WO2024047884A1 - Electronic magnifier - Google Patents

Abstract

An electronic magnifier for causing a camera video obtained by a camera capturing an object placed on a stage to be displayed on a display, the electronic magnifier comprising a control unit that applies image processing to the camera video and outputs the video after the image processing to the display and a camera holding mechanism that holds the camera, wherein the camera holding mechanism and the camera are displaced from the line of sight between the observer and the display.

Description

electronic magnifier

The present invention relates to an electronic magnifying glass used by individuals, particularly those with low vision and the elderly.

When electronic magnifiers are used for industrial purposes, there is generally a dedicated person who sets the object in front of the camera and projects the camera image onto a large screen or large display for multiple observations. It is assumed that a person will be observing the display. In order for multiple viewers to view the same display, it is necessary to keep a distance from each other, which inevitably results in larger displays.

On the other hand, electronic magnifiers are used to magnify and display minute information that is difficult for viewers, especially the elderly and people with low vision, to recognize in objects and documents such as books, newspaper articles, paintings, letters, postcards, and contracts. This has the function of making it easier for the observer to recognize the image.

When used for home or personal use, people, especially those with low vision or the elderly, can take pictures of minute information themselves with a camera, project it on a screen or display, and at the same time act as observers to observe it. This is necessary for recognizing minute information.

When used by people with low vision or the elderly, the display on the control panel needs to be large and easy to see and operate because of their low vision, and because some people have poor eyesight or physical strength, it is necessary to minimize the effort required. You need to be able to observe.

Additionally, using computers, smartphones, etc. requires passwords and other complicated operations, which places a heavy burden on people with low vision and the elderly. Therefore, it is desirable to have a dedicated device that can be used as easily as possible when the power is turned on.

It is also possible to use your smartphone as an electronic magnifier. Smartphones have become popular as devices that many people can use easily, but if we explain the act of using a smartphone's camera function to read an object (for example, a newspaper) and then magnify it, it can be explained as follows: It doesn't work the way you want it to, so you have to enter a password, select a camera from a number of menus, and understand the meaning of video, photo, portrait, and panorama displayed in the many submenus within that menu. You have to know how to select a photo, decide on the strobe/timer mode, and finally press the photo switch.

More specifically, (1) determine where you want to read the newspaper, etc. and roughly move the camera, (2) adjust the display magnification of the camera by pinching, (3) move the camera field of view, and (4) determine the field of view. (5) Check the location of the photo switch and press the photo switch (6) Press the photo review switch to display the photo you took and adjust the display magnification by pinching etc. (7) Read the article (8) Scroll If there is more to read, return to (1) and repeat the above steps.

The big burden on elderly people with this movement is that they are not used to having to do so many operations. However, in addition to that, in steps (1) to (5), move your smartphone to where you want to read the newspaper, check the content of the article on the smartphone screen, adjust the display position of the article, and switch the photo to avoid blurring. Press. During this time, it is also necessary to hold the smartphone at a certain height to prevent it from slipping. If you want to continue moving to the place you want to read, you will need to remember the location of your smartphone and move it around, which can be a heavy burden for observers with reduced physical strength. Furthermore, even if you manage to take a photo, the smartphone screen is small and, depending on the magnification, the information is likely to be displayed intermittently.

In addition, when many observers hold a smartphone in their hands for observation, the distance and position between the observer's eyes and the smartphone are constantly changing, and the ciliary muscles and eye muscles are required to focus and follow the direction. Always working. When the crystalline lens loses its flexibility or decreases in muscle strength due to aging, for example, an excessive load is placed on the ciliary muscle, causing eye strain.

It is possible to use the camera attached to a computer to obtain an enlarged image similar to that of a smartphone, but in addition to the same problems as the smartphone mentioned above, it is several times the weight and size of a smartphone, so it is necessary to take care not to lose focus. It is painful to hold a computer at a certain height.

In addition, it is also possible to read the document you want to read as a scanner image using a scanner, and then import the scanner image into a computer to obtain an enlarged image. In this case, in addition to operating a computer and files, it is also necessary to understand and operate a scanner. The operating procedure is fairly complex, and those who are not used to it will have a hard time. Additionally, scanners have limitations on the size, thickness, and hardness of documents, and judgment is required to determine whether or not they can be scanned.

As mentioned above, there are issues with observing enlarged images using conventional computers and smartphones.

On the other hand, there are devices that allow an observer to obtain an enlarged image simply by holding a camera over the material they wish to read. According to Patent Document 1, the configuration is as follows. That is, a main body case, a display section provided on the upper surface side of this main body case, a reading section provided on the lower surface side of this main body case, and a control for enlarging the image read by this reading section and displaying it on the display section. The structure includes a section. In this configuration, for example, the main body case is placed on top of a book, and the control section magnifies the image read by the reading section and displays it on the display section. That is, the electronic magnifying glass disclosed in Patent Document 1 has a camera and a display unit integrated, and is compact and highly portable.

Patent Document 2 describes, for example, a video camera body that images an object, converts the captured video into a video signal, and outputs the video signal, an arm that has one end attached to the video camera body, and other parts of the arm. a video camera support part to which the end side is attached; a mounting base to which the video camera support part is detachably mounted; an operating unit on the mounting base; and when the video camera support part is mounted on the mounting base, the video camera A document camera device is disclosed that includes a fall prevention mechanism that prevents a support portion from falling over. There is also a description of a connection between this document camera and a projector. In this article, the terms camera and video camera are synonymous.

Japanese Patent Application Publication No. 2010-161682 Japanese Patent Application Publication No. 2001-211350

In view of the above-mentioned circumstances, the present invention has been developed so that even people with weak eyesight, people with reduced eyesight, and the elderly can easily enjoy reading, painting, checking newspaper articles, etc., or checking the contents of letters, postcards, contracts, etc. The purpose is to provide an electronic magnifying glass that can be easily used.

The inventor of the present application believes that when an individual observes objects and materials such as books and newspapers by himself using an electronic magnifying glass,
Condition 1) The observer is positioned normally facing one side of the table,
Condition 2) The display must (1) keep the distance between the viewer and the display at a distance that will prevent the viewer's ciliary muscles, which control visual acuity, from becoming fatigued even when staring at it for a long time, and (2) keep the distance between the viewer and the display so that the viewer can easily view the material. When viewing the displays alternately, place the materials and display in front of the viewer at a distance that makes it easy for the viewer to focus so that the viewer feels less fatigue; Place something that can display the image of the actual field of view with sufficient resolution and display magnification.
Condition 3) When the object is placed in front of the observer and the observer moves the material, when looking at the material and the display alternately, there is little neck movement and eye movement, and there is little fatigue from repeated adjustments. To arrange.
Condition 4) For the observer, the area to be enlarged of the object to be observed is located approximately in front of the observer, and there are no obstacles when moving the object by hand to change the camera's imaging area. , to be easy. There should be no obstacles when the observer moves the camera and changes the imaging area easily.
Condition 5) The resolution of the camera must be such that the observer can distinguish the minute parts of the minute information that is being observed.
Condition 6) Neither the camera nor the camera support unit that attaches the other end of the arm to which one end is attached to the camera (1) do not obstruct the viewer's view of the display; (2) The arrangement should be such that there are few obstacles when moving the object relative to the camera. (3) When moving the camera, it is light and easy, and no correction operations other than movement are required.
Condition 7) Easy-to-operate control section and layout. Operation panel with large, easy-to-read display. When it is necessary to move the object, the operation section should not be hidden under the material or become an obstacle to operation.
Condition 8) It is possible to display guidelines on the display for the observer to compose and sign while looking at the enlarged image.
Condition 9) It is possible to select a light source with less halation based on the light source data.
Condition 10) The device must be lightweight and compact, and the installation area of the following parts must be as small as possible and easy to handle. (1) Display (2) Camera, camera arm, and camera support or camera arm stand (3) Control unit, operation unit, etc. The more the above conditions are satisfied, the more the observer will like the device to occupy less space and be more compact. Therefore, we came up with an arrangement that requires less physical movement and less visual adjustment, in other words, less physical strain.

[Problems with Patent Document 1]
The problem with Patent Document 1 is that there is a problem with operability. According to the configuration of Patent Document 1, a display unit, which is a display, is provided on the top side of the case of the main body, and a reading unit, which is a camera, is provided on the bottom side of the main body case. As a result, it is compact and has high portability. Ru.

On the other hand, in light of the above conditions, Condition 2) The display should be arranged with a display size that can display the image of the real field of view that is sufficient for the observer, taken by the camera, at a sufficient display magnification. However, in the configuration of Patent Document 1, since the main body is constructed by integrating the camera and the display, the main body must be easily moved manually over the material, which imposes restrictions on size and weight. In order to make it easier to understand the content of the material, it is sometimes desirable to set the camera's actual field of view to be wider, but the wider the camera's actual field of view, the smaller the display magnification displayed on the display. If the display is made larger, the display magnification can be increased, but the display becomes bulky, the weight of the document increases, and the operability decreases.

Conversely, if you narrow the camera's actual field of view and increase the display magnification, for example, if you place the device tilted to the right on top of horizontal text, the image displayed on the display section of the main body case The image will also be tilted, and in this state, if you scroll the screen in the reading direction of the text, that is, to the right (move the main body), the more you scroll to the right, the more the document you are currently reading will move diagonally upwards. It will disappear.

Therefore, this observer first moves the screen to the right in order to read the rest of the sentence, and then moves the screen upward in this state repeatedly until he is finally able to read this one line of text. . In other words, when the actual field of view is narrow, in order to read a few lines of text, one must perform the above-mentioned movement of left, right, up, and down, and condition 6) (3) of the 10 conditions for observing materials is met. Because of this, some kind of countermeasure was required, which placed a heavy burden on the observer. The same applies to vertically written text.

As described above, when observing, the observer must frequently focus and move the line of sight, in other words, exercise the ciliary muscles and eye muscles, each time it is necessary to move the device or adjust the field of view. tends to accumulate fatigue. Furthermore, when the crystalline lens loses its flexibility or weakens as we age, excessive load is placed on the ciliary muscles used for focusing, causing eye strain.

[Problems with Patent Document 2]
Patent Document 2 introduces a document camera device. This is a combination of a camera device and a projector, and since the screen is used as a display to magnify the imaged object, the display magnification can be increased and the camera field of view can be expanded, making it easier to grasp the general situation and display the image in an easier to read manner. I can do it.
Recently, some cameras have come out with HDMI (registered trademark) and USB outputs, allowing them to be connected to PCs, TVs, and LCD displays.
As shown in FIG. 1, this document camera device is defined by at least the following A+B.
A = a video camera body, an arm with one end attached to the video camera body, the arm is presumably an R-θ type, and a video camera support part to which the other end of the arm is attached,
B=A mount to which the video camera support is detachably attached, and a fall prevention mechanism provided on the mount to prevent the video camera support from falling when the video camera support is attached to the mount. Equipped with a document camera device.

Or, instead of B,
B1 = A mounting base for removably attaching this video camera support part, and a clamping fixing part provided on this mounting base and fixing the mounting base to the mounting target by pinching and tightening the mounting target. Document camera device.

Or, instead of B,
B2 = This video camera support is removably attached, and the video signal input from the video camera main body is converted into video light and projected, and the video camera is attached to the video camera support. A data projector with a document camera device, comprising: a projector body that forms a document stand together with a support section.

