JP2014232158A - Diopter adjustment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adjust a diopter of an eyepiece part.SOLUTION: A diopter adjustment system 10 is the diopter adjustment system of an optical device 20 having an eyepiece part, and the diopter adjustment system comprises a storage medium 30 that is mounted to the optical device 20 and a spectacle 2, and stores diopter information relating to a diopter upon contacting with the eyepiece part in a state where a user 1 of the spectacle 2 wears the spectacle 2. The optical device 20 has: communication means that acquires the diopter information from the storage medium 30 when the spectacle 2 and the optical device 20 come close to each other; and diopter adjustment means that adjusts a diopter of the eyepiece part on the basis of the diopter information acquired by the communication means.

Description

  The present invention relates to a diopter adjustment system.

  A digital camera that can adjust the diopter of the finder by operating a diopter adjustment dial is known (see Patent Document 1).

JP 2011-085872 A

  For users who use multiple types of glasses, the conventional digital camera mentioned above requires time and effort to adjust the diopter of the viewfinder by operating the diopter adjustment dial each time the glasses to be worn are changed. It was.

A diopter adjustment system according to a first aspect of the present invention is a diopter adjustment system for an optical device having an eyepiece. The diopter adjustment system is attached to an optical device and glasses, and the user of the glasses wears the glasses. A storage medium that stores diopter information related to the diopter when the eyepiece is in contact with the eyepiece, and the optical device acquires the diopter information from the storage medium when the glasses and the optical device are in proximity to each other And diopter adjustment means for adjusting the diopter of the eyepiece based on the diopter information acquired by the communication means.
A diopter adjustment system according to a sixth aspect of the present invention is a diopter adjustment system for a camera having a finder. The diopter adjustment system is attached to a camera and spectacles, and a spectacles user wears spectacles to make eye contact with the finder. And a storage medium for storing diopter information related to the diopter at the time, and the camera is obtained by the communication means for obtaining the diopter information from the storage medium when the glasses and the camera are close to each other. Diopter adjusting means for adjusting the diopter of the finder based on the diopter information.

  According to the present invention, the diopter of the eyepiece can be automatically adjusted.

It is a figure explaining the outline | summary of a diopter adjustment system. It is a figure explaining the example of arrangement | positioning of an IC tag. It is a rear view of a digital camera. It is a block diagram explaining the structure of a digital camera and an IC tag. It is a figure explaining the flow of a process regarding registration mode. It is a figure explaining the flow of the process regarding imaging | photography mode.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an overview of a diopter adjustment system 10 according to the present embodiment. The diopter adjustment system 10 is a system that automatically adjusts the diopter of the finder of the digital camera 20, and includes a digital camera 20 and an IC tag 30 attached to the glasses 2 of the user 1. The IC tag 30 stores diopter information indicating the diopter of the finder suitable when the user 1 is wearing the glasses 2. When the spectacles 2 come close to the digital camera 20 by the user 1 looking through the viewfinder, the digital camera 20 transmits the diopter information from the IC tag 30 attached to the spectacles 2 by near field communication (NFC). And the diopter of the finder is automatically adjusted based on the diopter information.

  FIG. 2 is a diagram for explaining an arrangement example of the IC tag 30. It is sufficient that at least one IC tag 30 is provided in the glasses 2 at a position close to the digital camera 20 when the user looks into the viewfinder. The IC tag 30 is, for example, positions 41L and 41R in the upper center of the left and right rims of the frame of the glasses 2, positions 42L and 42R of the joints of the left and right rims and temples, and positions close to the eyes of the user 1 in the left and right temples. What is necessary is just to provide in the position of at least any one of 43L and 43R. The IC tag 30 may be embedded in the frame of the glasses 2 in advance, or the separately sold IC tag 30 may be attached to the glasses 2 after purchasing the glasses 2.

  FIG. 3 is a rear view of the digital camera 20. A finder eyepiece window 211 for peeking through the finder, a diopter adjustment dial 212 for the user to manually adjust the diopter of the finder, and the like are provided on the upper back of the digital camera 20.

