JPH095883A - Film projector - Google Patents

Abstract

PURPOSE: To eliminate the troublesome work and operation of a viewer, to freely turn the top downward by a simple operation and to realize appreciation in a quiet and excellent atomosphere. CONSTITUTION: By an electric contact point 9, it is detected whether a cartridge 1 is loaded or not. Then, a film 2 is fed out by the rotation of a feeding-out motor 5 and a photographed picture is moved to a projection optical path in operation with the detecting action of the leading edge of a frame. Besides, a focusing action is executed by moving an optical lens system 12 in an optical axis direction together with a lens supporting member 13 by the rotation of a motor for driving a lens 14. By the rotation of a motor for reversal driving 20, a reversal optical member 18 is moved to a position where it is faced to an optical axis together with a reversal supporting member 19. Then, the photographed picture is rotated by 180 deg. with respect to the optical axis and projected on the surface of a screen member 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film projector, and more particularly, to a film projector equipped with a cartridge for winding a film having a magnetic recording portion, for projecting an image of the film onto a projection member surface. Film projector.

[0002]

2. Description of the Related Art Conventionally, as a device for projecting and viewing an image photographed and recorded on a positive type film (reversal film) on a screen, the film is mechanically cut into pieces and each piece is made of cardboard or synthetic resin. A slide projection device using a slide mounted by a frame-shaped mounting member is known. In this device, after setting slides in each slide chamber of the magazine, mount the magazine on the rail part of the device body and move it on the rail part, send the selected slide to the projection optical path, and project it on the screen. It is something that is done. In this slide projection apparatus, since the peripheral portion of the film is reinforced by the mount member for each frame, there is an advantage that the deflection of the film is extremely small and the distortion of the projected image is prevented.

Such a slide projection apparatus will be described with reference to FIG. FIG. 25 shows a conventional slide projection apparatus, (A) is an external perspective view, (B) is a perspective view showing a part of an internal mechanical section, and (C) is a perspective view showing a magazine and a slide. 501 is a slide projection device. Figure 25
As shown in (C), a plurality of slides 502 (other slides are omitted in FIG. 25) are set in the slide chambers 503a of the magazine 503, respectively. After this, FIG.
In the state in which the magazine 503 is laid down sideways as shown in FIG. 5 (A), the rail unit 5 of the internal mechanism unit 504 shown in FIG.
It is attached to 04a. The magazine 503 and the rail portion 504a
Move it up and slide the given slide 502 into the insert 504.
Stop at the position of b, and slide the slide 502 into the insertion part 50.
4b to guide onto the projection optical path in the internal mechanism section 504,
A projection lens is included to project onto the screen from an irradiation port 501a of an irradiation unit.

However, the method using the slide is
There is a drawback that the work for mounting the film for each frame is always required and the cost becomes high. In addition, a space for arranging the magazine must be provided on the device side, and a space for moving the magazine on the rail portion is required at the time of viewing, so that it is possible to answer the space saving demanded further in recent years. It had the drawback of being difficult. Also, when watching, you must select the slides you want to watch and set them in the magazine in the order you want to watch, and if there is more than the storage capacity of the magazine,
It was very troublesome to replace slides or prepare multiple magazines.

If, for example, the top and bottom sides of the slide are mistakenly set in the slide chamber and projected, the top and bottom of the projected image will also be inverted, so that, for example, each time the slide is drawn. Internal outlet 50 shown at 25
4c, take out from the external outlet 501b,
I had to set the slide again with the top and bottom sides in the correct condition. In addition, for a slide of a captured image that was taken as an inverted image by reversing the top and bottom of the subject at the time of shooting for intentional reasons, even if the slide is set correctly, the captured image is an inverted image An inverted image was required, and in order to project it as an erect image, it was necessary to reset the slide. The same was true when intentionally attempting to project and view an upright image of a captured image as an inverted image. In addition, even if you accidentally place the film upside down in the captured image when creating the slide,
Requires reset. In any case, when it was necessary to turn upside down, it was necessary to re-set each time.

Further, at the time of viewing, the image is switched by moving the magazine on the rail portion and moving a predetermined slide on the projection optical path for each frame, so that the machine at the time of movement is changed. The generated sound also has an inconvenience that it reduces the atmosphere of viewing.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to eliminate the troublesome work / operation of an observer and realize a simple operation. In addition, it is to provide a film projector that can be turned upside down freely and can be viewed with a quiet atmosphere.

[0008]

In order to achieve the above object, the film projector of the present invention comprises, in claim 1, a film having a magnetic recording portion having a plurality of photographed image frames on which photographing information is recorded. In a film projector in which a cartridge formed so that the film can be stored once and sent out can be loaded, and a photographed image is projected on a projection member surface, a detection means for detecting whether or not the cartridge is loaded, and a film are sent out. Loading means for moving a predetermined photographed image frame to the projection processing position, focus adjusting means for focusing the projected image projected on the projection member surface, and rotation conversion of the projected image by rotating the photographed image in a predetermined manner. Rotation conversion means, conversion drive means for moving the rotation conversion means between a position facing the projection optical path and a retracted position, and a rotation conversion means. And converting actuation means for actuating the conversion driving means to move to a position facing the unit to the projection light path,
The film guide means is provided for holding the surface of the film and for guiding the running.

According to another aspect of the present invention, in claim 2, the rotation conversion means includes a photographed image 180 degrees with respect to the optical axis.
This is an inverting optical member that is rotated by one degree to invert the top and bottom of the projected image. According to another aspect of the present invention, in claim 3, the rotation conversion means is a rotating optical member that rotates the captured image by 90 degrees with respect to the optical axis to rotate the projected image by 90 degrees. Is.

According to another aspect of the present invention, in claim 4, a film having a magnetic recording portion composed of a plurality of photographed image frames on which photographing information is recorded can be wound and housed, and the film can be sent out. In a film projector in which a formed cartridge is loaded and a captured image is projected on a projection member surface, a detection unit that detects whether or not the cartridge is loaded, and a film is fed to bring a predetermined captured image frame to a projection processing position. The loading means for moving, the focus adjusting means for bringing the projected image projected on the projection member surface into the in-focus state, the rotation converting means for rotating the captured image by a predetermined rotation, and the rotation converting means for projecting the rotation converting means. Conversion drive means for moving between the position facing the optical path and the retracted position, and the light on the film surface arranged on the cartridge side from the projection processing position. Measuring means for measuring over-density, arithmetic processing means for arithmetically processing the result of the measuring means, and a position where the rotation converting means faces the projection optical path when the photographed image is judged to be a predetermined image by the arithmetic processing means. And a film guide member made of a resin material integrally formed with a shielding member arranged between the position where the measuring unit is arranged and the projection processing position. It was done like this.

