JPH08317282A - Image input device and image inputting method - Google Patents

Abstract

PURPOSE: To provide an image input device photographing a transmission type object even if an exclusive light source for transmission is not prepared as an other object. CONSTITUTION: A camera unit incorporating an optical system is provided with a leg part 5 provided with a pair of opening parts 61, a light source 3 for illumination and a light source 60 for transmission. By inserting the film holders 76 and 77 holding negative films 66 and positive films 75 in the pair of the opening parts 61, the light emission of the light source is switched from the light source 3 for illumination to the light source 60 for transmission. By changing the shapes of the film holders 76 and 77 according to the kinds of the negative films 66 and the positive films 75, negatives or positives are discriminated and the inversion operations of the negatives and positives are automatically performed. Thus, the photographings of the negative film 66 and the positive film 75 as transmission type objects can be easily performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input device for displaying a subject on a screen of a monitor.

[0002]

2. Description of the Related Art FIG. 13 is a perspective view showing the appearance of a conventional image input device. In the figure, reference numeral 100 is a camera unit that incorporates an optical system, an image sensor, and the like. The optical system of the camera unit 100 is composed of a fixed focus lens,
The main body of the camera unit 100 has been reduced in size and weight.

When the camera unit 100 is used for photographing a subject such as an original, the camera unit 100 is mounted on a tripod 101. The camera unit 100 is provided with a mounting portion for a tripod screw (not shown), which is fixed to the fixing portion of the tripod 101. A control unit (not shown) is connected to the camera unit 100, and the control unit is also connected to a monitor (not shown).

The image captured by the camera unit 100 is converted into a video signal by the image pickup device and displayed on the monitor via the control section. When shooting a transmissive subject, the transmissive light source 1 is separate from the camera unit 100.
04 is prepared and, for example, the tripod 101 to which the camera unit 100 is attached is placed on the light emitting surface of the transmissive light source 104.

Reference numeral 102 denotes a transmissive subject such as a negative film or a reversal (positive) film. The transmissive subject 102 is irradiated with light from the lower surface, and its image is input to the camera unit 100. Camera unit 10
Negative / positive reversing means (not shown) is provided at 0 so that the operator can perform a reversing operation as necessary.

The video signal of the camera unit 100 is normally designed to output a positive image.
By operating the positive inverting means, the video signal output on the screen of the monitor is switched. For example, when shooting a negative film, the negative / positive reversing means is operated to invert the video signal output to the monitor into a positive image. In the case of photographing a reversal film, if the video signal output to the monitor is inverted, the negative / positive inversion means is operated again to restore the normal video signal.

[0007]

However, when the transmissive subject 102 is photographed by using the conventional image input device, the operator is negative depending on the type of the transmissive subject 102 (negative film, reversal film). However, it was necessary to perform the positive inversion operation, which was troublesome.

Further, when photographing the transmissive subject 102, a dedicated transmissive light source 104 must be prepared separately from the image input device, which increases the overall cost and saves extra space. There was a problem such as the need.

Therefore, an object of the present invention is to provide an image input device capable of photographing a transmissive subject without separately providing a dedicated transmissive light source.

[0010]

In order to achieve the above object, an image input apparatus according to claim 1 of the present invention is provided with a camera unit in a main body, and an image of a subject photographed by the camera unit is displayed on a monitor. In the image input device for projecting the image, a leg provided on the main body and movable in front of the camera unit, a transmissive light source arranged on the leg, and the transmissive light source and the camera unit are provided between the leg. An attachment means for attaching a subject is provided, and the transmission light source emits light on the back of the attached subject, and an image transmitted through the subject is photographed.

An image input device according to a second aspect is the image input device according to the first aspect.
Negative image detection means for detecting that the image of the attached subject is a negative image in the image input device according to, and image inversion for inverting the negative image to a positive image when the negative image is detected. Means for displaying the inverted positive image on the monitor.

An image input device according to a third aspect is the image input device according to the first aspect.
In the image input device according to the above, an illumination light source arranged around the camera unit, an attachment detection unit that detects that the subject is attached to the attachment unit, and, if the detection is performed, from the illumination light source. And a switching unit that switches light emission to the transmissive light source.

An image input device according to a fourth aspect is the image input device according to the first aspect.
In the image input device according to the first aspect, the subject is a film sandwiched between film holders, and the attaching means attaches the film holder by inserting the film holder into a pair of openings formed on the side surfaces of the legs. And

An image input device according to a fifth aspect is the image input device according to the fourth aspect.
In the image input device according to the above, a film detecting means for detecting the type of the film held in the film holder is provided, and the film detecting means depends on whether a groove is formed in the film holder inserted into the opening. It is characterized by detecting.

An image input device according to a sixth aspect is the fifth aspect.
In the image input device according to the present invention, a groove is formed in the insertion direction of the film holder, a selection member slidable in a direction perpendicular to the insertion direction is fitted in the groove, and the film detecting means is fitted in the groove. It is characterized in that detection is performed according to the sliding position of the selection member.

