JP7419980B2 - Autofocus glasses, their power adjustment method and program - Google Patents

Description

TECHNICAL FIELD The present disclosure relates generally to autofocus eyeglasses, and more particularly to a method for adjusting the power of a variable power lens of autofocus eyeglasses.

Autofocus glasses are equipped with variable power lenses, and the power of the variable power lenses is adjusted according to the condition of the user's eyes or the distance from the autofocus glasses to the object to be viewed. Therefore, users can use the same autofocus glasses regardless of their visual acuity.

However, even if the distance from the autofocus glasses to the visual object is the same, the optimal power of the variable power lens differs depending on the user's visual acuity. Therefore, the user needs to previously set the power of the variable power lens for each distance from the autofocus glasses to the visual object as an initial setting.

Regarding adjustment of the power of variable power lenses of autofocus glasses, for example, Japanese Patent Application Laid-Open No. 2015-052772 (Patent Document 1) describes that "a first optical system or a first optical system provided with both a solid lens and a variable focus lens" In the optical system 2, when a user with refractive error in his eyes views a predetermined visual target through a solid lens or a variable focus lens, the user can clearly see the predetermined visual target. , constitutes a solid lens, a variable focus lens, or is equipped with a variable focus lens, and in a state where no voltage is applied to the electrodes that drive the variable focus lens, a user views a predetermined visual object through the variable focus lens. Discloses a vision correction device that configures a variable focus lens according to the user's visual acuity so that the user can clearly see a predetermined visual target when visually recognizing it (see [Summary]) .

Further, other techniques related to adjusting the power of lenses of autofocus glasses are disclosed in, for example, Patent Documents 2 to 8.

Japanese Patent Application Publication No. 2015-052772 Japanese Patent Application Publication No. 2014-157197 Japanese Patent Application Publication No. 2014-134782 Japanese Patent Application Publication No. 2014-038302 Special table 2018-525672 publication Special table 2017-523445 publication International Publication No. 2018/168644 International Publication No. 2018/168570

According to the techniques disclosed in Patent Documents 1 to 8, when initially setting the power of the variable power lens, it is necessary for the user to reposition the visual target multiple times. As a result, there is a possibility that the power of the variable power lens cannot be adjusted accurately due to positional deviation when the visual target is installed. Therefore, there is a need for a technique that allows the user to complete the initial setting of the power of the variable power lens without having to reinstall the viewing target.

The present disclosure has been made in view of the above-mentioned background, and an object of the present disclosure in one aspect is to provide a technique for completing the initial setting of the power of a variable power lens without the user having to reinstall the visual target. It is about providing.

Autofocus glasses according to an embodiment include a variable power lens, a position adjustment mechanism for adjusting the distance between the variable power lens and the eye, a power adjustment section for adjusting the power of the variable power lens, and an autofocus lens. It includes an input section that receives input of instructions for the glasses, a storage section that stores power information of the variable power lens, and a control section that controls the autofocus glasses. The position adjustment mechanism adjusts the distance between the variable power lens and the eye based on a position adjustment command from the input section. The power adjustment section adjusts the power of the variable power lens based on a power adjustment command from the input section. The control unit stores the position information of the variable power lens and the power information of the variable power lens in association with each other in the storage unit. The power adjustment section adjusts the power of the variable power lens based on the position information of the variable power lens and the power information of the variable power lens.

In a certain aspect, storing the position information of the variable power lens and the power information of the variable power lens in association with each other in the storage unit means that the position information of the variable power lens and the power information of the variable power lens are stored in association with each other. This includes storing each piece of lens power information in association with each other in a storage unit.

In a certain aspect, the control unit is configured to perform a control unit based on position information of the two or more variable power lenses stored in the storage unit and power information of the variable power lens associated with each of the position information of the two or more variable power lenses. Then, interpolated data for adjusting the power of the variable power lens is generated.

In one aspect, the autofocus glasses further include a display unit built into or superimposed on the variable power lens. The display unit displays the adjustment position of the variable power lens based on the distance from the visual target to the variable power lens.

In one aspect, the autofocus glasses further include a distance sensor for measuring the distance from the variable power lens to the visual target. The control unit calculates the distance from the variable power lens to the visual target based on the signal acquired from the distance sensor, and outputs the calculated distance to the display unit.

In one aspect, the input unit may accept an input of a distance from the variable power lens to the visual target. The control section outputs the distance to the display section based on the distance.

In one aspect, the input unit receives an input for completing adjustment of the power of the variable power lens. Based on the input, the control unit displays an instruction for the user to return the variable power lens to the initial position on the display unit.

