JPH09166830A - Film scanner - Google Patents

Abstract

(57) Abstract: In a film scanner that obtains an image signal from a transparent original such as a photographic film and a reflective original such as a photographic print, a light source and a sensor are used in common to reduce the cost. Other devices can be placed on top of each other, and the structure is such that dust does not enter from the document insertion port for inserting a transparent document. An original insertion port 6a for a transparent original and a lid-like original support 2 for supporting a reflection original 3 are provided on the front surface of a scanner body 1. The document insertion port is covered by the document support table. The inserted transparent original is supported by the support roller 11. The light from the common light source 4 illuminates the transparent original or the reflective original through the rotatable reflection mirror 5. The light from the reflective original or the light from the transparent original that has passed through the reflective mirror 5 is guided to the same optical path 13 by the reflective mirror 5. In the same optical path, two types of lenses 7 and 8 that are exchanged by light from either a transparent original or a reflective original are provided. The common sensor 10 receives the light from this lens and converts the image information into an electric signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scanner which illuminates a transparent original such as a photographic film and a reflective original such as a photographic print with light and obtains image information as an electric signal from the transmitted or reflected light. Is.

[0002]

2. Description of the Related Art A reflection original is placed on a glass table or the like provided on an apparatus, illuminates light from the bottom, receives the reflected light from a sensor, and converts image information into an electric signal. There is a device called a bed scanner. In addition, there is already a device capable of obtaining image information from a transparent original such as a photographic film by attaching another attachment to the flatbed scanner.

Further, there is a film-dedicated scanner for obtaining image information exclusively from a photographic film as a transparent original. Then, in a film-only scanner, there is already a device that allows a film to be inserted from the front side of the device and has another device stacked on the device.

[0004]

However, in the above-mentioned conventional flat bed scanner, the attachment for obtaining the image information from the transparent original is provided with another light source or another sensor. For this reason, the device with the attachment is
Will have one light source or two sensors,
It made the whole price expensive. In addition, since the flatbed scanner places a reflection original on the top, it is impossible to stack another device on top of this device,
The degree of freedom in the location of the device was small.

Further, in the above-mentioned conventional film-only scanner, since the transparent original can be inserted from the front side of the apparatus, it is possible to stack another apparatus on top, and the degree of freedom of the storage location is great, but the reflection is not necessary. Since it is not possible to obtain image information from the manuscript, a separate scanner dedicated to the reflection manuscript is required.

A first object of the present invention is to reduce the cost of an apparatus and to allow another apparatus to be placed on top of the apparatus in a scanner capable of obtaining image information from both a transparent original and a reflective original. It is to be.

A second object of the invention is to prevent dust from entering through the transparent original insertion port when the apparatus is not used as a device for obtaining image information from a transparent original.

[0008]

In order to achieve the above-mentioned object, the invention of claim 1 has an original insertion port formed on the front surface of a scanner body for inserting a transparent original and an inserted transparent original. Supporting means for supporting, a document supporting base having a lid shape attached to the front surface of the scanner body and supporting the reflection original on the inner surface of the lid, and a common light source for illuminating the transmission original or the reflection original, A film scanner, comprising: a common sensor that receives light from a transparent original or a reflective original to obtain image information.

The invention according to claim 2 is the film scanner according to claim 1, characterized in that the document insertion port is covered by the closed document support base.

Further, the invention of claim 3 further comprises a box-shaped scanner body, a document insertion opening formed on the front surface of the scanner body for inserting a transparent document inside the scanner body, and the inserted transparent document. Supporting means for supporting the document, a document supporting table having a lid shape attached to the front surface of the scanner body and supporting the reflection original on the inner surface of the lid, and a transparent original or a reflection original supported and selected for illumination. A common light source for changing the direction of light from the common light source to enable the selection, a light guide means for guiding light from a transparent original or a reflective original to the same optical path, and the same A lens provided in the optical path, which can be exchanged depending on whether the light is from a transparent original or a reflective original, and a common sensor which receives light from the lens and converts image information into an electric signal are provided. It is a film scanner for the butterflies.

Further, the invention of claim 4 is characterized in that the supporting means is a supporting roller, the changing means is a rotatable reflecting mirror, and the light guiding means is also served by the reflecting mirror. 3 is a film scanner according to item 3.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
This will be described with reference to FIGS. 1 to 4.

The scanner main body 1 has a box shape, and a lid-shaped document support base 2 and a hinge portion 2 are provided on the front surface (left side in FIG. 1).
It is rotatably provided by a (FIG. 2, FIG. 4). The reflection original 3 is supported on the inner surface of the original support base 2. That is, the reflection original 3 is attached to the inner surface of the original support 2 and the original support 2.
It is supported between the protective glass 6 provided on the scanner body 1 side facing the.

A document insertion port 6a for inserting a transparent document 12 (FIG. 4) is formed inside the document support base 2, that is, on the front surface of the scanner body 1 when the document support base 2 is open. The document insertion opening 6a has a slit shape that runs in the vertical direction. Inside the scanner body 1 at the same height as the document insertion port 6a, the transparent document 1 inserted is inserted.
Two pairs of support rollers 11 that are support means for supporting 2 are vertically provided. The support roller 11 not only supports the transparent original 12, but also rotationally drives the intermittent transmission of the transparent original 12.