  FIG. 4 is a block diagram illustrating the configuration of the digital camera 20 and the IC tag 30. The digital camera 20 includes a CPU 201, a memory 202, an imaging lens 203, an imaging element 204, a reader / writer unit 205, an operation member 206, and a finder unit 210.

  The CPU 201 controls the operation of the entire digital camera 20 by executing a program stored in the memory 202. The memory 202 includes SDRAM and flash memory. The SDRAM is a volatile memory, and is used as a work memory for the CPU 201 to develop a program when the program is executed, or as a buffer memory for temporarily recording data. The flash memory is a non-volatile memory in which data of a program executed by the CPU 201, various parameters read at the time of program execution, and the like are recorded.

  The imaging lens 203 includes a plurality of lens groups including a zoom lens and a focusing lens, and forms a subject image on the light receiving surface of the imaging element 204. In order to simplify FIG. 4, the imaging lens 203 is shown as a single lens. The image sensor 204 is an image sensor such as a CMOS image sensor, for example, picks up a subject image formed by the image pickup lens 203 and outputs the obtained image signal to the CPU 201.

  The CPU 201 includes an image processing unit, performs image processing such as white balance processing on digital image data, compresses image data after image processing in a predetermined format, and decompresses compressed image data. Perform processing.

  The operation member 206 includes various input members operated by the user, for example, a power button, a shutter button, a registration button described later, a mode switching button, and the like, and outputs an operation signal corresponding to the operation of each input member to the CPU 201. .

  The viewfinder unit 210 constitutes a so-called electronic viewfinder (EVF). The finder unit 210 includes a liquid crystal display element 213, an eyepiece lens 214, a diopter adjustment unit 215, a finder eyepiece window 211, and a diopter adjustment dial 212. Under the control of the CPU 201, the liquid crystal display element 213 displays an image picked up by the image pickup element 204, various information related to shooting, and the like. The user can visually recognize the display screen of the liquid crystal display element 213 through the eyepiece lens 214 from the finder eyepiece window 211. In this description, displaying an image, text, or the like on the liquid crystal display element 213 of the finder unit 210 is described as “displaying on the finder”, or the user viewing the liquid crystal display element 213 from the finder eyepiece window 211. "Peek through the viewfinder."

  The diopter adjustment unit 215 adjusts the diopter of the finder by moving the eyepiece lens 214 in the optical axis direction in response to an instruction from the diopter adjustment dial 212 or the CPU 201. Note that a liquid lens may be provided in the eyepiece lens 214, and the diopter of the finder may be adjusted by changing the optical characteristics of the liquid lens.

  The reader / writer unit 205 includes an antenna, and reads information from the IC tag 30 or writes information to the IC tag 30 via the antenna in accordance with an instruction from the CPU 201. The reader / writer unit 205 is provided in the vicinity of the finder eyepiece window 211. When a user wearing spectacles looks into the finder eyepiece window 211, the reader / writer unit 205 reads information from the IC tag 30 attached to the spectacles. You can write.

  The IC tag 30 includes a non-volatile memory 301 formed of an IC chip and an information transmission / reception antenna 302. The IC tag 30 can transmit information written in the memory 301 from the antenna 302, and can store information received from the antenna 302 in the memory 301. The IC tag 30 in this embodiment is, for example, a passive type, and can be operated by electromagnetic induction by radio waves transmitted from the antenna of the reader / writer unit 205 of the digital camera 20, and therefore does not have a built-in battery.

  FIG. 5 is a flowchart for explaining the flow of processing for registering diopter information in the IC tag 30 in the diopter adjustment system 10. For example, when the mode switching button (not shown) is operated by the user to switch to the IC tag registration mode in which diopter information is registered in the IC tag 30, the CPU 201 executes a program for executing the processing shown in FIG. to start.

  In step S1, the CPU 201 determines whether or not a registration button (not shown) has been pressed by the user. The CPU 201 repeats the process of step S1 until the registration button is pressed. When the registration button is pressed, the CPU 201 makes an affirmative determination in step S1 and proceeds to step S2.

