimation pattern 35 is matched is fitted, the parallax is appropriately corrected to obtain an accurate stereo image.

Description

Stereo slide mound and mask volume guide

1 shows the present invention stereo slide mound of claim 1,

(a) is a front view of a base frame.

(b) (c) (d) is a rear view of a cover frame.

2 is an assembly explanatory view of the stereo slide mound of claims 1 and 3,

(A) (b) (c) (d) of FIG. 3 is a front view of the mask amount guide apparatus of Claims 4 and 5, respectively.

(A), (b) of FIG. 4 is an explanatory view of the image seen with both eyes of the FIG. 4 mask quantity guide apparatus, respectively.

(A) (b) (c) (d) of FIG. 5 are front views of the framing mask of the stereo slide mound of Claim 2, respectively.

6 is an assembly explanatory diagram of the stereo slide mound according to claim 2;

FIG. 7 is a front view showing another embodiment of the framing mask shown in FIG.

8 is a front view of the mask amount guide device of claim 6.

9 is a configuration explanatory diagram of a mask amount guide device according to Claims 6 and 7.

FIG. 10 is an explanatory diagram showing screens on the left and right of the stereo slide.

11 is an explanatory diagram of a stereoscopic view of a stereo slide.

12 is an exploded front view of a conventional stereo slide mound.

FIG. 13 illustrates a conventional positive pitch stereo slide mound,

(a) is a front view of a cover frame.

(b) is sectional drawing of (a).

(c) is a front view of the base frame.

(d) is sectional drawing of (c).

* Explanation of symbols for main parts of the drawings

21: cover frame 21a: hinge portion

22: base frame 23, 24: window

25: positioning pin 26: hole

31: mask amount guide device 32: frame

33: window 34: transparent film

35: collimation pattern 41: framing mask

41a: Notch 42: window

51: mask amount guide device 52: slide guide table

53: stereo slide holder 54: projection lens

55 lens holder 56 delivery screw

57: focus plate holder 58: focus plate

59: collimation pattern 60: straightening prism

61 eyepiece F: slide film

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo slide mound and a mask width guide device of a stereo slide mound, and more particularly, to a stereo slide mound and a stereo slide mound mask width guide device intended for ease of mound operation.

FIG. 10 shows the left and right photographing screens PL and PR of the stereo camera, and between the left end AB of the left screen PL and the right screen PR according to the difference in the field of view of the left and right photographing lenses of the stereo camera. The area between the right and right end portions of the screen is not overlapped on the left and right screens. These non-overlapping portions (AB, CD) do not form a stereoscopic image when viewed with a stereo slide viewer, and as shown in FIG. The edges of the other window will overlap. Therefore, to prevent this, the width of the window of the stereo slide mound is formed to be narrower than the screen size of the slide film to shield the non-overlapping portions A-B and C-D.

FIG. 12 shows the stereo slide mound 1 made of paper, and folded the upper half forward at the position of the fold line 2 in the upper and lower middle, so that the front side cover frame 3 of the upper half and the rear side base frame 4 of the lower half are shown. It is formed to adhere. It is formed so that the cover frame 3 and the back side base frame 94 of the lower half part may adhere | attach. In the cover frame 3 and the base frame 4, the windows 5L, 5R, 6L, 6R are punched on the left and right sides, respectively, and the windows are arranged symmetrically with the fold line 2 as the symmetry axis. have.

On the upper and lower sides of the windows 6L and 6R of the base frame 4, reference lines 7 and 8, which are the targets of the upper and lower positions of the slide film, are printed, and the left slide of the pair of stereo slides cut every coma is lower left. The edges are bonded to each other by positioning the window 6L, and the right slide is bonded to the lower right window 6R in the same manner, and then the cover frame 3 is folded and bonded to the base frame 4.

When positioning the slide film, use a mound gauge marked with a pitch such as the pitch (P ₁ ) of the left and right windows of the stereo slide mound (1) on a transparent plastic plate or a glass plate. This is done by positioning the pitch equal to the pitch P ₁ of the window.

