JP2000356800A - Film observing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film observing device which outputs the pictures of plural films having different sizes in optimum display size by a simple operation or with a simple constitution. SOLUTION: In this film observing device, films 4 having different sizes can be held on a movable stage 6 capable of freely moving while being opposed to an illuminating panel 5, the images of the films 4 are formed on a CCD 11 through a mirror 7, focusing and zooming lens units 8 and 9, and an output signal is outputted to a monitor 3 through a video signal processing part 12. When an instruction on such as film size is inputted from an operating panel 14, a system controller 13 reads out data for controlling zooming from a zooming ROM 15, sets the unit 9 to a zooming magnification in accordance with the size, reads out data for controlling focusing from a focusing ROM 16 and sets the unit 8 so that the image is formed in the focusing condition of the zooming magnification, and the picture of the film is clearly displayed on the display surface of a monitor 3 in a state where a screen is filled up with the picture of the film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film observing apparatus which enables an image of a developed film to be displayed on a monitor for observation.

[0002]

2. Description of the Related Art A film observation device for displaying an image of a developed film on a monitor has been conventionally produced, but most of the film observation devices are of a general film size.
The display area of the monitor is an area for one frame when a 35 mm film is imaged.

In addition, manual focus adjustment is required to simplify the structure. Further, a film observation stand and the like for photographing a film using a commercially available video camera have been commercialized.

[0004]

However, in the conventional film observation apparatus, when the film to be photographed is a film of a different size, the output size is determined according to the film size. Although the area exceeds the area, and a small-sized film can display an area for one frame, it is difficult to obtain an easy-to-view image due to a low display magnification.

Further, in a film observation apparatus using a commercially available video camera, although the magnification can be changed manually, it is necessary to adjust the magnification at the time of observation in order to obtain an optimum display magnification, and the operation is cumbersome. There was a problem.

Further, the conventional film observation apparatus has a problem that the operation is troublesome because the focus is manually adjusted, and the film observation apparatus using a commercially available video camera has an auto-focus function. A means for detecting the focus from a signal or the like must be provided, and there has been a problem that the structure is complicated.

(Object of the Invention) The present invention solves the above-mentioned problems, and an object of the present invention is to provide a film observing apparatus for outputting a plurality of films of different sizes at an optimum display size with a simple operation or configuration. Aim.

Another object of the present invention is to provide a film observing apparatus which does not require a focus adjusting operation accompanying a change in display magnification.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method of forming an image of a developed film, which is a subject, on an imaging surface of an imaging device via an optical system and converting the film into an electric signal. In a film observation device for displaying a film image on a monitor by outputting a signal to the monitor, a plurality of zoom means for changing a display magnification and a plurality of means corresponding to a film image of one entire frame to fill the screen of the monitor. Zoom control means for storing zoom lens set position data or electronic zoom coefficient data according to the film size, reading the data, and setting a display magnification.

The zoom control means may read out zoom lens set position data or electronic zoom coefficient data corresponding to a plurality of corresponding film sizes by means of an operation panel instruction or film size detection means. Has become. Also, optical zoom means for changing the display magnification and zoom lens set position data corresponding to a plurality of film sizes corresponding to the film image of the entire frame so as to fill the entire screen of the monitor are stored. There is a zoom lens control means for reading and setting a display magnification, and a control means for storing focus set position data for the zoom magnification set by the zoom lens control means, reading the data, and setting the focus position. are doing.

According to the above-mentioned film observation apparatus, it is controlled so that any one of the display magnifications corresponding to the sizes of a plurality of films is set in advance. Thus, for a plurality of different film sizes, the display magnification is controlled so that the film image of one entire frame fills the screen of the monitor.

In addition, since the zoom operation is performed by means of an instruction on the operation panel or a means for detecting the size of the film, a simple operation or automatically allows the film image of the entire frame to be displayed on the monitor to fill the screen of the monitor. You will be prompted to enter. According to the film observation device of the present invention, the focus position is controlled to correspond to the magnification of the optical zoom. As a result, even when the magnification of the optical zoom is changed so that the film image of one entire frame fills the screen of the monitor for a plurality of different film sizes, the focus is automatically controlled. No film images can be displayed on the monitor.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 and 2 relate to a first embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a film observation apparatus according to the first embodiment, and FIG. FIG. 3 is a block diagram illustrating a configuration of a signal processing system of a processing unit.