  At this time, the user adjusts the diopter of the finder by operating the diopter adjustment dial 212 while looking through the finder of the digital camera 20 while wearing glasses for which diopter information is to be registered. The user presses a registration button (not shown) after adjusting the diopter so that the viewfinder is easy to see.

  In step S <b> 2, the CPU 201 determines whether glasses are close to the digital camera 20. If the reader / writer unit 205 recognizes the IC tag 30 attached to the glasses by looking into the viewfinder while wearing the glasses, the CPU 201 makes a positive determination in step S2 and performs step Proceed to S3. On the other hand, when the IC tag 30 is not recognized by the reader / writer unit 205, the CPU 201 makes a negative determination in step S2, and repeats the process of step S2 until the IC tag 30 is recognized.

  In step S3, the CPU 201 performs a process of writing diopter information indicating the diopter of the finder at the time when the registration button is pressed into the memory 301 of the IC tag 30 attached to the glasses in the reader / writer unit 205. Then, the process of FIG. Thereby, diopter information indicating the diopter of the finder suitable when the user wears glasses is stored in the IC tag 30. The IC tag 30 stores diopter information suitable for the eyes used when the user normally looks into the viewfinder among the left eye and the right eye.

  The digital camera 20 can also register a default value of the viewfinder diopter. In the digital camera 20, as a default value, a finder diopter suitable for the case where the user is naked eyes (when glasses are not worn) is registered, so that the viewfinder can be easily viewed even when the user is naked eyes. Can be visually recognized.

  When it is desired to register the diopter of the finder suitable for the case where the user is naked, as a default value, for example, a mode switching button (not shown) is operated to switch to the default value registration mode. Then, while looking through the viewfinder of the digital camera 20 with the naked eye, the diopter adjustment dial 212 is operated to adjust the viewfinder diopter. Then, the CPU 201 of the digital camera 20 sets the diopter of the finder at the time when the registration button is pressed as a default value and stores it in the memory 202.

  FIG. 6 is a flowchart for explaining the flow of processing for automatically adjusting the diopter of the finder of the digital camera 20 in the diopter adjustment system 10. For example, when the user switches to a shooting mode by operating a mode switching button (not shown), the CPU 201 activates a program for executing the processing shown in FIG. In the photographing mode, the process shown in FIG. 6 is repeatedly performed. At the start of the shooting mode, the diopter of the finder is adjusted to the default value stored in the memory 202. That is, when a diopter suitable for a state where the user is naked is registered as a default value, the diopter of the finder is adjusted to a diopter suitable for a state where the user is naked.

  In step S <b> 11, the CPU 201 determines whether glasses are close to the digital camera 20. If the reader / writer unit 205 recognizes the IC tag 30 attached to the glasses by looking through the viewfinder while wearing the glasses, the CPU 201 makes a positive determination in step S11 and performs step Proceed to S12. On the other hand, if the IC tag 30 is not recognized by the reader / writer unit 205 because the user is looking through the viewfinder with the naked eye, the CPU 201 makes a negative determination in step S11 and proceeds to step S14.

  In step S12, the CPU 201 causes the reader / writer unit 205 to perform processing for reading diopter information from the IC tag 30, and proceeds to step S13.

  In step S13, the CPU 201 causes the diopter adjustment unit 215 to perform a process of adjusting the diopter of the finder so that the diopter indicated by the diopter information acquired in step S12 is obtained, and the process proceeds to step S14. Thereby, the finder of the digital camera 20 is adjusted to a diopter suitable for a state in which the user wears glasses.

  In step S14, the CPU 201 determines whether a shutter button (not shown) has been pressed. If the shutter button has not been pressed, the CPU 201 makes a negative determination in step S14 and returns to step S11. On the other hand, when the shutter button is pressed, the CPU 201 makes a positive determination in step S14 and proceeds to step S15.

  In step S15, the CPU 201 causes the image sensor 204 to capture a subject image, performs a shooting process of recording the captured image on a recording medium (not shown), and ends the process of FIG.