In one aspect, the input unit receives an input for completing adjustment of the power of the variable power lens. The control unit moves the variable power lens to the initial position using the position adjustment mechanism based on the input.

In some aspects, some or all of the position adjustment mechanism is removable.
According to another embodiment, a method of power adjustment for autofocus glasses is provided. This method includes the steps of adjusting the distance between the variable power lens and the eye based on a position adjustment command from the input section, and adjusting the power of the variable power lens based on the power adjustment command from the input section. and a step of associating the position information of the variable power lens with the power information of the variable power lens, and adjusting the power of the variable power lens based on the position information of the variable power lens and the power information of the variable power lens. step.

In one aspect, the step of associating the positional information of the variable power lens with the power information of the variable power lens includes the step of associating the positional information of the variable power lens with the power information of the variable power lens, and the step of associating the positional information of the variable power lens with the power information of the variable power lens. and the step of associating the

In one aspect, the method includes determining the power of the variable power lens based on position information of the two or more variable power lenses and power information of the variable power lens associated with each of the position information of the two or more variable power lenses. The method further includes the step of generating interpolated data for power adjustment.

In one aspect, the method further includes displaying the adjustment position of the variable power lens on the display based on the distance from the visual target to the variable power lens.

In one aspect, the method further includes calculating the distance from the variable power lens to the viewing target based on the signal obtained from the distance sensor, and outputting the calculated distance to the display.

In one aspect, the method further includes receiving an input of a distance from the variable power lens to the visual target, and outputting the distance to the display unit based on the distance.

In one aspect, the method includes the steps of: receiving input to complete adjustment of the power of the variable power lens; and, based on the input, instructing the display to cause the user to return the position of the variable power lens to an initial position. and displaying.

In certain aspects, the method further includes accepting input to complete adjustment of the power of the variable power lens, and moving the position of the variable power lens to an initial position based on the input.

According to another embodiment, a program is provided for causing one or more processors to execute any of the methods described above.

According to an embodiment, it is possible for a user to complete the initial setting of the power of the variable power lens without having to reinstall the viewing target.

These and other objects, features, aspects, and advantages of this disclosure will become apparent from the following detailed description of this disclosure, taken in conjunction with the accompanying drawings.

FIG. 1 is a diagram illustrating an example of the configuration of autofocus glasses 100 according to an embodiment. It is a figure showing an example of variable power lens 101 of autofocus eyeglasses 100 according to a certain embodiment. 5 is a diagram illustrating an example of an outline of a procedure for adjusting the power of the variable power lens 101. FIG. 1 is a diagram showing an example of a circuit configuration of autofocus glasses 100. FIG. 6 is a diagram showing a first example of a procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. FIG. 7 is a diagram showing a second example of a procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. FIG. 7 is a diagram showing a third example of a procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. FIG. 8 is a diagram showing an example of interpolation information in FIG. 7. FIG.

Hereinafter, embodiments of the technical idea according to the present disclosure will be described with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.

<A. Basic configuration>
First, the basic configuration of autofocus glasses according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing an example of the configuration of autofocus glasses 100 according to the present embodiment. The autofocus glasses 100 are glasses that can change the power of the lenses provided. Therefore, multiple users with different visual acuities can use the same autofocus glasses 100.

The autofocus glasses 100 include a variable power lens 101, a frame 102, a control section 103, an input section 104, a storage section 105, a power supply section 106, a communication section 107, a distance sensor 108, and a display section 109. , a position adjustment mechanism 110, and a power adjustment section 111.

The variable power lens 101 is a lens whose power, that is, the refractive index of light, can be changed. Further, the respective powers of the left and right variable power lenses 101 may be different from each other. In one aspect, variable power lens 101 may be a liquid crystal lens. A liquid crystal lens allows the power of the liquid crystal lens itself to be adjusted by changing the liquid crystal based on an input voltage. In other aspects, the variable power lens 101 may be a liquid lens. A liquid lens allows the power of the liquid lens itself to be adjusted by adjusting the amount of liquid contained within the lens using, for example, a pump or the like.

Frame 102 houses variable power lens 101 and other components. In one aspect, part or all of the variable power lens 101 and the control unit 103 to the position adjustment mechanism 110 may be removable from the frame 102. In that case, the user can attach each part to the frame 102 as necessary. In other aspects, the frame 102 may be made of resin, metal, wood, and any other materials or combinations thereof.

The control unit 103 controls the overall operation of the autofocus glasses 100. The input unit 104 receives input of setting information for the variable power lens 101. In one aspect, the input unit 104 may include any input means such as a dial, a touch panel, or a button, and receives user input from the input means. The input unit 104 can receive input of power information and position information of the variable power lens 101 from the user.