According to a seventh aspect of the image input apparatus, in the image input apparatus according to the fifth aspect, a groove is formed on one of the front surface and the back surface of the film holder, and the film detecting means is formed on the surface on which the groove is formed. It is characterized in that it is detected accordingly.

The image input method according to claim 8 is an image input method for displaying an image of a subject photographed by a camera section provided on a main body on a monitor, wherein a leg section provided on the main body is provided in front of the camera section. Movably, attaching the subject between the transmissive light source arranged on the leg and the camera unit, illuminating the transmissive light source at the back of the subject, and capturing an image through the subject Is characterized by.

[0018]

In the image input device according to the first aspect of the present invention, when the image of the subject photographed by the camera section provided in the main body is displayed on the monitor, the leg section provided in the main body is provided in the camera section. The subject is attached between the light source for transmission arranged on the leg and the camera unit by means of attachment means, and the subject emits the light source for transmission at the back of the attached subject. Take an image that passes through.

[0019]

EXAMPLE An example of the image input apparatus of the present invention will be described. [First Embodiment] FIG. 1 is a perspective view showing the outer appearance of a camera unit of an image input apparatus according to the first embodiment. FIG. 2 is a sectional view as seen from the direction of the arrow EE in FIG. In the figure, 1 is a lens, 2 is a focus ring, 3 is an illumination lamp, 4 is a substantially cylindrical exterior part for enclosing an optical system such as the lens 1, 5 is a leg, 60 is a transmission lamp, and 61 is a pair of lamps. An opening, 6 is a monitor, and 7 is a controller.

The image captured by the lens 1 is converted into a video signal by an image pickup device (not shown) and is displayed on the monitor 6 via the control unit 7. If the image is out of focus, the focus ring 2 is rotated for adjustment.

Further, the optical system of the camera unit of this apparatus is composed of a fixed focus lens, and by omitting a complicated zoom mechanism or the like, the camera unit main body is made compact and lightweight. Specifically, the camera unit is formed in a substantially cylindrical shape having an outer diameter J of about 60 mm and a length K of about 100 mm. A plurality of spherical illumination lamps 3 are arranged in a circle around the lens 1 at the end of the exterior portion 4 on the lens 1 side.

The illumination lamp 3 is different from the front lens of the lens 1 in
Built in one step lower, it prevents the image from being affected by lighting. A protective cover 3a having a high light transmittance is provided on the front surface of the illumination lamp 3.

A cylindrical leg portion 5 is provided on the outer peripheral surface of the exterior portion 4 so as to be slidable in the direction of arrow L from the position shown in FIG. The leg portion 5 regulates the movement in directions other than the arrow L direction by a regulation means (not shown). A plurality of spherical transmission lamps 60 are arranged in a circle at the end of the leg 5 on the lens 1 side. In the state of FIG. 1 in which the leg portions 5 are housed, the illumination lamp 3 and the transmission lamp 60 are arranged so as to be substantially flush with each other.

A pair of openings 6 are formed on the outer peripheral surface of the leg 5.
1 is formed. The pair of opening portions 61 have a width F and a length D.
Is formed in the long hole (see FIG. 2). A convex hole 78 narrower than the width F is formed at one end in the length D direction. A film holder, which will be described later, is inserted into the pair of openings 61. The size of the film holder is regulated by the width F and the length D, and the insertion direction is regulated by the convex hole 78. The film holder will be described in detail later.

The pair of openings 61 are located at a predetermined distance B from the end surface of the leg 5 on the lens 1 side, and the image projected on the monitor 6 is in the upright position C, that is, passes through the optical axis 9. It is formed symmetrically with respect to the substantially vertical direction.

FIG. 3 is an explanatory view showing a cross section of the structure of the leg portion 5 of the camera unit. FIG. 1A shows a state in which the leg portion 5 is stored, and the position of the leg portion 5 in this state is set to the first position.
Called position. A plurality of hemispherical recesses are formed on a part of the outer peripheral surface of the exterior portion 4, and the first recess 32 is located at a distance M farthest from the lens 1, the second recess 33 is located at a distance N,
A third recess 34 is provided at the distance P. Two first recesses 32, two second recesses 33, and three third recesses 34 are provided at positions on the circumferential surface that are symmetrical with respect to the optical axis 9.

A position sensor 36 is provided on a part of the exterior part 4.
The sensor lever 36a is provided so as to partially project from the circumferential surface of the exterior portion 4. When the leg portion 5 is in the first position, the sensor lever 36a is tilted in the direction of the arrow Q by the inner side surface of the leg portion 5, and the detection signal is O.
It is in N state. The detection signal of the position sensor 36 is sent to a system controller (syscon) 24 described later.

On the inner surface of the cylinder of the leg portion 5, the exterior portion 4 is provided.
A hemispherical convex portion 35 is formed at a position corresponding to the concave portion. As shown in FIG. 3A, when the leg portion 5 is at the first position, the convex portion 35 of the leg portion 5 becomes the first concave portion 3 of the exterior portion 4.
2 is engaged and holds its position.

