JPH0569344B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a TV viewer that images a slide, strip-shaped negative or positive film, or print with a TV (television) camera and visualizes it on a monitor television.

"Prior Art and its Problems" A conventional slide projector projects a positive image slide onto a screen. Slides are made by cutting developed reversal (positive) film one frame at a time and fixing them in a frame.
However, since it is difficult to optically invert a negative to a positive using a slide projector, negative film could only be projected in its negative state. However, the film used by the majority of general consumers in camera photography is not reversal film for slides, but negative film for printing. Therefore, in order to view the negative film image on a screen, a separate slide had to be created.

Furthermore, this type of slide projector requires hanging the screen and darkening the room, making it cumbersome to use.

``Object of the Invention'' The present invention has been made in view of the above-mentioned problems of the prior art. The aim is to get no TV viewers.

"Summary of the Invention" The present invention provides a light source and an imaging device that are arranged opposite each other at a predetermined interval, and a film holding surface and a film holding surface that are provided at different positions in the optical axis direction on the same optical axis between the light source and the imaging device. A slide holding surface, a film feeding mechanism that feeds the film to the film holding surface, a slide feeding mechanism that feeds the slide to the slide holding surface, a pressing means that presses the film fed to the film holding surface against the film holding surface, and a slide. A pressing means for pressing the slide sent to the holding surface against the slide holding surface is provided movably between the film holding surface, the slide holding surface, and the imaging device, and is capable of moving forward and backward from the film holding surface to the imaging device and the slide holding surface. and an optical element that equalizes the optical distance from the camera to the imaging device, and the imaging device outputs an image of the film or slide held on the film holding surface or the slide holding surface to a monitor TV. .

“Embodiments of the invention” The present invention will be explained below based on illustrated embodiments.

FIG. 1 is a perspective view showing the internal structure of an embodiment of the TV viewer of the present invention, FIG. 2 is a perspective view showing the external appearance of the same embodiment, and FIG. 3 is a plan view showing the internal structure of the same embodiment. be.

In this TV viewer, a light source 20 and an imaging device 24 are arranged opposite each other with a distance greater than the focusing distance of a photographing lens 26 of the imaging device 24. Near the light source 20, a white diffuser-transmitting plate 22 is erected perpendicularly to the optical axis of the photographing lens 26. An image sensor (for example, a CCD), not shown, is provided in the image sensor 24, and the photographing lens 26 forms an image on this image sensor. This image sensor is rotatably provided around an optical axis, and is rotated via a rotational drive mechanism 28 consisting of a motor and a reduction gear train. In other words, it is possible to not only switch between vertical and horizontal positions, but also adjust to any angle such as reverse rotation. Further, this imaging device 24 can electrically invert a negative or positive image to produce a desired positive or negative image.

A film feed mechanism 30 and a slide feed mechanism 60 are provided between the light source 20 and the imaging device 24. FIG. 2 shows these assembled into a case 10. The details will be described later, but 11 is a slide case insertion slot, 12 is a film insertion slot, 13 is an eject button, 14 is a power switch, 15 is a frame return button, 16 is a frame advance button, 1
7 is a framing adjustment knob, and 18 is a vertical/horizontal position switching lever that controls the rotation drive mechanism 28. Reference numeral 19 denotes a monitor TV that displays images taken by the imaging device 24. As the monitor TV 19, a television used in general homes can be used.

The film feeding mechanism 30 includes a vertically elongated film insertion opening 32, an introduction guide 33 that extends substantially parallel to the optical axis, a holding guide 35 that extends perpendicularly to the optical axis, and both guides 3 that are perpendicular to each other.
It has a film member consisting of a curved guide 34 that smoothly connects 3 and 35. The insertion opening 32 and the guides 33, 34, 35 are formed to hold and guide the film F in an upright position.
is fitted into the film insertion opening 12 of the case so as to be vertically movable. The upper and lower guides 33 and 35 have a U-shaped cross section that surrounds the perforation portions on both sides of the film F. An aperture 36 of the same shape is opened (see FIG. 8). The surface of this aperture 36 on the light source 20 side becomes a film holding surface.