The "setting information" includes "power information" and "position information (distance information)" of the left and right variable power lenses 101. The control unit 103 adjusts the voltage applied to the variable power lens 101, which is a liquid crystal lens, or the amount of liquid in the variable power lens 101, which is a liquid lens, via the power adjustment unit 111, based on the power information included in the setting information. obtain. "Position information (distance information)" indicates the position of the variable power lens 101 with respect to the eye (distance from the variable power lens 101 to the eye). The control unit 103 can adjust the position of the variable power lens 101 via the position adjustment mechanism 110 based on the position information of the variable power lens 101 input from the input unit 104.

In one aspect, the input unit 104 is divided into a first input unit for receiving input of power information of the variable power lens 101 and a second input unit for receiving input of position information of the variable power lens 101. You can leave it there. In other aspects, the input section 104 may be divided into an arbitrary number of input sections for receiving other inputs.

The storage unit 105 stores setting information used when the control unit 103 adjusts the power of the variable power lens 101. The control unit 103 stores the setting information acquired from the input unit 104 or the communication unit 107 in the storage unit 105. The control unit 103 can change the power of the variable power lens 101 as appropriate based on the setting information stored in the storage unit 105. Furthermore, the storage unit 105 stores programs executed by the control unit 103.

The power supply section 106 provides power to all or part of the variable power lens 101, the control section 103, the input section 104, the storage section 105, the communication section 107, the distance sensor 108, the display section 109, and the position adjustment mechanism 110.

The communication unit 107 can communicate with any device such as a computer, smartphone, or tablet. For example, the control unit 103 may obtain instructions (setting information, etc.) from an application installed on a smartphone or the like via the communication unit 107 instead of the input unit 104.

Distance sensor 108 may measure the distance from variable power lens 101 or the user's eye to the viewing target. The distance sensor 108 outputs a signal indicating the measurement result of the distance from the variable power lens 101 or the user's eyes to the visual target to the control unit 103. In one aspect, the control unit 103 may calculate the distance from the variable power lens 101 or the user's eyes to the visual target based on the signal acquired from the distance sensor 108.

The display unit 109 displays various information based on commands from the control unit 103. For example, power information of the variable power lens 101, position information to be set in the position adjustment mechanism 110, instructions for initial setting of the autofocus glasses 100, etc. may be displayed. In one aspect, the display unit 109 may display the distance to the visual target acquired by the distance sensor 108.

The position adjustment mechanism 110 is used for initial setting of the autofocus glasses 100. The position adjustment mechanism 110 can adjust the distance from the eyes of the user wearing the autofocus glasses 100 to the variable power lens 101 (the position of the variable power lens 101) by moving the variable power lens 101.

As an example, assume that a user uses autofocus glasses 100 to visually recognize a visual target. When the position of the variable power lens 101 is changed by the position adjustment mechanism 110, the angle of incidence of the reflected light from the visual target on the variable power lens 101 changes. As a result, it appears to the user wearing the autofocus glasses 100 that the distance from the user to the visual target has changed. For example, by inputting an instruction to the position adjustment mechanism 110 via the input unit 104, the user can artificially change the distance from his/her eyes to the target to be viewed from a long distance, a medium distance, or a short distance. be able to.

The above-mentioned position information (distance information) is the distance from the user's eyes to the variable power lens 101, and at the same time pseudo-indicates the distance from the user's eyes or the variable power lens 101 to the visual object. By changing the positional information of the variable power lens 101, the user can, for example, pseudo-view a visual target that is far, intermediate, or short distance away from his/her own eyes without moving the visual target. I can do it. A user can adjust the power of the variable power lens 101 using this function. A specific method for adjusting the power of the variable power lens 101 will be explained with reference to FIG. 3.

In one aspect, the position adjustment mechanism 110 may adjust the position of the variable power lens 101 based on a command from the control unit 103. In another aspect, the position adjustment mechanism 110 may adjust the position of the variable power lens 101 based on a command input from the input unit 104. In other aspects, the position adjustment mechanism 110 may include an actuator such as a motor. In other aspects, a part (only the motor, etc.) or all of the position adjustment mechanism 110 may be removable from the autofocus glasses 100. By making the position adjustment mechanism 110 removable, the weight of the autofocus glasses 100 can be reduced.

The power adjustment unit 111 adjusts the power of the left and right variable power lenses 101 based on a command from the control unit 103. Adjusting the power of the variable power lens 101 here may include, for example, adjusting the voltage to the variable power lens 101 or adjusting the amount of liquid within the variable power lens 101. The control unit 103 can adjust the power of the variable power lens 101 based on setting information of the variable power lens 101 acquired from the input unit 104 or the communication unit 107, which will be described later.