When the leg 5 is pulled in the direction of the arrow L from the state shown in FIG. 3A, the convex portion 35 of the leg 5 engaging with the first concave portion 32 rides on the outer peripheral surface of the exterior portion 4, The engaged state is released. Then, when the leg portion 5 is slid in the same direction as it is, the convex portion 35 falls into the second concave portion 33 formed in the exterior portion 4, as shown in FIG. Thereby, the leg portion 5 is held in this position. This position is called the second position.

When the leg 5 is pulled from the first position in the direction of the arrow L, the sensor lever 36a of the position sensor 36 is moved to the arrow S.
Standing up in the direction, the detection signal changes from ON to OFF.

By sliding the leg portion 5 to the second position and placing the camera unit with the tip of the leg portion 5 facing the placing surface 63 of the exhibitor, the camera unit can easily take a document image. . The shooting area of the camera unit at the second position is set so that a subject of a predetermined size is displayed on the entire screen of the monitor. In addition, the second camera unit
At this position, a transmissive subject can be photographed by inserting a film holder containing a 35 mm negative film or reversal film (hereinafter referred to as a positive film) into the pair of openings 61.

Further, when the film holder is inserted at the second position, the photographing area of the camera unit is set so that the developing area 24 × 36 mm of the film is displayed on the full screen of the monitor. The film holder is used for negative film or positive film depending on the type of film to be photographed. Then, by changing the shape of both film holders, it is determined whether the film is a negative film or a positive film, and the negative / positive inversion operation of the video signal output to the monitor is automatically performed. Further, the video signal in the normal state is set to output a positive image on the monitor screen.

Next, the structure of the negative film holder 76 will be described. FIG. 4 is an explanatory view showing the structure of the negative film holder 76. FIG. 9A is an explanatory view showing a hermetically sealed state, and FIG. In the figure, 71 is a pair of sandwiching lids, 72 is a hinge, 69 is a long window, and 66 is a negative film. One end of the pair of sandwiching lids 71 is rotatably supported by a hinge 72. The long window 69 is formed on both of the pair of sandwiching lids 71, and the dimension G is formed to a size that does not hide the developing region of the negative film 66, specifically, about 25 mm. The dimensions of the horizontal width H and the vertical width N in FIG.
Is formed to be slightly smaller than the length D and the width F.

Since the hinge 72 is formed so as to project from the end faces of the pair of holding lids 71, the orientation of the negative film holder 76 is regulated when it is inserted into the pair of openings 61.
When the negative film 66 is to be stored, the pair of sandwiching lids 71 are opened around the hinge 72 as shown in FIG. 7B, and the negative film 66 to be photographed is set. A pair of clamping lids 7
1 has a pin 68a formed on one side surface thereof and an engagement hole 68b formed on the other side surface thereof so that the pin 68a and the engagement hole 68b are engaged with each other when the negative film 66 is stored and folded. As a result, the holding state of the pair of holding lids 71 is maintained. The pin 68a and the engaging hole 68b
It is also possible to provide a plurality of negative film holders 76 in the direction of the arrow A (longitudinal direction), whereby the holding force of the negative film 66 can be increased, and the negative film 66 can be prevented from being displaced during storage. . The material of the negative film holder 76 is formed of plastic so that the negative film 66 to be stored is not scratched.

FIG. 5 is an explanatory view showing the structure of the positive film holder 77. The figure (A) is a sealed state, the figure (B)
Indicates a film storing operation. Since the basic structure is the same as that of the negative film holder described above, the same reference numerals are given and the description thereof is omitted.

In the figure, 74 is a pair of holding lids, 72 is a hinge, 69 is a long window, 73 is a long groove, and 75 is a positive film. One end of the pair of sandwiching lids 74 is pivotally supported by a hinge 72 so as to be rotatable. The long groove 73 is a pair of clamping lids 74.
Are formed on both hinge 72 side surfaces over the entire length in the direction of arrow A (longitudinal direction). Also, the long groove 73
Is formed to have a uniform width n with a depth that is about half the thickness m of one holding lid 74. The thickness m of the holding lid 74 is N / 2.

Further, the pair of holding lids 74 having the long window 69 and the long groove 73 have the same shape as the front and back in the sealed state of FIG. When housing the positive film 75, the hinge 7
Open the pair of nipping lids 74 around 2 and set the positive film 75 to be photographed. A pin 68a and an engagement hole 68b are formed on one side surface and the other side surface where the pair of holding lids 74 contact each other. When the positive film 75 is stored and folded, the pin 68a and the engagement hole 68b are formed. By engaging with 68b, the stored state of the pair of holding lids 74 is maintained. Further, the long window 69 is formed to have a size such that the developing range of the positive film 75 can be surely transmitted even if the positive film 75 is accommodated.

The material of the positive film holder 77 is plastic so that the positive film 75 accommodated therein is not scratched. As described above, the negative film 66 and the positive film 75 are inserted into the pair of openings 61 formed in the leg portion 5 of the camera unit while being housed in the dedicated film holders.

The surfaces of the negative film holder 76 and the positive film holder 77 are provided with indications 90 and 91 clearly indicating the films to be stored, so that the operator can clearly know the films to be stored.