The introduction guide 33 is connected to the insertion port 32, and the holding guide 35 is attached to the support base 37 so as to be movable in a direction perpendicular to the optical axis.
The holding guide 35 is a curved guide 3 that bends elastically.
connected by 4. Furthermore, the holding guide 35 is slightly moved left and right via a horizontal framing motor 38 and a speed reduction device attached to the support base 37 (see FIG. 3).

In addition, the film guides 33, 34, 35 have
A driving roller 39 and a driven roller 40 are provided on the introduction guide 33 near the insertion opening 32 so as to sandwich the perforation of the film F on the film movement trajectory, and a driving roller 41, a driven roller 42, and A driving roller 43 and a driven roller 44 are provided. On the shaft of each drive roller 39, 41, 43, there is a pulley 39a (see FIG. 1) that rotates integrally with the shaft, respectively.
a, 43a (see FIG. 8) are fixed.

A film feed motor 45 is attached to the support base 37 near the drive roller 39, and two pulleys 45a and 45b are fixed to its rotating shaft.
Further, on the support base 37, a tension arm 46 is rotatably mounted around the rotation axis of the film feed motor 45.
is provided, and two pulleys 46a and 46b are integrally and rotatably attached to the tip of the tension arm 46.

A belt 47 is stretched in parallel between the pulley 45a of the film feed motor 45 and the pulley 39a of the drive roller 39, and
A belt 48 is hung in parallel between it and a. Pulleys 41a, 43 of drive rollers 41, 43
A belt 49 is wrapped around a, and this belt 49 is also wrapped around a pulley 46b. Therefore, the drive rollers 39, 41, and 43 are simultaneously driven to rotate in the same direction by the film feed motor 45, and press the barfration portion of the film F between themselves and the driven rollers 40, 42, and 44, respectively, and thereby F is moved along the film guides 33, 34, and 35. Note that the tension arm 46 is attached to the belt 49.
The tension spring 46a rotates in the direction in which the tension is maintained at all times.

Inside the film insertion opening 32, as shown in FIGS. 10 and 11, there is a film insertion detection switch 50 consisting of a movable contact 50a and a fixed contact 50b, which face each other across the running surface of the film F and are in constant contact with each other. It is provided.

As shown in FIGS. 13 and 14, below the aperture 36, a leading edge detection switch 51 for detecting the leading edge of the film F and a trailing edge detection switch 52 for detecting the trailing edge of the film F are provided. These detection switches 51 and 52 have movable contacts 51a and 52a and fixed contacts 51 and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 51a and 52a and 52a and 52a and 52a and 51a and 52a and 52a and 52a and 52a and 52a and 52a and 52a and 52a and 52a, respectively, and 51a 52a, and 52b, which are opposite to each other with the running surface of the film F sandwiched therebetween, at the left and right ends of the averture 36, respectively.
b, 52b, and these contacts 51a, 51b
Whether the film F intervened between the contact points 51a and 51b or between the contact points 51a and 52b (that is, the contact points 51a and 51b,
The film insertion detection switch 50 is turned off/on depending on whether or not a and 52b are electrically connected.In principle, the film insertion detection switch 50 is the same. Further, these contacts are formed in positions and sizes that do not fit into the perflation of the film. film detection switch 51,
The movable contacts 51a and 52a of 52 simultaneously function as pressing members that press the film F against the film holding surface.
6 in the optical axis direction. aperture 36
The film holding surface (the surface on the diffuser-transmitting plate 22 side) is
Almost film F than the focal position of the photographic lens 26
The image plane of the film F is the focal position of the photographic lens 26, that is, the film imaging surface. The rear surface of the aperture 36 constitutes a slide holding surface 53 that holds a slide S, which will be described later. Note that the size of the diffuse transmission plate 22 is determined by the aperture 36 depending on the imaging device 24.
The size is such that the entire surface of the film F can be uniformly illuminated when the film F inside is imaged.

The support base 37 is screwed into and supported by a screw screw 54 rotatably attached to the body. A pinion gear 55 is fixed to the tip of this screw screw 54, and this pinion gear 55 is connected to a vertical framing motor 56 attached to the body.
The pinion gear 57 is engaged with the pinion gear 57. Therefore, when the vertical framing motor 56 rotates, the screw screw 5
4 rotates, and the support base 37 moves up and down. The support base 37 is supported by a guide pipe (not shown) installed in the body so as to move up and down in parallel.