In Patent Document 2, the positions of the camera, display, operator, and observer are not clear, and it is assumed that there are multiple other observers for one object or camera operator. felt. That is, the operator on the camera side is almost exclusively focused on operating the camera, and the observer is only observing the display.

Therefore, it is up to the operator to consider how to make it easier for the operator to see the display, to adjust the arrangement of the operator and the materials, to make it easier to adjust the tilt angle of the camera relative to the materials, etc.

So, using the configuration of Patent Document 2, if the person operating the camera side is also the observer, what kind of arrangement is preferable, using a newspaper (approx. 56 cm wide x 80 cm wide) as a material? think about.

First, in A+B of Patent Document 2, a document camera device includes a video camera main body, an arm having one end attached to the video camera main body, and a video camera support portion having the other end of the arm attached. It consists of a mounting base for removably attaching the video camera support and a fall prevention mechanism.As a result, the video camera can be installed above the document, and the video camera support can be installed on the side of the document or behind the display. be.

Further, in A+B1 of Patent Document 2, the document camera device includes a video camera main body, an arm having one end attached to the video camera main body, a video camera support portion attaching the other end of the arm, and a video camera support portion attached to the other end of the arm. It consists of a mounting base for removably attaching the video camera support and a clamping and fixing part.

As a result, the video camera is connected to the arm, the video camera support, the mounting base, and the clamping fixing part, so that the video camera can be installed above the material, the video camera support can be installed on the side of the material, or behind the display. It is.

In A+B2 of Patent Document 2, a document camera device includes a video camera main body, an arm with one end attached to the video camera main body, a video camera support portion with the other end of the arm attached, and a video camera support with the other end attached to the video camera main body. A camera support part is detachably attached to the video camera body, and the video signal inputted from the video camera main body is converted into video light and projected. The present invention is configured as a data projector with a document camera device, including a projector main body forming a base.

As a result, in the document camera device, the camera is connected to the arm, the video camera support, and the projector body, and the camera can be installed above the document, and the video camera support can be installed on the side of the document or behind the display. be.

Considering the 10 conditions for observing materials in the above arrangement, if a screen or display that projects images from a projector is placed in front of the observer, and an object is placed in front of the observer, then If the part of the device that connects to the camera is placed in front of the observer, the camera, camera body, and the other end of the arm, one end of which is attached to the camera body, are within the field of view of the display that the observer sees. Condition 6) Either the camera support part to which the camera is attached can easily enter, and condition 6) Both the camera, the camera body, and the camera support part to which the other end of the arm whose one end is attached to the camera body are (1) Observation Do not obstruct the person's view of the display. Since it violates the above conditions, it is cumbersome to operate, and countermeasures are required.

In addition, if the part connected to the camera is placed in front of the observer, it will interfere with the observer's left and right movement of the arm. Because it violates the condition of ``certain things.'', it is cumbersome to operate, and countermeasures are required.

In addition, when the device of Patent Document 2 is arranged with the camera and the part connected to the camera on the right or left side of the observer as shown in FIG. (2) The object must be placed in such a way that there is little obstruction to the movement of the object relative to the camera.'' Therefore, the area of the object (for example, a newspaper approximately 56 cm long x 80 cm wide) that the observer would like to magnify should be placed horizontally within the field of view of the camera. When moving, if the camera and the part connected to the camera are placed within the range that satisfies the following condition: lateral movement range of the object > {width 80 cm - horizontal size of camera field of view}, an arm length of approximately 80 cm in a straight line is required. Therefore, countermeasures are required from the viewpoint of load capacity, fall prevention mechanism, and operation.

Additionally, further measures are required, such as setting limits on objects that are larger than 80 cm in width.

Further, as shown in FIG. 3, in the device of Patent Document 2, when only the camera and arm are placed in front of the display, that is, on the viewer's side, and other connecting parts are placed behind the display, it is possible to Because it is necessary to place the camera at the top, the camera and part of the arm will pass above the display, and the remaining part connected to the arm that passed above the display will be behind the display along with the operation part. 7) Contrary to the easy-to-operate control panel and arrangement, it becomes virtually impossible to operate the control panel. Therefore, the operation is troublesome, and improvements are required.

In addition, in the device of Patent Document 2, when the camera and arm are placed in front of the display frame, that is, on the viewer's side, and other connecting parts are placed below the display frame, the operation The section is placed under the outer frame of the display, and contrary to condition 7) of the 10 conditions for observing materials, the operation section and arrangement are easy to operate, and the operation is cumbersome, and improvements are required.

Furthermore, in the case of an R-θ type arm, regardless of the above-mentioned configuration, the distance or angle of the camera relative to the material changes each time the camera position is changed depending on the direction of rotation of the rotation axis built into the arm. Since position correction or angle correction is required, some kind of improvement is required, contrary to condition 4). Further, in the case of the R-θ type, the movable range of the camera is circular, and the left and right movement range is limited near the movable limit. In addition, the arm must be folded in order to move to the back, and the camera cannot be moved further back than the space required for folding, and the length of the arm is also longer to accommodate the above space, making it difficult to take into account the load capacity. is also necessary.

Particularly in the case of an arm that folds vertically, there is a high possibility that it will impede the observer's field of view, and some kind of countermeasure will be required. In other words, in the case of an R-θ type arm, some kind of countermeasure is required since condition 6) (3) of the 10 conditions for observing materials is violated.

Strictly speaking, when an observer attempts to observe a display placed in front of a display placed in front of a sample that has been focused on by a camera and observed, the distance between the observer and the display is This is the distance between the eyes or glasses of the viewer and the surface of the display.If this distance is a distance that causes less eye fatigue for the observer and is approximately constant, focusing by the adjustment action of the crystalline lens by the ciliary muscle will also be less tiring. Less is. The position of the flat display is fixed unless moved, and the position of the observer is also fixed at the edge of the stand, so the distance between the display and the observer is almost constant, reducing the burden on the ciliary muscles. Light and not tiring. This is the biggest advantage of observing the image on the display from the edge of the stand. If there is a camera or camera arm that obstructs the observer's view of the display, the viewer unconsciously uses the ciliary muscles and eye muscles, promoting eye fatigue. In this sense, it is important to avoid placing objects that obstruct the viewer's view of the display.

The distance that causes less eye fatigue varies from person to person depending on whether the user sees the naked eye, wears glasses, or age, and is something that should be managed by the individual. The distance can be adjusted by moving the display position.

According to the present invention, even people with weak eyesight, people with reduced eyesight, and the elderly can easily enjoy reading, painting, checking newspaper articles, etc., or easily checking the contents of letters, postcards, contracts, etc. An electronic magnifying glass is provided.

FIG. 2 is a side view and a top view of the arm and periphery of an electronic magnifying glass according to the prior art. FIG. 2 is a top view of an electronic magnifying glass according to the prior art. FIG. 2 is a top view of an electronic magnifying glass according to the prior art. 1 is a plan view of an electronic magnifying glass according to Embodiment 1. FIG. 1 is a side view of the electronic magnifying glass according to Embodiment 1. FIG. FIG. 3 is a side view of an electronic magnifying glass according to a second embodiment. FIG. 7 is a side view of an electronic magnifying glass according to Embodiment 3. FIG. 4 is a side view of an electronic magnifying glass according to Embodiment 4. FIG. 7 is a side view of an electronic magnifying glass according to Embodiment 5. FIG. 7 is a side view of an electronic magnifying glass according to a sixth embodiment. FIG. 7 is a side view of an electronic magnifying glass according to Embodiment 7. FIG. 8 is a side view of an electronic magnifying glass according to Embodiment 8. FIG. 8 is a front view of an electronic magnifying glass according to an eighth embodiment. 10 is a side view of an electronic magnifying glass according to a tenth embodiment. FIG. FIG. 7 is a plan view of an electronic magnifying glass according to Embodiment 10. FIG. 7 is a side view of an electronic magnifying glass according to Embodiment 11. FIG. 12 is a plan view of an electronic magnifying glass according to a twelfth embodiment. FIG. 7 is a front view of a display and an operation unit of an electronic magnifying glass according to a twelfth embodiment. FIG. 12 is a rear view of an electronic magnifying glass according to a twelfth embodiment. FIG. 7 is a block diagram showing functions of an electronic magnifying glass according to a thirteenth embodiment. FIG. 12 is a block diagram showing functions of an electronic magnifying glass according to a fourteenth embodiment. FIG. 12 is a plan view of an electronic magnifying glass for explaining a line drawing function of the electronic magnifying glass according to a fifteenth embodiment. 12 is an image displayed on a display for explaining a line drawing function of an electronic magnifying glass according to a fifteenth embodiment. 12 is an image displayed on a display for explaining a line drawing function of an electronic magnifying glass according to a fifteenth embodiment. It is a front view of a camera and a display explaining halation. It is a front view of a camera and a display explaining halation. It is a front view of a camera and a display explaining halation. FIG. 7 is a bottom view of a camera holding part of an electronic magnifying glass according to a sixteenth embodiment. FIG. 7 is a front view of a camera holding part of an electronic magnifying glass according to a sixteenth embodiment. FIG. 7 is a front view of an electronic magnifying glass according to a seventeenth embodiment. FIG. 7 is a side view of an electronic magnifying glass according to a seventeenth embodiment. FIG. 12 is a side view of an electronic magnifying glass according to Embodiment 18. FIG. 12 is a front view of an electronic magnifying glass according to Embodiment 18. FIG. 7 is a side view of a part of the electronic magnifying glass and a front view of a mobile illumination unit of the electronic magnifying glass according to the nineteenth embodiment. FIG. 7 is a side view of a part of the electronic magnifying glass and a front view of a mobile illumination unit of the electronic magnifying glass according to Embodiment 20; FIG. 7 is a front view of an electronic magnifying glass according to a twenty-first embodiment. FIG. 7 is a side view of a part of the electronic magnifying glass and a front view of a mobile illumination unit of the electronic magnifying glass according to Embodiment 21. FIG. 7 is a side view of a part of the electronic magnifying glass and a front view of a mobile illumination unit of the electronic magnifying glass according to Embodiment 22. FIG. 7 is a side view of a part of an electronic magnifying glass and a front view of a mobile illumination unit of an electronic magnifying glass according to Embodiment 23; FIG. 7 is a side view of an electronic magnifying glass according to a twenty-fourth embodiment. FIG. 12 is a front view of an electronic magnifying glass according to a twenty-fourth embodiment. FIG. 26 is a side view of an electronic magnifying glass according to a twenty-fifth embodiment. FIG. 26 is a front view of an electronic magnifying glass according to a twenty-fifth embodiment. FIG. 26 is a side view of an electronic magnifying glass according to Embodiment 26. FIG. 26 is a front view of an electronic magnifying glass according to a twenty-sixth embodiment. FIG. 26 is a side view of an electronic magnifying glass according to Embodiment 26. FIG. 26 is a front view of a display and a display stand of an electronic magnifying glass according to a twenty-sixth embodiment. FIG. 26 is a front view of a camera stand for an electronic magnifying glass according to a twenty-sixth embodiment. FIG. 26 is a top view of a camera stand for an electronic magnifying glass according to a twenty-sixth embodiment. FIG. 27 is a side view of an electronic magnifying glass according to Embodiment 27. FIG. 27 is a front view of a display and a display stand of an electronic magnifying glass according to a twenty-seventh embodiment. FIG. 27 is a front view of a camera stand for an electronic magnifying glass according to a twenty-seventh embodiment. FIG. 28 is a side view of an electronic magnifying glass according to a twenty-eighth embodiment. FIG. 12 is a side view of the vicinity of a camera holding portion of an electronic magnifying glass according to a twenty-eighth embodiment. 29 is a plan view of an electronic magnifying glass according to Embodiment 29. FIG. FIG. 12 is a side view of the vicinity of a camera holding portion of an electronic magnifying glass according to a twenty-ninth embodiment. FIG. 13 is a side view of an electronic magnifying glass according to Embodiment 30. FIG. 7 is a front view of an electronic magnifying glass according to Embodiment 31. FIG. 7 is a front view of an electronic magnifying glass according to Embodiment 31. FIG. 13 is a side view of an electronic magnifying glass according to Embodiment 31. FIG. 3 is a plan view for explaining the height of the fall prevention mechanism. FIG. 13 is a side view of an electronic magnifying glass according to Embodiment 32. FIG. 13 is a front view of an electronic magnifying glass according to Embodiment 32. FIG. 9 is a side view of an electronic magnifying glass according to a ninth embodiment. FIG. 7 is a front view of an electronic magnifying glass according to a ninth embodiment. FIG. 9 is a front view of a lower body of a display stand of an electronic magnifying glass according to a ninth embodiment. FIG. 9 is a top view of a display stand lower body of an electronic magnifying glass according to a ninth embodiment.