According to another aspect of the present invention, in claim 5, the rotation conversion means includes a picked-up image 180 degrees with respect to the optical axis.
The predetermined image is an inverted image, which is an inversion optical member that is rotated by one degree to invert the top and bottom of the projected image.
Further, as another means of the present invention, in claim 6, the first ROM means storing the processing information of the light transmission density for judging whether the photographed image is an erect image or an inverted image can be replaced with the film projector main body. In preparation for this, the result of the measuring means is compared and judged by the processing information of the first ROM means to judge whether the photographed image is an erect image or an inverted image.

According to another aspect of the present invention, in claim 7, the rotation converting means is a rotating optical member for rotating the captured image by 90 degrees with respect to the optical axis and rotating the projected image by 90 degrees. The predetermined image is a vertical position image. Further, according to another means of the present invention, in the film projector apparatus main body according to claim 8, the second ROM means in which processing information of light transmission density for determining whether a photographed image is a lateral position image or a longitudinal position image is stored. In order to be replaceable, the result of the measuring means is compared and judged by the processing information of the second ROM means to judge whether the photographed image is a lateral position image or a longitudinal position image.

Another aspect of the present invention is to provide a switching mechanism according to claim 9 in which a predetermined portion of the projection opening is shielded and an optical path blocking portion for blocking a part of the measurement optical path of the measuring means. It is to prepare.

[0014]

The main operation of the present invention is that, in claim 1, the projection drive image is rotationally converted by moving the rotation conversion means to a position facing the projection optical path by the conversion drive means. The film guide means improves the flatness of the film surface.

Another main function of the present invention is that in claim 4, the conversion driving means moves the rotation converting means to a position facing the projection optical path, whereby the projection image is rotationally converted. The measuring means measures the light transmission density of the film surface at a position closer to the cartridge than the projection processing position, the arithmetic processing means performs arithmetic processing on the result of the measuring means, and the arithmetic processing means determines that the photographed image is a predetermined image. If determined, the conversion drive means is operated by the conversion operation means to move the rotation conversion means to a position facing the projection optical path, whereby the rotation conversion of the captured image is automatically performed. The film guide member improves the flatness of the film surface and shields unnecessary light to improve the measurement accuracy of the measuring means.

[0016]

EXAMPLES The film projector of the present invention can be applied to various films. As a preferred example thereof, a case of being applied to a positive type film (reversal film) will be described. .

First Embodiment First, a first embodiment of the film projector to which the present invention is applied will be described with reference to FIGS. First, the main configuration will be schematically described with reference to FIG.
~ The operation will be described with reference to the flowchart of Fig. 7, and the predetermined configuration will be described in detail with reference to Figs. 8 to 16.

FIG. 1 is an exploded perspective view showing a first embodiment of a film projector to which the present invention is applied and showing the main structure. Reference numeral 1 is a cartridge, which is provided with a rotary shaft portion 1a. Reference numeral 2 is a film, and in this embodiment, a perforation portion 2a is formed on the upper portion and a magnetic recording portion 2b is formed on the lower portion, and it has been photographed and developed.
In the magnetic recording unit 2b, predetermined photographing information is magnetically recorded for each frame at the time of photographing, and information for teaching the tip position of the first frame is also recorded. The cartridge 1 is capable of completely storing the film 2 in a wound state so that the film is less likely to be damaged and the rotating shaft portion 1a is rotated in a predetermined direction. By doing so, the film 2 is formed to be sent out. Reference numeral 3 is an optical sensor, which uses a photo interrupter or the like, and is designed to detect light by transmitting or blocking light in the perforation portion 2a. Reference numeral 4 denotes a magnetic head for reading the magnetic information in which the photographing information of the magnetic recording unit 2b is recorded. The magnetic head 4 may also be used as a recording head for recording on the magnetic recording section 2b.

Reference numeral 5 denotes a feed motor capable of rotating in the forward and reverse directions. The film 2 is fed out by the forward rotation, and the film 2 is rewound by the reverse rotation. A first gear 22 to be described later is fitted to the rotary shaft of the feed motor 5, and the gear 22 is adapted to mesh with a second gear 23 to be described later. Further, an engaging portion 24a, which will be described later, is formed on the tip end side of the shaft member into which the second gear 23 is fitted so as to engage with the rotating shaft portion 1a of the cartridge 1. In this way, the conversion transmission means for converting and transmitting the rotation speed, such as the gear train and the clutch means, is arranged. Reference numeral 7 is a winding shaft for winding the film 2 sent out from the cartridge 1. Reference numeral 8 denotes a winding motor, which can be rotated in the forward and reverse directions, rotates the winding shaft 7, and winds the film 2 fed from the cartridge 1 by the winding shaft 7. Reference numeral 9 denotes an electric contact, which includes a fixed contact 9a and a movable contact 9b, and detects whether or not the cartridge 1 is loaded.

Reference numeral 10 is an illumination light source, and what kind of light source means is specifically selected. Reference numeral 11 denotes a light diffusing plate that makes the light emitted from the illumination light source 10 have a substantially uniform light amount, and is appropriately selected in consideration of the illumination light source 10. An optical lens system 12 is composed of a plurality of predetermined lenses. A lens support member 13 supports the optical lens system 12 and is supported on the apparatus main body side so as to be movable in the optical axis direction. The lens support member 13 is shown in FIG.
Although it is shown that the entire optical lens system 12 is moved, actually, the optical lens system 12 and the lens support member 13 are configured so that a predetermined lens of the optical lens system 12 can be moved by a predetermined amount. ing. Lens support member 1
3, a rack gear 13a is formed which is arranged in the movement direction of the lens support member 13 in the optical axis direction.