At this time, in the subject photographs of the distant scenery like the landscape photographs, the positions of the subjects on the left and right screens are the same, and the pitch of the film and the pitch of the window (P ₁ ) are adjusted to be almost the same, Since the subjects on the left and right screens are approached by the lens parallax, the film pitch which makes the pitches of the left and right subjects equal to the pitch P ₁ of the window becomes larger than the pitch P1 of the window. Therefore, a multiple-type stereo slide mound that has the same center pitch (P ₁ ) and window width (W) in several steps to shield left and right screen outer overlaps and not to expose the left and right inner edges of the window. Is prepared, and the stereo slide mount is selected and mounted according to the shooting distance of the subject.

In addition, the applicant proposes a stereo slide mound formed so that the stereo slide is set to a certain pitch. As shown in FIG. 13, the stereo slide mound is constituted by the cover frame 11 and the base frame 12, and the cover frame 11 and the base frame 12 are respectively windows 13L, 13R, 14L, 14R) is installed.

The four corners of the windows 14L and 14R of the base frame 12 engage with the perforation of the slide film F to be fixed so that the screens of the two slide films are matched with the windows 14L and 14R, respectively. Positioning pins 15 are provided, and holes 16 corresponding to the positioning pins 15 are provided around the windows 13L and 13R of the cover film 11 to position the positioning pins 15 and the holes. It is comprised so that the base frame 12 and the cover frame 11 may be joined by fitting the 16.

The stereo slide mound is suitable for the stereo camera proposed by the present applicant, and the stereo camera has the shift position of the left and right lenses while the perforation of the film F and the relative position of the screen become the same on the left and right. By adjusting the center distance, stereo pictures can be taken with a parallax that is optimal for the distance to the subject. Therefore, when the stereo slide photographed with this stereo camera is mounted on the stereo slide mound described above, the left and right films are fixed at a constant pitch P ₂ to obtain an optimal stereo effect and to eliminate the loss of the screen as much as possible.

The stereo slide mound of the film pitch fixed type shown in FIG. 13 eliminates the trouble of mound work and the film pitch in the conventional stereo slide mound, but adjusts the parallax according to the distance of the subject during shooting. There is a need. Therefore, when the stereo slide photographed by a general stereo camera without a shift shift of the lens is mounted on the film pitch fixed stereo slide mound, the non-overlapping portion of the left and right screens may be unobtrusive.

Therefore, despite the presence or absence of the mechanism for adjusting the distance between the lenses of the stereo camera, there is a technical problem to be solved in order to easily mount the stereo slide without having to adjust the pitch and to obtain accurate stereoscopic effect. Therefore, an object of this invention is to solve the said subject.

The present invention proposes to achieve the above object, and is a stereo slide mound that mounts a stereo slide taken by a stereo camera in which the perforation of the perforated film and the relative position of each of the left and right pairs of shooting screens are the same. A screen of two slide films composed of a base frame and a cover frame provided with two rectangular windows, respectively, in conjunction with the perforation of the slide film to be fixed to the film mounting surface of the base frame described above. Positioning pins for fitting the respective pins to windows, and the holes corresponding to the positioning pins are provided in the film pressing surface of the cover frame, and the above-mentioned positioning pins and holes are fitted to the base frame and the cover frame. In the stereo slide mound to join, between the left and right windows of the cover frame Stereo slide film by making a plurality of types of cover frames whose width is equal to the width between the windows of the base frame described above and the widths of the windows are sequentially reduced with respect to the screen width of the film, and selecting the cover frames and bonding them to the base frame. Stereo slide mound and 1-coma slide film, which has a spherical window in the center, and a locking hole corresponding to the positioning pin of the base frame. A framing mask, wherein the positional relationship between the locking hole and one vertical side of the window is the same as the positional relationship between the vertical side of the screen of the stereo slide film and the perforation, and the window width decreases in order than the screen width of the slide film. Create a framing mask of the type Stereo mounds and the left and right center portions of the cover frame are selected so as to be overlapped with the slide film on the base frame, and the cover frame is fitted to the base frame to adjust the shielding area on the left and right sides of the stereo slide film. It is to provide a stereo mound characterized in that the hinge is installed on the freely formed bend.

In addition, the transparent film or the transparent glass is attached to the windows of the frame of the same type and each of the cover frame of the plurality of window widths, and the same collimation pattern is displayed at the same position of the left and right windows. The mask width guide device used for the stereo slide mound and the collimation pattern provide a mask width guide device for the stereo slide mound, characterized in that the pattern includes a plurality of vertical lines or a plurality of vertical lines.

