JP2019118500A - Visual target presentation apparatus - Google Patents

Abstract

To efficiently achieve space saving of subjective examination to meet the needs of examiners.SOLUTION: Provided is a visual target presentation apparatus comprising a main body part, which main body part has a target presentation unit and includes a projection optical system for projecting a target light beam emitted from the target presentation unit onto a subject eye, and a housing for containing the projection optical system, and which projects a target light beam onto the subject eye to subjectively measure the optical characteristics of the subject eye. The visual target presentation apparatus comprises: mounting means which allows integral mounting, to the main body part, of an eye refractive power measurement unit for changing the optical characteristics of the target light beam emitted from the target presentation unit, and which also makes various types of eye refractive power measurement units mountable; and communication means which allows communication between the various types of eye refractive power measurement units and operation means, and which enables an eye refractive power measurement unit mounted to the mounting means on the basis of an operation signal from the operation means which operates the eye refractive power measurement unit mounted to the mounting means.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a target presenting apparatus that projects a target luminous flux toward an eye to be consciously measured the optical characteristics of the eye to be examined.

  An optical element in which an optical element such as a spherical lens or a cylinder (astigmatic) lens is disposed in an inspection window of the eye refractive power measurement unit using an eye refractive power measurement unit disposed in front of a subject's eye There is known a subjective optometer that examines (measures) the refractive power of an eye to be examined by presenting a target to the eye to be examined (see Patent Document 1). At this time, the subject checks the visual condition of the presented target by looking into the inspection window of the eye refractive power measurement unit. Also, in recent years, in the subjective optometry apparatus, awareness in consideration of space saving is considered by shortening the distance between the eye refractive power measurement unit and the case for housing the projection optical system having the visual target presenting unit. An optometer is being considered.

JP-A-5-176893

  Conventionally, a subjective type optometry apparatus is composed of a target presenting apparatus, an eye refractive power measurement unit, a table, an operation means, etc., and a large space is required. In particular, the eye refracting power measurement unit and the table are integrally configured, and a large space is required when installing a subjective type optometry apparatus in an eyeglass retailer, a hospital, etc. (for example, as shown in FIG. reference).

  For example, the room may be small in an eyeglass shop, a hospital, etc., and when the conventional subjective optometer as described above is arranged, the space of the room may be lost. For this reason, there is a need for a subjective optometry apparatus that can be disposed in a space-saving manner, and a subjective optometer that considers space saving is considered by integrally connecting the eye refractive power measurement unit and the visual target presentation device. ing.

  However, the subjective type optometer is a device that has been sold for a long time, and in many eyeglass shops, hospitals, etc., the subjective optometer is already disposed. For this reason, when space saving of the subjective type optometry apparatus is performed, it is considered that it is necessary to newly purchase a subjective type optometric apparatus in consideration of space saving. In addition, when the examiner performs space saving after purchasing a conventional subjective optometry apparatus having a configuration as described above, it is necessary to newly purchase a subjective optometry apparatus with space saving taken into consideration. Conceivable.

  In view of the above-described conventional technology, the present disclosure makes it a technical subject to provide a visual target presenting apparatus capable of efficiently providing space saving of a subjective examination in accordance with the needs of an examiner.

  In order to solve the above-mentioned subject, the present invention is characterized by having the following composition.

  A target presenting apparatus according to a first aspect of the present disclosure includes a target presenting unit configured to emit a target luminous flux, and projecting projection luminous flux emitted from the target presenting unit toward an eye to be examined. A target presenting apparatus comprising: a main body having a system, and a housing for housing the projection optical system, and projecting a target luminous flux toward the subject's eye in order to subjectively measure the optical characteristics of the subject's eye And a mounting unit capable of integrally mounting an eye refractive power measurement unit for changing the optical characteristics of a target luminous flux emitted from the target presenting unit to the main body, wherein various types of eye refractive power measurement are performed. Mounting means for mounting the unit, and communication means for enabling communication between various eye refracting power measurement units and operation means, the operation means for operating the eye refractive power measurement unit mounted on the mounting means Eyebrows attached to the attachment means based on the operation signal Characterized in that it comprises a communication means for enabling operating the force measuring unit.

It is a perspective view which shows a visual target presentation apparatus from a front side. It is a perspective view which shows a visual target presentation apparatus from a back side. It is a perspective view showing a subjective type optometry apparatus from the front side. It is a figure explaining a mounting unit. The schematic of the internal structure at the time of removing the external appearance cover of a holding | maintenance unit is shown. It is the figure which looked at the projection optical system from the left side. It is a figure for demonstrating an observation unit. It is a figure which shows an eye refractive power measurement unit. It is a schematic block diagram of a control system in a visual target presentation device, an eye refractive power measurement unit connected to the visual target presentation device, and a controller connected to the visual target presentation device. It is a figure which shows the state which the eye-refractive-power measurement unit fell to the front of the housing. It is a figure explaining an adjustment mark.