Reference numeral 14 is a lens driving motor, which can be rotated in the forward and reverse directions, and a gear 15 is fitted to the rotary shaft.
It is adapted to mesh with the rack gear 13a of the lens support member 13. When the lens driving motor 14 rotates,
The lens support member 13 is moved in the optical axis direction by the meshing of the gear 15 and the rack gear 13a, so that the optical lens system 12 is moved in the optical axis direction. Then, for the focus adjustment, distance measurement and calculation processing are performed by the distance measurement device 17 that measures the distance by receiving the reflected light from the screen 16 surface, and the lens drive motor 14 interlocking with the distance measurement device 17 causes the processing result to be obtained. Rotate a predetermined amount based on
This is automatically performed by moving the optical lens system 12 in the optical axis direction by a predetermined amount to bring it into a predetermined position so that the optical lens system 12 is brought into a focused state. In the case of manual operation, the operation is instructed by an external operation switch (not shown) or the like to electrically rotate the lens driving motor 14 while visually confirming the projected image on the screen member 16 surface. .

Reference numeral 18 denotes an inverting optical member,
The film 2 is a prism member that is rotated by 0 degrees and emits light.
The photographed image of is rotated 180 degrees with respect to the optical axis, and the top and bottom of the projected image is inverted. A support member 19 supports the reversal optical member 18, and is supported so as to be movable in a direction crossing the optical axis. The support member 19 is provided with a rack gear 19a arranged in the moving direction of the support member 19. Reference numeral 20 denotes a reversing drive motor, which can rotate in the forward and reverse directions, and a gear 21 is fitted to the rotary shaft so as to mesh with the rack gear 19a of the support member 19. When the reversing drive motor 20 rotates in the normal direction, the support member 19 is moved to the optical axis by the engagement of the gear 21 and the rack gear 19a. Therefore, the reversing optical member 18 is moved to a position facing the projection optical path, and the photographed image of the film 2 is rotated 180 degrees with respect to the optical axis by the reversing optical member 18.
The projection image on the screen 16 surface is turned upside down. That is, when the projected image is an inverted image, it is inverted, and when the projected image is an erect image, it is inverted.

Next, the operation of the first embodiment will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 2 is a main flowchart showing the processing operation of the first embodiment of the film projector to which the present invention is applied. 3 to 7 are flowcharts of a subroutine showing the operation of the first embodiment of the film projector to which the present invention is applied.

First, the operation of the first embodiment of the film projector to which the present invention is applied will be briefly described with reference to the main flowchart of FIG. [1] Power on (S201): Power on the apparatus main body of the film projector to prepare it. [2] Confirmation of presence / absence of cartridge (S202): It is detected whether or not the cartridge is loaded in the cartridge loading portion of the film projector, and the presence / absence of the cartridge is displayed. [3] Film delivery (S203): The film is delivered from the cartridge loaded in the cartridge loading section of the film projector, and the predetermined photographed image frame is moved to the projection processing position in the film projector. [4] Focus adjustment (S204): The focus of the projection image formed by projecting the captured image of the frame at the projection processing position onto the projection member surface is adjusted. [5] Necessity of upside-down (S205): When it is necessary to invert the upside-down of the projected image, the upside-down of the projected image is inverted by the inversion optical member. [6] Appreciation (S206): Appreciation is performed. [7] Necessity to continue viewing (S207): In case of ending the viewing, in case of continuing the viewing,
The film projector operates normally. [8] Power-off (S208): The power of the apparatus main body of the film projector is turned off to bring the film projector into an end state.

Next, referring to FIGS. 3 to 7, the presence / absence of the cartridge is confirmed, the film is fed out, the focus is adjusted, and the upside-down state is required.
Also, the flowchart of each subroutine of whether or not to continue viewing will be described.

Subroutine for confirming presence / absence of cartridge : FIG. 3 shows a first example of a film projector to which the present invention is applied.
8 is a flowchart of a subroutine for checking the presence or absence of a cartridge, showing the operation of the embodiment. (1) When the power source of the apparatus main body of the film projector is turned on, it is automatically checked whether or not the cartridge 1 is loaded in the cartridge loading section of the film projector (S209). (2) Normally, in the initial state, since the cartridge 1 is not yet loaded in the cartridge loading section of the film projector, the operation display section or the like (not shown) shows, for example, "no cartridge loaded" or a simplified diagram. A warning is displayed (S210). In this case, the presence or absence of the cartridge 1 is confirmed, and the cartridge 1
To load. (3) Next, when the cartridge 1 containing the film 2 on which the photographed image to be viewed is projected is loaded into the cartridge loading section of the film projector,
The fixed contact 9a and the movable contact 9b of the electric contact 9 are brought into contact with each other to be in an energized state, and the operation display section or the like displays, for example, "cartridge loading" or a simplified drawing indicating that the state is loaded. It is done (S211).

Subroutine for film feeding : FIG.
FIG. 8 is a flowchart of a film feeding subroutine showing the operation of the first embodiment of the film projector to which the present invention is applied. (1) The operation of feeding the film 2 is instructed by pressing an operation switch (not shown) or the like (S21
2). (2) The delivery motor 5 rotates in the forward direction, the film 2 stored in the cartridge 1 is delivered, and the film 2 is guided so that the leading end side of the film 2 is taken up by the take-up shaft 7 (S213). ). (3) a) At this time, the magnetic head 4 reads the magnetic information of the magnetic recording portion 2b and detects information indicating that the frame is the first frame, such as position information of the first frame (S214). b) In association with this operation, the winding motor 8 is rotationally driven (S215). c) The photographed image of the first frame or another predetermined frame is moved to the projection processing position, that is, the position on the projection optical path where the projection processing is performed, and stopped (S216). (4) This enables projection onto the screen 16 surface.

Focus Adjustment Subroutine : FIG. 5 is a flowchart of the focus adjustment subroutine showing the operation of the first embodiment of the film projector to which the present invention is applied. (1) It is confirmed whether the projected image is in focus (S217). (2) If the subject is not in focus, focus adjustment is automatically performed (S218). This will be explained. a) First, the distance measuring device 17 which measures the distance by receiving the reflected light from the surface of the screen 16 performs distance measuring and arithmetic processing. b) Next, the lens driving motor 14 that is interlocked with the distance measuring device 17 rotates a predetermined amount based on the processing result. c) The lens supporting member 13 is rotated by a predetermined amount of rotation of the lens driving motor 14 via a gear 15 coaxial with the lens driving motor 14 and also rotating by a predetermined amount, and a rack gear 13a meshing with the gear 15. Is moved in the optical axis direction by a predetermined amount, and the optical lens system 12 is moved to a predetermined position. d) This brings the subject into focus. e) It is again checked whether the projected image is in focus. (3) In the case of electrically driving with a predetermined operation switch (not shown), the lens driving motor 14 is rotated while visually confirming the projected image on the screen 16 surface. Good.

