JPH08172564A - Electronic viewer - Google Patents

Abstract

PURPOSE: To display an erected photographic image at a lateral position and a longitudinal position without a defect by varying the image pickup magnification of the lateral position and the longitudinal position of the photographic image with a simple operation. CONSTITUTION: A magnification device is made up of a spring 106 energizing a teleconverter lens 102 to a position on an image pickup optical axis and a pole 108 positioning the teleconverter lens to an image pickup optical axis and saved from the image pickup optical axis. A frame 103 holding the teleconverter lens 102 is supported by a bearing 116 to move the teleconverter lens 102 with respect to the image pickup optical axis. Furthermore, the teleconverter lens 102 is energized in the direction of the image pickup optical axis by an energizing force of the spring 106. The pole 108 inserted to a hole 24A of an end plate 24 is pressed into contact with an arm of the frame 103 to escape the teleconverter lens 102 from the image pickup axis in interlocking with the turning of a carrier holder 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic viewer, and more particularly, to an electronic device that images a negative or positive film or other object to be imaged by using a solid-state image pickup device and outputs a video signal obtained by the image pickup to a display device. Regarding the viewer.

[0002]

2. Description of the Related Art Conventionally, an electronic viewer of this type is provided with an image pickup optical system, a solid-state image pickup device (CCD), and an image processing circuit in a viewer body, and an optical image of an image pickup object incident through the image pickup optical system. Is imaged on the image plane of the CCD, the image signal output from the CCD is converted into a video signal by an image processing circuit, and the video signal is output to a display device such as a monitor TV.

The applicant of the present application has provided an electronic viewer of this type (trade name "FOTOVISION FV-7"). This electronic viewer holds a film carrier by a film carrier holding member, and picks up a photographic image of a negative film or a slide film stored in this film carrier with a CCD through an image pickup optical system. by the way,
Since the photograph image is a mixture of a photographed image in the horizontal position and a photographed image in the vertical position, for example, when the photograph image photographed in the horizontal position is taken as a reference, the photograph image taken in the vertical position is It is displayed tilted 90 degrees. Therefore, in such a case, the film carrier holding member is rotated 90 degrees with respect to the viewer main body so that the photographic image in the vertical position is displayed upright. Also, if the vertical photographic image is erected in the state of horizontal magnification,
The upper and lower parts of the photographic image are displayed as missing due to the effect of the aspect ratio.In this case, turn the zoom knob on the viewer to reduce the shooting magnification of the imaging optical system and I am trying to display it.

[0004]

However, the conventional electronic viewer has a drawback that the operation is troublesome because the zoom knob has to be operated every time the photographing position of the photographic image changes. The present invention has been made in view of the above circumstances, and an object thereof is to provide an electronic viewer capable of changing the photographing magnification with a simple operation.

[0005]

In order to achieve the above-mentioned object, the present invention is provided with a viewer main body, an imaging optical system provided in the viewer main body, and provided in the viewer main body.
A solid-state imaging device that outputs an image signal indicating an optical image incident through the imaging optical system, and a display device that is provided in the viewer main body and converts the image signal output from the solid-state imaging device into a video signal. A film carrier which is provided in front of the image pickup optical system of the viewer main body and is rotatably supported about the optical axis of the image pickup optical system and detachably holds the film carrier. A holding member, a converter lens arranged between the imaging optical system and the film carrier holding member, and provided so as to be movable back and forth with respect to the optical axis of the imaging optical system, and a rotation of the film carrier holding member. And a zooming mechanism for moving the converter lens forward and backward with respect to the optical axis of the image pickup optical system in association with the movement to change the photographing magnification.

[0006]

According to the present invention, when the film carrier holding member is rotated, the converter lens is moved forward and backward with respect to the optical axis of the image pickup optical system by the variable power mechanism in conjunction with the operation.
Therefore, in the present invention, since the photographing magnification can be changed only by rotating the film carrier holding member, the photographing magnification can be changed by a simple operation.