FIG. 6 shows the state in which the negative film holder 76 and the positive film holder 77 are inserted and the negative film 6
6 is an explanatory diagram showing a shooting state of the positive film 75. FIG.
The figure (A) shows the inserting operation of the film holder,
The figure (B) shows the inserted state of the film holder, and the figure (C) shows the cross section seen from the arrow j-j line side of the figure (A).

To simplify the description, the negative film 66, the positive film 75, the negative film holder 76,
Regarding the positive film holder 77, the film 6 is distinguished without distinction between positive and negative unless there is a special effect.
6 and 75 and film holders 76 and 77 will be described.

As shown in FIG.
The film holders 76 and 77 accommodating 75 are inserted into a pair of openings 61 provided in the leg portion 5 of the camera unit. At the time of insertion, the hinges 72 provided at the ends of the film holders 76 and 77 are aligned with the convex holes 78 of the pair of openings 61. As a result, when the orientation of the hinge 72 and the orientation of the convex hole 78 are different, the film holders 76, 77
Becomes impossible. Also, the film holders 76, 7
7 can be inserted from either of the pair of openings 61. Further, a guide portion may be provided to facilitate insertion.

Reference numeral 64 is a first opening sensor, 65 is a second opening sensor, and 79 is a negative / positive reversal sensor. The first opening sensor 64, the second opening sensor 65, and the negative / positive reversal sensor 79 are provided in the vicinity of the pair of openings 61 formed in the leg 5, and are shown in FIG. As shown, the film holders 76 and 77 are provided on the path of the pair of openings 61. The negative / positive reversal sensor 79 is provided on the path of the long groove 73 when the positive film holder 77 is inserted.
When 6 and 77 are inserted, the presence or absence of the long groove 73 is detected.

Further, the first opening sensor 64 and the second opening sensor 65 are provided at positions corresponding to the planes of the holding lids 71 and 74 on the swinging end sides of the film holders 76 and 77, respectively. Film holders 76, 77 in the opening 61 of the
It is detected whether or not is inserted. The negative / positive reversal sensor 79 can be set at various positions.

In this embodiment, the first opening sensor 64,
Mechanical lever SW sensors are used for the second opening sensor 65 and the negative / positive reversing sensor 79. Since these mechanisms are well known, description thereof will be omitted.

The detection signals of the first opening sensor 64, the second opening sensor 65 and the negative / positive reversal sensor 79 are sent to the syscon 24.

FIG. 7 is a block diagram showing the electrical construction of the image input device. In the image input device, the first aperture sensor 64, the second aperture sensor 65, the position sensor 36, the lamp button 37, the negative / positive reversal sensor 79, the illumination lamp drive circuit 25, and the transmission lamp drive are provided in the system controller 24. The circuit 62 is connected. Lighting lamp drive circuit 2
An illumination lamp 3 is connected to the lamp 5. A transmission lamp is connected to the transmission lamp drive circuit 62.

FIG. 8 is a flow chart showing a photographing processing routine executed by the syscon 24. The system controller 24 determines the detection signal of the position sensor 36 (step S1). When the detection signal of the position sensor 36 is turned off,
The system controller 24 controls the illumination lamp drive circuit 25 to turn on the illumination lamp 3 (step S2). On the other hand, when the position sensor 36 is turned on, the illumination lamp 3 is turned off (step S3). After that, the illumination lamp 3 is turned on by the process described later.

The system controller 24 includes film holders 76 and 77.
Are inserted into the pair of openings 61, and the first opening sensor 6
When the detection signals of both the fourth and second aperture sensors 65 are switched to ON (step S4), the illumination lamp drive circuit 25 is switched to the transmission lamp drive circuit 62 (step S5).

As a result, the illumination lamp 3 is turned off and the transmission lamp 60 is turned on at the same time (step S).
6). First opening sensor 64, second opening sensor 6
In No. 5, the detection signal is switched regardless of whether the negative film holder 76 or the positive film holder 77 is inserted.

The first opening sensor 64 and the second opening sensor 65 are provided in each of the pair of openings 61, as shown in FIG. The detection signal is not switched unless the members 76 and 77 are securely inserted across the pair of openings 61. This prevents the film holders 76 and 77 from being inserted halfway.

When the negative film holder 76 is inserted, the first opening sensor 64 and the second opening sensor 6 are inserted.
Both signals 5 are turned ON, and the detection signal of the negative / positive inversion sensor 79 is also turned ON. It is determined whether or not the detection signal of the negative / positive reversal sensor 79 is ON (step S7), and when switched to ON, the video signal is reversed so that a positive screen is output to the monitor (step S8). As a result, the negative film 66 stored in the negative film holder 76 is inverted into a positive image and displayed on the monitor. After that, the illumination lamp or the transmission lamp is turned off by the process described later.

On the other hand, when the positive film holder 77 is inserted into the pair of openings 61, the signals of both the first opening sensor 64 and the second opening sensor 65 are switched to ON, but the positive film holder 77. Since a long groove 73 having a depth of m / 2 and a width of n is formed in the holding lid 74 of No.
The negative / positive reversal sensor 79 provided on the path of No. 3 is inserted without abutting. As a result, the detection signal of the negative / positive reversal sensor 79 is maintained in the OFF state.