FIG. 2 is a diagram showing an example of the variable power lens 101 of the autofocus glasses 100 according to the present embodiment. In the example of FIG. 2, the reflected light from the visual target located at a far distance (A), a middle distance (B), and a short distance (C) with respect to the variable power lens 101 is reflected from the variable power lens 101. It shows how it reaches the lens 101. In this way, when the distance from the variable power lens 101 to the visual object differs, the angle of incidence of light entering the variable power lens 101 also changes. The light that has passed through the variable power lens 101 reaches the retina 202 via the crystalline lens 201 of the user's eye.

Therefore, by referring to the acquired setting information (power information, position information), the control unit 103 adjusts the variable power lens 101 according to the distance from the current user's eyes or the variable power lens 101 to the visual object. Adjust the refractive index of

In the following explanation, each visual object located at a long distance, a medium distance, and a short distance with respect to the variable power lens 101 will be referred to as a "long-distance visual object," a "medium-distance visual object," and a "near-range visual object." "Visual object" respectively. Further, the power of the variable power lens 101 when the user wears the autofocus glasses 100 to view objects at long distances, intermediate distances, and short distances is referred to as "long distance power", "medium distance power", and These are respectively called "near-range frequencies." Moreover, the long distance, intermediate distance, and short distance positions with respect to the variable power lens 101 are simply referred to as "near distance position," "middle distance position," and "long distance position," respectively.

<B. Flow of adjusting the power of the variable power lens 101>
Next, a specific flow of the method for adjusting the power of the variable power lens 101 will be explained. FIG. 3 is a diagram illustrating an example of an outline of a procedure for adjusting the power of the variable power lens 101. Referring to FIG. 3, a procedure in which a user uses the position adjustment mechanism 110 to set the long-distance power, intermediate-distance power, and near-distance power of the variable power lens 101 will be described. The following adjustment of the power of the variable power lens 101 may be performed for each of the left and right variable power lenses 101.

The position adjustment mechanism 110 can move the variable power lens 101 in parallel. In one aspect, the position adjustment mechanism 110 may include an actuator, a linear motion mechanism, etc., and may have a shape that extends the fitted portion of the variable power lens 101 of the frame 102, as shown in FIG. Good too.

In step S1, the control unit 103 calculates the distance from the variable power lens 101 to the visual target 302 placed on a desk or the like by the user, based on the signal acquired from the distance sensor 108. In one aspect, the control unit 103 may receive an input of the distance from the variable power lens 101 to the visual target 302 via the input unit 104.

In step S2, the user moves the variable power lens 101 to the position 301A (long distance position) using the position adjustment mechanism 110 according to the instructions displayed on the display unit 109. In one aspect, the position adjustment mechanism 110 can be driven based on a position adjustment command from the control unit 103 or the input unit 104. When the variable power lens 101 is at the position 301A, it appears to the user that the visual object 302 is far away (eg, 2 meters from the user's eyes).

Display unit 109 can display instructions to the user. For example, if the input unit 104 is a dial, the display unit 109 may display the scale of the dial to be adjusted. Further, if the input unit 104 is a button or a touch panel, the display unit 109 may display a numerical value to be input. In another aspect, when the control unit 103 receives input of position information of the variable power lens 101 from another terminal via the communication unit 107, the terminal may display instructions to the user on the display. At this time, the control unit 103 may transmit instructions to the user to the terminal via the communication unit 107.

In step S3, the user inputs the power into the input unit 104 and adjusts the long-distance power of the variable power lens 101 using the power adjustment unit 111. The control unit 103 stores the input power of the variable power lens 101 in the storage unit 105. In one aspect, the control unit 103 stores the input power of the variable power lens 101 in the storage unit 105 based on the input unit 104 receiving an input for completing adjustment of the power of the variable power lens 101. You may. From the next time onwards, when the user is viewing an object at a long distance, the control unit 103 controls the power adjustment unit 111 to adjust the frequency based on the instruction input from the input unit 104 or the signal from the distance sensor 108. The power of the variable power lens 101 can be changed to the power adjusted in this step. The user can complete the long-distance power adjustment of the variable power lens 101 by inputting an instruction to complete the long-distance power adjustment of the variable power lens 101 into the input unit 104.

In step S4, the user moves the variable power lens 101 to position 301B (middle distance position) using the position adjustment mechanism 110 according to the instructions displayed on the display unit 109. In one aspect, the position adjustment mechanism 110 can be driven based on a position adjustment command from the control unit 103 or the input unit 104. When the variable power lens 101 is in position 301B, the viewing object 302 appears to the user to be at an intermediate distance (for example, 80 centimeters from the eye). The display unit 109 can display instructions to the user similarly to step S2.