Next, the operation of the film feeding mechanism 30 will be explained. The film F is inserted into the insertion port 32, and the film F connects the movable contact 50a and the fixed contact 50.
If you enter between the two and separate them (11th
(see figure), the film insertion detection switch 50 is turned off, and the film feed motor 45 is started. When the film feed motor 45 is started, the drive rollers 39, 41, and 43 are rotated via the belt transmission mechanism, and the film F, which is held between the drive roller 39 and the driven roller 40, is moved to the introduction guide 33 and the bending guide 3.
4 will be sent along.

The leading edge of the film F passes through the trailing edge detection switch 52 and contacts 51a and 51b of the leading edge detection switch 51.
13), the film feed motor 45 stops, and the film F stops at the position where the first frame of the film F is aligned with the aperture 36. At this point, the light source 20 lights up and the monitor TV
The image of film F is projected on 19.

Thereafter, each time the frame advance button 16 is pressed, the film advance motor 45 rotates in the forward direction to advance the film F by one frame, and each time the frame return button 15 is pressed once, the film advance motor 45 rotates in the reverse direction to advance the film F by one frame. F is moved back by one frame. During this frame-by-frame forwarding operation, no video from the imaging device 24 is sent to the monitor TV 19. Further, when the film F is fed frame by frame and passes through the film trailing edge detection switch 52 and is turned on (see FIG. 14), the film feed motor 45 stops and no longer rotates in the feeding direction.

When the photographing is finished and the film is to be returned, the eject button 13 is pressed. Then, the light source 20 goes out, the monitor TV 19 goes out, and the film advance motor 4 turns off.
5 is reversely rotated, the film F is fed out from the insertion opening 32, and the rotation continues until the film insertion detection switch 50 is turned on. Film insertion detection, leading edge detection, trailing edge detection, and control of the film feed motor 45 are performed by a control circuit made up of the three switches 50, 51, and 52.

Next, the slide feeding mechanism 60 will be explained. The slide feeding mechanism 60 has a slide case 61 in which an arbitrary number of slides S can be erected in parallel at predetermined intervals. The slide case 61 is inserted into the slide case insertion opening 11 provided outside the film insertion opening 32. Then, it is guided along guide rails 62, 62 provided parallel to the optical axis, and is moved back and forth by a case feeding mechanism (not shown).

On the photographing lens 26 side of the holding guide 35, there is a slide guide plate 63 extending in a direction perpendicular to the optical axis.
64 are provided. This slide guide plate 6
3 and 64 have windows 63a and 6 larger than the outer shape of the slide S in the portion facing the aperture 36.
4a is open.

A first sliding plate 65 and a second sliding plate 70 are provided above the slide guide plates 63 and 64 and extend in parallel thereto. These first and second sliding plates 6
5, 70 are guide pins 66 implanted at both ends,
66, 71, and 71 are fitted into elongated holes (not shown) formed in the body, and are slidably guided in a direction orthogonal to the optical axis by their fitting relationship.

A gripping arm 67 is attached to the lower surface of the left end of the first sliding plate 65 for gripping the slide S placed on the slide case 61 from the left and right sides, and a tension spring tensioned between the right end and the body. 68, it is constantly urged to move rightward.

A rack 72 is formed on the rear green portion of the second sliding plate 70 (the edge on the side of the photographic lens 26). A pinion gear 74 of a slide feed motor 73 attached to the support base 37 is engaged with the rack 72.

Further, a downward bent portion 6 is provided at the left end of the first sliding plate 65.
9 is formed, and this bent portion 69 forms a second sliding plate 70.
is in contact with the left edge of Therefore, when the slide feed motor 73 rotates, the second sliding plate 70 moves to the right. Along with this, the first sliding plate 65 is moved to the right by the tension spring 68, and the right end surface comes into contact with a stopper pin 75 implanted in the body and stops. At this time, the slide S gripped by the slide gripping arm 67 is attached to the slide guide plate 63,
64 to a position aligned with the windows 63a and 64a.