Also, a stereo slide viewer with right and left prism that inverts the upside down image on the projection lens, the focus plate, and the focus plate, and the optical system of the right and left lenses, and the stereo slide viewer is located at the same position of the left and right focus plates. Displaying the same collimation pattern, and providing a projection magnification adjusting mechanism of the image on the focus plate, a gap adjusting mechanism of the focus plate, and a linkage mechanism between the projection magnification adjusting mechanism and the gap adjusting mechanism, and projecting magnification ratio by the linkage mechanism described above. The mask width guide device of the stereo slide mound which is formed so as to coincide with the outer edge of the left and right focus plates and the outer edge of the projection screen, and the relative position of the collimation pattern and the projection screen varies in conjunction with the projection magnification and the The collimation pattern of the focus plate is a pattern including several vertical lines or several vertical lines. To provide a mask width of a guide device for a stereo seurayideu mound.

Best Mode for Carrying Out the Invention Embodiments of the present invention will now be described in detail with reference to FIGS. 1 to 9.

FIG. 1 shows the stereo slide mound of claim 1, the basic configuration of which is the same as the stereo slide mound shown in FIG. The stereo slide mound is constituted by the base frame 21 of (a) and the cover frame 22 of (b) (c) (d) formed by injection molding of resin, and the windows 23L, 23R, 24L, 24R) are installed.

The pitches P ₃ of the left and right windows 23L and 23R of the base frame 21 are set to approximately 63.5 mm around the pitch of both eyes of the human, and the vertical and horizontal sizes of the windows 23L and 23R are sliding. It is the same or slightly larger as the screen size of the film F, and the whole screen of the film F is seen.

In the base frame 21, circumferential positioning pins 25 engaged with perforations of the slide film F are symmetrically placed in four positions in the upper, lower, left, and right sides of the window, and the base frame 21 is provided in the cover frame 22. A hole 26 is formed at a position symmetrical with the positioning pin 25.

The positional relationship between the positioning pins 25 and the windows 23L and 23R of the base frame 21 is a screen in a stereo camera configured such that the relative position of the perforation of the film F and the screen are always the same from side to side. When the perforations of the top, bottom, left and right of the slide film F cut every coma are set in the same manner as the positional relationship between the perforations and the four positioning pins 25, the centers of the windows 23L and 23R The centers of the screens of the slide film F coincide with each other.

In addition, the cover frame 22 is formed such that the distance between the left and right windows 24L and 24R and the window width are the same as the window interval C ₁ window 23L and 23R and the window width W ₀ of the base frame 21. From (# 0), the (C ₁ ) of the window is the same, and the plurality of kinds of (W1, # 2, # 3, (Actually, the width change of the window per step is small but is exaggerated in FIG. 1). Therefore, the stereo slide is performed by the number of the cover frame 22 bonded to the base frame 21. The shielding areas on the left and right sides of can be changed in stages, and stereo slides of the shielding area according to the shooting distance of the subject can be created.

Moreover, the hinge 22a which is thin in the longitudinal direction is formed in the left and right center of the cover frame 22, and the cover frame 22 can be folded in the center. As shown in FIG. 2, the left film F of the stereo slide is mounted on the left window 23L of the base frame 21, and the positioning pin 25 is overlapped with the left part of the cover frame 22 folded at the center. ) And the hole 26, and then the right slide is mounted on the right side window 23R of the base frame 21, and the right side of the cover frame 22 is overlapped and fitted to fit the base frame 21 and the cover frame. (22) is joined.

When mounting the stereo slide, the optimum cover frame 22 can be objectively selected by using the mask amount guide device of claim 4. As shown in FIG. 3, the mask amount guide device 31 has a plurality of types of cover frames 22 (# 0, # 1, # 2, # 3, ) Frame of the same shape (# 0, # 1, # 2, # 3, The transparent film 34 is attached to the window 33, and the same collimation pattern 35 is printed or developed on the left and right transparent films 34 at the same position. The collimation pattern 35 has a width W ₀ , W ₁ , W ₂ , W ₃ , Regardless of), auxiliary patterns such as circular patterns and horizontal lines in the center of the screen are added, and the number of vertical lines, the presence or absence of auxiliary patterns, or the shape is particularly limited. It is not.