According to another aspect of the electronic viewer, when the film carrier holding member is rotated to a position for displaying a lateral photographic image in an upright state, the converter lens is linked with the rotating operation by the magnification changing mechanism. The photograph image is taken at the first photographing magnification by advancing or retracting. As a result, the photographic image in the horizontal position is displayed upright on the display screen and at a magnification such that the long side of the photographic image falls within the long side of the display screen but does not fall within the short side.

Further, when the film carrier holding member is rotated to a position for displaying a vertically oriented photographic image in an upright state, the converter lens is retracted or moved forward by the variable power mechanism in conjunction with the rotating operation. The photographic image is captured at a second photographing magnification. As a result, the vertical photographic image is
It is upright on the display screen and is displayed at a magnification such that the long side of the photographic image falls within the short side of the display screen.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an electronic viewer according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view of an electronic viewer according to the present invention as seen from the front side, and FIG. 2 is a perspective view as seen from the back side. Further, FIG. 3 shows a state in which the film carrier is rotated 90 degrees and the head cover is opened.

As shown in FIGS. 1 to 3, the electronic viewer 1
Reference numeral 0 has a substantially rectangular parallelepiped viewer main body 11. In the viewer main body 11, an image pickup optical system, a converter lens, a CCD as a solid-state image pickup device, an image processing circuit, and the like, which will be described later, are incorporated. The image pickup optical system is located above the viewer main body 11, and therefore, an opening portion for taking in an optical image is formed in the central portion of the upper surface of the viewer main body 11.

As shown in FIG. 3, a carrier holder 12, which is a film carrier holding member, is attached to the upper part of the viewer main body 11 together with the base 23 so as to be rotatable within a range of 90 degrees. The carrier holder 12 and the base 23 are substantially rectangular frame bodies, and the opening portion for taking in an optical image is formed in the center portion thereof. The details of the mounting structure of the carrier holder 12 and the base 23 will be described later.

A carrier insertion port 21 is formed on two parallel side walls of the carrier holder 12. A film carrier described later is removably inserted into the carrier insertion port 21. At a position below the carrier insertion port 21, a protective glass 22 is provided on the base 23 so as to close the opening of the carrier holder 12 (see FIG. 4). The protective glass 22 protects the image pickup optical system and the converter lens housed in the upper part of the viewer body 11. A positioning mark 21A indicating the entrance of the carrier insertion port 21 is engraved above the center of the carrier insertion port 21.

The carrier insertion port 2 of the carrier holder 12
A head cover 13 is provided on the other two side walls where 1 is not opened so as to be openable / closable by a hinge 32 provided on the base 23. An illumination lamp 31 is provided inside the head cover 13. When the head cover 13 is closed (see FIG. 1 or 2), it completely covers the upper opening of the viewer body 11. The head cover 13 is completely opened when the carrier holder 12 is rotated 90 degrees (see FIG. 3).
), The same height as the upper surface of the carrier holder 12 or slightly lower than this. The hinge 32 is made tight, and the frictional force on the hinge 32 holds the head cover 13 in the closed position or the open position at an arbitrary angle. Further, the maximum opening amount of the head cover 13 is restricted by the positioning slope 11a formed on the upper portion of the viewer body 11.

Leg portions 14 and 14 are provided on two wide and parallel side surfaces of the viewer main body 11, and the leg portions 14 and 1 are provided.
Reference numeral 4 is attached to the upper part of the viewer main body 11 by hinges 42, 42 so as to be openable and closable. The leg portion 14 extends along the side surface of the viewer main body 11 in the closed state, and the lower end portion thereof projects below the lower surface of the viewer main body 11.

A power switch 53, a power indicator 54, a negative black / white / negative / positive / selection switch 55, a hue / brightness are provided on the narrow side surface of the viewer main body 11 shown in FIG. Adjustment button 56, color /
An automatic brightness indicator 57, a brightness adjustment dial 58, and color tone adjustment dials 59R, 59G, 59B are provided. On the other side shown in FIGS. 2 and 3,
An unlock button 41, an S video output terminal 61, a V video output terminal 62, and a DC input terminal 63 are provided respectively.