The positive film 75 stored in the positive film holder 77 is displayed on the monitor as a normal positive image without inverting the video signal. In this way, the transmission lamp 60 is turned on only by inserting the film holders 76 and 77 into the pair of openings 61, and light is emitted from the lower surfaces of the films 66 and 75 as shown in FIG. You can clearly shoot the subject.

Further, by selectively using the film holders 76 and 77, negative / positive reversal is automatically performed, and the operation at the time of photographing a transmissive subject is simplified.

When the leg portion 5 is further pulled in the direction of the arrow L from the state shown in FIG. 3B, the convex portion 35 of the leg portion 5 engaged with the second concave portion 33 is attached to the outer peripheral surface of the exterior portion 4. Riding up and releasing the engaged state. Then, when the leg portion 5 is slid in the same direction as it is, the convex portion 35 of the leg portion 5 is inserted into the third concave portion 34 formed in the exterior portion 4, as shown in FIG.
Is depressed. As a result, the leg 5 is held, and this position is called the third position. At the third position, by placing the camera unit with the tip of the leg 5 facing the subject's placement surface 63, it is possible to take a document image as in FIG. 3B.

The photographing area at the third position is set so that a subject of a predetermined size can be projected on the entire screen of the monitor. Further, also in the third position, it is possible to photograph a transmissive subject (film) as in the second position. However, it is needless to say that the photographing area for projecting the transmissive subject at this position is wider than that at the second position.

Further, at the time of close-up photography, the focus ring 2 is automatically adjusted so as to be in focus in association with the pulling-out operation of the leg portion 5. For example, by forming a cam on the focus ring 2 and pulling out the leg portion 5 in the direction of the arrow L, the focus ring 2 is rotated along the cam shape. As a result, FIG. 3 (B) and FIG.
In the close-up shooting at the position (second position, third position) of the leg portion 5 in (C), it is possible to focus without adjusting the focus ring 2. At this time, the depth of field is set so that both the placing surface 63 of the subject and the developing surface of the negative film 66 or the positive film 75 inserted into the pair of openings 61 are in focus. The power of the transmission lamp 60 provided at the tip of the leg portion 5 is supplied from the camera unit body, and the body side (exterior portion 4) and the leg portion 5 are electrically connected.

For example, the outer surface 4 may be provided with an electrode surface, and the leg portion 5 may be provided with a contact piece that slides on the electrode surface, or a flexible cable may be used for connection. Further, the camera unit is provided with a lamp button 37 so that the illumination lamp 3 or the transmission lamp 60 can be turned on and off as needed. As shown in FIG. 1, the lamp pattern 37 is provided on the end surface of the exterior portion 4 on the side opposite to the lens 1. The signal of the lamp pattern 37 is sent to the system controller 24 (see FIG. 7), and the system controller 24 controls the illumination lamp drive circuit 25 or the transmission lamp drive circuit 62 to drive the illumination lamp 3 or the transmission lamp 6.
0 is turned on and off.

When the illumination lamp 3 is turned on, that is, in the states shown in FIGS. 3B and 3C, the lamp button 3
When 7 is operated (step S9), the illumination lamp 3 is turned off (step S10).

When the film holders 76 and 77 are inserted in the opening 61 and the transmission lamp 60 is lit (step S6), that is, in the state of FIG. 6B, the lamp button 37 is pressed. When operated, the transmission lamp 60
Is turned off (step S10).

Furthermore, when the position sensor 36 is in the ON state (step S1), the lamp button 37 is present when the illumination lamp 3 is off, that is, in the state of FIG.
When is operated (step S11), the illumination lamp 3 is turned on (step S12). When the legs 5 are in the first position, the film holders 76, 77 cannot be inserted. [Modification] The lamp button 37 turns on and off the illumination lamp 3 or the transmission lamp 60 as necessary, but the illumination lamp 3 and the transmission lamp 60 are individually turned on and off. You may. FIG. 9 is a block diagram showing a configuration of a lamp driving portion in the image input device of the modified example.

By providing an illumination lamp button 18 and a transmission lamp button 19, which will be described later, in a part of the camera unit, the respective lamps 3 and 60 can be turned on and off. The signals of the illumination lamp button 18 and the transmission lamp button 19 are always sent to the syscon 24 of the control unit 7.

FIG. 10 is a flowchart showing a ramp processing routine in the image input device of the modified example. When the illumination lamp button 18 is operated (step S25), it is confirmed whether the illumination lamp 3 is on or off (step S26). When the illumination lamp 3 is on, that is, the leg portion 5 is pulled out and the film holder 7
When Nos. 6 and 77 are not inserted, the illumination lamp drive circuit 25 is controlled to turn off the illumination lamp 3 (step S28). On the other hand, when the illumination lamp 3 is off,
That is, in a state in which the legs 5 are stored, the illumination lamp drive circuit 25 is controlled to turn on the illumination lamp 3 (step S29).