In step S5, the user inputs the power into the input section 104, and adjusts the middle distance power of the variable power lens 101 using the power adjustment section 111. The control unit 103 stores the input power of the variable power lens 101 in the storage unit 105. In one aspect, the control unit 103 stores the input power of the variable power lens 101 in the storage unit 105 based on the input unit 104 receiving an input for completing adjustment of the power of the variable power lens 101. You may. From next time onwards, when the user visually observes an object at a medium distance, the control unit 103 controls the power adjustment unit 111 to The power of the variable power lens 101 can be changed to the power adjusted in this step. The user can complete the adjustment of the intermediate distance power of the variable power lens 101 by inputting an instruction to complete the adjustment of the intermediate distance power of the variable power lens 101 into the input unit 104 .

In step S6, the user moves the variable power lens 101 to the position 301C (close position) using the position adjustment mechanism 110 according to the instructions displayed on the display unit 109. In one aspect, the position adjustment mechanism 110 can be driven based on a position adjustment command from the control unit 103 or the input unit 104. When the variable power lens 101 is at the position 301C, the visual object 302 appears to the user to be at a short distance (for example, 20 centimeters from the eye). The display unit 109 can display instructions to the user similarly to step S2.

In step S7, the user inputs the power into the input unit 104 and adjusts the near-distance power of the variable power lens 101 using the power adjustment unit 111. The control unit 103 stores the input power of the variable power lens 101 in the storage unit 105. In one aspect, the control unit 103 stores the input power of the variable power lens 101 in the storage unit 105 based on the input unit 104 receiving an input for completing adjustment of the power of the variable power lens 101. You may. From the next time onwards, when the user is visually observing an object at a short distance, the control unit 103 controls the frequency adjustment unit 111 to The power of the variable power lens 101 can be changed to the power adjusted in this step. The user can complete the adjustment of the near-distance power of the variable power lens 101 by inputting an instruction to complete the adjustment of the near-distance power of the variable power lens 101 into the input unit 104 .

In one aspect, the control unit 103 calculates position information of the visual target 302 (pseudo distance from the variable power lens 101 or the user's eyes to the visual target 302) based on the signal from the distance sensor 108. good. In that case, the control unit 103 may automatically adjust the power of the variable power lens 101 based on the position information. After the automatic adjustment, the control unit 103 receives input of power information for fine adjustment from the user via the input unit 104, and can adjust the power of the variable power lens 101 based on the power information.

As described above, the autofocus glasses 100 can change the position of the variable power lens 101 using the position adjustment mechanism 110. With this function, the user can adjust the power of the variable power lens 101 when viewing objects at multiple distances (near distance, middle distance, long distance, etc.) without physically moving the viewing target 302. I can do it.

<C. Circuit configuration>
FIG. 4 is a diagram showing an example of a circuit configuration of the autofocus glasses 100. The circuit configuration of the autofocus glasses 100 will be described with reference to FIG. 4. In some aspects, some or all of the circuitry shown in FIG. 4 may include peripherals such as sensors, mechanical components, and the like.

The autofocus glasses 100 have a circuit configuration including a variable power lens 101, a control section 103, an input section 104, a storage section 105, a power supply section 106, a communication section 107, a distance sensor 108, and a display section 109. , a position adjustment mechanism 110, and a power adjustment section 111.

The variable power lens 101 may include a terminal electrically connected to the power adjustment unit 111 and its peripheral circuit.

The control unit 103 may include, for example, a CPU (Central Processing Unit) (not shown) and a RAM (Random Access Memory) (not shown). Further, in a certain aspect, the control unit 103 may be a built-in CPU, an FPGA (Field-Programmable Gate Array), or a combination thereof. The control unit 103 can execute programs for realizing various functions of the autofocus glasses 100.

The input unit 104 may be realized by an interface such as a button, a touch panel, or a dial, or a combination thereof for receiving input from a user. Furthermore, the input unit 104 includes a circuit that processes inputs from these interfaces.

The storage unit 105 stores programs executed by the control unit 103, setting information for the variable power lens 101, and the like. In one aspect, the storage unit 105 may be realized by a small HDD (Hard Disk Drive), SSD (Solid State Drive), or flash memory.

The power supply section 106 may include a battery (not shown), a transformer (not shown), and a power supply section (not shown). The power feeding unit may include any terminal including, for example, a USB (Universal Serial Bus) terminal, and can receive power from the outside via the terminal to charge the battery.