  As described above, in the digital camera 20, when the user looks into the finder while wearing spectacles, the diopter of the finder is adjusted based on the diopter information read from the IC tag 30 attached to the spectacles. Therefore, the user can look into the viewfinder with a diopter suitable for the state of wearing glasses. On the other hand, when the user looks into the viewfinder with the naked eye, the diopter of the viewfinder is left at the default value, so that the user can look into the viewfinder with a diopter suitable for the naked eye.

  Further, in the case of a user who uses a plurality of types of glasses, the digital camera 20 can be used by the user by registering the diopter information in the IC tag 30 by executing the processing of FIG. Even if the spectacles to be worn are changed, the diopter of the finder can be automatically adjusted to the diopter suitable for the spectacles being worn each time. Therefore, for example, every time the eyeglasses are changed, the diopter is adjusted with the diopter adjustment dial 212, or the diopter information for each eyeglass is stored in the digital camera 20 and called when used. Without letting the user perform, the user can visually recognize the finder with a diopter that is easy to see.

  In addition, when a plurality of users share the digital camera 20, the digital camera 20 can be obtained by registering the diopter information in the IC tag 30 by executing the processing of FIG. Even if the user changes, the diopter of the finder can be automatically adjusted to a diopter suitable for the user each time.

  Also, if diopter information is registered in the IC tag 30 attached to the glasses, after that, even if the digital camera is different from the digital camera 20 that performed the diopter information registration process, it is only necessary to look into the viewfinder. With this, diopter can be adjusted automatically. Therefore, for example, when comparing a plurality of digital cameras at a store, it is possible to try a plurality of digital cameras without the trouble of manually adjusting the diopters one by one using a diopter adjustment dial one by one. .

According to the embodiment described above, the following operational effects can be obtained.
(1) The diopter adjustment system 10 includes a digital camera 20 and an IC tag 30 that is attached to the spectacles and stores diopter information related to the diopter when the spectacles user wears the spectacles when the eyepiece is in contact with the finder. The digital camera 20 includes a reader / writer unit 205 that acquires diopter information from the IC tag 30 when the glasses 2 and the digital camera 20 are close to each other, and the diopter of the finder based on the diopter information. A diopter adjustment unit 215 for adjustment. Thereby, the diopter of the finder can be automatically adjusted to a diopter that is easy for a user wearing spectacles to see.

(2) In the diopter adjustment system 10, the digital camera 20 further includes a diopter adjustment dial 212 for the user to adjust the diopter of the finder, and the reader / writer unit 205 is adjusted by the diopter adjustment dial 212. The diopter of the finder is written in the IC tag 30 as diopter information. Accordingly, the user can adjust the diopter to a desired diopter with the diopter adjustment dial 212 while actually looking through the viewfinder of the digital camera 20, and the diopter can be stored in the IC tag 30. Therefore, thereafter, the user can visually recognize the viewfinder of the digital camera 20 with a desired diopter without performing complicated operations.

(3) In the diopter adjustment system 10, the digital camera 20 further includes a memory 202 that stores a default value of the diopter of the finder, and the CPU 201 obtains diopter information by the reader / writer unit 205. The diopter of the finder is adjusted based on the diopter information, and when the diopter information is not acquired by the reader / writer unit 205, the diopter of the finder is adjusted based on the default value. Accordingly, by storing diopter information suitable for the naked eye as a default value in the memory 202, when the user looks into the finder with the naked eye, the finder can be viewed with the diopter suitable for the naked eye. On the other hand, when the user looks into the finder while wearing glasses, the user can look into the finder with a diopter suitable for the state wearing glasses.

(Modification 1)
When the user is a color weak person, depending on the color, various information such as symbols and characters displayed on the finder may be difficult to see. Therefore, the digital camera 20 may adjust the display color of various information displayed on the finder, the background color of the screen, and the like so that the visually impaired can easily see. In this case, since it is difficult to see the color depending on the type of color weakness, the type of color weakness is stored in the IC tag 30 so that the color can be adjusted for each user.