A film observation apparatus 1 according to a first embodiment of the present invention shown in FIG. 1 is connected to a film observation apparatus main body 2 capable of mounting a plurality of films having different sizes, and the film observation apparatus main body 2. And a monitor 3 for displaying a film observation image.

The film observation apparatus main body 2 includes an illumination panel 5 for illuminating the developed film 4 mounted for observation, and a movable stage 6 for inserting and holding the film 4.
A mirror 7 for turning light back and a zoom lens unit 8 as a variable power optical system for changing the angle of view to a predetermined optical magnification.
A focus lens unit 9 as a focus adjustment unit (focus adjustment optical system) for adjusting a film observation image to a focus state without blur, a CCD 11 for capturing (imaging) a film image, and an output signal for driving the CCD 11 A video signal processing unit 12 for performing video signal processing on the system, a system controller 13 for performing zoom and focus control and the like, and an operation panel 1 for performing an operation of inputting a film size instruction signal to the system controller 13
4 and a zoom control ROM storing information for zoom control
15 and a focus control ROM 16 storing focus control information.

A substantially flat illumination panel 5 is erected on the substrate 2a of the film observation apparatus main body 2.
Light is emitted in a planar manner when a lighting (light emission) power is supplied from a power supply unit (not shown) provided on the back surface of the substrate 2a of the film observation apparatus main body 2, for example. Each portion of the photographing area of the film 4 held on the movable stage 6 movably arranged in the orthogonal direction can be almost uniformly illuminated. In addition,
The size of the light emitting surface of the illumination panel 5 is set to be equal to or larger than the photographing area of the largest film that can be held on the movable stage 6.

The movable stage 6 includes a stage main body 6a, a film holding member 6b which is movable with respect to the stage main body 6a according to the film size and holds the film 4, and a stage main body 6a which is moved at each end side in the movable direction. It is composed of stage (main body) holding members 6c and 6d which are movably held.

The stage holding members 6c and 6d are substantially U-shaped with notches 17a and 17b formed at the centers of the surfaces facing each other, and the bottom surfaces thereof are fixed to the substrate 2a. Stage body 6 which is slidable in each of the notches 17a, 17b.
The two ends of “a” are fitted and held so that they can be held at arbitrary positions along a direction parallel to the surface of the lighting panel 5.

The stage main body 6a is provided with the notch 1 of the stage holding members 6c and 6d which are arranged to be separated from each other.
Near the center of a thick plate-like member whose both ends are fitted to 7a and 17b is cut out from one surface facing the mirror 7 so that the film 4 can be arranged and the film holding member 6
b is formed. Further, the thinned portion formed with the concave portion is formed into a frame shape through which light passes, and the film 4 held by the stage body 6a and the film holding member 6b.
The whole is illuminated by the illumination panel 5 so that the transmitted light can be passed to the mirror 7 side.

The film holding member 6b movable in accordance with the size of the film 4 disposed in the concave portion of the stage body 6a has a plate shape, and has a leaf spring 18 protruding in a semicircular shape on each side thereof. By storing the leaf spring 18 in a plurality of grooves 19 (three in FIG. 1) formed according to the film size of the stage main body 6a, even if the film holding member 6b has a different film size, the film size can be reduced. To be elastically held at a position corresponding to In other words, the structure is such that films of different sizes can be held by selectively storing the leaf springs 18 in the plurality of groove portions 19 provided at different positions.

The center of the end of the film holding member 6b opposite to the end on which the leaf spring 18 is mounted is cut out in a substantially V-shape, and a portion of the stage body 6a opposed to this end is formed. A similar notch is provided, and both ends of the film 4 are held in both notch portions, and the film 4 is held by the movable stage 6.