A common light source 4 is arranged on the right side of the center of the two pairs of support rollers 11. The common light source 4 emits light toward the left, that is, toward the supported transparent original 12. To the left of the two pairs of support rollers 11, a shaft 5 is provided as a changing unit that changes the direction of light from the common light source 4.
A reflection mirror 5 that is rotatable around a is provided. When the document supporting base 2 is closed, the reflecting mirror 5 is operated by an interlocking device (not shown) to change the direction of light from the common light source 4 and is supported by the document supporting base 2. In addition, the posture is such that the reflective original 3 is illuminated.

Further, when the document support base 2 is opened, an interlocking device (not shown) is activated to rotate the reflection mirror 5 to the posture shown in FIG.
It can serve as a light guiding means for guiding the same reflected light from the reflective original 3 to the same optical path 13.

Further, inside the scanner body 1, between the common light source 4 and the reflection mirror 5 is disposed at the center in the vertical direction.
Types of lenses 7, 8 are provided. The two types of lenses 7 and 8 are an imaging lens 7 and a converter lens 8 dedicated to the transmitted light from the transparent original 12. The converter lens 8 is for switching the angle of view in order to cope with the difference in image size between the originals 3 and 12. Both lenses 7, 8
Is attached around a bar 9 serving as a rotation axis, and when the lens 8 rotates around this bar 9, only the imaging lens 7 or the optical system of the imaging lens 7 and the converter lens 8 has the same optical path 13 Is set to.

At the end of the same optical path 13, the common sensor 1
0 is placed. The common sensor 10 is a CCD area sensor, and image information formed by the lenses 7 and 8 is converted into an electric signal.

The operation of this embodiment will be described below.

First, a case where image information is obtained from a reflective original (for example, photographic print) 3 in FIGS. 1 and 2 will be described. 2 is a side view of FIG.

First, the document support base 2 is rotated around the hinge portion 2a and opened upward. The reflection document 3 is supported on the inner surface of the opened document support base 2. Then, when the document support table 2 is closed again, the interlocking means (not shown) operates to bring the reflection mirror 5 into the posture shown in FIG. 1 and automatically energize the common light source 4. The light from the common light source 4 is reflected by the reflection mirror to illuminate the supported reflection original 3. The light reflected from the reflection original 3 passes through the imaging lens 7 and forms an image on the image sensor which is the common sensor 10. As a result, the common sensor 10
Can convert image information into electrical signals.

Next, a case where image information is obtained from a transparent original will be described with reference to FIGS. 3 and 4.

First, the document support base 2 is rotated around the hinge portion 2a to be opened upward. In this state, the transparent original 12 (for example, photographic film) is vertically inserted into the original support 2 inside the original insertion opening 6a exposed on the lower side of the front surface of the scanner body 1. Inserted transparent original 12
Are taken in and supported by each pair of support rollers 11 and are located to the left of the common light source 4. Then, the document support table 2
In the opened state, the interlocking means (not shown) operates, and the reflection mirror 5 rotates from the state of FIG. 1 to the state of FIG. 3 to change its posture. Further, the converter lens 8 rotates around the bar 9, and not only the imaging lens 7 but also the converter lens 8 is located on the same optical path 13. Then, the common light source 4 is automatically energized. When energized, the light from the common light source 4 passes through the transparent original 12, and the transmitted light is reflected by the reflection mirror 5 and guided to the same optical path 13.

In the same optical path 13, the light is taken by the image pickup lens 7
Not only passes through the converter lens 8, but also the common sensor 1
Image on 0. Thereby, the common sensor 10 can convert the image information into an electric signal.

As described above, according to this embodiment, the light from one common light source 4 selectively illuminates the transmissive original 12 or the reflective original 3 by changing the direction of the light by the reflective mirror 5. can do. Further, the reflection mirror 5 guides the transmitted light transmitted through the transparent original 12 to the same optical path 13 as the light from the reflective original 3 passes through, and the same optical path 13 is provided with two kinds of lenses 7 and 8. Since the light from the original can be imaged on the same common sensor 10, the number of sensors can be reduced. Since the light source and the sensor can be shared in this way, the cost of the entire device can be reduced.

Further, since the document insertion opening 6a and the document support base 2 are provided on the front surface of the scanner body 1, another device can be placed on top of the scanner body 1. Therefore,
The degree of freedom in the arrangement of the device can be increased.

Further, when the apparatus is not used, the document support base 2 is closed, and the document support base 2 covers the document insertion opening 6a. Therefore, dust is introduced from the document insertion opening 6a into the scanner body 1. Can be prevented from entering.

(Other Embodiments) In the above embodiments, the rotatable reflection mirror 5 is used as the changing means for changing the direction of the light from the common light source 4, but in other embodiments, A direction changing means for changing the direction of the common light source 4 itself may be provided. In this case, it is necessary to rotate and retract the reflection mirror 5 (which still functions as a light guide unit) itself so as not to cast a shadow on the reflection original 3. Further, it is possible to save the support roller 11 so as not to form a shadow, or to provide a support glass stand or the like instead of the support roller 11.