  In the first modification, for example, the digital camera 20 is provided with a color vision inspection mode. In the color vision inspection mode, the CPU 201 displays a color vision inspection question on the finder. The user looks through the finder while wearing spectacles, confirms a question for color vision inspection, operates the operation member 206, and inputs an answer to the question for color vision inspection. The questions for color vision inspection may be generated in advance based on a known color vision inspection table and stored in the memory 202, for example. The CPU 201 determines the type of color weakness of the user based on the answer input by the user. The CPU 201 writes the weak color information indicating the determined type of weak color into the IC tag 30 attached to the glasses worn by the user.

  In the shooting mode, when the IC tag 30 attached to the glasses is recognized by the reader / writer unit 205 when the user peeks through the viewfinder while wearing the glasses, the CPU 201 recognizes the color weak information from the IC tag 30. Read. Based on the type of color weakness indicated by the color weakness information, the CPU 201 adjusts the color of various information displayed on the finder (symbol, character color, screen background color), etc., so that the color weakness type is easy to see. To do.

  As described above, since the digital camera 20 automatically adjusts the color of the display information on the finder based on the color weakness information read from the IC tag 30 attached to the glasses, the user uses the digital camera 20. The display information of the finder can be confirmed with easy-to-see colors without performing complicated operations such as manually setting for color weakness each time the color changes.

(Modification 2)
In the above-described embodiment, the example in which the diopter information of the finder is stored in the IC tag 30 has been described. However, in addition to the diopter information, information for the user to perform desired settings may be stored. Good.

  In the case of the modification 2, for example, the digital camera 20 is provided with a setting registration mode. In the setting registration mode, the CPU 201 displays a setting screen for performing various settings on the viewfinder. The various settings are settings related to various functions that the digital camera 20 has, such as the size of characters displayed on the viewfinder, shooting settings for beginners, shooting settings for advanced users, and the like. The shooting setting for beginners is, for example, a setting for setting the automatic exposure mode to the program AE mode or setting the white balance setting mode to the auto white balance mode. On the other hand, the shooting settings for advanced users are, for example, settings in which the automatic exposure mode is set to the manual AE mode and the white balance setting mode is set to the preset white balance mode.

  The user looks into the viewfinder while wearing glasses, confirms the setting screen, and operates the operation member 206 to make various settings. The CPU 201 assigns an identification number to setting information indicating the content set by the user, and stores the setting information and the identification number in the memory 202 in association with each other. Then, the CPU 201 writes the identification number in the IC tag 30 attached to the glasses worn by the user.

  In the photographing mode, when the IC tag 30 attached to the glasses is recognized by the reader / writer unit 205 when the user peeks through the viewfinder while wearing the glasses, the setting is made from the IC tag 30. Read the identification number of the information. The CPU 201 reads the setting information corresponding to the identification number with reference to the memory 202 and performs various settings based on the read setting information.

  As described above, since the digital camera 20 automatically performs various settings based on the identification number read from the IC tag 30 attached to the glasses, the user manually changes every time the user using the digital camera 20 changes. Thus, the user can use the digital camera 20 with desired settings registered in the IC tag 30 without performing complicated operations such as making various settings.

(Modification 3)
In the above-described embodiment, an example in which diopter information is written from the digital camera 20 to the IC tag 30 has been described. However, the diopter information may be written to the IC tag 30 using not only the digital camera 20 but also other reader / writer devices. For example, when purchasing spectacles at a spectacle store, the reader / writer device installed in the spectacle store calculates the necessary finder diopter correction value based on the user's eyesight and the power of the spectacles, and the diopter The correction value may be written in the IC tag 30 attached to the glasses.

  In addition, when the user's eyesight changes, the diopter of the finder suitable for the user's eyesight also changes. For example, when the eyesight is examined at a spectacle store, the reader / writer device installed in the spectacle store Based on the new visual acuity and the power of the glasses, a necessary finder diopter correction value is calculated, and the contents of the diopter correction value written in the IC tag 30 attached to the glasses are used as the calculated diopter correction value. You may make it rewrite.