A light turning mirror 7 is arranged opposite to the lighting panel 5 with the movable stage 6 interposed therebetween. Light passing through the center of the lighting panel 5, for example, is reflected at the center of the light turning mirror 7. Then, the light travels along the optical axis through the zoom lens unit 8 and the focus lens unit 9 so that an image is formed at the center position of the CCD 11. When the center of the image is formed at the center position of the CCD 11, the image is displayed in a state where the center of the image is located at the center of the display area of the monitor 3.

For example, the state shown in FIG. 1 shows a state in which the film 4 having the smallest size is held and observed on the monitor 3, and the center of the film 4 is a mirror 7 for reflecting light, a zoom lens unit 8, The image is displayed on the optical axis of the focus lens unit 9, with the center of the image of the film 4 positioned at the center of the display area of the monitor 3.

When a film one size larger than this film size is held by the movable stage 6 while changing the holding position of the film holding member 6b, the center of the film is shifted to the right from the optical axis. In this case, by sliding the stage main body 6a to the left while being fitted to the cutouts 17a and 17b, the center position of the film can be set on the optical axis. When a larger film is held, the center of the film is further shifted to the right from the optical axis.
By sliding the to the left, the center position of the film can be set on the optical axis.

A zoom lens unit 8 into which light passing through a film image as a subject is turned by a mirror 7 and is incident thereon has a zoom motor 8a.
By driving the zoom lens, the zoom magnification (view angle change amount) of the zoom optical system constituting the zoom lens unit 8 can be changed.

The zoom motor 8a has a gear attached to its rotating shaft meshed with a gear attached to a drive shaft for driving the zoom optical system, and drives the zoom motor 8a from the system controller 13 via a driver (not shown). Thus, the zoom optical system can be driven to change the zoom magnification.

As will be described later, even when a film 4 having a different film size is loaded by a simple operation of inputting information on the film size from the operation panel 14, the system controller 13 displays the film observation information displayed on the monitor 3. The zoom magnification by the zoom lens unit 8 is variably set (according to the film size) so that the image is always displayed in a size suitable for observation.

The light that has passed through the zoom lens unit 8 enters the focus lens unit 9. The focus lens unit 9 includes a focus motor 9a, and the focus motor 9a is driven by a system controller 13 via a driver (not shown), so that C
The focus can be adjusted so that the film image formed on the imaging surface of the CD 11 (the imaging position, in a broader sense, the observation position) can be formed in the focus state, and the film image is focused on the CCD 11 by adjusting the focus state. In this state, a clear image is formed, a film observation image captured by the CCD 11 and displayed on the display surface of the monitor 3 can be clearly displayed in the focused state.

The CCD 11 photoelectrically converts the formed film image as an optical image, and outputs an electric signal corresponding to the brightness of the optical image. The CCD 11 is connected to the video signal processing unit 12 via a signal line, and receives a photoelectrically converted CCD signal by applying a CCD drive signal (not shown) inside the video signal processing unit 12.
The CD output signal is input to a video signal processing circuit 21 (see FIG. 2) of the video signal processing unit 12 to generate a video signal and output the video signal to an external monitor 3. A film observation image is displayed as the formed optical image.

In this embodiment, the video signal processing unit 1
2 performs a video signal generation process on a CCD output signal corresponding to an imaging surface image captured on the imaging surface of the CCD 11,
When the generated video signal is input to the monitor 3 and displayed on the display surface as an imaging surface image, that is, as a film observation image, the imaging surface image is displayed in such a state that the imaging surface almost fills the display surface. become.

The operation panel 14 is the system controller 1
An operation switch or an operation key for instructing a zoom operation with respect to 3 is provided. System controller 13
Is a zoom control, focus control and video signal processing unit 12
Make various settings. Further, corresponding control is performed according to an operation instruction signal from the operation panel 14.

The zoom control ROM 15 connected to the system controller 13 stores zoom lens position data as zoom control position information for changing the angle of view corresponding to the size of the film 4. Even when it is mounted, by setting and controlling each lens position of the zoom lens unit 8 with the zoom lens position data, an image is formed in such a state that the shooting area of the film becomes almost full on the imaging surface of the CCD 11. The angle of view is changed as follows.