<Overview>
Hereinafter, one of the typical embodiments will be described with reference to the drawings. FIGS. 1 to 11 are diagrams for explaining a visual target presenting apparatus according to the present embodiment. In addition, the item classified by <> below may be used independently or in connection.

  In the following description, the depth direction of the visual target presenting apparatus (the front and rear direction of the subject at the time of measurement of the subject) is perpendicular to the Z direction and the depth direction (the test at the time of measurement of the subject The horizontal direction on the flat plane which is the person's left and right direction is described as the X direction, and the vertical direction (vertical direction of the subject at the time of measurement of the subject) as the Y direction.

  For example, the visual target presenting apparatus (for example, the visual target presenting apparatus 9) of the present embodiment has a main body (a projection optical system (for example, the projection optical system 10)) and a housing (for example, the housing 2) For example, the visual target presentation device 1) may be provided. For example, the target presenting apparatus projects a target luminous flux toward the subject's eye in order to subjectively measure the optical characteristics of the subject's eye. For example, as the optical characteristics of the subject's eye to be measured subjectively, eye refractive power (for example, spherical power, astigmatic power, astigmatic axis angle, etc.), contrast sensitivity, binocular vision function (for example, obliqueness amount, stereoscopic vision It may be at least one of functions and the like.

  For example, the visual target presentation device may be provided with mounting means (for example, the mounting unit 90). Also, for example, the visual target presentation device may include a communication unit (for example, the communication unit 110). For example, the mounting unit integrates an eye refractive power measurement unit (for example, the eye refractive power measurement unit 50, the eye refractive power measurement unit 100) for changing the optical characteristics of the target luminous flux emitted from the target presenting unit into the main body. It may be a mounting unit that can be mounted, and various eye refractive power measurement units may be mounted. For example, the communication unit is a communication unit that enables communication between various eye refractive power measurement units and the operation unit (for example, the controller 81 and the controller 140), and operates the eye refractive power measurement unit attached to the attachment unit. The eye refractive power measurement unit attached to the attachment means may be operable based on the operation signal from the operation means.

  As described above, for example, it is a mounting unit that can be mounted integrally on the main body with an eye refractive power measurement unit that changes the optical characteristics of the target luminous flux emitted from the target presenting unit, and various eye refractions Mounting means for mounting the force measurement unit, and communication means for enabling communication between various eye refractive power measurement units and the operation means, the operation means for operating the eye refractive power measurement unit mounted on the mounting means And communication means for enabling the eye refractive power measurement unit mounted on the mounting means to be operable based on the operation signal. As a result, various eye refractive power measurement units can be attached to the visual target presentation device, and a space-saving subjective optometer with any eye refractive power measurement unit attached can be obtained. By this, for example, space saving of the subjective examination can be efficiently provided according to the needs of the examiner. Also, for example, performing a subjective examination in a space-saving manner using an eye refractive power measurement unit desired by the examiner (for example, regardless of the eye refractive power measurement unit of another company and the eye refractive power measurement unit of the company). it can.

<Operating means>
For example, the operation means receives various operation instructions from the examiner. For example, at least one of user interfaces such as a touch panel, a mouse, a joystick, and a keyboard may be used as the operation means. In the present embodiment, the operation means is a touch panel. For this reason, the display also functions as an operating means.

  For example, the operation means may be configured to be able to operate the eye refractive power measurement unit. For example, as the operation means, various dedicated operation means may be used according to various eye refractive power measurement units. Also, for example, as the operation means, operation means used in common by at least two or more eye refractive power measurement units of various eye refractive power measurement units may be used. In addition, in the case of the structure in which the operation means is shared by at least two or more eye refractive power measurement units of various eye refractive power measurement units, and in the case of the operation means that performs operation using a display, an operation screen on the display May be changed according to the eye refractive power measurement unit. That is, the operation screen of the operation means may be changed according to the eye refractive power measurement unit attached to the attachment means.

  For example, the operation means may be configured to be able to operate other members in the main body together with the eye refractive power measurement unit. For example, the operation means may be configured to be able to operate at least a part of members in the projection optical system. As an example, for example, the operation unit may be configured to be able to operate the target presenting unit in the projection optical system. Of course, the operation means capable of operating the other members in the main body may be operation means different from the operation means for operating the eye refractive power measurement unit. In addition, when using the operation means different from the operation means which operates an eye refractive power measurement unit, you may enable it to operate by both operation means about one part operation.

<Eye refractive power measurement unit>
For example, the eye refractive power measurement unit changes the optical characteristics (for example, at least one of spherical power, cylindrical power, cylindrical axis, polarization characteristics, prism, and aberration amount, etc.) of the target light flux. For example, as a configuration for changing the optical characteristics of the target light beam, the configuration may be such that the optical element is controlled. For example, the eye refractive power measurement unit may be configured to use a wavefront modulation element. For example, the eye refractive power measurement unit may be configured to include a pair of left and right lens chamber units for switching and arranging the optical element in the inspection window.