Upside- down necessity subroutine : FIG. 6 is a flowchart of the upside-down necessity subroutine showing the operation of the first embodiment of the film projector to which the invention is applied. (1) After the subject is brought into the in-focus state, it is visually confirmed whether or not the projection image projected on the screen 16 needs to be turned upside down (S219). (2) a) When the projected image is an erect image and the user normally watches the projected image, it is not necessary to turn upside down. b) Even if the projected image is an inverted image, it is not necessary to turn upside down when intentionally viewing the projected image with the inverted image. (3) a) When the projected image is an inverted image and normally the user wants to view the projected image as an upright image, it is necessary to turn upside down. b) In addition, even if the projected image is an erect image, it is necessary to reverse the top and bottom when intentionally viewing the projected image as an inverted image. (4) In this way, when it is necessary to turn upside down, the reversing optical member 18 is moved to a position facing the projection optical path, and the upside down of the projected image is turned upside down (S220). (5) When the upside down is reversed, the process returns to the focus adjustment routine again. In addition, when confirming with the naked eye whether the projected image is an upright image or an inverted image, even if the projected image is not in an accurate focused state,
When the confirmation with the naked eye is sufficiently possible, it is possible to avoid the situation of refocusing by using a flowchart in which the confirmation operation of the focused state is replaced.

Sub- routine for necessity of continuation of appreciation : FIG. 7 is a flow chart of a sub-routine for necessity of continuation of appreciation, showing an operation of the first embodiment of the film projector to which the invention is applied. (1) When you have finished watching the photographed image of a given frame,
Select whether to continue further or end viewing (S
221). (2) a) Further, when the photographed images of other frames of the cartridge 1 are to be continuously observed, only a predetermined number of frames are displayed.
The film 2 is fed (S222), and the process returns to the focus adjustment routine again. b) When the viewing of one cartridge is completed, the film 2 is rewound (S223). (3) Further, when the other cartridge 1 is also viewed, the cartridge 1 may be loaded in the cartridge loading section and the same operation / operation may be repeated.

Next, regarding a predetermined configuration, FIGS.
Will be described in detail. First, detection of whether or not the cartridge 1 is loaded will be described with reference to FIGS. FIG.
FIG. 9 is a schematic sectional view showing a part of the first embodiment of the present invention. The electric contact 9 includes a fixed contact 9a and a movable contact 9b.
The fixed contact 9a is fixed to the device side 100, the movable contact 9b is fixed to the device side 100 on the other end side with one end side being a free end, and the bent part 9c is provided on the free end side. Has been formed. FIG. 8 shows a state in which the cartridge 1 is not loaded, and 100a is a cartridge chamber,
100b is a bearing part. This cartridge chamber 100a
Then, when the cartridge 1 is inserted from the front side of the paper in the figure, as shown in FIG. 9, when the outer wall surface of the cartridge 1 presses and bends the movable contact 9b, the bent portion 9c comes into contact with the fixed contact 9a. The power is turned on, so that it is detected that the cartridge 1 is loaded.

Next, referring to FIGS. 10 and 11, the rotation transmission mechanism for the cartridge 1 and the film guide member will be described. FIG. 10 and FIG.
10 shows a part of the first embodiment of the present invention, FIG. 10 is a schematic sectional view, and FIG. 11 is a schematic side view of a partial sectional view of FIG. A first gear 22 is fitted to the rotating shaft 5a of the forward / reverse feed motor 5, and the first gear 22
The second gear 23 that meshes with is fitted to the shaft member 24. An engaging portion 24a that engages with the rotating shaft portion 1a of the cartridge 1 is formed on one end side of the shaft member 24. 1b
Is a projecting shaft portion that is rotatably formed integrally with the rotating shaft portion 1a of the cartridge 1 and is inserted into a bearing portion 100b formed in the cartridge chamber 100a of the apparatus side 100. In this way, the delivery motor 5
Is converted into an appropriate rotation speed (or rotation speed) and transmitted to the rotation of the cartridge 1. It should be noted that the number of gear components is appropriately selected and changed according to the number of revolutions to be converted, etc., and is not limited to this embodiment. In this way, the film 2 stored in the cartridge 1 is operated in the forward direction by the forward rotation, and is rotated by the reverse rotation.
It is designed to operate in the rewinding direction.

25 and 26 are first film guide members,
The ridge portion 2 is formed to have a predetermined thickness so as to have elasticity so that the two surfaces of the film can be pressed against each other, and each has a predetermined length.
5a, 25b, 26a, 26b are formed and guide the film 2. In addition, the first film guide member 2
Projection openings 25c and 26c are formed in 5 and 26, respectively. In this embodiment, the first film guide members 25 and 26 are the one end sides 25d and 26 on the cartridge 1 side.
d is fixed to the apparatus side 100, and the other end sides 25e and 26e are free ends, but the present invention is not limited to this, and one or both of the first film guide members 25 and 26 can be moved. Alternatively, the non-guide may be retracted, and the pressure contact action may be performed during the guide.

27 and 28 are second film guide members,
It is formed to have a predetermined wall thickness so as to have elasticity and to guide traveling in the width of the film 2,
a, 27b, 28a, 28b are formed. The second film guide members 27 and 28 are arranged at a distance slightly larger than the width of the film 2 in consideration of providing a slight margin in the width of the film 2. In this embodiment, one end side 27c, 28c of the cartridge 1 side of the second traveling guide member 27, 28 is fixed to the apparatus side 100, and the other end side 27d, 28d is a free end. However, the present invention is not limited to this, and one or both of the second film guide members 27 and 28 may be configured to be movable so that the second film guide members 27 and 28 are retracted when not being guided and are positioned at a predetermined position when being guided. By providing such a film guide member, it is possible to prevent a large displacement of the traveling position due to bending of the film 2 or the like.