When the transmission lamp button 19 is operated (step S30), it is confirmed whether the transmission lamp 60 is on or off (step S31). When the transmission lamp 60 is turned on, that is, when the leg 5 is pulled out and the film holders 76 and 77 are inserted, the transmission lamp drive circuit 62 is controlled to turn off the transmission lamp 60 ( Step S32). When the transmission lamp 60 is off, that is, when the leg 5 is housed and the film holders 76 and 77 are not inserted, the transmission lamp drive circuit 62 is controlled to turn on the transmission lamp 60. (Step S33).

With this, it is possible to turn on the illumination lamp 3 and the transmission lamp 60 at the same time. For example, by turning on both of them at the same time when photographing the transmission type subject shown in FIG. Light is emitted from above and below,
It is possible to obtain an optimal lighting effect according to the pattern, color tone, and brightness of the projected subject, and it is also possible to create an image with a sense of shadow (stereoscopic effect). Further, means for adjusting the light amounts of the illumination lamp 3 and the transmission lamp 60 may be provided. Furthermore, the leg 5 is made of transparent plastic,
You can check the subject to be shot.

Further, although the leg portion 5 is drawn out in two stages, it is possible to increase the number of recesses in the exterior portion 4 and take a close-up photograph of a small subject such as a coin.

Furthermore, the first concave portion 32 and the second concave portion of the exterior portion 4
It is also possible to form the concave portion 33 and the third concave portion 34 over the entire outer peripheral surface of the exterior portion 4. Accordingly, when the leg portion 5 is pulled out to the second position and the third position, the opening direction of the pair of opening portions 61 can be changed, and the film holders 76 and 77 accommodating the films 66 and 75 can be attached to the camera. The unit can be rotated freely. For example, the image displayed on the monitor can be turned upside down. In this case, the means for supplying electric power to the transmissive lamp 60 is also composed of electrodes or the like that follow the rotation of the leg portion 5 and come into contact therewith.
The electric power can be surely supplied to 0.

In this embodiment, the light source is composed of the light lamp, but the light source is not limited to this. For example, a fluorescent lamp,
The same effect can be obtained by using an optical fiber or a light emitting diode.

Further, it is possible to provide a fixing member such as a tripod screw to the camera unit, so that the camera unit can be attached to a pan / tilt head which can be used for various product applications. [Second Embodiment] Next, an image input apparatus according to the second embodiment will be described. The negative / positive reversal operation in the first embodiment is automatically performed by properly using two types of film holders, but the invention is not limited to this. For example, one film holder may be provided with a negative film / positive film selection switch, and the negative / positive reversal operation may be automatically performed by switching the selection switch.

FIG. 11 is an explanatory view showing the structure of the film holder of the second embodiment. FIG. 1A shows the appearance of the film holder. 6B is a side view of the selection lever 81, and FIG. 6C is a cross-sectional view taken along the line U-U of FIG.
The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the film holder, the long groove 84 has the holding lid 8
0a is formed over the entire length in the direction of arrow A (longitudinal direction), and a selection lever 81 is provided in the groove. The depth of the long groove 84 is about half the thickness m of the holding lid 80a. The width T of the selection lever 81 is about half the width S of the long groove 84, and the selection lever 81 is movable within the width S of the long groove 84. The selection lever 81 is always biased to one end of the long groove 84. The upper surface 81a of the selection lever 81 does not protrude from the surface of the holding lid 80a,
It is formed on the same plane or slightly lower.

Same as arrow A of the selection lever 81 (longitudinal direction)
A pair of fixing claws 82 (only one side is shown in FIG. 11) are integrally formed at both end portions of the engaging portion and engage with fixing grooves 83 formed on both side surfaces of the holding lid 80a in the arrow A direction (longitudinal direction). Has been done. As shown in FIG. 6C, the fixed groove 83 is formed in two stages, a deep groove portion 83a formed at both ends in the longitudinal direction of the groove and a shallow groove portion 83b in the middle thereof. The fixed claw 82 of the selection lever 81 includes an arm portion 82a shown in FIG. 6B and a claw portion 82b shown in FIG. 7C, and the claw portion 82b engages with the fixing groove 83 to thereby hold the nipping lid. The selection lever 81 is positioned with respect to 80a and is prevented from falling off.

Further, the film holder is provided with a pair of openings 6.
The direction in which it is inserted into 1 is restricted by the hinge 72 formed so as to project from the end faces of the pair of holding lids, as in the first embodiment.

When the long groove 84 is formed only on one side of the holding lid 80 as shown in FIG. 7A, the insertion is limited to the direction of the arrow Y (one direction), but is not limited to this. Without holding the lids 80a, 80b on both sides of the long groove 84,
A selection lever 81 may be provided. Further, when forming the long groove 84 on only one side, it is necessary to limit the front and back directions, but by providing a convex portion on a part of the holding lid 80, erroneous insertion can be easily prevented.