That is, even when films of different sizes are mounted, an image is formed in such a state that the photographing area of the film is almost full on the image pickup surface of the CCD 11, so that the film image picked up by the CCD 11 is monitored. When displayed as a film observation image on the LCD 3, it is a major feature that an image can be output at an optimum display size such that the film observation image can be completely filled on the display surface.

The focus control ROM 16 connected to the system controller 13 has a zoom control R
Focus position data corresponding to the zoom lens position data of the OM 15 is stored. That is, in a state where the lens position of the zoom lens unit 8 is set by the zoom lens position data, a film image can be formed on the imaging surface of the CCD 11 in a focused state.

FIG. 2 is a block diagram showing the configuration of the video signal processing circuit 21 of the video signal processing unit 12. The CCD output signal has a CDS (correlated double sampling) processing section 22 for improving low-frequency noise, an AGC section 23 for automatically adjusting the signal level, and an A / D converter 24 for converting the signal into a digital signal.
And a color separation processing unit 25 for separating into a luminance and color difference signal;
It is composed of a white balance unit 26 for correcting a color tone, a γ processing unit 27 for performing γ correction, a contour correction unit 28 for correcting (adjusting) a contour emphasis level, and a D / A converter 29 for converting into an analog signal. ing.

A CCD output signal obtained by converting a film image as a subject into an electric signal is subjected to CDS processing by a CDS processing section 22 and then automatically adjusted to a signal level suitable for observation by an AGC section 23, and an A / D converter 24. Is converted into a digital signal.

The A / D-converted digital signal is subjected to color separation processing in a color separation processing section 25, white balance adjustment in a white balance section 26, and then to an outline correction section 28.
The D / A converter 2 corrects the contour emphasis level.
After being converted into an analog video signal by 9, it is output to the monitor 3, and a film observation image is displayed on the display surface of the monitor 3.

Next, the operation of this embodiment will be described. FIG.
The film 4 to be observed is held by the stage body 6a and the film holding member 6b as shown in FIG.
The stage body 6a is adjusted such that the center of the stage is on the center of the illumination panel 5 and the mirror 7. Thereafter, the user operates the operation panel 14 to move the film 4 attached to the movable stage 6.
Or a zoom operation signal corresponding to the angle of view change amount or the like.

When the system controller 13 receives the zoom operation signal, the system controller 13 reads out zoom lens position data based on the zoom operation signal from the zoom ROM 15. Also the system controller 1
Reference numeral 3 denotes a focus R corresponding to the zoom lens position data read from the zoom ROM 15.
Read from OM16.

Next, the system controller 13 creates a zoom motor drive signal based on the zoom control position data. Further, the system controller 13 creates a focus motor drive signal based on the focus control position data. The zoom motor 8a is based on a zoom motor drive signal,
It is driven by a zoom motor driver (not shown) provided in the system controller 13, and is set to a predetermined zoom magnification according to the film size.

This zoom magnification is a zoom magnification at which an image is formed in such a state that the photographing area of the film 4 almost completely fills the imaging surface of the CCD 11. That is, in the case of the film 4 having a small size, the zoom magnification is large, and as the size increases, the zoom magnification decreases. Then, even when the sizes are different, the image is formed on the imaging surface of the CCD 11 in such a state that the film image of the photographing area of the film 4 is almost completely filled.

The focus motor 9a is driven by a focus motor driver (not shown) provided in the system controller 13 based on a focus motor drive signal, and is set to a predetermined focus position.

In this state, the image of the photographing area of the film 4 is formed almost completely on the imaging surface of the CCD 11 in a focused state, and the output signal of the CCD 11 is converted by the video signal processing unit 12 into a standard video signal. Is input to the monitor 3. Then, the observation image of the film 4 of the held (mounted) size is displayed almost completely on the display surface of the monitor 3.

Therefore, in the case of a large-sized film which may occur in the conventional example, the film may exceed the display area of the monitor 3,
Since the display magnification of the small-sized film 4 is low, it is possible to eliminate a disadvantage that a film observation image which is difficult to see is displayed. In addition, it is possible to eliminate the need for focus adjustment work that is normally required when the zoom magnification is changed.