Next, the distance measuring device 17 will be described with reference to FIG. FIG. 12 shows a part of the first embodiment of the present invention and is a principle explanatory view of the distance measuring device 17. The distance measuring device 17 is provided with a light receiving lens L1 for distance measurement, and the light projected from the optical lens system 12 constituting the projection lens system is
It reaches the surface of the screen member 16 and is reflected. The reflected light is received by the light receiving element portion E1 via the light receiving lens L1. The received light is subjected to predetermined photoelectric conversion processing in the light receiving element section E1 to become an electric signal, and the arithmetic processing circuit 1
7A, arithmetic processing is performed based on the blur amount, and a predetermined drive signal is given from the drive circuit 17B to drive the lens driving motor 14 by a predetermined rotation amount. This allows
The optical lens system 12 is moved in the optical axis direction by a predetermined amount, and the projected image on the surface of the screen member 16 is in focus.

Next, the reversing optical member 18 and the reversing driving means will be described with reference to FIGS. FIG.
FIG. 3 is a perspective view showing a reversing optical member according to the first embodiment of the present invention. 14 to 16 show the first embodiment of the present invention and are operation explanatory views of the inversion driving means. 14 is a plan view at the time of retreat, FIG. 15 is a side view of FIG. 14, and FIG. 16 is a plan view at the time of inversion drive. As the prism member for rotating the incident image by 180 degrees, for example, a prism member called a Dove prism is used as shown in FIG. With such a shape and configuration, when passing through the dove prism, the image is rotated by 180 degrees, and the image is inverted and projected onto the surface of the screen member 16.
Engagement portions 19b and 19c adapted to engage guide rails 100c and 100d formed on the device side 100 in a plane direction orthogonal to the optical axis on the inversion support member 19 that fixedly supports the inversion optical member 18. Is formed so as to be movable on the guide rails 100c and 100d in the direction orthogonal to the optical axis. If reversing is required, the reversing support member 1
Rack gear 19a formed by being arranged in the moving direction of 9
And the gear 2 fitted to the rotation shaft of the reversing drive motor 20.
When the reversing drive motor 20 is rotated in the forward direction by meshing with 1, the reversing support member 19 is moved to the optical axis side, and thus the reversing optical member 18 is moved to the optical axis P, and the reversing optical member is moved. The image input from the captured image is rotated by 180 degrees with respect to the optical axis by 18, and the screen member 16
The projected image on the plane becomes an erect image for an inverted image and an inverted image for an erect image.

Second Embodiment Next, a second embodiment of the present invention will be described. 17,
18 shows a second embodiment of the present invention, FIG. 17 is a schematic sectional view, and FIG. 18 is a schematic side view of a partial cross section of FIG. In the above-described first embodiment, the operator determines whether the erect image is the inverted image and performs the reversing operation manually with the naked eye, but this is automated. As a configuration for automating, a measuring unit which is arranged on the cartridge side from the position on the projection optical path and measures the light transmission density of the surface of the film 2 of the captured image to be projected next,
An arithmetic processing means for arithmetically processing the result of the measuring means and an inversion actuating means for activating the inversion driving means when the photographed image is judged to be an inverted image by the arithmetic processing means are provided.

Further, the film guide member described below is provided. That is, a film made of a resin material which is pressed against the film surface of the photographed image frame moved to the projection processing position and integrally formed with a shielding member arranged between the position where the measuring means is arranged and the projection processing position. Provide a guide member. In FIGS. 17 and 18, 29 and 30 are third film guide members, which are formed of a resin material to have a predetermined thickness and have a predetermined length, respectively, and projecting ridges 29a, 29b, 30a, 30b. Is formed and guides the film 2. In addition, the third film guide members 29 and 30 are provided with the projection openings 2 respectively.
9c and 30c are formed, and the side plate shield 2
9d and 30d, upper plate shields 29e and 30e (not shown), and lower plate shields 29f and 30f (not shown) are connected to each other to form a shielded room integrally.
Long holes 29g and 30g for light detection are formed at positions closer to the cartridge 1 than the side plate shields 29d and 30d. The long holes 29g and 30g are formed to have a length that includes the upper portion and the lower portion of the image on the film 2. In this embodiment, the third film guide members 29, 30 have one end side 29h, 30h on the cartridge 1 side fixed to the apparatus side 100 and the other end side 29i, 30i free end. Without being limited thereto, the third film guide member 29,
One or both of 30 may be configured to be movable, and may be retracted when not being guided, and pressure contacting may be performed when guiding. In addition, 31 and 32 are fourth film guide members,
Here, it has the same structure as the second film guide members 27 and 28 described in the first embodiment.

33a and 33b are light emitting elements, and 34a and 34
Reference numeral b (not shown) is a light receiving element, which is the above-mentioned long holes 29g, 3
Light detection is possible on the upper side and the lower side of 0 g, and the side plate shields 29d and 30d of the third film guide members 29 and 30 are provided.
Upper plate shields 29e and 30e (not shown), lower plate shield 2
It is arranged in a shielded room formed by 9f and 30f (not shown). Light emitting elements 33a and 33b, light receiving element 3
4a and 34b may be arranged on the apparatus side 100 or may be arranged on the third film guide members 29 and 30. In this embodiment, the device side 100 is provided with the covering portions 100c and 100d. Thus, the light transmission densities of the film 2 are measured at the upper and lower parts of the image.

The light transmission density of the surface of the film 2 of the photographed image is measured while the photographed image located on the projection optical path is projected, and the light transmission density of the surface of the film 2 of the next photographed image is measured. It is done by Therefore, by using the third film guide members 29 and 30 having the above-described configuration, the measurement of the light transmission density is not affected by the light from the illumination light source 10 for projection when measuring the light transmission density. Accuracy is improved. In addition, in terms of light-shielding property, light that enters the optical path between the light emitting elements 33a and 33b and the light receiving elements 34a and 34b from between the third film guide member 29 and the third film guide member 30 is prevented. Two
It also has the effect that the ridges 29b and 30b of 9 and 30 block. Further, since the convex portion such as the shielding portion as described above is formed, the strength is appropriately maintained and the planarity is also advantageous.