Hereinafter, modes for carrying out the present invention will be described. The electronic magnifying glass of the present invention includes a device for capturing an image of an object, that is, a document, with a camera, and displaying the camera image captured by the camera on a display. The objects of the present invention refer to paper media such as books, newspaper articles, advertisements, photographs, letters, postcards, contracts, pharmaceutical precautions, public distribution information, important materials, and other general materials.

[Embodiment 1]
The electronic magnifying glass will be explained based on FIGS. 4 to 6. The X-axis is the left-right direction as seen from the observer, the Y-axis is the front-back direction as seen from the observer, and the Z-axis is the up-down direction (vertical direction). A display stand is placed in front of the viewer, and the display is supported by the display stand. By operating an electronic magnifying glass, the viewer photographs the materials placed on the table with a camera, transfers them to the display, and reads the materials reflected on the display. Note that as long as the display is placed in front of the viewer, it may be installed on the same stand as the electronic magnifying glass, or it may be installed at a different location.

Such an electronic magnifying glass includes at least one light (not shown) that illuminates an object, a control unit that performs image processing on a camera image and outputs the image to a display, and a camera holding mechanism that holds the camera. It is equipped with

Specifically, the camera holding mechanism includes a camera arm to which the camera is attached, and a camera holding part to hold the camera. A camera holding portion is attached to one end of the camera arm (“a part of the camera arm” in the claims).

The camera holding section is configured to hold the camera so that the camera and the material are kept substantially parallel and the camera field of view is within the depth of focus. The camera holding section holds the camera so that the position and angle of the camera can be adjusted. This is a function used when it is necessary to correct the angle between the material and the camera. For example, the camera or the camera holder may be provided with a rotation mechanism that rotates the camera at an arbitrary angle in the horizontal direction. This allows the camera holder to adjust the angle of the camera with respect to the object. Of course, the camera holding section is not limited to a structure that rotatably holds the camera, but may be a structure that simply fixes the camera.

The camera arm shown in FIGS. 4 and 5 is a rod-shaped member. The attachment part (the "other part of the camera arm" in the claims), which is the other end of the camera arm, is locked to the upper outer frame of the display. Further, the camera is approximately parallel to the mounting surface of the stand. Therefore, the camera arm and the camera held by it are out of the line of sight of the viewer toward the display, ensuring visibility of the display.

If the observer wants to move the imaging range of the material, he or she moves the material using his or her hands. In this case, there is no theoretical impediment to the horizontal movement of the materials, and conditions are almost satisfied except for conditions 8) and 9) of the 10 conditions for observing materials, and the fact that the camera position is fixed. It is something.

[Embodiment 2]
As shown in FIG. 6, the camera arm is not limited to a fixed type, but may be a movable type. For example, the camera arm may be of the R-θ format. That is, the camera arm may have a configuration in which a plurality of rod-shaped members are connected by a horizontal rotation shaft that rotates or stops each other in the horizontal direction. In such a camera arm, the camera arm rotates in the horizontal direction at a joint where rod-shaped members are connected to each other. With the R-θ type camera arm, which has a joint that allows the camera arm to rotate in the horizontal direction, the camera moves horizontally and the distance between the camera and the material is constant, but the angle of the camera changes each time the camera moves. Since the angle changes, it is necessary to adjust the changed angle. Also, it should be noted that the limit of the range of motion is circular.

The R-θ type camera arm described above has a structure in which rod-shaped members are connected to each other so that they can rotate horizontally, but it is also possible to connect rod-shaped members not only horizontally but also rotatably in the vertical axis direction. A configuration in which they are connected may also be used. However, in this case, the camera moves vertically, which may obstruct the observer's field of view, so care must be taken.

[Embodiment 3]
FIG. 7 shows a modified example. The attachment part of the camera arm is locked to the outer frame on the side of the display. The camera arm is rod-shaped and approximately parallel to the mounting surface of the stand. As a result, the visibility of the display is ensured as in FIG. 4.

[Embodiment 4]
A modified example is shown in FIG. The mounting portion of the camera arm is locked to a display stand located below the outer frame on the lower side of the display. The camera arm is tilted upward toward the viewer, and is approximately parallel to the mounting surface of the stand from the middle. Therefore, the camera holder keeps the camera and the material parallel. In this manner, the camera arm may be configured to move the camera away from the material within a range that does not interfere with the observer's field of view. Of course, instead of being tilted like this, it may be made substantially parallel to the mounting surface of the stand as in FIG. 4. In any case, the visibility of the display is ensured as in FIG. 4.

[Embodiment 5]
A modified example is shown in FIG. The camera arm may be attached to the display via a holder attachment that is an element of the camera retention mechanism. The holder attachment is a member that holds the mounting portion of the camera arm and can be locked to the display. The holder attachment may be attached to the upper outer frame of the display as shown in Figure 9, or it may be attached to the side or lower outer frame of the display or to the display stand as shown in Figure 4-8. It may also be configured to be attached. By using the holder attachment, you can stably attach the camera arm to the display.

Furthermore, it is preferable to prepare a plurality of types of holder attachments, with the configuration of the portion that is locked to the display adapted to displays of various shapes and sizes. All types of holder attachments have the same structure for the part that holds the mounting part of the camera arm. According to such a holder attachment, a common camera arm and camera holder can be used for displays of various shapes and sizes.

In the electronic magnifiers illustrated in Figures 4-5, 7, and 9, the camera position is fixed, and the document is moved according to the desired location in the document. On the other hand, instead of moving the material, move the camera as shown in Figure 8, Figure 10-Figure 15, Figure 29-Figure 46, Figure 48-Figure 50, Figure 52-Figure 53, Figure 55, Figure 58-Figure 63. A camera movement mechanism may also be used. That is, the camera holding mechanism is provided with a mechanism for moving the camera, and by moving the camera instead of moving the material, the camera is allowed to photograph a desired part of the material. The observer may select a camera holding mechanism that allows the camera to be moved according to convenience, such as when it is difficult to move the material.

[Embodiment 6]
FIG. 10 shows an example of a camera holding mechanism. A camera holding mechanism that can move the camera back and forth is called a back-and-forth translation mechanism. The longitudinal linear motion mechanism includes a longitudinal linear motion guide and a longitudinal sliding block (hereinafter referred to as an anteroposterior block).

The front-rear linear motion guide is a member that guides the movement of the bar-shaped front-rear block, and a camera is attached to one end via a camera holder. The front and rear blocks are members that support the front and rear linear motion guide movably in the front and rear direction and can be fixed to the outer frame of the display. Further, the front-rear linear motion guide is approximately parallel to the mounting surface of the table. According to the longitudinal translation mechanism having such a configuration, the camera can be moved in the front-rear direction of the observer together with the longitudinal translation guide.

A camera that slides in a straight line with a front and back guide in the front and back direction will not work like an R-θ type, even if you slide the camera back and forth, once you align the document or the camera with the angle of the document's text arrangement. Unlike the case of an arm, there is no change in distance or angle between the camera and the material as it moves, so unless there is a difference in height between the materials, there is no need to correct the focal length of the camera or adjust the camera angle. In this way, the movement method of the camera that moves back and forth is simple and easy for the observer to understand.

The longitudinal linear motion mechanism shown in Fig. 10 has a configuration in which the camera is fixed to one end of the linear motion guide together with the camera holding section. In this state, it can be moved forward and backward using the front and rear blocks.

The configuration is not limited to this. A configuration may also be adopted in which camera holding sections are provided in the front and rear blocks and the camera is held in the camera holding sections. The front-rear linear motion guide supports the front-rear block movably in the front-rear direction and is fixed to the outer frame of the display. In such a front-back translational mechanism, the front and rear blocks can slide back and forth on a translation guide fixed to the display outer frame while holding the camera via the camera holding section. However, when moving the camera, the linear motion guide itself does not move, so the camera can be moved easily due to its small mass.

Furthermore, as another camera movement mechanism, an R-θ type movement mechanism that rotates the camera in a horizontal plane will be described. A horizontal camera that rotates or stops in the horizontal direction between the upper extension body provided on the upper outer frame of the display and the other end of the camera arm, which has a camera holder at one end of the camera arm and holds the camera with the camera holder. If a rotation axis is provided, it becomes an R-θ type camera arm. With the rotation angle of the camera arm perpendicular to the display screen, the camera can be placed at the farthest position from the display. Furthermore, if a horizontal rotation mechanism is provided between the camera holder and the camera, the camera angle can be corrected at a location corresponding to the rotation angle of the camera arm, making it easy to correct the camera field of view and the angle of the material.

[Embodiment 7]
FIG. 11 illustrates a left-right translation mechanism. The left-right translation mechanism is an example of a camera holding mechanism that can move the camera in the left-right direction when viewed from the viewer. The left-right translational mechanism is composed of a left-right translation guide and a left-right sliding block (hereinafter referred to as a left-right block).

The left and right linear motion guide is a guide member that slides the left and right blocks along a straight line. The left-right linear motion guide is fixed to the upper outer frame of the display so as to extend in the left-right direction when viewed from the viewer. Camera arms are fixed to the left and right blocks, and a camera is fixed to the camera arms via a camera holder. Further, the camera arm is approximately parallel to the mounting surface of the stand. According to the left-right translation mechanism having such a configuration, the camera arm and the camera can be moved in the left-right direction of the viewer by sliding the left and right blocks along the left-right translation guide.

For a camera that slides left and right, the angle of the camera and the angle of the material do not change even if the camera arm is moved left and right, similar to when the camera arm is slid back and forth as shown in Figure 10. There is no need to change or correct the camera angle. For the observer, the movement of the arm that moves linearly in the left and right directions is simple and easy to understand.

Although not particularly shown, the camera may be moved in the left-right direction and front-back direction of the viewer by combining the longitudinal translation mechanism of FIG. 10 and the left-right translation mechanism of FIG. 11. By moving the camera forward, backward, left, and right, the effort required to move the material relative to each other is reduced, and even if the camera arm is moved forward, backward, left, or right, there is no change in distance or angle to the material, so the focal length of the camera is corrected. There is no need to adjust the angle of the camera. In this way, the movement of the arm that moves forward, backward, left, and right is simple and easy for the observer to understand, and the burden of moving the material is eliminated.