FIG. 4 shows the carrier holder 12 and the base 23.
Is shown, and its sectional view is shown in FIG. A lens barrel 100 (see FIG. 6) holding an image pickup optical system is arranged below the base 23, and a teleconverter lens 102 which is a converter lens is held in front of the lens barrel 100. Frame 10
3 is arranged. The teleconverter lens 102 is provided so as to be movable back and forth with respect to the photographing optical axis 104, and a variable power mechanism for moving the teleconverter lens 102 will be described later.

A tubular portion 23A is formed so as to project from the central portion of the base 23, and the tubular portion 23A is rotatably fitted in a circular opening 11C opened in the upper end surface of the viewer body 11. A step portion is formed inside the cylindrical portion 23A, and the protective glass 22 is housed in this step portion. A recess 23B is formed on the surface of the base 23, and a guide 29 made of an elastic material is housed in the recess 23B. Rails 12a and 12a formed on the carrier holder 12 are swingably fitted into the upper and lower bent portions 29A and 29A of the guide 29. A rectangular window 29B for taking in an incident light image is opened at the center of the guide 29.

The peripheral edge of the circular opening 11C of the viewer main body 11 is sandwiched between the base 23 and the end plate 24,
The guide 29, the base 23, and the end plate 24 are fastened at three points by the set screw 25. The fastening state between the base 23 and the end plate 24 is relatively loose, which allows the carrier holder 12 (and the base 23) to be fastened.
Is rotatable with respect to the viewer body 11.

Grooves are formed at two positions on the lower surface of the end plate 24 at angular intervals of 90 degrees. Click spring 2
6 is fixed to the viewer main body 11 and the end plate 24
Touches the underside of. The carrier holder 12 is positioned at two angular positions where the click spring 26 fits in the groove of the end plate 24. As shown in FIG. 4, the base 23 is formed with two tubular portions 32A and 32B that form the hinge 32. Similarly, the head cover 13 is also formed with two tubular portions 32C and 32D. The tubular portion 32A is located between the tubular portions 32C and 32D, and the screw 33 is inserted into these tubular portions. The screw 33 is screwed into a female screw formed inside the tubular portion 32D. Further, a groove 32B 'that does not participate in the hinge function is formed in the tubular portion 32B. The cord 27 that supplies a current to the illumination lamp 31 provided on the head cover 13 is wired through the hole 23C of the base 23, the groove 23D formed on the inner surface of the base 23, and the groove 32B 'of the tubular portion 32B, and The head cover 13 is extended through the hole of the cylindrical portion 32D to the illumination lamp 31.

FIG. 7 shows an embodiment of the film carrier.
The film carrier 90 is composed of two plates 91 and 92 which are openably and closably connected by a hinge 93. One plate 91 is milky white and functions as a light diffusing plate.
A shallow recess 94 for accommodating the negative film F is formed on the inner surface of the plate 91. On the other plate 92, a window 95 is formed to expose a portion of each frame of the negative film F stored in the recess 94. A claw 96 and a stepped portion 97 are formed at two locations on the edges of both plates 91 and 92. The negative film F is stored in the recess 94 with both plates 91, 92 open, and both plates 9
When 1 and 92 are closed, the claw 96 is engaged with the step 97 and is held in the closed state.

Next, the variable magnification mechanism will be described. As shown in FIGS. 4 and 6, the magnification changing mechanism changes the photographing magnification by moving the teleconverter lens 102 forward and backward with respect to the photographing optical axis 104. The main components are a spring 106 for urging the position and the tele-converter lens 102 on the photographing optical axis 104, and a pole 108 for retracting from the photographing optical axis 104.