The measurement result of the light transmission density thus obtained is arithmetically processed by an arithmetic processing means such as an arithmetic circuit. In the second embodiment, the criterion for determining that the image is an inverted image in the calculation process is that the larger the proportion of the bright part is, the smaller the sky is, and the smaller is the ground. As a result, when it is determined that the photographed image is an inverted image, the reversing operation means such as a drive control circuit for rotating the reversing drive motor 20 constituting the reversing driving means in a predetermined forward direction is used. The reversing drive motor 20 is rotated forward by a predetermined amount to move the reversing optical member 18 on the optical axis, and the photographed image is rotated 180 degrees with respect to the optical axis to reverse the top and bottom of the projected image. The light transmission density may be measured in all the upper and lower parts of the photographed image of one frame by measuring the film 2 while the film 2 is running.

Further, in order to return the reversing optical member 18 moved to the position facing the optical path to the initial position again, that is, to move it to the retreat position, the reversing drive motor 20 is reversed in a predetermined manner by the reversing drive means. It is carried out by

Third Embodiment Next, a third embodiment of the present invention will be described. In the above-described second embodiment, the criterion for the inverted image in the arithmetic processing is that the greater the proportion of the bright part is the sky, and the smaller the proportion is the ground. Can be difficult. The third embodiment is an improvement of this. FIG. 19 is a schematic plan view showing a part of the third embodiment of the present invention. As shown in FIG. 19, when the photographed image I is placed at the position on the projection optical path, there are three positions 35 between the position of the photographed image I and the cartridge 1.
By arranging the elements for light detection on a, 35b, and 35c, it is possible to increase the accuracy in determining whether the image is an upright image or an inverted image. In particular, it is extremely effective in view of the fact that the main subject is often located in the center of the photographed image plane by disposing the light detecting element in the center 35b.

Fourth Embodiment Next, a fourth embodiment of the present invention will be described. FIG.
[Fig. 8] is a schematic plan view showing a part of a fourth embodiment of the present invention. By further advancing the concept of the third embodiment described above, FIG.
As shown in FIG. 2, a sensor array capable of detecting light from the upper part to the lower part of the captured image I at a position between the position of the captured image I and the cartridge 1 when the captured image I is placed on the projection optical path. For example, by arranging the sensor array 36 in the shape of a long hole, it is possible to extremely reduce the error in the determination of the erect image or the inverted image. It is extremely effective in determining whether a captured image with various contents (framing, etc.) is an erect image or an inverted image.

Fifth Embodiment Next, a fifth embodiment of the present invention will be described. 21,
22 shows a fifth embodiment of the present invention, FIG. 21 is a perspective view, and FIG. 22 is a plan view seen from the front. As shown in FIG. 21, as a means for determining upside down, the measuring means uses the reflected light from a plurality of predetermined positions of the projected image 37 projected on the screen member 16 to measure the distance. It is a thing. In this embodiment, five points are measured, but they are appropriately selected. In the measurement, the distance measuring units D ₀ , D ₁ , D ₂ , D ₃ and D _{4 including the} light receiving lens and the light receiving optical element are provided within a predetermined range D around the projection irradiation opening 101 on the front surface of the device side 100. It may be arranged to detect the reflected light at the positions P ₀ , P ₁ , P ₂ , P ₃ , and P ₄ of the projected image 37.

Sixth Embodiment In each of the above-described embodiments, the rotation conversion means rotates the image incident from the photographed image by 180 degrees with respect to the optical axis to invert the top and bottom of the projected image. When the reversing optical member 18 is moved to a position facing the projection optical path, the projection image on the screen 16 surface is inverted upside down. The rotation conversion means is a rotation optical member that rotates the captured image by 90 degrees with respect to the optical axis to convert the projection image by 90 degrees, and when the rotation optical member 1 moves to a position facing the projection optical path, The projected image on the screen 16 may be rotationally converted into a horizontal position image for the vertical position image and a vertical position image for the horizontal position image. Further, in the case where a measuring means for measuring the light transmission density of the surface of the film 2 of the photographed image is provided, as the measuring means for measuring the light transmission density of the surface of the film 2 of the photographed image to be projected, for example, light emission When a pair of an element and a light receiving element is adopted, the arrangement relationship of the elements is not limited to the arrangement relationship of the elements in the above-mentioned embodiment, and for example, two pairs of elements in the film running direction are used. Of course, it may be arranged such that they are spaced apart from each other at a predetermined distance so as to be more suitable for determining the horizontal position image or the vertical position image.

In the seventh and above embodiments, as a structure for automating the determination of an erect image / inverted image and a horizontal position image / a vertical position image of an image, the film 2 is disposed on the cartridge side from the position on the projection optical path. Measuring means for measuring the light transmission density of the surface, an arithmetic processing means for arithmetically processing the result of the measuring means, and an inversion driving means when the photographed image is judged to be an inverted image by the arithmetic processing means. It is provided with a reversing operation means,
The measurement result of the light transmission density thus obtained is arithmetically processed by an arithmetic processing means such as an arithmetic circuit. In the calculation process, the criterion for determining that the image is an inverted image is determined such that the larger the proportion of the bright portion is the sky, the smaller the proportion is the ground. Furthermore, in the third embodiment and the fourth embodiment,
By changing the number of light sensing elements and the structure,
It is possible to more reliably determine whether a captured image of various contents (framing, etc.) is an upright image or an inverted image.

On the other hand, in the seventh embodiment, as the processing information of the light transmission density for determining whether the photographed image is an erect image or an inverted image, various information is stored, including the case described above. The main body of the film projector device is provided with the first ROM means so that it can be exchanged, and the result of the measurement by the measuring means is compared and judged by the processing information of the first ROM means to judge whether the photographed image is an upright image or an inverted image. It was done. Since such first ROM means can store more and various information, it is possible to provide high accuracy in determining whether the image is an upright image or an inverted image. Further, by preparing a plurality of kinds of such first ROM means, for example, by selecting the most suitable first ROM means corresponding to the configuration and arrangement of the elements for light detection, an erect image or an inverted image can be obtained. A quick judgment is made with high accuracy in the judgment.