The longitudinal linear motion mechanism and the left/right linear motion mechanism shown in FIGS. 10 and 11 have a configuration in which the longitudinal linear motion guide, the longitudinal block, the left/right linear motion guide, and the left/right block are manually moved. There is no limitation, and it may be performed automatically. For example, a motor may be used to move the camera. By performing camera photography together with motor control and processing the image, fields of view corresponding to the entire movable range of the camera are synthesized, making it possible to more easily enlarge the entire object and key points, which is even more convenient.

[Embodiment 8]
Further, as shown in FIGS. 12 and 13, the longitudinal translation mechanism and/or the horizontal translation mechanism may be provided below the lower outer frame of the display in a display stand that supports the display.

The display stand is equipped with a longitudinal translation mechanism. The longitudinal translation mechanism includes a longitudinal sliding block and a longitudinal translation guide, and includes a camera holder and a camera attached to the longitudinal translation guide.

Furthermore, the front and rear sliding blocks are attached to the display stand, allowing the camera to move back and forth. A camera holding mechanism with such a display stand can move the camera back and forth.

Further, the front-back sliding block may be attached to the left-right sliding block of the left-right linear motion guide attached to the display stand, and the camera holding mechanism having such a display stand cannot move the camera back and forth and left and right. can.

Even if the camera arm is moved forward, backward, left or right, there is no change in the angle with respect to the material, so there is no need to adjust the camera angle each time it is moved. For the observer, the movement of the arm that moves in the forward, backward, leftward and rightward directions is simple and easy to understand, and the burden of moving the material is eliminated.

[Embodiment 9]
[Display stand lower body]
Figures 64 to 67 show the camera holding mechanism including the linear motion mechanism, lighting, and fall prevention mechanism provided below the outer frame on the lower side of the display shown in Figures 12 to 13, separated as a display stand lower body. be. FIG. 64 is a diagram in which the lower bodies of the display stand are arranged horizontally in a straight line on the display stand.

As shown in FIGS. 64 and 65, the display stand includes display stand legs that support the display, and a large opening in the display lower body is formed in the display stand legs and the ceiling near the lower outer frame of the display. It is a structure. The inside of the display stand lower body opening in the display stand lower body has a structure through which the movable illumination body holder can pass. By separating the lower part of the display stand in this way, the display stand and camera can be separated. In FIG. 64, the width of the lower body of the display stand in the front-rear direction is shown to be the same as the width of the legs of the display stand, but the width is not limited to this. Further, the position of the display stand lower body in the front-rear direction may be at a position on the back side beyond the position of the display stand legs. Further, the width of the large opening of the display lower body may be set to a width that allows the material to be observed to pass from the front to the back of the viewer. As a result, part or all of the lower part of the display stand, the camera arm, camera holder, camera, etc. connected thereto can be placed behind the display in order, thereby minimizing the distance between the viewer and the display. .

FIG. 66 is a front view of the display stand lower body, and FIG. 67 is a top view of the display stand lower body.

Adoption of moving lighting objects is optional. The position of the display and the position of the display stand lower body, that is, the position of the camera, can be adjusted independently. Although adoption of the linear motion mechanism is optional, the left-right motion mechanism and the front-rear motion motion mechanism enable the camera to move left and right and back and forth, respectively.

The display can be positioned to reduce eye fatigue, and the lower part of the display stand can be positioned to make it easier to manipulate the materials.

A moving means may be provided on the display stand to facilitate adjustment of the position of the display. For example, although not shown, a plurality of wheels may be provided at the bottom of the display stand so that the wheels can be rotated when moving and locked when stopped.

Further, the display stand may be provided with a distance measuring means so that the distance between the display and the viewer can be measured. If it is possible to recognize the distance at which the observer is least fatigued at the time of distance measurement, it is possible to reproduce the distance at which the observer is least tiring and to respond to changes in the same distance.

The distance measuring means may measure the distance between the viewer and the display by installing a distance measuring sensor on the outer frame of the display, the display stand, or an extension thereof. An ultrasonic sensor may be used as the ranging sensor. The control unit may measure the distance using a communication function with a distance measuring sensor (not shown), store the result, and display it on the display according to the operation. Alternatively, using a tape measure such as a convex tape measure or tape measure, attach the hook at the tip of the tape to the hook for hanging the tape at the front of the display or display stand, as shown in Figures 64 and 65. At the same time, the other end of the tape is aligned with the position corresponding to the viewer's eyes, and the value on the scale is read to determine the distance between the display and the viewer. If the distance read is recorded as the distance between the viewer and the display, it can be used as a reference when reproducing the position of the display or changing the distance between the viewer and the display, and is also convenient for visual acuity management.

Furthermore, the display stand and the lower part of the display stand are of a size that allows them to be stored together, making it convenient for packaging during transportation, making it compact.

Additionally, a display stand or a display may be provided with a rotation mechanism (not shown) that allows the display to rotate in 90 degree increments. Furthermore, by providing a 90-degree rotation display switch on the operation and control sections, it is now possible to change the viewing angle of the display when reading vertically written text, making observation even more convenient. .

[Embodiment 10]
Although the above-described electronic magnifying glass has a configuration in which the camera holding mechanism is attached to the display and the display stand, the present invention is not limited to such a configuration. 14 and 15 illustrate the configuration of a camera holding mechanism having a camera stand.

The camera stand is equipped with a front-back linear motion mechanism. The longitudinal translation mechanism includes a longitudinal sliding block and a longitudinal translation guide, and includes a camera holder and a camera attached to the longitudinal translation guide.

Furthermore, the front and rear sliding blocks are attached to the camera stand, allowing the camera to move back and forth. A camera holding mechanism having such a camera stand can move the camera back and forth.

Further, the front-back sliding block may be attached to the left-right sliding block of a left-right linear motion guide attached to a camera stand, and a camera holding mechanism having such a camera stand can move the camera back and forth and left and right. can.

The distance by which the camera is slid back and forth is determined by the range of movement of the camera back and forth > {vertical 56cm - Vertical size of camera field of view} If the range is satisfied, it is possible to cover the vertical direction of the material only by moving the camera, without moving the material forward or backward.

If the camera has a high number of pixels, simply enlarging a portion of the captured field of view and displaying it on the display may provide sufficient image quality for observation. In this case, it is also possible to appropriately display the captured image data on the display by moving the display start position of the captured image data by operating the image movement switch of the operation unit and operating the enlargement/reduction switch.

Although a linear motion mechanism including a linear motion guide and a sliding block is illustrated, the present invention is not limited to such a linear motion mechanism. For example, a slide rail, a linear shaft, etc. may be used.

The camera stand has a camera arm, a camera holder, and a camera, and is placed between the viewer and the display. Additionally, the height from the mounting surface of the stand to the camera arm is lower than the bottom frame of the display. When placed between the display and the viewer, the height is preferably approximately 20 cm or less. This makes it possible to ensure visibility of the display.

Additionally, the camera stand has a fall prevention mechanism. The fall prevention mechanism is a flat member placed on the stand, and is a mechanism for preventing the entire camera stand from falling over regardless of the position of the camera. The force that prevents the fall prevention mechanism from falling is the fall moment calculated from the center of gravity of the entire camera stand, including the camera arm, camera holding mechanism, lighting, operation unit, and fall prevention mechanism, and the contact position of the fall prevention mechanism with the base. It is calculated by The fall prevention mechanism is preferably thin, easy to place materials on, and has a shape with few steps. This is to prevent wrinkles, unevenness, and other slopes from occurring in the material due to differences in level. If a fall prevention mechanism is provided within the camera's field of view, it is preferably a thin flat plate; if a fall prevention mechanism is provided outside the camera's field of view, at least a portion of the area where materials are placed should be in the camera's field of view. It is desirable that the height be approximately the same as the inside height. The range in which the materials of such a fall prevention mechanism are placed and the camera have a structure in which projections onto a plane perpendicular to the display and the table are approximately parallel to each other.

Such a fall prevention mechanism not only prevents the camera stand from falling over, but also prevents wrinkles, inclinations, and steps caused by the fall prevention mechanism from occurring on the material even when the document is placed on the fall prevention mechanism. Hateful. This makes it possible to obtain good camera images when photographing materials with a camera. Furthermore, it is possible to suppress illumination halation, and furthermore, there is no need for focusing at each step, making it easy to use.

[Embodiment 11]
FIG. 16 shows an extension for attaching the camera holding mechanism. The extension body is a member for combining existing members. The extension body is a reinforcing structure that is installed to reinforce the strength of the outer frame when attaching the other end of the camera arm to the outer frame of the display, or it is a reinforcing structure that is installed to reinforce the strength of the outer frame when attaching the other end of the camera arm to the outer frame of the display. A structure that achieves fixation. Here, an example of an extension body for attaching a camera holding mechanism to a display stand is illustrated.

FIG. 16 illustrates a stand extension body as a member that combines a display stand and a camera holding mechanism. The stand extension is attached to the top of the display stand on the back side of the display and holds the holder attachment. In this way, the holder attachment (camera holding mechanism) may be attached to the display stand via the extension body.

[Embodiment 12]
FIGS. 17 to 19 illustrate examples of extension bodies for attaching the operating section to the display stand. FIG. 17 is a plan view of the electronic magnifying glass, FIG. 18 is a front view of the display and the operation unit viewed from the viewer's side, and FIG. 19 is a rear view of the display viewed from the back side.

The electronic magnifying glass shown in the figure includes a stand extension 1 and a stand extension 2 attached to a display stand. The stand extension body 1 is a long member and is attached to the back side of the display stand so as to extend in the left and right direction when viewed from the viewer. The right end of the stand extension 1 projects outward from the display, and the stand extension 2 is attached to the right end. The stand extension body 2 is a long member and is attached to the right end of the stand extension body 1 so as to extend in the front-rear direction when viewed from the observer. Of course, the stand extension 1 and the stand extension 2 may be integrally formed.

An operating section is attached to the front end of the stand extension 2. The operation unit is a device that serves as a user interface for operating the electronic magnifying glass. The operation unit is provided with a switch, a touch panel, etc. for focusing on a subject and for causing the camera to take an image of a document. Since the operating section is detachably attached to the stand extension body 2 as described above, the observer can easily operate the operating section.

If a camera arm is provided to balance the center of gravity of the display, a fall prevention mechanism may be provided. The fall prevention mechanism is a mechanism for preventing the camera holding mechanism and/or the attached object from losing center of gravity balance and falling over. The force that prevents the fall prevention mechanism from falling is calculated from the center of gravity of the entire attached object including the camera arm, gravity, the fall direction, and the fall moment calculated from the ground contact boundary position of the fall prevention mechanism with the base. . The object to be attached is the device to which the camera holding mechanism is attached, and when attached to a display, the display (Figure 4-7, Figure 9-11), display stand (Figure 8, Figure 12-13), display Stand extension (Figure 14-15, Figure 16-19, Figure 53), fall prevention mechanism (Figure 7-13, Figure 16-17, Figure 19, Figure 22, Figure 30-39, Figure 47, Figure 51, or, if it is attached to a camera stand, the camera stand (Figure 14-15), camera arm, camera holder, and camera (Figure 4-17, Figure 22, Figure 28-33, Figure 36-46) provided with the camera holding mechanism. , Figures 48-50, Figures 52-63), Lighting (Figure 13)
, Figure 28-29, Figure 30, Figure 32-35, Figure 36-39, Figure 41, Figure 42-50, Figure 52), operation section and control section (Figure 4, Figure 13-15, Figure 17-19, Figure 22-24, Figure 30, Figure 33, Figure 36, Figure 41, Figure 43, Figure 45, Figure 47, Figure 51, Figure 53, Figure 55, Figure 61-63) Fall prevention mechanism (Figure 14-15, Figure 40-46, Figures 48-50, Figures 52-53, Figure 55, Figure 61), etc.