On the right side of the windows 63a and 64a, there is a U-shaped slide lever 8 on the front that holds the windows 63a and 64a up and down.
0 is the vertical shaft 80a implanted in the support base 37
It is rotatably attached to. The upper and lower levers of this slide control lever 80 are spaced apart slightly wider than the width of the film F, and have two forks 81a and 81b at their tips. The slide S can enter between the forked parts 81a and 81b, and its peripheral edge abuts on the forked parts 81a and 81b. Further, the eject lever 80 is always biased to rotate clockwise by a torsion spring 82 fitted to the vertical shaft 80a.

The second sliding plate 70 includes the first and second sliding plates 65 and 7.
When moving to the right at 0, the first sliding plate 65 moves to the right even after stopping, and the cam surface 76 pushes away the pin 83 of the slide eject lever 80 to rotate the slide eject lever 80 to the left. Then, the lever 81b comes into contact with the slide S, removes the slide S from the slide gripping arm 67, and brings it into contact with the slide holding surface 53 on the back surface of the aperture 36. That is, this lever 81b is a pressing member that presses the slide S against the slide holding surface 53. This situation is shown in FIGS. 15 to 17.

Next, the operation of the slide feeding mechanism 60 will be explained. First, the slide case 61 containing the slide S is inserted into the slide case insertion slot 11 and set, and the frame advance button 16 is pressed. Then,
The slide feed motor 73 rotates, the first and second sliding plates 65 and 70 move to the right, the slide S is loaded on the slide holding surface 53, the light source 20 is turned on, and the image of the slide S is displayed on the monitor TV 19. It is projected.

To return the slide S, press the frame return button 15. Then, the slide feed motor 73 rotates in reverse, and the second sliding plate 70 moves to the left, returning to the initial position along with the first sliding plate 65 along the way.
During this movement, the cam surface 76 separates from the pin 83 at the initial stage of movement of the second sliding plate 70. Therefore, the slide extractor lever 80 is rotated to the right by the rotation urging force of the torsion spring 82, and the lever 81a moves the slide S on the slide holding surface 53 to the slide gripping arm 67 and grips it. Thereby, this slide S is returned to the slide case 61 by the first sliding plate 65. When the slide S is not on the slide holding surface 53, no video from the imaging device 24 is sent to the monitor TV 19.

Next, when the frame feed button 16 is pressed, a case feed mechanism (not shown) is activated to move the slide case 61 forward by one slide, and the slide feed motor 73 rotates to load the next slide S onto the slide holding surface 53. .

Further, the distances from the photographing lens 26 are different between the slide S and the slide F on the holding surface. Therefore,
A parallel flat glass 77 (Fig. 1,
3) is attached at right angles to the optical axis, and when the second sliding plate 70 moves to the left end, the aperture 36
It is configured to enter between the lens and the photographic lens 26. As a result, the optical distances of the slide S and the film F on the holding surface from the photographing lens 26 become equal.

The thickness d of the flat glass 77 is determined as follows: d=ln/(n-1), where l is the distance between the film surface and the slide surface shown in FIG. 12, and n is the refractive index of the flat glass 77.

Next, the framing operation of the film F and the slide S will be explained. Framing in the vertical direction is performed by rotating the screw screw 54 by the vertical framing motor 56 and moving the holding guide 35 up and down together with the support base 37. This situation is shown in FIGS. 8 and 9. Framing in the left and right direction is done by the horizontal framing motor 38.
This is done by moving the holding guide 35 in the left and right direction. In this case, the introduction guide 33 swings about the insertion port 32 as a fulcrum, and the curved guide 33 curves to follow. The situation is shown in FIGS. 5 and 6.

This operation is performed using the single framing adjustment knob 1.
It can be done in 7. Further, as a result of this movement, the film F and the slide S move vertically and horizontally together with the holding guide 35, so that the framing adjustment is common to both. Figures 8 and 9 show the state when vertical framing is performed.
At this time, the slide adjuster lever 80 does not move vertically or horizontally.

In this manner, in this embodiment, any one of positive film, negative film, and slides can be easily viewed on a monitor TV. The operation is also very easy since the film or slide is automatically loaded by the respective feeding mechanisms 30 and 60. Moreover, the framing was done while watching the TV19 monitor.
This can be done by operating the book framing adjustment knob 17.