According to the present embodiment, in a plurality of films having different sizes, the entire photographing area of one frame of the film can be determined by a simple operation of instructing the size information for an arbitrary film actually mounted. Since the zoom operation is performed so that the film image to be displayed fills the display surface of the monitor 3, it is possible to provide an easy-to-view film observation image with a simple operation.

A simple configuration having a zoom optical system and a control means for setting the zoom magnification of the zoom optical system according to the film size makes it possible to provide a predetermined optical system suitable for constant observation even when the film size is different. Can be displayed (displayed) at the display size. Further, since the focus control is performed in conjunction with the set zoom magnification, a film observation image without blur can always be displayed on the monitor 3 even when the film size is different.

Note that the display size of the film observation image displayed on the display surface of the monitor 3 is desirably set so that, for example, the entire photographic area of the film completely fills the entire display surface. However, for example, when the aspect ratio of the shooting area of the film is different from the aspect ratio of the display surface, the display size to be displayed may be selected from a plurality of display sizes.

For example, when the aspect ratio of the filming area of the film is considerably different from the aspect ratio of the display surface, for example, the first mode in which the entire film image is displayed on the display surface (the longer mode fills the entire screen) The short mode has a non-display space around it) and the long mode (for example, the side) partially protrudes but the short mode displays the second screen in such a way that it fits on the entire display surface. The information may be displayed.

Further, in the present embodiment, even when the film size is different, the zoom magnification is set so that the film image is almost completely arranged on the imaging surface of the CCD 11, and the display surface of the monitor 3 is displayed on the display surface. Although the film image is displayed so as to be almost completely arranged on the display surface, the zoom magnification is set so that the film image is formed with a predetermined size smaller than the size which can be almost completely formed on the imaging surface of the CCD 11. In the case of the size, the film image may be displayed on the display surface of the monitor 3 so as to be almost completely arranged on the display surface. However, since the former effectively uses the pixels of the CCD 11, the image quality is better and more preferable.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a schematic configuration of a main part of a movable stage 6 'as a film holding means in a film observation device according to a second embodiment of the present invention. This embodiment is provided with position detecting means for detecting the position of a film holding member whose holding position is different depending on the film size. In the case of films having different sizes via the system controller 13 based on a detection signal of this position detecting means, Also allows automatic setting of zoom magnification and the like.

In the movable stage 6 ', a plurality of grooves 23 (in this embodiment, more clearly shown) provided for holding a film holding member 6b whose position changes in accordance with the film size in the stage main body 6a in FIG. The grooves 19a, 19b, and 19c are respectively formed to have a plurality of grooves 19a, 19b except for one of the grooves (for example, 19c). 5 are referred to as a front side portion and a rear side portion along the traveling direction of light).
1a and 31b are formed respectively.

The holes 31a and 31b are formed at positions where the movable film holding member 6b is shielded by the film holding member 6b when the movable film holding member 6b is housed in the grooves 19a and 19b.

Further, for example, light emitting element portions (transmitting portions) 32a and 32b of a phototriac are fixed to the front side portions of the pair of holes 31a and 31b, respectively, and pass through the holes 31a and 31b of the front side portion. Irradiation is performed on the pair of rear side surfaces (holes 31a, 31b).

Light receiving element portions (receiving portions) 33a and 33b of the phototriac are fixed to the rear side portions of the holes 31a and 31b, respectively, to receive light from the front side portion side. The outputs of the light receiving elements 33a and 33b of the photo triac are
Performs zoom control and focus control by regarding output signals of the light receiving elements 33a and 33b as a zoom operation signal (from the operation panel 14) in the first embodiment.

In this embodiment, two phototriacs are provided corresponding to, for example, three film sizes,
It is configured to output a 2-bit signal. The system controller 13 detects the size of the film held on the movable stage 6 'based on the content of the 2-bit signal, and performs focus control and zoom control. Other configurations are the same as those of the first embodiment.

Next, the operation of this embodiment will be described. When attaching the film 4 to the movable stage 6 ',
The leaf spring 18 at the end of the film holding member 6b is formed into a corresponding groove 19i (i = a to c) corresponding to the film size.
The output of the phototriac changes according to the storage position.