There is no particular limitation on the shape of the fall prevention mechanism, and for example, it may be a leg-shaped, column-shaped, or flat plate-shaped member that supports a display, display stand, camera arm, etc. so that it does not fall. It is particularly preferable that the fall prevention mechanism is a flat plate-like member so that the fall prevention mechanism does not interfere with the arrangement of materials.

As shown in FIGS. 7-9 and 16-17, when a fall prevention mechanism is provided in the field of view of the camera, it is desirable to have a thin flat plate shape. It is possible to suppress the formation of unevenness and wrinkles on the materials placed on the fall prevention mechanism. In such a fall prevention mechanism, the entire field of view does not need to be flat; if the ground contact boundary between the fall prevention mechanism and the table is a straight line, the position of the ground contact boundary may be within the range allowed by the fall moment. good. Even if this boundary exists in the middle of the field of view, if the fall prevention mechanism is a thin flat plate, good illumination without halation can be achieved by switching the illumination.

When installing a fall prevention mechanism outside the field of view of the camera, it is desirable that the height (thickness) of the fall prevention mechanism be as follows. That is, as shown in FIG. 61, the height of at least the range where the material is placed in the fall prevention mechanism (range R1 in FIG. 61) is approximately the same as the height of the material within the camera field of view (range R2 in FIG. 61). It is desirable to set the height to . That is, by reducing the height difference between the fall prevention mechanism and the stand, it is possible to suppress the formation of unevenness and wrinkles on the material placed on the fall prevention mechanism. In other words, if the height difference between R1 and R2 is small, even if unevenness or wrinkles are formed on the document placed on the fall prevention mechanism, the effect on the document within the field of view will be small, and as a result, good illumination without halation can be achieved by switching the illumination. can be realized. That is, if the difference in level between R1 and R2 is small, there is no need for the ground contact boundary between the fall prevention mechanism and the table to cover the entire area where the material is placed. In other words, the position of the ground contact boundary may be within the range allowed by the overturning moment.

[Embodiment 13]
FIG. 20 shows a block diagram showing the functions of the electronic magnifying glass. As an example, a case will be described in which an image of an object labeled "A" is imaged, subjected to predetermined image processing, and displayed on a display.

The camera is equipped with an objective lens, an autofocus section, an imaging section, etc. The camera is capable of controlling various operations such as autofocus and imaging by an imaging control section, which will be described later. In addition to the camera, the electronic magnifier is equipped with a light that illuminates the object. The lighting can be turned on, turned off, and brightness adjusted individually by the imaging control unit.

The operation unit is composed of operation switches for functions that can be operated by the observer, and includes operation switches for autofocus, enlargement, reduction, rotation, illumination, - (line), execution, etc. The operation section is capable of inputting an operation input, which is a signal representing a state such as that an operation switch is pressed, to the control section (operation input section) via a communication means. Although there are no specific limitations on the specific communication means, for example, wired communication means such as USB or wireless communication means such as Bluetooth (registered trademark) can be used.

The display may be for a computer or a home television (TV). If the display is a home TV, the communication standard of the home TV, such as a signal from a video output section, is transmitted to the home TV using wireless HDMI (registered trademark) or wireless USB. Alternatively, the home TV is provided with a receiving unit that receives the signal from the video output section, and the receiving unit converts the signal from the video output section into a signal format that can be received by the home TV and outputs it to the home TV. Also good. If the home TV and camera are located far apart, it is convenient to use wireless HDMI (registered trademark) or wireless USB, as it eliminates the need to run cables.

Note that the operation unit may be provided with a power switch (not shown) and an input channel switching switch, similar to a TV remote control. As a result, by pressing the switch on the control panel, the TV power is turned on, the TV channel is switched to the channel that receives the image output from the electronic magnifier, and the camera image is immediately displayed on the home TV. I can do things.

The control unit controls the camera based on the operation performed on the operation unit, and performs predetermined image processing on the camera image captured by the camera and displays it on the display. Specifically, the control section includes functional sections such as an operation input section, a function selection section, a video input section, a display control section, a control function display section, a composition section, a video output section, and an imaging control section.

The operation input section receives operation input from the operation section. The operation input input to the operation input section is interpreted by the function selection section, and transmitted to the imaging control section and the control function display section according to the operation input.

The video input unit includes a memory into which a video signal (camera video) is input from the camera, a memory that holds the camera video as a result of image processing performed on the camera video by the imaging control unit, and the like.

The display control section has an internal memory (not shown), and the internal memory stores the names of the operation switches of the operation section, the display contents of consent, and the submenus corresponding to each operation switch and the display contents of consent. The names of the operation switches on the operation section correspond to the functions of the imaging control section. The display control unit copies the display content of the operation unit from the internal memory to the image memory and converts it into an image. The display control unit copies the submenu to the image memory according to the selection and converts it into an image. These images are called operation images. Here, consent refers to symbols, names, and pictures that remind people of the name of the switch.

When a specific operation switch is operated on the operation unit, the display control unit selects an image memory area of the display content corresponding to the operation switch, and also displays the selected memory area in order to show proof of selection to the observer. An operation image is formed by attaching an identification mark or writing for differentiation by gradation display or color display.

Once the operation image is formed by the display control section, the control function display section outputs the operation image from the image memory via the composition section. The operation image is superimposed on the camera video by the compositing unit and displayed on the display via the video output unit.

The synthesis section receives the camera image output from the video input section and the operation image output from the control function display section, synthesizes them, and sends them to the video output section.

The video output unit converts the image from the compositing unit into a signal such as HDMI (registered trademark), USB, or WiFi, and outputs it to a display. On the display, as an example of an image, "A" written in the document imaged by the camera is displayed on the left half, and the names corresponding to the operation switches are distinctively displayed on the right half.

The imaging control section executes camera control, predetermined image processing, and lighting control in response to the operation input transmitted from the function selection section. Specifically, the imaging control section includes an autofocus section, an enlargement section, a reduction section, a rotation section, an illumination section, a line drawing section, an execution section, and other functions.
For example, if the operation input is "autofocus", the autofocus section causes the camera to autofocus. The enlarging unit executes image processing to enlarge the camera video input to the video input unit when the operation input is “enlarge”. The reduction unit performs image processing to reduce the camera video input to the video input unit when the operation input is “reduction”. The rotation unit performs image processing to rotate the camera image input to the video input unit when the operation input is “rotation”. The lighting unit controls lighting when the operation input is "lighting". The line drawing section (indicated by "-" in the figure) performs image processing to draw a line on the camera image input to the video input section when the operation input is "-" (line drawing). .

Furthermore, functions such as making the lines of characters thicker or darker, erasing image noise, etc. may be provided.

The execution unit causes the above-mentioned autofocus, image processing, lighting processing, etc. to be actually executed when the operation input made after the above-mentioned "enlargement etc." is "execution". In other words, when the observer operates the operation switch on the operation section to perform an operation such as "enlargement", the processing by the enlargement section etc. is not executed immediately, but when the operation input of "execute" is obtained, actually execute it.

Furthermore, each section of the imaging control section may obtain detailed parameters used for processing of each section from the operation section of the submenu. For example, the enlarging section may use the magnification of the camera image as a sub-parameter, and obtain this parameter from the operation of the operating section. Such parameters can be obtained, for example, as follows. The display control section forms an image for sub-parameter input, and the control function display section outputs the image to the video output section for display on the display. When the observer selects and inputs a sub-parameter via the operation switch of the operation section, the operation input section transmits the corresponding parameter to the function selection section, and the function selection section transmits the parameter to the imaging control section. In this way, each section such as the enlarging section can perform image processing such as enlarging using parameters given by the observer.

Note that in an electronic magnifying glass in which the camera can be automatically moved back and forth or left and right by a motor or the like, the imaging control section may include a camera movement section that controls the motor or the like. The operation switch is provided with an operation switch for moving the camera, and the display control section forms an operation image for moving the camera. Thereby, the observer can automatically move the camera by operating the operation section.

The operation of the electronic magnifying glass by the above-mentioned control unit will be explained. First, after turning on a power switch (not shown) to turn on the power, the power supply supplies power to the camera, control unit, and display. Further, after the power is turned on, the display is initialized, the control unit is initialized, and the image memory for superimposed display on the display is initialized. The contents of the image memory are output through the display control section. The contents of the operation immediately before the previous end may be restored.

The display timing of the operation image displayed on the display may be performed when the power is turned on or when any of the operation switches is pressed. When the power is turned on, the display control section writes a display pattern corresponding to each switch in the built-in memory into the image memory, and outputs an operation image of the image memory.

The timing for erasing the operation image from the display is when an appropriate amount of time has elapsed after the last operation switch was pressed, except for "-" (details will be explained later, but the line displayed on the display) You can do it later. When erasing "-", a line display erasing switch or a line erasing submenu may be provided.

If the operation image of the operation switch displayed on the display has been erased, if any of the operation switches is pressed, the display control unit will display the image immediately before the operation image was erased from internal memory in order to restore the operation status. The operation image is restored by copying the name of the switch of the operation section into the image memory, and is displayed on the display via the composition section.

The camera images the material placed on the stand by the observer and forms a camera image. The camera image is sent to the video input section, combined with the operation image, and displayed on the display.

The observer operates the operation unit as necessary. For example, when the "autofocus" operation switch is pressed, a red frame, for example, is displayed in the operation image displayed on the display to indicate that autofocus has been selected and can be executed. Next, when the observer presses the "execute" button on the operation switch, the autofocus section of the imaging control section starts, and the execution command is transmitted to the autofocus section of the camera, making the image obtained by the imaging section the sharpest possible. controlled in a similar manner.

Note that in the example of FIG. 20, the operating section and the control section are shown as being separated, but the operating section and the control section may be integrated.

[Embodiment 14]
FIG. 21 shows a modification of the operating section. In the modification of FIG. 21, the operation switches of the operation unit in FIG. 20 are configured as ↑ (upward arrow) ↓ (downward arrow) → (rightward arrow) ← (leftward arrow) ○ (circle). Of these operation switches, ↑↓→← is an example of a selection switch for selecting one from the list of operation images displayed on the display. Furthermore, the symbol ◯ among the operation switches is an example of an execution switch for executing the function section corresponding to the selected operation image. When the power is turned on, etc., the display control section copies the names of selectable switches from the internal memory to the image memory, forms an operation image, and displays the operation image on the display via the composition section.

When the observer presses the selection switch (↑↓) while looking at the display to move through the selectable switch names (function sections), the operation input section recognizes the pressed switch and notifies the function selection section, The function selection section conveys the recognized switch contents to the display control section, and in order to show proof of the selection to the observer, the function selection section attaches an identification mark to the selected memory area or writes information for differentiation by gradation display or color display. to form an operation image.

As soon as the operation image is formed, the control function display section outputs the operation image to the display via the composition section. By pressing the execution switch at the location of the differentiated switch name on the display, the imaging control unit executes the function corresponding to the differentiated switch.

If the selected menu has a submenu, use the selection switch (←→) to display the submenu. The display control section copies the display corresponding to the submenu from the internal memory to the image memory to form an operation image, and outputs the operation image to the display as soon as the operation image is formed.