Further, in the above embodiment, the converter lens 8 is inserted in the same optical path in order to cope with the size difference between the image of the reflective original 3 and the image of the transparent original 12, but other embodiments. In the above, the converter lens 8 may not be used, and other means may be used. That is, the optical distance from the common sensor 10 to the reflective original 3 is calculated from the optical distance from the common sensor 10 to the transparent original 12.
The optical distances may be switched so that the optical distances are made larger by the amount corresponding to the difference in image size, and these optical distances may be switched by moving the imaging lens 7 in the optical axis direction of the same optical path 13. A moving mechanism for moving the imaging lens 7 is provided for the movement in the optical axis direction, that is, the focus adjustment.

Further, in the above embodiment, one rotatable reflecting mirror 5 includes a changing means for changing the direction of the light from the common light source 4 and a light guiding means for guiding the light to the same optical path 13. However, in other embodiments, these means can be provided separately.

[0031]

As described above, according to the first aspect of the invention, the light source for illuminating the transparent original or the reflective original is used as a common light source, and the image information is received by receiving the light from the transparent original or the reflective original. By using a common sensor as the sensor for converting into an electric signal, it is possible to reduce the number of light sources and sensors compared with the conventional one, and to reduce the cost. Further, a document insertion port for inserting a transparent document and a lid-shaped document support base for supporting a reflection document are both provided on the front surface of the device, so that another device can be provided on the device (film scanner). Can be stacked.

According to the second aspect of the present invention, when the image information is obtained from the transparent original, the transparent original is inserted from the internal document insertion opening by opening the lid-like original support. When the document insertion is not performed, the document support base is closed to prevent dust from entering through the document insertion port.

According to the third aspect of the invention, the common light source is further provided for the transparent original inserted through the original insertion port and supported by the supporting means or for the reflective original supported on the inner surface of the original support. By changing the direction of the light by the changing means, it is possible to selectively illuminate the transparent original or the reflective original with the common light source. Further, the light from the transparent original or the reflective original is guided to the same optical path by the light guiding means, and two kinds of lenses are provided in the same optical path to be used interchangeably, so that the image information is converted into the electric signal by the common sensor. It becomes possible to do. As a result, the same light source and sensor can be used, and the cost of the device can be reduced.
Further, both the original insertion port for inserting the transparent original and the original support for supporting the reflective original are provided on the front surface of the apparatus, and another apparatus can be placed on top of the apparatus.

In the invention of claim 4, the illuminated transparent original is further supported by a supporting roller which is a supporting means.
The light from the common light source is reflected by a rotatable reflecting mirror that is a changing unit to change its direction, and the reflecting mirror also serves as a light guiding unit for guiding the light from the transmissive original or the reflective original to the same optical path. As a result, a simple structure can be achieved and the cost of the device can be further reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional top view showing a state in which a scanner body according to an embodiment of the present invention is used to obtain image information from a reflective original.

FIG. 2 is a side sectional view of FIG.

3 is a top cross-sectional view showing a state where the scanner of FIG. 1 is used to obtain image information from a transparent original.

FIG. 4 is a side sectional view of FIG. 3;

[Explanation of symbols]

 1 Scanner Main Body 2 Original Document Support Plate 3 Reflective Original Document 4 Common Light Source 5 Reflective Mirror (Changing Means, Light Guide Means) 6 Protective Glass 6a Original Insertion Port 7 Imaging Lens 8 Converter Lens 10 Common Sensor 11 Supporting Roller (Supporting Means) 12 Transparent Original 13 Imaging optical path

Claims (4)

[Claims] 1. A document insertion port formed on the front surface of a scanner body for inserting a transparent document, a support means for supporting the inserted transparent document, and a lid-like member attached to the front surface of the scanner body. A document support table that supports a reflection document on this lid-shaped inner surface, a common light source for illuminating the transmission document or the reflection document, and a common sensor that receives image information from the transmission document or the reflection document to obtain image information, A film scanner characterized by having. 2. The film scanner according to claim 1, wherein the original document insertion port is covered by a closed original document support table. 3. A box-shaped scanner body, a document insertion opening formed on the front surface of the scanner body for inserting a transparent document inside the scanner body, a support means for supporting the inserted transparent document, and a scanner. An original support that has a lid-like shape attached to the front surface of the main body and supports the reflection original on the inside of the lid, a common light source for selectively illuminating the supported transmission original or reflection original, and Changing means for changing the direction of the light from the common light source to enable selection, light guiding means for guiding the light from the transparent original or the reflective original to the same optical path, and the transparent original or the transparent original provided in the same optical path. A film scanner including a lens that can be exchanged depending on which light from a reflection original, and a common sensor that receives light from the lens and converts image information into an electrical signal. . 4. The film scanner according to claim 3, wherein the supporting means is a supporting roller, the changing means is a rotatable reflecting mirror, and the light guiding means is also used by the reflecting mirror.