The communication unit 107 may be realized by a wired LAN (Local Area Network) port, a Wi-Fi (registered trademark) module, or the like. In other aspects, the communication unit 107 may transmit and receive data using communication protocols such as TCP/IP (Transmission Control Protocol/Internet Protocol) and UDP (User Datagram Protocol).

The distance sensor 108 measures the distance (positional information) from the variable power lens 101 or the user's eyes to the visual target using any means such as laser, infrared rays, images, or ultrasound, or a combination thereof. In one aspect, distance sensor 108 may include a circuit that processes signals acquired by any sensor to measure distance. In another aspect, the control unit 103 may calculate the distance (position information) from the variable power lens 101 or the user's eyes to the visual target based on the signal from the distance sensor 108.

The display unit 109 may be realized by a liquid crystal display, an organic EL (Electro Luminescence) display, or the like. The display unit 109 is connected to the control unit 103 by a signal line, and can change display content based on commands from the control unit 103.

The position adjustment mechanism 110 may include an actuator, a linear motion mechanism, a belt, a gear, a portion of the frame 102, or a combination thereof for adjusting the position of the variable power lens 101. The position adjustment mechanism 110 can adjust the position of the variable power lens 101 by transmitting power from an actuator.

When the variable power lens 101 is a liquid crystal lens, the power adjustment unit 111 includes a terminal that applies voltage to the variable power lens 101 and a peripheral circuit that adjusts the voltage. Furthermore, when the variable power lens 101 is a liquid lens, the power adjustment unit 111 includes a pump, its control circuit, and the like.

<D. Flowchart＞
Next, a procedure for adjusting the power of the variable power lens 101 in the autofocus glasses 100 will be described with reference to FIGS. 5 to 7. In one aspect, the control unit 103 may read a program for executing the processes shown in FIGS. 5 to 7 from the storage unit 105 and execute the program. In other aspects, part or all of the processing may be implemented as a combination of circuit elements configured to perform the processing.

FIG. 5 is a diagram showing a first example of a procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. The procedure shown in FIG. 5 is a procedure in which the user adjusts the power of the variable power lens 101 while looking at a visual target placed on a desk or the like.

In step S510, the control unit 103 receives a setting input for the distance to the visual target via the input unit 104. The distance to the visual target here is the actual distance from the user's eyes or the variable power lens 101 to the visual target. In one aspect, the control unit 103 may obtain the distance to the visual target via the distance sensor 108.

In step S520, the control unit 103 receives input of position information of the variable power lens 101 from the user via the input unit 104. The control unit 103 outputs a command to the position adjustment mechanism 110 to adjust the position of the variable power lens 101 based on the acquired position information. In one aspect, the control unit 103 may output position information of the variable power lens 101 to be input by the user to the display unit 109 based on the distance to the visual target acquired in step S510. In another aspect, the control unit 103 may output the distance to the visual target to the display unit 109.

In step S530, the control unit 103 receives input of power information of the variable power lens 101 from the user via the input unit 104. The control unit 103 outputs a command to the power adjustment unit 111 to adjust the power of the variable power lens 101 based on the acquired power information.

In step S540, the control unit 103 determines whether an input indicating completion of adjustment of the power of the variable power lens 101 is received via the input unit 104. As an example, the input unit 104 may include a button or the like for accepting an input of completion of adjustment. When the control unit 103 determines that the input indicating completion of adjustment of the power of the variable power lens 101 has been received (YES in step S540), the control unit 103 moves the control to step S550. Otherwise (YES in step S540), the control unit 103 moves the control to step S530.

In step S550, the control unit 103 stores the acquired setting information (position information, frequency information) in the storage unit 105. More specifically, the control unit 103 associates the position information acquired in step S520 with the frequency information acquired in step S530. As an example, if position information is input such that the distance to the visual target is a long distance in step S520, the control unit 103 may change the power information input in step S530 to the long distance of the variable power lens 101. It is stored in the storage unit 105 as a frequency. The setting information stored in the storage unit 105 is used to adjust the power of the variable power lens 101 when the user uses the autofocus glasses 100 to view something.

In one aspect, the control unit 103 outputs a command to the position adjustment mechanism 110 based on receiving an input indicating completion of adjustment of the power of the variable power lens 101, and returns the position of the variable power lens 101 to the initial position. You may return it. In another aspect, the display unit 109 displays information prompting the user to return the position of the variable power lens 101 to the initial position based on receiving the input that the adjustment of the power of the variable power lens 101 is completed. You can.

FIG. 6 is a diagram showing a second example of the procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. The flowchart in FIG. 6 is similar to the one shown in FIG. This is different from the flowchart.