Discrimination between negative film and positive film is made by the operator switching the selection lever 81. When the selection lever 81 is moved in the arrow W direction shown in FIGS. 8B and 8C, the claw portion 82b tries to ride on the shallow groove portion 83b from the one deep groove portion 83a. The operator further moves in the same direction while resisting the elastic force of the arm portion 82a. Then, the claw portion 82b falls into the other deep groove portion 83a. At the same time, the selection lever 81 also contacts the other end of the long groove 84.

For example, when the negative / positive reversal sensor 79 in the first embodiment is located on the Z line shown in FIG. 7B, the position of the selection lever 81 in the drawing is the position when the negative film 66 is stored. Yes, select lever 81 with arrow W
The position moved in the direction becomes the position when the positive film 75 is stored. These positions can be changed by the position of the negative / positive reversal sensor 79.

Further, the selection position may be specified in order to inform the operator which of the negative film 66 and the positive film 75 the position of the selection lever 81 corresponds to.

When the negative film 66 is photographed, the selection lever 81 is set to the position shown in FIGS. 8B and 8C, and the negative film 66 is stored in the film holder. When the film holder is inserted into the pair of openings 61 in this state, since the shape of the long groove 84 is closed by the selection lever 81, the negative / positive reversal sensor 79 contacts the selection lever 81. As a result, the detection signal of the negative / positive reversal sensor 79 is turned on, and the image of the stored negative film 66 is inverted into a positive image on the screen of the monitor and output.

When photographing the positive film 75,
The selection lever 81 is switched in the direction of arrow W, and the positive film 75 is stored in the film holder. When the film holder is inserted into the pair of openings 61 in this state, the negative / positive reversal sensor 79 is located on the path of the long groove 84, so that the film holder is inserted without contacting the negative / positive reversal sensor 79. As a result, the negative / positive inversion sensor 7
The detection signal of 9 maintains the normal OFF state,
The video signal output to the monitor of the stored positive film 75 is not inverted but is displayed as a normal positive image on the monitor screen. [Third Embodiment] An image input apparatus according to the third embodiment will be described below. The negative / positive reversing operation in the second embodiment is automatically performed by switching the selection lever provided on the film holder, but it is not limited to this. For example, the film to be stored may be determined by changing the shapes of the front and back surfaces of the film holder, and the negative / positive reversal may be automatically performed.

FIG. 12 is an explanatory view showing the outer appearance of the film holder of the third embodiment. The same components as those in the first and second embodiments are designated by the same reference numerals and the description thereof will be omitted.
In the figure, 40a and 40b are holding lids, 72 is a hinge,
73 is a long groove and 69 is a long window. Holding lids 40a, 40b
Has one end rotatably supported by a hinge 72,
The long groove 73 is formed only on one of the holding lids 40a. The long groove 73 is formed over the entire length of the holding lid 40a in the arrow A direction (longitudinal direction).

The shape of the long groove 73 is the same as that of the first embodiment. The position of the long groove 73 is the same as that of the negative groove shown in the first embodiment.
It is provided corresponding to the position of the positive reversal sensor 79.

When photographing the negative film 66, the negative film 66 is housed with the film holder with the back side of FIG. 12 facing up. In this state, attach the film holder to the pair of openings 6
The negative / positive reversal sensor 79 comes into contact with the film holder when it is inserted into the film holder 1. As a result, the detection signal of the negative / positive reversal sensor 79 is switched to ON, and the image of the stored negative film 66 is reversed to the positive image on the screen of the monitor and output.

When photographing the positive film 75,
With the film holder shown in FIG. 12, the positive film 75
To store. When the film holder is inserted into the pair of openings 61 in this state, the negative / positive reversal sensor 79 is located on the path of the long groove 73, so that the film holder is inserted without contacting the negative / positive reversal sensor 79. As a result, the detection signal of the negative / positive reversing sensor 79 is maintained in the normal OFF state, and the image of the accommodated film film 75 is not inverted from the video signal output to the monitor, but is a normal positive image as it is in the monitor. It is output to the screen.

[0085]

According to the image input device of the first aspect of the present invention, when the image of the subject photographed by the camera unit provided in the main body is displayed on the monitor, the leg portion provided in the main body is used. The camera unit is movable in front of the camera unit, and the subject is attached between the light source for transmission arranged on the leg and the camera unit by a mounting means, and the light source for transmission emits light on the back of the attached subject. However, since an image that transmits the subject is captured, it is not necessary to provide a separate light source for transmission, and the transmission-type subject can be easily captured. Further, it is not necessary to secure an extra space because of the separate transmission light source.

According to the second aspect of the image input device, the negative image detecting means for detecting that the image of the attached subject is a negative image, and the negative image detecting means when the negative image is detected. An image reversing unit for reversing an image into a positive image is provided, and the reversed positive image is displayed on the monitor, so that the negative and positive reversing operations can be automatically performed without bothering the operator. It is possible to improve the operability during shooting.

According to the image input device of the third aspect, the illumination light source arranged around the camera section, the attachment detecting means for detecting that the subject is attached to the attaching means, and the detecting means. In this case, since the switching means for switching the light emission from the illumination light source to the transmission light source is provided, the light source can be automatically switched, and the operability can be further improved.