For example, in the case of FIG.
9b. In this case, since the light of the light emitting element 32a of the phototriac is not blocked by the film holding member 6b, the output signal of the light receiving element 33a of the phototriac outputs, for example, a Low signal.

The light emitting element section 3 of the phototriac
Since the light 2b is blocked by the film holding member 6b, the output signal of the light receiving element 33b that receives the light of the light emitting element 32b of the phototriac outputs a High signal.

The output signals of the light receiving element sections 33a and 33b are transmitted to the system controller 13, and the system controller performs a predetermined zoom operation so that the film image of the entire frame fills the screen of the monitor.

When a film of an arbitrary size among a plurality of different sizes is mounted, a zoom operation is automatically performed according to the size of the film. Therefore, it is necessary to specify a film size from the operation panel 14 or the like. The film image of one entire frame can be displayed on the monitor so as to fill the display surface of the monitor 3 (and in a focused state).

(Third Embodiment) FIG. 4 shows a third embodiment of the present invention.
It is a block diagram which shows the schematic structure of the video signal processing circuit 21 'of the video signal processing part 12 of the film observation apparatus which is Embodiment. In the present embodiment, for example, in the film observation apparatus 1 of the first embodiment, the optical zoom function is performed by an electrical zoom function without providing the zoom lens unit 8 and the zoom motor 8a. It was done.

The video signal processing circuit 21 'has a configuration in which a zoom processing unit 42 for performing an enlargement process is provided between the γ processing unit 27 and the contour correction unit 28 in the video signal processing circuit 21 of FIG.

More specifically, a CDS (correlated double sampling) processing section 22 for improving low-frequency noise with respect to a CCD output signal and an AG for automatically adjusting a signal level
A C section 23, an A / D converter 24 for converting the signals into digital signals, and a color separation processing section 25 for separating the signals into luminance and color difference signals
A white balance unit 26 for correcting a color tone, a γ processing unit 27 for performing γ correction, and a zoom processing unit 4 for performing an enlargement process.
2, an outline correction unit 28 that performs outline enhancement on the output signal of the zoom processing unit 42, and a D that converts the output signal into an analog signal.
/ A converter 29.

The zoom processing section 42 receives a zoom magnification coefficient corresponding to the film size from the system controller 13 and displays a film image of the entire frame on the monitor 3 by linear interpolation processing based on the received zoom magnification coefficient. Enlargement processing is performed to fill the screen.

The information on the film size may be inputted from the operation panel 14 to the system controller 13, or a means for detecting the film size may be provided as shown in FIG. You may input it.

Also, in this embodiment, since the zoom lens unit 8 is not used, it is not necessary to change the focus state even for films of different sizes.
The focus lens unit 9 may be one that performs focus adjustment by manual adjustment.

Next, the operation of the present embodiment will be described. A film image as a subject is formed on the CCD 11 in a focused state, but the size of the image formed on the imaging surface of the CCD 11 differs depending on the film size. For example, in the case of a film having the largest size, an image is fully formed on the imaging surface of the CCD 11, but in a case of a film having a smaller size, an image is formed on the center side of the imaging surface.

The C converted into an electric signal by the CCD 11
After the CDS processing, the level of the CD output signal is automatically adjusted by the AGC unit 23 and is converted into a digital signal by the A / D converter 24.

A / D-converted video signal of a film image of a subject is subjected to color separation processing, white balance is performed, and input to a zoom processing section 42. The zoom processing unit 42 receives a zoom magnification coefficient corresponding to the film size from the system controller 13 and, based on the received zoom magnification coefficient, causes the film image of one entire frame to fill the display surface of the monitor 3 by linear interpolation processing. The enlargement process is performed.

The video signal enlarged by the zoom processing unit 42 is edge-enhanced by the edge correction unit 28, converted into an analog signal by the D / A converter 29, output to the monitor 3, and output to the monitor 3. The film image of the entire frame is displayed so as to fill the entire display surface of the monitor 3.