These mask amount guide devices 31 (# 0, # 1, # 2, # 3, ) Is fixed to the base frame 21 alone or in both eyes with a stereo slide viewer, and the mask amount guide device of any number can be used for the left and right collimation patterns 35 by the aiming action of the human visual system. ), The time axis is adjusted to coincide with, and it looks like FIG. 4 (a). However, if, for example, a stereo slide photographing a near-field subject is attached to the base frame 21 and the mask amount guide device 31 of # 0 is overlaid on the subject, the subject and the collimation pattern 35 are left and right due to parallax. The collimation patterns 35 of are crossed as shown in FIG. 4 (b). In this case, if the mask amount guide device 31 is changed to the one with the larger number, then the left and right collimation patterns together with the subject image when the mask amount guide device with the appropriate window width is mounted. (35) coincides with each other, as shown in FIG.

Then, if the width of the window is changed to the first step of the narrow mask amount guide device, all the subjects are located in the collimation pattern 35 so that the stereo slide adjusted in this step may be the easiest to see, but the cover frame 22 It is up to you to decide whether the number of) will be between this step and the previous step.

When the number of the cover frame 22 is determined, the mask amount guide device 31 is removed from the base frame 21, and the cover frame 22 having the determined number is fitted to the base frame 21 to finish the mounding operation.

5 shows the framing mask 41 of the stereo slide mound according to claim 2, wherein a semicircular cutout 41a corresponding to the perforation of the slide film is formed by punching out a window on a light-shielding material such as paper or a black resin film. ) Is installed in four places of top, bottom, left and right. As with the cover frame 22 described above, the framing mask 41 has a plurality of types (# 1, # 2, # 3, There is).

The relative position of one longitudinal side of the window 42 of each framing mask 41 and the semicircular cutout 41a is the same as the positional relationship between the screen longitudinal side of the slide film and perforation.

When masking the screen with the framing mask 41, the number of the framing masks 41 to be used by the above-described mask amount guide device 31 is determined, and as shown in FIG. The framing mask 41 is positioned so that the outside of the left slide film F is shielded, and overlaps the slide film F. Then, when the cover frame 22 of # 0 is fitted to the base frame 21, the slide film F and the framing mask 41 are sandwiched. Subsequently, the slide film F on the right side is similarly shielded on the outside by the framing mask 41, and the cover frame 22 is fitted to the base frame 21 to assemble the stereo slide mound.

In addition, when using the framing mask 41, what is necessary is just to prepare one type of cover frame 22 (# 0) with the largest width of a window, and it is not necessary to prepare a plurality of types of cover frames. 7 shows another embodiment of the framing mask, in which round holes 44 are formed in four corners of the framing mask 43 as means for engaging the positioning pins 25 of the base frame 21.

8 and 9 show the mask amount guide device 51 according to claim 6, and as shown in FIG. 8, the slide guide table 52, the stereo slide holder 53, a pair of left and right projection lenses A pair of focus plate holders 57 on the left and right are mounted on the dispensing screw 56 provided in the left and right directions on the front side of the lens holder 55, and the lens holder 55 having the 54 attached thereto is movable. Is installed. In the focusing plate 58 mounted on the focusing plate holder 57, as shown in FIG. 9, a collimation pattern mainly composed of vertical lines similar to the mask amount guide device 31 (# 1) of FIG. (59) is provided.

As shown in FIG. 8, the upright prism 60 is fixed to the front end of the slide guide table 52 against the focus plate holder 57, and the eyepiece is attached to the upright prism 60. 61 is mounted. In addition, a semicircular reflecting plate 62 is fixed to the rear end of the slide guide table 52, and an illumination bulb 63 is installed in the inner space of the slide guide table 52 to uniformly rear the rear surface of the stereo slide mound mounted on the stereo slide holder 53. It is configured to illuminate.

The center of the screen of the stereo slide mound loaded in the stereo slide holder 53 and each of the left and right optical axes through the transparent lens 54 and the straightening prism 60 are infinitely parallel and set in parallel with the disparity of the stereo slide holder. The 53 and the lens holder 55 are made of sliding materials in the optical axis direction.

The feeding screw 56 for moving the focusing plate holder 57 has the left and the right screwing left and the right handing the right feeding screw 56, thereby rotating the adjusting knob 64 mounted at the end of the feeding screw 56. Reference numeral 57 may be adjusted to fall in or out of a direction orthogonal to the optical axis, and to adjust the interval in a predetermined range in a direction away from the position where the center of the focusing plate 58 coincides with the optical axis.