In order to show proof of the selection to the observer, an operation image is formed by attaching an identification mark to the selected memory area or writing for differentiation by gradation display or color display. As soon as the operation image is formed, the control function display section outputs the video in the image memory to the display via the composition section. By pressing the execution switch at the location of the differentiated switch name on the display, the imaging control unit executes the function corresponding to the differentiated switch.

The timing for erasing the displayed operation switches from the display may be done after an appropriate period of time has passed after the last operation switch of any of the operation switches is pressed, except for "-". When erasing "-", a line display erasing switch or a line erasing submenu may be provided.

[Embodiment 15]
The line drawing function will be explained using FIGS. 22 to 24. The line drawing function is one of image processing realized by the imaging control unit, and is a function of drawing lines on a camera image.

FIG. 22 shows an example of the material displayed on the display before the line drawing function is executed. The letters ``name'' are printed on the materials, but no guide lines are printed. This situation is shown in FIG.

FIG. 24 shows an example of the material displayed on the display after the line drawing function is executed.

When the observer operates the operation section to select the operation switch "-" and presses the execution switch, the operation input section recognizes the pressed operation switch and transmits it to the function selection section, and the function selection section recognizes and presses the execution switch. The selected operation switch is transmitted to the display control unit. The display control section erases unnecessary display on the image memory, writes a horizontal line passing near the center of the display on the image memory, and outputs the contents of the image memory as a video.

The synthesizing section synthesizes the video output from the image memory and the video signal from the video input section into which the video signal from the camera is input, sends it to the video output section, and sends it to the display, as shown in FIG. A horizontal line passing near the center of the display is displayed as a guide line.

Furthermore, a submenu may be provided in the operation switch "-" menu to adjust the position of the horizontal line up or down. Lines are very useful as they serve as a guide when signing documents. Furthermore, if you place a piece of paper for temporary writing on top of the document, a horizontal line guide can be displayed on the paper, so you can use the paper for temporary writing to practice signing. Furthermore, a new operation switch "|" menu may be provided to display a vertical line. This is useful when writing or practicing vertically written documents such as New Year's cards.

When erasing the line "-", a line display erasure switch or line erasure submenu may be provided.

The electronic magnifying glass may be equipped with a camera position detection means. In electronic magnifying glasses, the position of the camera can be changed using a front-back translation mechanism or a left-right translation mechanism. The position detection means detects the position of the camera in such an electronic magnifying glass.

For example, the position detection means can include X and Y distance measuring sensors that can detect the positions of the front and rear blocks or left and right blocks moved from the linear guide. To know the relative positional relationship between the front and rear blocks or the left and right blocks and the camera, set up a reference mark with fixed XY coordinates, photograph the reference mark with a camera, and determine the camera coordinates. The location of the camera can be determined from its location. With such a sensor, the position of the camera in the X and Y directions can be detected. Further, if the relationship between the camera and the field of view is constant, the coordinates of the field of view in pixel units can be determined using the camera position as a representative point of the field of view.

Another position detection method is to fix a motor to a front-rear linear motion guide or a left-right linear motion guide, and connect the front and rear blocks or left and right blocks to the rotating shaft of the motor with a driving medium such as a belt or ball screw to move the camera. In the electronic magnifying glass, the control unit can detect the positions of the front-rear linear motion guide or the left and right blocks based on the origin and the rotational position of a rotary encoder attached to the rotation shaft of the motor. In order to calculate the camera position from the positions of the front-rear linear guide or the left and right blocks, it is sufficient to provide a reference mark with fixed XY coordinates, photograph the reference mark with a camera, and determine the camera coordinates. Such a motor and a control section serve as a position detection means.

The camera is moved to the reading start position, the material is set at a predetermined position, the reading is started, and if the size of the material exceeds the field of view, the camera is moved to the next location, but the distance between the camera and the material is constant. If so, the vertical x horizontal size of the field of view is known and the next imaging point can be calculated, so the camera can be moved to the next imaging point by moving a certain distance, and when the movement is completed, a completion message will be displayed on the display. It is also possible to notify the observer and take a photograph. Note that the interval between the imaging points may be determined so that their visual fields overlap.

Other position detection means include detecting the position by analyzing an image captured by a camera. For example, a mark made of a specific shape is displayed on the surface of the fall prevention mechanism as a place that can be seen by the camera. If the mark is detected in the image taken by the camera, it can be determined that the camera is located above the image. Therefore, if the position of the landmark is set in advance, the position of the camera can be detected via the camera image. Detection of the camera position based on such a camera image can be realized by the control section, and in this case, the position detection means is the camera and the control section.

Then, when the camera is positioned at a predetermined position, the control unit causes the camera to take a picture. The predetermined position can be a location where a landmark can be photographed at a preset location within the field of view. Therefore, when the camera is moved to a predetermined position using the operation section, photographing of the material is automatically started without any operation for photographing. This makes it possible to further simplify the operation for enlarging and displaying the material on the display.

In addition, the electronic magnifier is equipped with an image storage section in the control section and a memory switch on the operation section.When the memory switch is turned on, the image contents displayed on the display are sequentially stored in the image storage section of the control section. The file may be created when a storage completion switch provided in the section is turned on. The file may be saved in an external memory such as a USB memory (not shown). A file playback switch may be provided on the operation unit so that the created file image can be played back. Note that the configuration and control regarding the control unit in Embodiments 13 to 15 can be applied to the electronic magnifying glass of other embodiments.

[Explanation of halation]
FIGS. 25 and 26 show how illumination is particularly strongly reflected within the field of view of the camera depending on the relationship between illumination, materials, and the camera, causing halation that makes characters and the like invisible.

Figure 25 shows the reflection characteristics of the material using the illumination as the light source within the field of view of the camera when the illumination A is on and the material is placed on a flat surface without wrinkles.

The angle between the incident position of the incident light beam on the document and the normal line of the document indicates that the light intensity at the reflection angle with respect to the normal line of the reflected light beam is the strongest. At this time, the relationship between the light source, the material, and the camera is such that they are optically on the same straight line, and a light ray of strong intensity enters as if the light source image was formed on the image sensor of the camera.

In Figure 26, illumination A is turned on, and the light beam from illumination A enters the wrinkles in the document within the field of view of the camera, and the relationship between the camera and the light source is such that the light is received on the same optical straight line due to the inclination angle of the wrinkles. At this time, the reflected light from the wrinkles is most intensely incident on the camera's image sensor and is reflected in the camera, causing halation.

When the relationship between the camera and the light source is such that the light is received by the camera on the same optical straight line due to the inclination angle of the wrinkles, when the reflected light from the wrinkles reaches the camera image sensor, the camera image sensor detects the light source image through the material. If you consider the material to be a mirror surface and are looking at a light source reflected on a mirror surface, you will receive much stronger light than from a position in your field of view that is simply causing scattered light, and you will be able to see the light source. The field of vision in the area where the camera is connected will glow white. This is the halation phenomenon.

If the material is made of paper that is easily reflective, such as high-quality paper for gravure photographs, halation is more likely to be emphasized due to the high reflectance.

Figure 27 shows the case where the same wrinkled area is illuminated using only illumination B instead of illumination A. In this case, all of the reflected light from the material within the field of view is weakly scattered light, and there is no strong reflected light that causes the light source to be seen, so no halation occurs. In this way, the occurrence of halation can be controlled simply by switching on or off the lights at multiple locations.

[Embodiment 16]
FIG. 28 is a bottom view of the camera holding section, and FIG. 29 is a front view of the camera holding section as viewed from the observer side. The linear motion mechanism will be taken as an example of a longitudinal motion mechanism, but the same applies to a left and right motion mechanism. The camera holding part is locked to the camera arm of the linear motion mechanism, and the lighting A, lighting B, lighting C, and lighting D are placed on the camera holding part to hold the camera and also hold the objective lens of the camera. This is an example of an electronic magnifying glass configured so that the parts do not block the image.

Additionally, lighting may be provided that has a spot function that indicates where the field of view of the camera is. A light with a spot function is a light that can be turned on and off, and that can clearly show part of the camera field of view when turned on. It is better to be able to check the lighting intensity either visually or on a display. You can also add color to the lighting. A spotlight switch is provided as an operation switch to turn on and off the light.

On the other hand, halation is likely to occur when the illumination is placed close to the camera position, or even if the document is slightly tilted with respect to the camera due to wrinkles, etc., as shown in FIG. To reduce halation, place materials with fewer wrinkles, or change the angle of incidence and azimuth from the illumination, even if there are wrinkles or inclinations, to reduce halation that is occurring within the camera's field of view. It would be better to arrange the lighting so that it is difficult.

Assuming that the field of view of the camera is directly below, the angle of incidence of the illumination is the angle formed by the incident light from the light emitting source that illuminates the camera's field of view and the camera's optical axis, and the angle parallel to the camera's optical axis is 90 degrees. Assuming that the direction perpendicular to the camera optical axis is 0 degrees, if the illumination is placed at a high angle of incidence close to 90 degrees with respect to the material, the intensity of the illumination will be stronger, but if the material is slightly wrinkled or tilted, the camera is more likely to see the light source, and halation is more likely to occur. Conversely, even if the material has deep wrinkles or a large slope, the camera is less likely to see the light source and halation is less likely to occur.

If the illumination is illuminated at a low incident angle close to 0 degrees, the intensity of the illumination will be weak, but in order for the camera to see the light source, there must be deep wrinkles or a large tilt of about 45 degrees with respect to the light rays incident on the material. Therefore, halation is less likely to occur if the material is slightly wrinkled or tilted.

On the double-page spread of a book opened left and right, a continuous curved surface from a large inclination angle to a small inclination angle occurs, so care must be taken when arranging the lighting.

As mentioned above, the degree to which halation occurs changes depending on the angle of incidence of illumination with respect to the camera field of view.

If the lighting is arranged so that it can be turned on individually for each angle of incidence with respect to the camera field of view, it is possible to select lighting that avoids halation by changing the angle of incidence of the lighting and illuminating the material.

In the above explanation, we explained how halation occurs depending on the angle of incidence at which the optical axis and the incident light ray intersect, and the angle of the inclination and wrinkles of the material.However, halation can also occur depending on the azimuth angle of the incident light ray and the angle of the inclination and wrinkles of the material. occurs. The mechanism is the same as that for the incident angle. That is, by illuminating the material by changing the azimuth angle of the illumination, it is possible to select illumination that avoids halation. Further, even without providing multiple lights, it is possible to change the angle of incidence and azimuth with respect to the camera field of view by simply changing the position of one light. Although the above is not shown, it can be realized by configuring the position of the illumination to be changeable.

As described above, wrinkles and tilting of materials are causes of halation, and when materials are placed on the fall prevention mechanism, configuring the fall prevention mechanism with a flat plate prevents the material from tilting due to the fall prevention mechanism. This is also because we do not want to cause halation.

Moving lighting that moves with the camera may be used to achieve a constant lighting environment regardless of the size of the camera's field of view.

[Embodiment 17]
In Figure 30, lights 1 to 6, which can be turned on individually, are placed at the bottom of the display stand, and lights 1, 2, and 3 are placed at the lowest position and have the lowest illumination angle relative to the camera field of view of the material. irradiate.

Lighting 4, lighting 5, and lighting 6 are arranged above lighting 1, lighting 2, and lighting 3, and each lighting N has one or more light emitters, and in FIG. 30, lighting 1 and lighting 4 are turned on. This shows how the camera field of view is illuminated from two heights: high and low.