An arm 110 is extended to the frame 103 holding the teleconverter lens 102, and the arm 11
A pin 112, which serves as a rotating shaft, is formed so as to project at the tip of 0. The pin 112 is pivotally supported by a bearing 116 fixed to the lens pedestal 114, whereby the frame 103 is rotatable about the pin 112, and the teleconverter lens 102 advances and retracts with respect to the photographing optical axis 104. It is movable.

The spring 106 is arranged between the tip of the arm 110 and the bearing 116. One end of the spring 106 is locked to the arm 110, and the other end is locked to the bearing 116. As a result, the spring 10
The urging force of 6 urges the frame 103 in the clockwise direction in FIG. 6, that is, in the direction of the photographing optical axis 104. The tip of the pole 108 is in contact with the lower edge of the arm 110. The pole 108 also serves as a stopper that positions and regulates the teleconverter lens 102 on the photographing optical axis 104 against the urging force of the spring 106.

As shown in FIG. 4, the base of the pole 108 is fitted in a hole 24A formed in the end plate 24, and is movable with the rotation of the carrier holder 12. That is, when the carrier holder 12 is rotated in the clockwise direction in FIG.
Attaches the frame 103 to the spring 10 via the arm 110.
It can be rotated in the counterclockwise direction against the biasing force of 6. Further, when the carrier holder 12 is rotated 90 ° (see FIGS. 3 and 9), the pole 108 causes the teleconverter lens 102 to move away from the photographing optical axis 104.

As a result, the lens barrel 102 shown in FIG.
The photographing magnification of the optical image formed on the CCD 118 provided below the is changed. The image signal representing the optical image output from the CCD 118 is converted into a video signal by the image processing circuit 120 and guided to the V video output terminal 62 (see FIG. 3). The photographing magnification when the teleconverter lens 102 is positioned on the photographing optical axis 104 is as shown in FIG. 8 when the photographic image 122 in the lateral position of the negative film F stored in the film carrier 90 shown in FIG. TV screen 12
4 is set upright and the long side 122A of the photographic image 122 falls within the long side 124A of the television screen 124, but does not fall within the short side 124B.

The photographing magnification when the teleconverter lens 102 is retracted from the photographing optical axis 104, that is, when the carrier holder 12 is at the position shown in FIGS. The second photographic magnification of the vertical photographic image 126 of the negative film F shown in FIG. 7 is upright on the television screen 124 as shown in FIG. 9 and is lower than the first photographic magnification. Is set to.

Next, a method of using the electronic viewer configured as described above will be described. As shown in FIG. 8, first, the legs 14 and 14 are opened to support the electronic viewer 10 in an upright state, and the film carrier 90 accommodating the negative film F is inserted into the carrier insertion port 21. At this time, the head cover 13 is closed. Next, after the negative mode is selected by the changeover switch 55, the illumination lamp 31 is turned on by the power switch 53. As a result, the photographic image positioned in front of the imaging optical system 104 of the viewer main body 11 is illuminated by the illumination lamp 31, and the transmitted image light is captured by the CCD 118 via the imaging optical system. The captured photographic image is displayed on the television screen 124.

At this time, when the displayed photographic image is the photographic image 122 taken in the horizontal position (see FIG. 7), the carrier holder 12 is rotated with respect to the viewer main body 11 to the position shown in FIG. To do. As a result, the teleconverter lens 102 is positioned on the photographing optical axis 104 by the urging force of the spring 106 in association with the rotation of the carry holder 12, so that the photographic image 122 in the horizontal position stands upright on the television screen 124. The long side 122A of the photographic image 122 is displayed at a first shooting magnification that is within the long side 124A of the television screen 124 but not within the short side 124B.

If the photographic image is the photographic image 126 (see FIG. 7) taken in the vertical position, the carrier holder 12 is rotated 90 degrees to the position shown in FIG. As a result, the teleconverter lens 102 retracts from the photographing optical axis 104 against the urging force of the spring 106 in association with the rotation of the carry holder 12, so that the photographic image 126 in the vertical position is correctly displayed on the television screen 124. Standing and the long side 126A of the photographic image 126 is the short side 124 of the television screen 124.
It is displayed at the second shooting magnification that falls within B.