In addition, two cam plates 65 and 66 are mounted on the intermediate portion of the delivery screw 56 to separately move the stereo slide holder 53 and the lens holder 55 back and forth. The driven slide rods 67 and 68 are fixed to the stereo slide holder 53 and the lens holder 55 in the direction of the cam plates 65 and 66, respectively, and are attached to the tension springs 69 and 70. The driven darved rods 67 and 68 are pressed against the cam plates 65 and 66 by sticking. Therefore, by rotating the adjusting knob 64 of the delivery screw 56, the stereo slide holder 53 and the lens holder 55 are interlocked by the rotation of the cam plates 65 and 66, and the front position of the image magnification 1: 1 and Move back and forth in range with rear magnified projection position. The projection image of the focusing plate 58 is created in a shape that always maintains the focused state within the moving range of the stereo slide holder 53 and the lens holder 55 of the two cam plates 65 and 66. The projection screen can be enlarged at any magnification.

When the stereo slide holder 53 and the lens holder 55 are moved in the direction in which the projection screen is enlarged, the focus plate holder 57 is interlocked, and the distance thereof is enlarged, and the projection screen is moved by the screen frame of the focus plate 58. The inside of is masked. The upside down image on the focusing plate 58 is inverted up and down by the upright prism 60, so that the screens observed through the eyepiece 61 of the upright prism 60 are respectively masked on the outside from left and right. It becomes.

If the actual screen width of the stereo slide and the screen width of the focusing plate 58 are 30 mm, for example, when the screen of the slide is enlarged and projected to 30/29, the width of the projection screen is 30 × 30/29 = 31,034 ( Mm), and the difference with the screen width of 30 mm of the focusing plate 58 is 31,034-30 = 1,034 (mm). Therefore, if the focusing plate 58 is in the initial position shown in FIG. 8, the enlarged projection screen exceeds 1,034 / 2 = 0.517 (mm) to the left and right of the focusing plate 58, respectively.

In this mask amount guide device 51, when the projection magnification is 30/29, the pitch of the delivery screw 56 is set so that the left and right focus plate holders 57 are shifted 0.517 mm outward, respectively. 60, the inner vertical side of the screen area of each focusing plate 58 and the inner vertical side of the slide projection image coincide with each other.

Then, the projection screen exceeding the outside of the screen of the focusing plate 58 is masked, and a window width of 29 mm is attached to the base frame 21 in the mask amount guide device 31 shown in FIG. The shielding ratio is the same as that of a stereo slide viewer for viewing a 1 mm mask on the outside of the film screen.

In this way, despite the projection magnification, the inner edge portion of the focus plate 58 and the inner edge of the slide projection screen are seen to be identical, so that the outer shielding area of the screen can be continuously changed. As the projection magnification is enlarged, the collimation pattern moves relatively inward with respect to the left and right projection screens, and the collimation pattern is changed in the same way as when the mask amount guide device 31 shown in FIG. Perspective sensations in stereoscopic images change.

As shown in FIG. 8, the dial 71 of the adjusting knob 64 of the delivery screw 56 has a number (# 0, # 1, # 2, # 3, The same number is written in the rotational position of the screen shielding rate which is symmetrical with). Therefore, turning the adjustment knob 64 while viewing the image three-dimensionally through the eyepiece 61 of the upright prism 60, and is the subject of a near view almost the same as the forward and backward position of the collimation pattern 59 of the focus plate 58? Alternatively, when the state of the collimation pattern 59 is seen, the optimal number of the cover frame 22 or the framing mask 41 is recognized by looking at the number of the dial 71.

In addition, as a linkage mechanism of the stereo slide holder 53, the lens holder 55, and the focus plate holder 57, each movable part is driven by a servo motor instead of the illustrated manual type, and each movable part is electrically or A magnetic or optical position sensor may be provided to provide feedback control by the position control unit. In addition, the structure of each part can be variously changed in the technical scope of this invention, and it is natural that this invention is changed by these changes.

As described above, the stereo slide mount according to the present invention sets the stereo slide at a predetermined position of the base frame, and then mounts the cover frame to complete the mount operation, and it is extremely easy to mount since the positioning and bonding of the stereo slide is unnecessary. .

In addition, since the left and right sides of the cover frame are freely foldable in the center, workability when mounting stereo slides is extremely good.