Regardless of the camera position, it is possible to turn on illumination 1 or illumination 4 and selectively irradiate illumination 1 with a low incidence angle closer to the material surface and illumination 4 with a higher incidence angle. Even if halation occurs at an incident angle of , it can be prevented by switching the illumination.

If halation occurs when lighting 1 or 4 is turned on, turning off lighting 1 and 4 and turning on lighting 2 or 5 changes the azimuth of the light source and the halation may disappear. At least the location of halation can be expected to be different. By switching the illumination in this way, it is expected that the occurrence of halation can be controlled.

[Embodiment 17]
The arrangement of lighting will be explained using FIGS. 30 to 35. Regarding the electronic magnifying glass shown in FIGS. 30 and 31, FIG. 30 is a front view, and FIG. 31 is a side view. A display stand opening is provided in the display stand.

Additionally, the display stand is equipped with a front-back translation mechanism, making it possible to move the camera back and forth. Furthermore, by installing a left-right translation mechanism between the display stand and the longitudinal translation mechanism, it is possible to move the camera in the front-rear direction and the left-right direction.

The display stand opening is an opening that does not obstruct the passage of the camera holding mechanism including the longitudinal translation mechanism when only the longitudinal translation mechanism is installed; If a motion mechanism is also installed, the opening should be long in the width direction of the display stand and should not obstruct the passage of the camera holding mechanism, including the longitudinal translation mechanism as well as the left and right translation mechanism. It is located below the bottom of the outer frame of the display. Further, in FIG. 30, the display stand has a lighting 1-6 arranged below the display stand opening. Lights 1-3 are at the lowest height of the display stand, and lights 4-6 are located at higher positions.

In addition, the position of the lighting can be adjusted by providing a mechanical up/down mechanism or a left/right mechanism.
This makes it possible to make more positional adjustments, and it is also possible to change the angle of incidence and azimuth with respect to the camera field of view simply by changing the position of the illumination.

[Embodiment 18]
The electronic magnifying glass shown in FIGS. 32 and 33 includes a movable illumination body holder. The movable illumination body holder is latched to the left and right (sliding) blocks as an extension, and has a shape that can be bent downward without contacting the longitudinal translation guide or the left and right translation guide. Further, the movable illumination body holder retains the movable illumination body at the downwardly bent portion. Such a movable illumination body moves as the movable illumination body holder and the camera move in the left-right direction.

[Embodiment 19]
The electronic magnifying glass shown in FIG. 34 is an example in which the movable illumination body is arranged so as not to touch the front-rear linear motion guide or the display. This example shows that the height of the light emitter can be placed higher than the position of the front-rear linear motion guide.

[Embodiment 20]
In the electronic magnifying glass shown in FIG. 35, the movable illumination body holder is bent in a fold-back shape. The movable illuminator is arranged diagonally with respect to the observer, and the light emitters are arranged so that the illumination 1 is at the lowest position and the larger the number of illuminations N, the higher the position relative to the material and the closer to the observer. There is. In the case of such an arrangement, if the arrangement and spacing of the illumination lights formed on the moving illumination body are the same, the pitch of the incident angles of the respective illumination lights becomes smaller as the inclination angle becomes larger.

In the mobile lighting body shown in FIGS. 32 to 35, lights 1 to 4 are arranged and can be turned on individually using a power source and a cable (not shown). When the camera moves left and right, the movable illumination body moves left and right at the same time, and a common illumination environment can be realized for the material with a common illumination configuration. The lighting N is composed of one or more light emitters, and can be turned on individually for each lighting number.

In addition, in the figure, the illumination is divided into left and right, and it may be configured so that it can be turned on individually so that it can be used as illumination at different azimuths for the material.

In addition, the position of the light on the movable light body can be adjusted even more by providing a mechanical vertical or horizontal mechanism, and by simply changing the position of the light, the angle of incidence and azimuth relative to the camera field of view can be changed. You can also.

As a result, even if halation occurs, it can be avoided by turning off the relevant light emitters and turning on the non-corresponding light emitters. Additionally, if the material is thick and illumination creates shadows that make it difficult to observe, the quality of observation can be improved by turning off the relevant light emitter and turning on the illumination that does not create shadows.

[Embodiment 21]
36 to 39 are examples of an electronic magnifying glass in which a movable illumination body is provided via an extension body to a camera holding portion provided on a linear motion guide of a longitudinal translation body. Specifically, an opening through which the movable illumination body and the extension body pass is provided further below the opening in which the left-right translational body and the front-rear translational body are installed, which are provided at the bottom of the display stand. Further, the camera holder is provided with a movable illumination body, which is an extension body that is locked to the camera holder and bent toward the display stand at a position lower than the opening.The holder is provided with a movable illumination body. There is. Even if the camera moves to the far side of the viewer and the moving illumination object intersects the display stand and reaches the position beyond the opening, the moving illumination object will close the opening without contacting the display stand. Light can be directed through the camera field of view.

According to such a configuration, the camera and the movable illumination body can be moved at the same time, and by providing an opening further below the display stand, there are fewer restrictions on the movement of the camera. In addition, in the explanation so far, the moving illumination body is formed into a flat plate shape and is placed on the back side of the observer, but the arrangement is not limited to the back side. Moreover, the moving illumination body may be arranged horizontally. This way, if the material is a thick book, etc., you can avoid contact with the material. Further, the moving illumination body may be composed of a plurality of pieces. It may also be configured in the shape of a quadrangular prism or semi-cylindrical shape. However, when signing a signature using the line drawing function, it is better to be careful about placing it in front of the viewer and to the left and right so that it does not interfere with the action.

[Embodiment 22]
Figure 38 has an extension similar to Figure 37, except that it is angled rather than perpendicular to the platform. A movable illumination body is fixed to the extension body so as to be inclined with respect to the mounting surface of the stand. This means that the angle of incidence with respect to the camera field of view is arranged in a finer stepwise manner than in the case of a moving illumination body arranged perpendicularly to the stand. Furthermore, since the illumination is applied from above the material, strong scattered light is likely to be obtained.

[Embodiment 23]
39 has an extension similar to that of FIG. 37, but differs in that it extends horizontally to the back at a height that passes through the opening of the display stand. A movable illumination body is fixed to the extension body so as to be substantially parallel to the base. As a result, the angle of incidence with respect to the camera field of view can be arranged in a finer stepwise manner than in the case of a moving illumination body disposed obliquely on a stand. Furthermore, since the illumination is applied from above the material, strong scattered light is likely to be obtained.

[Embodiment 24]
40 and 41 illustrate an electronic magnifying glass in which a camera stand is provided with a longitudinal translation mechanism and a horizontal translation mechanism, and a camera is attached to the longitudinal translation guide of the longitudinal translation mechanism via a camera holder. . The shape of the camera stand is long in the left-right direction even when there is no left-right translation mechanism, and is long in the left-right direction by at least the width of the front-back translation mechanism, and when there is a left-right translation mechanism, it is long in the left-right direction by at least the horizontal movement distance. A display opening may be provided to prevent the front-back linear motion guide from colliding with the display stand when the camera is moved to the back, but if there is a sufficient distance between the display and the camera stand, or if the camera and camera holding mechanism are If mounted on front and rear (sliding) blocks, no display opening is required. Whether or not an opening is necessary depends on whether there is interference between the display stand and the camera stand, or whether the distance between the viewer and the display is suitable for the viewer. If it is better for the distance between the viewer and the display to be greater than the front-rear linear motion guide colliding with the display stand, no opening is necessary. Further, on the camera stand, lighting 4, lighting 5, and lighting 6 are arranged above lighting 1, lighting 2, and lighting 3.

As a result of this configuration, the position of the display and the position of the camera stand, that is, the position of the camera, can be adjusted independently.

The display can be positioned to reduce eye fatigue, and the camera stand can be positioned to make it easier to manipulate the materials.

A simple moving means may be provided on the display stand to facilitate adjustment of the position of the display. For example, although not shown, a plurality of wheels may be provided at the bottom of the display stand so that the wheels can be rotated when moving and locked when stopped.

Further, the display stand may be provided with a distance measuring means so that the distance between the display and the viewer can be measured. If it is possible to recognize the distance at which the observer is least fatigued at the time of distance measurement, it is possible to reproduce the distance at which the observer is least tiring and to respond to changes in the same distance. The distance measuring means may measure the distance between the viewer and the display by installing a distance measuring sensor at the frame of the display. Alternatively, using a tape measure such as a convex or tape measure, hang the tip of the tape on a hook for hanging the corresponding tape tip at the position in front of the display provided on the display or display stand, as shown in Figures 64 and 65. The distance between the display and the viewer can be determined by aligning the other end of the tape with the position corresponding to the viewer's eyes and reading the value on the scale. If you record the read distance as the distance between the observer and the display, it is convenient to use it as a reference when reproducing or changing the position of the display.

[Embodiment 25]
As shown in FIGS. 42 and 43, the camera stand is provided with a camera stand opening. Then, an extension body similar to the one shown in FIG. 37 is attached to the camera holder. The extension body was locked to the camera holder, extended horizontally to the rear side at a height passing through the camera stand opening, further extended downward, and locked the movable illumination body in the downward extended position. It is something. The camera stand opening allows the movable illumination body and the extension body that locks it to pass through without coming into contact with the camera stand opening, and allows direct light from the illumination installed on the movable illumination body that passes through to reach the field of view of the camera. It is provided at the edge forming the camera stand opening in front so as not to block light. With this configuration, the camera and the movable illumination body can be moved simultaneously, and by providing an opening in the camera stand, the deepest position of the camera can be prevented from coming into contact with the movable illumination body at the intersection of the camera stand. There are no restrictions on movement.

[Embodiment 26]
Modifications are shown in FIGS. 44 and 45. 47 is a front view of the display supported by the display stand shown in FIGS. 44-46, FIG. 48 is a front view of the camera stand shown in FIGS. 44-46, and FIG. 49 is a top view thereof. be. Figures 47 to 49 are designed to ensure that the camera stand's longitudinal translation mechanism, left-right translation mechanism, and movable illumination body do not come into contact with or interfere with the display or display stand within their movable ranges, and that the illumination light of the movable illumination body is The display has a large aperture so that the height and width of the camera stand do not interfere with the display stand, so as not to obstruct the illumination of the field of view and to allow adjustment of the distance between the display and the viewer. It was established.

44 to 46 show a state in which a part of the longitudinal translation mechanism provided on the camera stand passes through a large display opening provided on the display stand. It can be seen that the distance between the viewer and the display can be made shorter than when the display stand does not have an opening. FIG. 46 shows the camera stand inserted into the large opening of the display stand. The distance between the viewer and the display can be significantly reduced compared to when the display stand does not have an opening.

[Embodiment 27]
50 to 52 show a structure in which a camera material extension part and a display material extension part are provided near the bottom of the camera stand and display stand to create a passage through which the material passes.

The structure of the camera material extension section and the display material extension section is approximately "U" shaped or "dog" shaped, with the upper part of the letter supporting the weight of the upper part, and the lower part It is grounded to the stand and has a connecting part that connects the upper part and the lower part, and the connecting part has a structure that creates a gap between the upper part and the lower part for passing the material.

If the camera material extension part is provided only on the camera stand, it is possible to adjust the position of the material with respect to the back side of the viewer, so the extension distance of the camera arm toward the viewer can be shortened by the position adjustment.