According to the image input device of the fourth aspect, the subject is a film held between film holders, and the attaching means attaches the film holder to a pair of openings formed on the side surfaces of the leg portions. Since the film is attached by being inserted, the flexible film can be easily photographed.

According to the fifth aspect of the image input device, the film detecting means for detecting the type of the film held in the film holder is provided, and the film detecting means is provided in the film holder inserted into the opening. Since it is detected whether or not a groove is formed, the type of film can be easily determined by the presence or absence of the groove.

According to the image input device of the sixth aspect, the groove is formed in the insertion direction of the film holder, and the selection member slidable in the direction perpendicular to the insertion direction is fitted in the groove, Since the film detection means detects according to the sliding position of the fitted selection member, it can be divided into negative film, positive film, etc. without separately aligning the film holders.

According to the image input device of the seventh aspect, a groove is formed on one of the front surface and the back surface of the film holder, and the film detecting means detects the groove according to the surface on which the groove is formed. , The film holder can be divided into negative film, positive film, etc. by the difference in the simple shape of the back surface.

According to the image input method of the eighth aspect, in the image input method of displaying the image of the subject photographed by the camera unit provided on the main body on the monitor, the legs provided on the main body are provided on the camera unit. The subject is attached between the light source for transmission arranged on the leg and the camera unit so as to be movable forward, and the light source for transmission is emitted at the back of the subject to photograph an image transmitted through the subject. Therefore, it is not necessary to prepare a separate light source for transmission, and the transmission type subject can be easily photographed. Further, it is not necessary to secure an extra space because of the separate transmission light source.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of a camera unit of an image input apparatus according to a first embodiment.

2 is a cross-sectional view as seen from the direction of the arrow EE in FIG.

FIG. 3 is an explanatory view showing a cross section of a structure of a leg portion 5 of the camera unit.

FIG. 4 is an explanatory view showing the structure of a negative film holder 76.

FIG. 5 is an explanatory view showing the structure of a positive film holder 77.

6A and 6B are explanatory views showing the inserted state of the negative film holder 76 and the positive film holder 77 and the shooting state of the negative film 66 and the positive film 75.

FIG. 7 is a block diagram showing an electrical configuration of the image input device.

FIG. 8 is a flowchart showing a photographing processing routine executed by the syscon 24.

FIG. 9 is a block diagram showing a configuration of a lamp driving portion in an image input device of a modified example.

FIG. 10 is a flowchart showing a ramp processing routine in the image input device of the modified example.

FIG. 11 is an explanatory diagram showing a structure of a film holder according to a second embodiment.

FIG. 12 is an explanatory view showing the outer appearance of the film holder of the third embodiment.

FIG. 13 is a perspective view showing an appearance of a conventional image input device.

[Explanation of reference numerals] 1 camera section 3 light source for illumination 4 exterior section 5 leg section 7 control section 6 monitor 60 light source for transmission 61 pair of openings 64 first opening sensor 65 second opening sensor 66 negative film 75 Positive film 76, 77 Film holder 79 Negative / Positive inversion sensor

Claims (8)

[Claims] 1. An image input device for providing a camera section on a main body and displaying an image of a subject photographed by the camera section on a monitor, comprising: a leg section provided on the main body and movable in front of the camera section; A transmission light source disposed on the leg portion; and an attachment means for attaching the subject between the transmission light source and the camera unit, and the transmission light source emits light at the back of the attached subject, An image input device, which captures an image that passes through the subject. 2. A negative image detecting means for detecting that the image of the attached subject is a negative image, and an image inverting means for inverting the negative image to a positive image when the negative image is detected. 2. The image input device according to claim 1, further comprising: and displaying the inverted positive image on the monitor. 3. An illumination light source arranged around the camera section, an attachment detection means for detecting that the subject is attached to the attachment means, and when the detection is made, the illumination light source outputs the illumination light source. The image input device according to claim 1, further comprising a switching unit that switches light emission to the transmissive light source. 4. The subject is a film sandwiched between film holders, and the attaching means attaches the film holders by inserting the film holders into a pair of openings formed on the side surfaces of the legs. The image input device according to claim 1. 5. A film detecting means for detecting the type of the film held in the film holder is provided, and the film detecting means detects whether or not a groove is formed in the film holder inserted into the opening. The image input device according to claim 4, wherein 6. A groove is formed in the insertion direction of the film holder, a selection member slidable in a direction perpendicular to the insertion direction is fitted in the groove, and the film detection means is fitted in the selection member. The image input device according to claim 5, wherein the detection is performed according to the sliding position of the member. 7. The image input device according to claim 5, wherein a groove is formed on one of a front surface and a back surface of the film holder, and the film detecting unit detects the film according to the surface on which the groove is formed. . 8. An image input method for displaying on a monitor an image of an object photographed by a camera section provided in a main body, wherein a leg section provided in the main body is movable in front of the camera section, An image input method, wherein the subject is attached between the disposed light source for transmission and the camera unit, and the light source for transmission is emitted at the back of the subject to capture an image that passes through the subject.