Eighth Embodiment Further , the rotation converting means is a rotating optical member for rotating the photographed image by 90 degrees with respect to the optical axis and rotating the projected image by 90 degrees, and the predetermined image is a vertical position image. A second ROM means for storing processing information of light transmission density for determining whether the photographed image is a lateral position image or a longitudinal position image is provided in the film projector apparatus main body in a replaceable manner, and the measurement result by the measuring means is It may be so arranged that the photographed image is judged to be a lateral position image or a longitudinal position image by comparing and judging based on the processing information of the 2ROM means. Also in this case, similarly, since such a second ROM means can store more and various information, it is possible to provide high accuracy in determining whether the image is a lateral position image or a longitudinal position image. . In addition, by preparing a plurality of such second ROM means, for example, by selecting the most suitable second ROM means corresponding to the configuration and arrangement of the elements for light detection, the horizontal position image or the vertical position A quick judgment is made with high accuracy in judging whether an image.

Further, both the first ROM means and the second ROM means are provided so as to be exchangeable in the main body of the film projector apparatus, and the two types of ROM means, the first ROM means and the second ROM means, make it possible to change the posture of the photographed image in various ways. You may make a decision.

Further, in each of the above-described embodiments, by providing a switching mechanism in which a predetermined portion of the projection opening is shielded, the photographed image shields a part of the upper and lower parts of the entire screen. The same can be done in the case of a so-called panoramic image or the like that has been captured by.

Ninth Embodiment Further, a photographed image is obtained by providing a switching mechanism having an optical path blocking portion for blocking a part of the measurement optical path of the measuring means, while making a predetermined portion of the projection opening a shielded opening. However, for example, it is possible to correspond to the case of a so-called panoramic image which is photographed with a part of the upper and lower sides shielded from the entire screen, and the accuracy of the measurement of the light transmission density of the surface of the film 2 can be improved. Can be improved. In this embodiment, the photo-detecting element, which has the shape of a sensor array having, for example, a long hole described in the fourth embodiment, blocks upper and lower parts as necessary.

23 and 24 for the ninth embodiment.
Will be described below. FIG. 23 is a schematic sectional view showing a part of the ninth embodiment of the present invention. FIG. 24 is a schematic side view showing a part of the tenth embodiment of the present invention and a part of which is shown in cross section in FIG. 23. Reference numerals 41 and 42 denote fifth film guide members, which are made of a resin material and have a predetermined wall thickness, and each have a predetermined length.
A, 41b, 42a, 42b are formed to guide the film 2. Also, the fifth film guide member 4
1 and 42 have projection openings 41c and 42c, respectively, and side plate shields 41d and 42d, upper plate shields 41e and 42e (not shown), and lower plate shield 41.
A shielded room formed by connecting f and 42f (not shown) to each other is integrally formed. Side plate shields 41d, 4
A slot 41 for detecting light is provided at a position closer to the cartridge 1 than 2d.
g, 42g are formed. The long holes 41g and 42g are
The film 2 is formed to have a length including the upper part and the lower part of the image. Further, the holes 41h, 41i, 42h, 41h, 42h, 42h having a predetermined size are provided on both sides of the long holes 41g, 42g.
42i is formed. Fifth film guide member 4
In this embodiment, one end side 41j on the cartridge 1 side is fixed to the device side 300 and the other end side 4j
Although 1k and 42k are free ends, the present invention is not limited to this, and one or both of the fifth film guide members 41 and 42 are movable so that the fifth film guide members 41 and 42 are retracted when not guided and press contacted when guided. You may give it.
In addition, 43 and 44 are the 6th film guide members, and have the same structure as the 2nd film guide members 27 and 28 demonstrated in 1st Example here.

45a and 45b are first light emitting elements, and 46a and
46b (not shown) is a first light receiving element, which is the long hole 4 described above.
Light detection is possible on the upper side and the lower side of the 1g and 42g, and the side plate shielding portions 41d and 41d of the fifth film guide members 41 and 42 are
42d, upper plate shields 41e and 42e (not shown), and lower plate shields 41f and 42f (not shown) are arranged in a shielded room. In the shielded room, the second light emitting element 47, the second light receiving element 48, the third light emitting element 49,
The third light receiving element 50 is arranged. First light emitting element 45
a, 45b, first light receiving elements 46a, 46b (not shown)
May be disposed on the apparatus side 300 or may be disposed on the fifth film guide members 41 and 42. In this embodiment, the device side 300 is provided with the covering portions 300c and 300d. Thus, the light transmission densities of the film 2 are measured at the upper and lower parts of the image.

51 and 52 are shielding plates, and the shielding plates 51 and 5
2 is a rotary lever 53 that is rotatable around a rotary shaft 53a.
Engaged with the pins 53b and 53c of the rotary lever 5
The predetermined rotation of 3 moves between the normal frame position and the shield frame position where a predetermined part of the projection opening is shielded. A shield frame of various sizes and shapes can be formed depending on the shape and size of the shield plate and its mechanism. In this embodiment, the upper and lower parts of the projection opening are shielded so as to correspond to, for example, the so-called panoramic shot image described above. The shield plates 51 and 52 are formed to have a predetermined length so as to cover the upper and lower sides of the projection opening 41c to block the optical path and the upper and lower sides of the long hole 41g to block the optical path when the shield frame is set. Has been done. This covers the upper and lower non-shooting parts of the panorama shot image,
Since the light path of the element for light detection is blocked in the same manner as the predetermined opening and the light path for light detection corresponding to the shielding frame is provided, the light transmission density of the surface of the film 2 during the panoramic projection is measured. The accuracy of can be improved. It should be noted that it is possible to cope with captured images of other shapes and sizes by changing the shape and size of the shielding frame and the mechanism for forming the frame.

[0056]

As described above, according to the present invention, the projection drive image is rotated and converted by moving the rotation conversion means to the position facing the projection optical path by the conversion driving means,
The measurement means measures the light transmission density of the film surface at a position closer to the cartridge than the projection processing position, the arithmetic processing means performs arithmetic processing on the result of the measuring means, and the arithmetic processing means forms a photographed image as a predetermined image. If it is determined that the conversion drive means is operated by the conversion operation means to move the rotation conversion means to a position facing the projection optical path, the rotation conversion of the projection image is automatically performed. By eliminating the troublesome work and operation of the viewer, you can enjoy quiet and atmospheric viewing with a simple operation. Further, the film guide member improves the flatness of the film surface and shields unnecessary light to improve the measurement accuracy of the measuring means.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main structure of a first embodiment of a film projector to which the present invention is applied.