In step S660, the control unit 103 determines whether or not an input indicating that all adjustments have been completed has been received from the user via the input unit 104. If the control unit 103 determines that the input of completion of all adjustments has been received from the user (YES in step S660), the control unit 103 ends the control. Otherwise (NO in step S660), the control unit 103 moves the control to step S510. Then, the control unit 103 again receives from the user an input of positional information of a different visual target and an input of power information, and adjusts the power of the variable power lens 101.

In one aspect, the control unit 103 may output a command to the position adjustment mechanism 110 to return the position of the variable power lens 101 to the initial position based on receiving an input from the user that all adjustments are complete. . In another aspect, the display unit 109 may display information prompting the user to return the position of the variable power lens 101 to the initial position based on receiving the input from the user that all adjustments have been completed.

FIG. 7 is a diagram showing a third example of the procedure for adjusting the power of the variable power lens 101 of the autofocus glasses 100. The flowchart in FIG. 7 differs from the flowcharts in FIGS. 5 and 6 in that focus interpolation information for the variable power lens 101 is generated.

In step S770, the control unit 103 generates interpolation information based on the setting information (position information, frequency information) saved in the processing from steps S510 to S660. "Interpolation information" includes, for example, "the power of the variable power lens 101 when the visual target is at position (A)" and "the power of the variable power lens 101 when the visual target is at position (B)". This is "the power of the variable power lens 101 when the visual target is at a position other than positions (A) and (B)" obtained by interpolation calculation based on .

In one aspect, the control unit 103 may output a command to the position adjustment mechanism 110 to return the position of the variable power lens 101 to the initial position based on receiving an input from the user that all adjustments are complete. . In another aspect, the display unit 109 may display information prompting the user to return the position of the variable power lens 101 to the initial position based on receiving the input from the user that all adjustments have been completed.

FIG. 8 is a diagram showing an example of interpolation information in FIG. 7. For example, assume that the control unit 103 stores three pieces of setting information 810A, 810B, and 810C in the storage unit 105. Each setting information includes frequency information corresponding to certain position information. For example, the setting information 810A includes the power (A) for short distance (A), the setting information 810B includes the power (A) for intermediate distance (B), and the setting information 810C includes the power (C) for long distance (C). Suppose that it includes.

At this time, when the user wears the autofocus glasses 100 and visually recognizes a visual target that is a distance between the short distance (A) and the intermediate distance (B), the power of the appropriate variable power lens 101 is also the power ( It is predicted that the value will be between A) and (B). Therefore, the control unit 103 generates interpolation information for the power of the distance that is not measured based on two or more pieces of setting information (for example, setting information (A) to (C)) acquired during the power adjustment.

Line segments 820AB and 820BC shown in FIG. 8 are examples of set values of the power of the variable power lens 101 obtained by interpolation. In one aspect, the control unit 103 may obtain interpolation information based on a curve that passes through three or more points of setting information (position information, frequency information). In another aspect, the interpolation information may be data of a calculation formula generated based on a plurality of setting information (position information, frequency information) stored in the storage unit 105. In another aspect, the interpolation information may be frequency information at another position generated based on a plurality of setting information stored in the storage unit 105. In another aspect, the control unit 103 does not need to generate interpolation information in advance, but dynamically generates interpolation information based on a plurality of pieces of setting information stored in the storage unit 105 as necessary. You may. By using the interpolation information, the autofocus glasses 100 can appropriately adjust the power of the variable power lens 101 even for a viewing target at a distance for which the user has not adjusted the power of the variable power lens 101 in advance.

In one aspect, the autofocus glasses 100 receive an input from the user via the input unit 104 for selecting the power of the variable power lens 101 or the positional information of the visual target (50 cm, 2 meters, etc.). Based on this, the power information stored in the storage unit 105 may be selected, and the power of the variable power lens 101 may be adjusted based on the power information.

In another aspect, the autofocus glasses 100 select the power information stored in the storage unit 105 based on the input signal from the distance sensor 108 (position information of the visual target), and calculate the power based on the power information. The power of the variable lens 101 may be adjusted.

As described above, the autofocus glasses 100 can change the position of the variable power lens 101 using the position adjustment mechanism 110. With this function, the user can adjust the power of the variable power lens 101 when viewing objects at multiple distances (near distance, middle distance, long distance, etc.) without physically moving the viewing target 302. I can do it.

Further, the variable power lens 101 can generate interpolated information based on power information at a plurality of set distances. With this function, the autofocus glasses 100 can appropriately adjust the power of the variable power lens 101 even for a viewing target at a distance for which the user has not adjusted the power of the variable power lens 101 in advance.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the claims rather than the above description, and it is intended that all changes are included within the meaning and scope equivalent to the claims. Furthermore, the disclosures described in the embodiments and each modification are intended to be implemented alone or in combination to the extent possible.