(Modification 4)
In the above-described embodiment, an example has been described in which diopter information suitable for the eyes used by the user when looking into the viewfinder is stored in the IC tag 30 among the left eye and the right eye. However, for example, the diopter information for the left eye is stored in the IC tag 30 attached to the left part of the spectacle frame, and the diopter information for the right eye is stored in the IC tag 30 attached to the right part of the spectacle frame. It may be. Thereby, when the user uses the left eye when looking into the viewfinder of the digital camera 20, the IC tag 30 attached to the left part of the spectacle frame is close to the digital camera 20, so the reader / writer unit 205 Diopter information for the left eye can be acquired from the IC tag 30. Similarly, when the user uses the right eye when looking into the viewfinder of the digital camera 20, the IC tag 30 attached to the right part of the spectacle frame is close to the digital camera 20, so the reader / writer unit 205 Diopter information for the right eye can be acquired from the IC tag 30. Therefore, the digital camera 20 can appropriately adjust the diopter regardless of whether the user uses the left eye or the right eye when looking through the viewfinder.

(Modification 5)
In the above-described embodiment, an example of adjusting the diopter of the electronic viewfinder has been described. However, the present invention may be applied to a digital camera having an optical viewfinder when adjusting the diopter of the optical viewfinder.

(Modification 6)
In the embodiment described above, an example of adjusting the diopter of the finder of the digital camera 20 has been described. However, when adjusting the diopter of an optical device (for example, binoculars or a microscope) having other eyepieces. You may make it apply this invention.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Diopter adjustment system, 20 ... Digital camera, 30 ... IC tag, 201 ... CPU, 202 ... Memory, 203 ... Imaging lens, 204 ... Imaging element, 205 ... Reader / writer part, 206 ... Operation member, 210 ... Finder unit 212, diopter adjustment dial, 213, liquid crystal display element, 214, eyepiece, 215, diopter adjustment unit, 301, memory, 302, antenna.

Claims (6)

A diopter adjustment system for an optical device having an eyepiece,
The optical device;
A storage medium that is attached to the spectacles and stores diopter information related to diopter when the spectacles user wears the spectacles when the eyepiece is in contact with the eyepiece;
With
The optical device comprises:
Communication means for acquiring the diopter information from the storage medium when the glasses and the optical device are close to each other;
Diopter adjustment means for adjusting the diopter of the eyepiece based on the diopter information acquired by the communication means;
A diopter adjustment system characterized by comprising: The diopter adjustment system according to claim 1,
The optical device further includes an operation member for a user to adjust the diopter of the eyepiece,
The diopter adjustment system, wherein the communication unit writes the diopter of the eyepiece adjusted by the operation member into the storage medium as the diopter information. The diopter adjustment system according to claim 1 or 2,
The optical device further includes storage means for storing a predetermined setting value for the diopter of the eyepiece unit,
The diopter adjustment means adjusts the diopter of the eyepiece based on the diopter information when the diopter information is acquired by the communication means, and the diopter information is obtained by the communication means. If not acquired, the diopter adjustment system adjusts the diopter of the eyepiece based on the set value. In the diopter adjustment system according to any one of claims 1 to 3,
The storage medium further stores color weakness information related to the user's color weakness,
The communication means of the optical device further acquires the color weakness information from the storage medium when the glasses and the optical device are close to each other,
The diopter adjustment system, wherein the optical device further includes color adjustment means for adjusting the color of information displayed on the display means in the eyepiece unit based on color weakness information acquired by the communication means. . In the diopter adjustment system according to any one of claims 1 to 4,
The storage medium further stores setting information related to settings related to the function of the optical device,
The communication means of the optical device further acquires the setting information from the storage medium when the spectacles and the optical device are close to each other,
The diopter adjustment system, wherein the optical device further includes a setting unit configured to perform a setting related to a function of the optical device based on setting information acquired by the communication unit. A diopter adjustment system for a camera having a viewfinder,
The camera;
A storage medium that is attached to eyeglasses and stores diopter information related to diopter when the eyeglass user wears the eyeglasses while eyepiece is attached to the viewfinder;
With
The camera
Communication means for acquiring the diopter information from the storage medium when the glasses and the camera are close to each other;
Diopter adjustment means for adjusting the diopter of the finder based on the diopter information acquired by the communication means;
A diopter adjustment system characterized by comprising:

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