And by using the mask amount guide device of the present invention, even a stereo slide photographed by any type of stereo camera can objectively recognize the screen mask amount for achieving the best stereo effect, and cover frame or framing mask of the corresponding mask amount. With this, the parallax correction of the subject can be corrected and the loss of the screen can be suppressed to the minimum as necessary.

As described above, the stereo slide mound and mask amount guide device of the present invention can solve the trouble and inaccuracy of the conventional stereo slide mound operation, and can fully exhibit the visual effect of the stereo picture, thereby contributing to the spread and promotion of the stereo picture.

Claims (10)

A stereo slide mound that mounts a stereo slide taken by a stereo camera where perforations of perforated film and the relative position of a pair of left and right shots are the same. A positioning pin configured by the frame and engaging the perforations of the slide film to be fixed to the film mounting surface of the base frame to fit the screens of the two slides to the windows, and the film pressing surface of the cover frame. A stereo slide mount having a hole corresponding to the positioning pin at a position thereof to join the positioning pin and the hole to join the base frame and the cover frame, wherein the width between the left and right windows of the cover frame is equal to the base. It is the same as the width between the windows of the frame, and the window width is the screen width of the film A stereo slide mound, characterized in that a plurality of kinds of cover frames are sequentially reduced, and the cover frames are selected and bonded to the base frame to adjust the shielding areas on the left and right sides of the stereo slide film. A stereo slide mound that mounts stereo slides shot with a stereo camera where perforations of perforated film and the relative position of a pair of left and right shots are the same, respectively. A base frame and a cover frame, each having two spherical windows. And a positioning pin that engages the perforations of the slide film to be fixed to the film mounting surface of the base frame described above and fits the screens of the two slide films onto the window, respectively, and covers the cover frame with the film pressing surface. A stereo slide mount in which a hole corresponding to the positioning pin is formed in the hole, and the base pin and the cover frame are joined by interposing the positioning pin and the hole, and having a shape corresponding to one slide film of 1 coma in the center. There is a spherical window, which is located on the positioning pin of the base frame. A framing mask having a locking hole, wherein the positional relationship between the locking hole and one longitudinal side of the window is the same as the positional relationship between the vertical side of the screen of the stereo slide film and the perforation, and the width of the window is the screen of the slide film. Shielding on the left and right sides of the stereo slide film by creating a plurality of types of framing masks that are sequentially reduced in width, selecting the framing mask and overlaid on the slide film on the base frame, and fitting the cover frame to the base frame. Stereo slide mound characterized by the area can be adjusted. The stereo slide mound according to claim 1, wherein hinges are formed at left and right center portions of the cover frame to form a bent material. The transparent film or transparent glass is attached to the window of the several types of frames of the same shape as each of said cover frames of the several types of window width, respectively, and the same position is attached to the same position of the left and right windows. A mask amount guide device for a stereo slide mound characterized by displaying a market pattern. The apparatus of claim 4, wherein the collimation pattern is a pattern including a plurality of vertical lines or a plurality of vertical lines. A stereo slide viewer having two projection systems, a right-hand prism that inverts a line image on the focusing plate and an inverted image on the focusing plate, and an optical system of right and left lenses, and the same collimation pattern is applied at the same position of the left and right focusing plates. And a linkage mechanism between the projection magnification adjustment mechanism of the image on the focus plate, the gap adjustment mechanism of the focus plate, the projection magnification adjustment mechanism and the gap adjustment mechanism, and the linkage mechanism irrespective of the projection magnification ratio. A stereo slide mound mask width guide device formed so as to coincide with the outer edge of the left and right focal plates and the outer edge of the projection screen, and the relative position of the collimation pattern and the projection screen varies in conjunction with the soil enlargement ratio. The apparatus of claim 6, wherein the collimation pattern of the focus plate is a pattern including several vertical lines or several vertical lines. The stereo slide mound according to claim 2, wherein hinges are formed at left and right center portions of the cover frame to form a bent material. The method of claim 2, wherein a transparent film or a transparent glass is attached to each of the window frames of the same shape as each of the cover frames of the plurality of window widths described above, and the same market pattern is displayed at the same position of the left and right windows. Mask amount guide device used in the stereo slide mound characterized in that. 7. The mask slide guide device of claim 6, wherein the collimation pattern is a pattern including a plurality of vertical lines or a plurality of vertical lines.