[Supplementary Notes] Film observation in which a developed film image to be a subject is formed on an imaging surface of an imaging device via an optical system, converted into an electric signal, and the electric signal is output to a monitor, thereby displaying the film image on the monitor. A film observation apparatus, characterized in that the apparatus is provided with control means for changing the size of a film image displayed on a monitor to a predetermined display size in accordance with a plurality of film sizes.

2. A film holding unit capable of holding at least one of a plurality of types of films each having a photographing region of a different size, and an optical image of an image recorded in a photographing region of the film held by the film holding unit at an observation position. Focus adjusting means for performing focus adjustment for forming an image, a variable power optical system for changing the angle of view according to the size of the filming area of the film held in the film holding means, and a lens capable of being held in the film holding means In addition, for each of a plurality of types of film each having a shooting area of a different size,
Angle-of-view storage means for storing the angle of view of the variable-magnification optical system according to the size of the filming area of the film, and controlling the magnification of the variable-magnification optical system based on the angle of view stored in the angle-of-view storage means Control means for controlling the focus adjustment of the focus adjustment means based on the magnification of the variable power optical system.

3. A film holding unit capable of holding at least one of a plurality of types of films each having a photographing region of a different size, and an optical image of an image recorded in a photographing region of the film held by the film holding unit at an observation position. Focus adjusting means for performing focus adjustment for forming an image, a variable power optical system for changing the angle of view according to the size of the filming area of the film held in the film holding means, and a lens capable of being held in the film holding means In addition, for each of a plurality of types of film each having a shooting area of a different size,
Angle-of-view storage means for storing the angle of view of the variable power optical system according to the size of the filming area of the film, and a focus position for storing the focus position of the focus adjustment means corresponding to the angle of view stored in the angle-of-view storage means Storage means for controlling a magnification of the variable power optical system based on the angle of view stored in the angle of view storage means, and a focus position of the focus adjustment means based on a focus position stored in the focus position storage means And a control means for controlling the operation of the film.

4. 2. The film observation apparatus according to claim 1, wherein the control means for setting the magnification to a predetermined display size is an optical zoom. 5. 2. The film observation apparatus according to claim 1, wherein the control means for setting the magnification to a predetermined display size is an electronic zoom. 6. The control means for setting the magnification to a predetermined display size has a detection means for detecting a film size, and automatically sets the magnification to a predetermined display size by an output of the detection means. Film observation device.

7. Film observation in which a developed film image to be a subject is formed on an imaging surface of an imaging device via an optical system, converted into an electric signal, and the electric signal is output to a monitor, thereby displaying the film image on the monitor. A film observation apparatus, comprising: a device for setting a plurality of optical magnifications; and a control unit for setting a focus position according to the set value.

8. Film observation in which a developed film image to be a subject is formed on an imaging surface of an imaging device via an optical system, converted into an electric signal, and the electric signal is output to a monitor, thereby displaying the film image on the monitor. A film observation device, characterized in that the device is provided with control means for setting a predetermined zoom magnification according to a plurality of film sizes.

[0077]

As described above, according to the present invention, a developed film image to be a subject is formed on an imaging surface of an imaging device via an optical system and converted into an electric signal, and the electric signal is monitored. In a film observation device that displays a film image on a monitor by outputting the image to a monitor, control is performed to set the size of the film image displayed on the monitor to a predetermined display size according to a plurality of film sizes. Since the means is provided, even when a film having a different film size is mounted, the magnification can be set in accordance with the film size and displayed on the monitor in a predetermined display size suitable for observation.

Further, a film holding means capable of holding at least one of a plurality of types of films each having a photographing area of a different size, and an image recorded in the photographing area of the film held by the film holding means Focus adjustment means for performing focus adjustment for forming an optical image at the observation position, and a variable power optical system for changing the angle of view according to the size of the filming area of the film held by the film holding means, An angle-of-view storage unit that stores an angle of view of a variable-magnification optical system according to the size of the shooting region of the film, for each of a plurality of types of films each having a shooting region of a different size that can be held by the film holding unit. Controlling the magnification of the variable power optical system based on the angle of view stored in the angle of view storage means, and adjusting the focus of the focus adjusting means based on the magnification of the variable power optical system. And control means for controlling, even when a film having a different film size is held, the angle of view is changed according to the film size, and the focus adjustment required in accordance with the angle of view change Is also done,
It is possible to observe the image of the filming area of the film in a size suitable for observation and in a state where the focus is adjusted.