Therefore, according to the electronic viewer of the present embodiment, by simply rotating the film carrier holding member to the position where the photographic images in the horizontal position and the vertical position are erected, the proper photographing magnification can be obtained according to the position. Because you can switch,
It is possible to save the trouble of operating the zoom knob as in the conventional electronic viewer. Further, in the present embodiment, it is possible to display a photographic image that is upright and has no defect in both horizontal and vertical positions by a simple operation.

Furthermore, in this embodiment, by using the converter lens, the effect of zooming can be obtained even if a low-magnification image pickup optical system is used. In this embodiment, the teleconverter lens 102 is used to change the photographing magnification.
A wide converter lens may be used instead of 2.

[0032]

As described above, according to the electronic viewer of the present invention, the converter lens is moved forward and backward with respect to the optical axis of the image pickup optical system in conjunction with the rotational movement of the carrier holder holding member. Since I changed the shooting magnification, I can change the shooting magnification with a simple operation,
In addition, it is possible to display a photographic image in a horizontal position and a photographic image in a vertical position that are both upright and have no defects.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic viewer according to the present invention viewed from the front side.

FIG. 2 is a perspective view of the electronic viewer shown in FIG. 1 viewed from the back side.

FIG. 3 is a perspective view showing a state where a head cover of the electronic viewer shown in FIG. 1 is opened.

FIG. 4 is an assembled perspective view showing a carrier holder mounting structure.

FIG. 5 is a sectional view showing a carrier holder mounting structure.

FIG. 6 is a perspective view of a scaling mechanism applied to the electronic viewer according to the present invention.

FIG. 7 is a perspective view of a film carrier.

FIG. 8 is an explanatory diagram showing how to use an electronic viewer that displays a photographic image in a horizontal position.

FIG. 9 is an explanatory diagram showing how to use an electronic viewer that displays a vertically-oriented photographic image.

[Explanation of symbols]

 10 ... Electronic viewer 11 ... Viewer main body 12 ... Carrier holder 13 ... Head cover 100 ... Lens barrel 102 ... Teleconverter lens 104 ... Imaging optical axis 106 ... Spring 108 ... Pole 118 ... CCD 120 ... Image processing circuit 122 ... Lateral shooting Photo image 124 ... TV screen 126 ... Photo image taken in vertical position

Claims (2)

[Claims] 1. A viewer main body, an image pickup optical system provided in the viewer main body, and a solid-state image pickup provided in the viewer main body and outputting an image signal indicating an optical image incident through the image pickup optical system. An element, an image processing circuit provided in the viewer main body, which converts an image signal output from the solid-state image sensor into a video signal and outputs the video signal to a display device, and a position in front of the imaging optical system of the viewer main body. A film carrier holding member that is provided and is rotatably supported about the optical axis of the imaging optical system, and that detachably holds the film carrier, and is disposed between the imaging optical system and the film carrier holding member. And a converter lens provided so as to be movable back and forth with respect to the optical axis of the imaging optical system, and the converter lens in association with the rotation of the film carrier holding member. Electronic viewer, characterized in that consists of a variable power mechanism, the lens is moved forward and backward in the optical axis of the imaging optical system changing the photographing magnification. 2. When the photographic image of the negative film accommodated in the film carrier is in the horizontal position, the variable magnification mechanism erects the photographic image on the display screen of the display device and displays the photographic image. Moving the converter lens in conjunction with the rotation of the film carrier holding member so that the first photographing magnification is such that the long side falls within the long side of the display screen but does not fall within the short side of the display screen; When the photographic image of the negative film is in the vertical position, the photographic image is upright on the display screen and the long side of the photographic image is at a second photographing magnification within the short side of the display screen. 2. The electronic viewer according to claim 1, wherein the converter lens is moved in association with the rotation of the film carrier holding member.