100 autofocus glasses, 101 variable power lens, 102 frame, 103 control section, 104 input section, 105 storage section, 106 power supply section, 107 communication section, 108 distance sensor, 109 display section, 110 position adjustment mechanism, 111 power adjustment section , 201 crystalline lens, 202 retina, 302 visual object.

Claims (18)

Autofocus glasses,
variable power lens,
a position adjustment mechanism that adjusts the distance between the variable power lens and the eye;
a power adjustment section for adjusting the power of the variable power lens;
an input unit that receives input of instructions for the autofocus glasses;
a storage unit for storing power information of the variable power lens;
a distance sensor for measuring a distance from the variable power lens to a visual target;
and a control unit that controls the autofocus glasses,
The control unit calculates the distance from the variable power lens to the visual target based on the signal acquired from the distance sensor,
The position adjustment mechanism adjusts the distance between the variable power lens and the eye based on a position adjustment command from the input unit,
The power adjustment unit adjusts the power of the variable power lens based on a power adjustment command from the input unit,
The control unit stores position information of the variable power lens and power information of the variable power lens in association with each other in the storage unit,
The power adjustment unit adjusts the power of the variable power lens based on position information of the variable power lens and power information of the variable power lens. Storing the position information of the variable power lens and the power information of the variable power lens in association with each other in the storage unit means that the position information of the two or more variable power lenses and the power information of the two or more power lenses are stored in association with each other. The autofocus eyeglasses according to claim 1, further comprising storing the power information of the variable lenses in association with each other in the storage unit. The control unit stores position information of the two or more variable power lenses stored in the storage unit and power information of the variable power lens associated with each position information of the two or more variable power lenses. The autofocus glasses according to claim 2, wherein interpolated data for power adjustment of the variable power lens is generated based on the above. Further comprising a display section built into or superimposed on the variable power lens,
The autofocus glasses according to any one of claims 1 to 3, wherein the display section displays the adjustment position of the variable power lens based on the distance from the visual object to the variable power lens. The autofocus glasses according to claim 4, wherein the control section outputs the calculated distance to the display section. The input unit receives an input of a distance from the variable power lens to the visual target,
The autofocus glasses according to claim 4, wherein the control unit outputs the input distance to the display unit based on the received input of the distance. The input unit receives an input for completing adjustment of the power of the variable power lens,
The autofocus according to any one of claims 4 to 6, wherein the control unit displays, on the display unit, an instruction for causing the user to return the position of the variable power lens to an initial position based on the input. glasses. The input unit receives an input for completing adjustment of the power of the variable power lens,
The autofocus glasses according to any one of claims 1 to 7, wherein the control unit moves the position of the variable power lens to an initial position by the position adjustment mechanism based on the input. Autofocus glasses according to any one of claims 1 to 8, wherein a part or all of the position adjustment mechanism is removable. A method for adjusting the power of autofocus glasses,
calculating the distance from the variable power lens to the visual target based on the signal obtained from the distance sensor;
adjusting the distance between the variable power lens and the eye based on a position adjustment command from the input unit;
adjusting the power of the variable power lens based on a power adjustment command from the input unit;
associating position information of the variable power lens with power information of the variable power lens;
A method comprising adjusting the power of the variable power lens based on position information of the variable power lens and power information of the variable power lens. The step of associating the position information of the variable power lens with the power information of the variable power lens includes linking each of the position information of the two or more variable power lenses and each of the power information of the two or more variable power lenses. 11. The method of claim 10, comprising the step of associating. The power of the variable power lens is determined based on the position information of the two or more variable power lenses and the power information of the variable power lens associated with each of the position information of the two or more variable power lenses. 12. The method of claim 11, further comprising generating interpolated data for adjustment. The method according to any one of claims 10 to 12, further comprising the step of displaying an adjustment position of the variable power lens on a display unit based on a distance from the visual object to the variable power lens. The method according to claim 13, further comprising the step of outputting the calculated distance to the display unit. receiving an input of a distance from the variable power lens to the visual target;
The method according to claim 13, further comprising the step of outputting the inputted distance to the display unit based on the received input of the distance. accepting input for completing adjustment of the power of the variable power lens;
The method according to any one of claims 13 to 15, further comprising the step of displaying, on the display unit, an instruction for causing the user to return the position of the variable power lens to an initial position based on the input. accepting input for completing adjustment of the power of the variable power lens;
17. The method according to any of claims 10 to 16, further comprising the step of moving the position of the variable power lens to an initial position based on the input. A program for causing one or more processors to execute the method according to any one of claims 10 to 17.

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