Further, a film holding means capable of holding at least one of a plurality of types of films each having a photographing area of a different size, and an optical system for an image recorded in the photographing area of the film held by the film holding means. Focus adjusting means for adjusting a focus for forming an image at an observation position; a variable-magnification optical system for changing an angle of view in accordance with the size of a shooting area of a film held by the film holding means; and the film For each of a plurality of types of films each having a photographing area of a different size that can be held by the holding means,
Angle-of-view storage means for storing the angle of view of the variable power optical system according to the size of the filming area of the film, and a focus position for storing the focus position of the focus adjustment means corresponding to the angle of view stored in the angle-of-view storage means Storage means for controlling a magnification of the variable power optical system based on the angle of view stored in the angle of view storage means, and a focus position of the focus adjustment means based on a focus position stored in the focus position storage means And control means for controlling the angle of view, even if a film having a different film size is held, the angle of view is changed according to the film size, and the focus required according to the angle of view change Adjustment is also performed so that the image in the shooting area of the film can be observed in a size suitable for observation and in a state where the focus has been adjusted.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a film observation device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a video signal processing circuit.

FIG. 3 is a diagram showing a main part of a movable stage according to a second embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a video signal processing circuit according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Film observation apparatus 2 ... Film observation apparatus main body 3 ... Monitor 4 ... Film 5 ... Illumination panel 6 ... Movable stage 6a ... Stage main body 6b ... Film holding member 6c, 6d ... Stage holding member 7 ... Mirror 8 ... Zoom lens unit 9 ... Focus lens unit 11CCD 12 Video signal processing unit 13 System controller 14 Operation panel 15 Zoom control ROM 16 Focus control ROM 17a, 17b Notch 18 Plate spring 19 Groove 21 Video signal Processing circuit

Claims (3)

[Claims] 1. A developed film image as an object is formed on an image pickup surface of an image pickup device via an optical system and converted into an electric signal, and the electric signal is output to a monitor. A film observing device for displaying a film image on a monitor according to a plurality of film sizes, wherein a control unit is provided for setting a magnification of a film image displayed on a monitor to a predetermined display size. apparatus. 2. A film holding means capable of holding at least one of a plurality of types of films each having a photographing area of a different size, and an optical system for an image recorded in a photographing area of the film held by the film holding means. A focus adjusting unit for adjusting a focus for forming an image at an observation position; a variable power optical system for changing an angle of view according to a size of a shooting area of a film held by the film holding unit; and the film. Angle-of-view storage means for storing, for each of a plurality of types of films, each having a photographing area of a different size, which can be held by the holding means, the angle of view of the variable magnification optical system according to the size of the photographing area of the film; The magnification of the variable power optical system is controlled based on the angle of view stored in the angle of view storage means, and the focus adjustment of the focus adjusting means is controlled based on the magnification of the variable power optical system. Film viewing apparatus characterized by comprising a control means. 3. A film holding means capable of holding at least one of a plurality of types of films each having a photographing area of a different size, and an optical system for an image recorded in a photographing area of the film held by the film holding means. A focus adjusting unit for adjusting a focus for forming an image at an observation position; a variable power optical system for changing an angle of view according to a size of a shooting area of a film held by the film holding unit; and the film. Angle-of-view storage means for storing, for each of a plurality of types of films, each having a photographing area of a different size, which can be held by the holding means, the angle of view of a variable magnification optical system according to the size of the photographing area of the film; A focus position storage unit that stores a focal position of the focus adjustment unit corresponding to the angle of view stored in the angle storage unit; and the variable power optics based on the angle of view stored in the angle of view storage unit. Controls the magnification of, based on said stored focal position at the focal position storage means, a film viewing apparatus, wherein the control means for controlling the focal position, to have the said focusing means.