If the display stand is also provided with a display material extension section in addition to the camera material extension section, even if the distance between the camera stand and the display stand is shortened, the display stand will interfere with the adjustment of the material's position relative to the viewer. It is possible to adjust the position of the material without having to worry about it.

It is also possible to replace the camera, control unit, and operation unit with a smartphone. Although the operation panel may be replaced by an operation switch on a smartphone, a separately provided operation panel may be used via Bluetooth (registered trademark) or a communication cable. To change the camera magnification or display display, download special software to your smartphone.

By eliminating as much of the troublesome operations that are typical of smartphones as possible, even people with low vision can easily use it.

[Embodiments 28 and 29]
FIG. 53 is a side view of the electronic magnifying glass in a state where the camera holder holds a camera with a normal camera arrangement, and FIG. 55 is a top view thereof. FIG. 54 is a side view of the vicinity of the camera holding part when the camera shown in FIGS. 53 and 55 is replaced with a smartphone, and FIG. 56 is a top view thereof. The camera holder is located above the camera arm, allowing you to easily place your smartphone on it.

The camera holding part is provided on the top surface of the camera arm so that the smartphone can be easily placed from above, and a stop mechanism may be provided to prevent the smartphone from shifting when the smartphone is placed. Place it facing the direction.

At this time, the shape of the camera holder etc. must be such that it does not obstruct the field of view of the smartphone so that it does not obstruct the field of view of the camera.

Note that the camera holder may be provided with a rotation mechanism so that it can be tilted around the front-rear axis. When practicing signing, etc., you can see the state of the tip of the brush and get a feel for it.

[Embodiment 30]
In FIG. 57, a display is configured with a projector and a screen, a camera stand has at least one light that can be turned on individually, and a camera holding mechanism, the other end of the camera arm is locked to the camera holding mechanism, and the camera stand is equipped with a camera holding mechanism. Images of materials taken with a camera held in a camera holding part provided on a part of the arm are input to the projector via the control part, and the projector placed on the projector stand transmits the taken images. This shows how images are projected onto a screen through a projection lens.

The camera, camera stand, arm, control unit, and projector are placed in a position that does not obstruct the field of view of the observer observing the image of the material reflected on the screen display. A fall prevention mechanism (not shown) is fixed to the bottom of the camera stand. The camera holding mechanism may include a longitudinal translation mechanism, a left-right translation mechanism, or an R-θ drive mechanism.

In addition, the camera material extension part is formed into a substantially "U" shape or a substantially "V"-shaped structure, and the upper part of the character is used to load the camera stand, camera arm, camera, and camera holding part above it. The lower part is grounded to the stand, and the upper part and the lower part are connected to each other by a connecting part, and the connecting part may have a structure that creates a gap between the upper part and the lower part to allow the material to pass through. .

[Embodiment 31]
58 to 60 show an electronic magnifying glass attached to a notebook computer. A part of the camera arm supports the upper extension body that is locked to the upper frame of the display of the notebook computer, and the camera holding part that holds the camera, and rotates or rotates the camera arm in the horizontal direction between it and the other end of the camera arm. They are connected by a horizontal rotation axis that stops, and the camera arm is divided at the end of the upper extension body, the horizontal rotation axis side of the camera arm is the first arm, the side that supports the camera arm is the second arm, and the first arm and The second arm is connected by a vertical rotation axis that rotates or stops in the vertical direction, and a side extension body having a camera arm storage mechanism is provided on the outer frame on the side of the display to store the camera, camera holding mechanism, and camera arm. This indicates the state in which the This configuration is an R-θ type camera arm. The present invention is not limited to this example, and a longitudinal translation mechanism or a left-right translation mechanism may be configured.

The control unit and operation unit (not shown) may be provided on an extension body for easy operation by the observer, or the operation unit software may be created as dedicated software and the operation keyboard and mouse of the notebook computer may be used. However, a separate operation console may be provided as the operation section. The first arm and the second arm may be connected by one or more auxiliary arms and a horizontal axis of rotation that rotates in a horizontal direction, and the storage mechanism may be provided in the upper extension rather than the side extension. Further, in order to simplify the structure, the camera arm does not necessarily have to be divided.

In addition, a material extension table having a material extension part shaped like a "U" or "dog" is provided at the bottom of the keyboard input area, as shown in Figure 62, so that the material can be moved smoothly to the back side. You can do it like this.

[Embodiment 32]
62 and 63 are display stands in which a portable display device, such as a notepad, which is not normally attached to a display stand, is used for reading materials.

The display stand consists of a display holder with a display stopper at the tip, a leaning part on which the display is propped up, and an operation part stand that houses the operating part.The display holder and the leaning part are equipped with a control part or a power supply part. The operating unit is removably housed in the operating unit stand.

The camera holding part that holds the camera is supported by a part of the camera arm, and the vicinity of the other end of the camera arm and the vicinity of the tip of the leaning part are connected by a horizontal rotation shaft that rotates or stops in the horizontal direction. This constitutes a θ-type camera arm. The camera holding mechanism allows the camera to be rotated horizontally, and may be rotated 90 degrees depending on the angle correction or article structure of the material. Alternatively, the camera may be configured to be able to move back and forth and left and right by forming a longitudinal translation mechanism as shown in FIG. 10 and the like, or by adding a left and right translation mechanism. The illumination may be placed on the display stopper, or an extension may be provided on the camera holder to form a movable illumination body.

Furthermore, a document stretching table having a document stretching section in the shape of a "U" or "C" is provided at the bottom of the display holder, as shown in Fig. 62, so that materials can be moved smoothly to the back side. You can do it like this.

The upper part of the letter supports the weight of the display, leaning part, camera, camera holding mechanism, operation part, power supply part, etc. above it, and the lower part is grounded to the stand, and the upper part and the lower part are supported. It has a connecting part, that is, a connecting part, and the connecting part has a structure that creates a gap between the upper part and the lower part to allow the material to pass through. The operation unit software may be created as dedicated software.

Claims (18)

1. An electronic magnifying glass that displays a camera image captured by a camera of an object placed on a table on a display,
   a control unit that performs image processing on the camera image and outputs the image to the display;
   A camera holding mechanism that holds the camera;
   The electronic magnifying glass characterized in that the camera holding mechanism and the camera are arranged out of line of sight between the viewer and the display.
2. comprising at least one light illuminating the object;
   The camera holding mechanism is
   camera stand and
   a camera arm supported by the camera stand;
   a camera holding part attached to the camera arm and holding the camera;
   a flat plate-like fall prevention mechanism placed on the stand;
   The camera stand is attached to the fall prevention mechanism,
   The electronic magnifying glass according to claim 1, wherein the camera stand is provided with the illumination below the camera arm.
3. The camera holding mechanism further includes a movable part,
   The movable part is a longitudinal translation mechanism that moves the camera in the front-back direction of the observer via the camera arm, a left-right translation mechanism that moves the camera in the left-right direction of the observer, or a rotational translation mechanism that moves the camera in the left-right direction of the observer. The electronic magnifying glass according to claim 2, characterized in that it has an R-θ type movement mechanism.
4. The camera stand is
   A camera stand opening that penetrates in the front and back direction when viewed from the observer;
   an extension body extending in the front-rear direction as viewed from the observer and passing through the camera stand opening;
   The extension body has one end locked to the camera holding part and a movable illumination body provided at the other end,
   The moving illumination body is
   When passing through the camera stand opening and moving backward, the camera is positioned on the opposite side of the camera holding part with respect to the camera stand opening and emits light toward the camera stand opening. 4. The electronic magnifying glass according to claim 3, wherein the illumination is provided in the electronic magnifying glass.
5. The camera holding mechanism is
   a display receiver on which the display is placed;
   a leaning part that stands on the display receiving part and on which the display can be propped up;
   a camera arm supported by the leaning part;
   the camera holding part that is attached to the camera arm and holds the camera;
   The electronic magnifying glass according to claim 1, further comprising a display stand having:
6. The camera holding mechanism includes a camera arm and the camera holding part that holds the camera,
   A part of the camera arm has the camera holding part,
   The other part of the camera arm is attached to the camera stand, the outer frame of the display, the back surface of the display, a display stand that holds the display, the outer frame of the display of the notebook computer, or an extension thereof. The electronic magnifying glass according to any one of claims 1 to 5, characterized in that:
7. The camera holding mechanism further includes a movable part,
   The movable part is a longitudinal translation mechanism that moves the camera in the front-back direction of the observer via the camera arm, a left-right translation mechanism that moves the camera in the left-right direction of the observer, or a rotational translation mechanism that moves the camera in the left-right direction of the observer. The electronic magnifying glass according to claim 6, characterized in that it has an R-θ type movement mechanism.
8. The camera holding mechanism has the fall prevention mechanism that prevents the camera holding mechanism from falling over;
   The fall prevention mechanism is arranged inside or outside the field of view of the camera,
   The fall prevention mechanism disposed inside the field of view of the camera has a field of view partially or entirely composed of a flat plate,
   The fall prevention mechanism disposed outside the field of view of the camera has a part or all of the range in which the object is placed formed of a flat plate, and is formed with almost no difference in level from the inside of the field of view of the camera. The electronic magnifying glass according to any one of claims 1 to 5, characterized in that:
9. comprising a position detection means for the camera;
   8. The electronic magnifying glass according to claim 7, wherein the control section causes the camera to take a picture when the camera reaches a predetermined position by the position detecting means.
10. comprising an operation section for operating the camera,
    The operation unit is arranged on the camera stand, the outer frame of the display, the back surface of the display, a display stand that holds the display, or an extension thereof. 5. The electronic magnifying glass according to any one of 5.
11. The camera and the control unit are a smartphone with a camera,
    The electronic magnifying glass according to any one of claims 1 to 5, wherein the camera holding mechanism holds the camera-equipped smartphone.
12. The operation unit includes an operation switch, a selection switch, and an execution switch,
    The control unit includes:
    It has functional parts that execute various processes,
    When the operation switch is pressed, displaying a list of the selectable functional units as an operation image on the display;
    When the selection switch is pressed, one of the operation images displayed as a list of the functional units is set to a selected state and is displayed to be distinguished from the others;
    11. The function unit according to claim 10, wherein when the execution switch is pressed while the operation image is displayed distinctly from others, the function unit corresponding to the operation image that is in a selected state is executed. Electronic magnifier.
13. The control unit includes:
    The electronic magnifying glass according to any one of claims 1 to 5, further comprising a functional unit that outputs a line to be superimposed on the video output output from the camera.
14. comprising at least one light illuminating the object;
    The illumination is characterized in that the angle of incidence is the angle formed by the incident light beam illuminating the camera field of view and the camera optical axis, and the illumination is arranged so that the incident angle changes, or the illumination is arranged so that the azimuth angle with respect to the camera field of view changes. The electronic magnifying glass according to any one of claims 1 to 5.
15. Equipped with multiple lights that can be turned on individually,
    The electronic magnifying glass according to any one of claims 1 to 5, characterized in that only illumination that causes halation during observation is turned off, and only illumination that is effective for observation is turned on.
16. The electronic magnifying glass according to claim 5, wherein the display stand includes a moving means for moving the display and a distance measuring means for measuring a distance from the display to the viewer.
17. comprising at least one light illuminating the object;
    The electronic magnifying glass according to any one of claims 1 to 5, wherein the illumination is arranged at a back side of the viewer.
18. The electronic magnifying glass according to any one of claims 1 to 5, comprising the camera and/or the display.
    

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