FIG. 2 is a main flowchart showing the processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 3 is a flowchart of a subroutine showing a processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 4 is a flowchart of a subroutine showing a processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 5 is a flowchart of a subroutine showing the processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 6 is a flowchart of a subroutine showing a processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 7 is a flowchart of a subroutine showing the processing operation of the first embodiment of the film projector to which the present invention is applied.

FIG. 8 is a schematic sectional view showing a part of the first embodiment of the present invention.

FIG. 9 is a schematic sectional view showing a part of the first embodiment of the present invention.

FIG. 10 is a schematic sectional view showing a part of the first embodiment of the present invention.

FIG. 11 is a schematic side view showing a part of the first embodiment of the present invention and a part of the cross section in FIG.

FIG. 12 is a diagram illustrating a part of the first embodiment of the present invention and is a principle explanatory diagram of a distance measuring device 17.

FIG. 13 is a perspective view showing a reversing optical member according to the first embodiment of the present invention.

FIG. 14 shows the first embodiment of the present invention, which is an operation explanatory view of the inversion driving means, and is a plan view at the time of retraction.

FIG. 15 is a side view of the reversing drive means during the retreat, showing the first embodiment of the present invention.

FIG. 16 is a diagram for explaining the operation of the inversion driving means according to the first embodiment of the present invention and is a plan view at the time of inversion driving.

FIG. 17 is a schematic sectional view showing a part of a second embodiment of the present invention.

FIG. 18 is a schematic side view showing a part of the second embodiment of the present invention and a part of the cross section in FIG.

FIG. 19 is a schematic plan view showing a part of the third embodiment of the present invention.

FIG. 20 is a schematic plan view showing a part of the fourth embodiment of the present invention.

FIG. 21 is a perspective view showing a fifth embodiment of the present invention.

FIG. 22 is a plan view showing the sixth embodiment of the present invention as seen from the front surface.

FIG. 23 is a schematic sectional view showing a part of the ninth embodiment of the present invention.

FIG. 24 is a schematic side view showing a part of the ninth embodiment of the present invention and a part of the cross section in FIG. 23.

FIG. 25 is a perspective view showing a conventional slide projection device.

[Explanation of symbols]

 1 Cartridge 2 Film 2a Perforation part 2b Magnetic recording part 3 Optical sensor 4 Magnetic head 5 Sending motor 7 Winding shaft 8 Winding motor 9 Electric contact 9a Fixed contact 9b Movable contact 10 Illuminating light source 11 Light diffusing plate 12 Optical lens system 13 Lens Support member 14 Lens drive motor 16 Screen member 17 Distance measuring device 18 Inversion optical member 19 Inversion support member 20 Inversion drive motor

Claims (9)

[Claims] 1. A projection member for projecting a photographed image, wherein a film having a magnetic recording portion having a plurality of photographed image frames and having photographed information recorded therein is wound and accommodated, and a cartridge formed so that the film can be fed out is loaded. In a film projector adapted to project onto a surface, a detection means for detecting whether or not the cartridge is loaded, a loading means for sending out the film and moving a predetermined photographed image frame to a projection processing position, and a projection member surface. Focus adjustment means for bringing the projected projection image into focus, rotation conversion means for rotating the captured image in a predetermined manner to rotate and convert the projection image, and a position where the rotation conversion means faces the projection optical path and a retracted position. And a conversion drive means for moving the rotation conversion means to a position facing the projection optical path. A film projector comprising: a conversion actuating unit for moving the film; and a film guide unit for holding the surface of the film and guiding the film. 2. The film projector according to claim 1, wherein the rotation conversion means is an inverting optical member that rotates the captured image by 180 degrees with respect to the optical axis to invert the top and bottom of the projected image. 3. The film projector according to claim 1, wherein the rotation conversion means is a rotating optical member that rotates the captured image by 90 degrees with respect to the optical axis to rotate the projected image by 90 degrees. 4. A projection member for projecting a photographed image, in which a film having a magnetic recording portion having a plurality of photographed image frames and having photographed information recorded therein is wound and accommodated, and a cartridge formed so that the film can be sent out is loaded. In a film projector adapted to project onto a surface, a detection means for detecting whether or not the cartridge is loaded, a loading means for sending out the film and moving a predetermined photographed image frame to a projection processing position, and a projection member surface. Focus adjustment means for bringing the projected projection image into focus, rotation conversion means for rotating the captured image in a predetermined manner to rotate and convert the projection image, and a position where the rotation conversion means faces the projection optical path and a retracted position. And a conversion drive means for moving between the projection processing position and the cartridge side of the projection processing position for measuring the light transmission density of the film surface. Setting means, arithmetic processing means for arithmetically processing the result of the measuring means, and when the arithmetic processing means determines that the captured image is a predetermined image, the rotation converting means is moved to a position facing the projection optical path. And a film guide member made of a resin material integrally formed with a shielding member arranged between the position where the measuring unit is arranged and the projection processing position. A film projector characterized by being provided. 5. The rotation conversion means is an inversion optical member that inverts the top and bottom of the projected image by rotating the captured image by 180 degrees with respect to the optical axis, and the predetermined image is an inverted image. The film projector described. 6. A film projector apparatus main body is provided with a first ROM means in which the processing information of the light transmission density for judging whether the photographed image is an upright image or an inverted image is stored, which is replaceable.
6. The film projector according to claim 5, wherein the result of the measuring means is compared and judged by the processing information of the first ROM means to judge whether the photographed image is an upright image or an inverted image. 7. The rotation conversion means is a rotary optical member for rotating the captured image by 90 degrees with respect to the optical axis to rotate the projected image by 90 degrees, and the predetermined image is a vertical position image. 4. The film projector according to item 4. 8. A second RO in which processing information of light transmission density for determining whether a photographed image is a horizontal position image or a vertical position image is stored.
The M means is replaceably provided in the film projector main body, and the result of the measuring means is compared and judged by the processing information of the second ROM means to judge whether the photographed image is a lateral position image or a longitudinal position image. 7. The film projector according to 7. 9. The film according to claim 4, further comprising a switching mechanism having an opening for shielding a predetermined portion of the projection opening and an optical path blocking portion for blocking a part of the measurement optical path of the measuring means. projector.