In the explanation of this embodiment, it is assumed that a film processed at a general DPE store and cut into every 6 frames is used, but it is of course possible to use a long film that is not cut.
The film feeding mechanism 30 may be ejected by providing a discharge port at the tip of the holding guide 35 and feeding the film F from the discharge port. Also,
If the photographing lens 26 is a zoom lens, close-up can be freely performed.

"Effects of the Invention" As described above, according to the TV viewer of the present invention,
When the film is sent to the film holding surface, the film is pressed against the film holding surface by the corresponding pressing means, and when the slide is sent to the slide holding surface, the slide is pressed against the slide holding surface by the corresponding pressing means. . An optical element is provided between the imaging device and the film holding surface and the slide holding surface to equalize the optical distances from the film holding surface to the imaging device and from the slide holding surface to the imaging device. When changing from a state of imaging to a state of imaging a slide, and vice versa, a TV image in correct focus can be obtained without the need for refocusing.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the internal structure of an embodiment of the TV viewer of the present invention, Fig. 2 is a perspective view showing the external appearance of the same embodiment, and Figs. 3 and 4 show the internal structure of the same embodiment. Plan views shown in different states, No. 5
Fig. 6 and Fig. 6 show the internal structure of the same embodiment with left and right framing, Fig. 7 is a side view showing the main parts of the same internal structure, and Figs. 8 and 9 show the main parts of the same internal structure with top and bottom framing. 10 and 11 are longitudinal sectional views showing the structure of the film insertion detection switch, and FIGS. 12, 13, and 14 are
The figure is a cross-sectional view showing the structure of the rear end of the film and the starting edge detection switch, and FIGS. 15, 16, and 17 are cross-sectional views showing the slide loading and ejecting mechanisms. 10...Case, 11...Slide case insertion slot,
12...Film insertion slot, 13...Eject button, 1
4...Power switch, 15...Frame forward button, 16...Frame return button, 17...Framing adjustment knob, 18
...Vertical/horizontal position switching button, 19...Monitor TV, 2
0... Light source, 22... Diffusion plate, 24... Imaging device, 26
...Photographing lens, 28...Rotary drive mechanism, 30...Film feeder, 32...Film insertion slot, 33...Introduction guide, 34...Curving guide, 35...Holding guide, 36...Aperture, 37...Support base, 38
...Horizontal framing motor, 39, 41, 43... Drive roller, 40, 42, 44... Driven roller, 45
...Film feed motor, 50...Film insertion detection switch, 51...Film leading edge detection switch, 5
2... Film trailing edge detection switch, 53... Slide holding surface, 54... Screw screw, 56... Vertical framing motor, 60... Slide feeding device, 61...
Slide case, 65...First slide plate, 64...
Slide gripping arm, 70...Second slide plate, 7
3...Slide feed motor, 77...Flat glass, 8
0...Ijiekutoreba.

Claims (1)

[Claims] 1. A light source and an imaging device arranged oppositely at a predetermined interval; A film holding surface and a slide holder provided between the light source and the imaging device at different positions in the optical axis direction on the same optical axis. a film feeding mechanism that feeds the film to the film holding surface; a slide feeding mechanism that feeds the slide to the slide holding surface; a pressing means that presses the film fed to the film holding surface against the film holding surface; a slide holding surface; a pressing means for pressing the slide sent to the slide holding surface against the slide holding surface; provided movably between the film holding surface and the slide holding surface and the imaging device; and an optical element that equalizes the optical distance from the image pickup device to the image pickup device, wherein the image pickup device outputs an image of a film or slide held on a film holding surface or a slide holding surface to a monitor TV. 2. The TV viewer according to claim 1, comprising a mechanism for framing by moving the film holding surface and the slide holding surface vertically and horizontally. 3. A TV viewer according to claim 1, wherein the optical element is a parallel flat glass. 4. In claim 3, the film holding surface is arranged closer to the photographing device than the slide holding surface, and the slide feeding device moves the parallel flat glass,
The TV viewer is inserted between the slide holding surface and the imaging device in the slide imaging state, and is moved back in the film imaging state.