  For example, the various ocular refractive power measurement units may be ocular refractive power measurement units having completely the same configuration. Also, for example, the various ocular refractive power measurement units may be ocular refractive power measurement units having different configurations. For example, an eye refractive power measurement unit having a different configuration has a configuration in which at least a part of the configuration (for example, at least one of the internal configuration of the eye refractive power measurement unit and the external shape of the eye refractive power measurement unit) is changed. It may be In this case, for example, the eye refractive power measurement unit may have a configuration in which a part of the configuration is changed (for example, added, deleted, etc.). As an example, the configuration in which some configurations are changed may be different versions of eye power measurement units. Further, in this case, for example, the eye refractive power measurement units may be configured to be largely different in overall configuration. As an example, the significantly different configurations may be eye power measurement units of different manufacturers.

<Projection optical system>
For example, the projection optical system includes a target presenting unit (for example, the display 11) that emits a target luminous flux, and the target luminous flux emitted from the target presenting unit may be projected toward the eye to be examined. Good. For example, the housing may house the projection optical system. For example, the projection optical system may have at least one or more optical members or the like that project a target luminous flux toward the subject's eye.

  For example, a display may be used as the visual mark presenting unit. For example, as a display, any of LCD (Liquid Crystal Display), organic EL (Electro Luminescence), etc. may be used. For example, a test target such as a Landolt ring target is displayed on the display.

  Also, for example, as the visual mark presenting unit, a DMD (Digital Micromirror Device) may be used. Generally, DMD has high reflectance and is bright. Therefore, compared to the case of using a liquid crystal display using polarized light, it is possible to maintain the light quantity of the target luminous flux.

  Also, for example, the target presenting unit may be configured to have a visible light source for target presentation and a target plate. In this case, for example, the target plate is a rotatable disc plate and has a plurality of targets. The plurality of targets include, for example, targets for visual acuity test used at subjective measurement. For example, the visual acuity test target is prepared with visual targets (visual acuity values 0.1, 0.3,..., 1.5) for each visual acuity value. For example, the target plate is rotated by a motor or the like, and the target is switched and arranged on the optical path along which the target luminous flux is guided to the subject's eye. Of course, as the target presenting unit that projects the target luminous flux, a target presenting unit other than the above-described configuration may be used.

  For example, the projection optical system may have at least one or more optical members or the like that project a target luminous flux toward the subject's eye. For example, the projection optical system has an optical member (for example, concave mirror 13) for guiding the image of the target light beam emitted from the target presenting unit to the eye so as to optically set a predetermined inspection distance. You may

  For example, the projection optical system shifts and enters the target luminous flux emitted from the target presenting unit with respect to the optical axis of the optical member, and projects the target luminous flux toward the eye to be examined. In this case, for example, the visual mark presenting unit may be arranged by inclining the normal direction to the screen of the visual mark presenting unit with respect to the optical axis of the optical member.

  For example, the optical member may be at least one of a concave mirror, a lens, and the like. For example, when the optical member is a concave mirror, the projection optical system reflects the target light flux emitted by the target presenting unit toward the concave mirror and reflects the target light flux reflected by the concave mirror in the housing. A reflecting member (for example, flat mirror 12) may be provided to guide light from the inside to the outside. With such a configuration, the number of members of the projection optical system can be further reduced, and the subjective optometry apparatus can be further saved in space. Of course, the projection optical system is not limited to the above configuration, and the target light flux emitted from the target presenting unit is shifted with respect to the optical axis of the optical member to be incident and project the target light flux toward the eye to be examined The configuration is sufficient.

  For example, as a reflecting member, any of a mirror (for example, a total reflection mirror, a half mirror, etc.), a prism, etc. may be used. Of course, the reflecting member is not limited to this, and may be a member that guides the target luminous flux toward the subject's eye.

  For example, in the present embodiment, the projection optical system may have a projection optical system for the right eye and a projection optical system for the left eye provided in a left-right pair. In this case, for example, it is possible to use a mark presenting unit provided in the left and right pair. For example, in the projection optical system for the right eye and the projection optical system for the left eye, even if the member constituting the projection optical system for the right eye and the member constituting the projection optical system for the left eye are constituted by the same member Good. Also, for example, the right-eye projection optical system and the left-eye projection optical system are members different in at least part of the members constituting the right-eye projection optical system and the members constituting the left-eye projection optical system May be configured by For example, in the projection optical system for the right eye and the projection optical system for the left eye, at least a part of the members is shared by the member constituting the projection optical system for the right eye and the member constituting the projection optical system for the left eye It may be a configuration. Further, for example, the right-eye projection optical system and the left-eye projection optical system are separately provided with a member constituting the right-eye projection optical system and a member constituting the left-eye projection optical system. It may be

<Communication means>
For example, as the communication means, any configuration that enables communication between various eye refractive power measurement units and the operation means is sufficient. For example, the communication unit may have a relay unit. Also, for example, the communication means may have at least one of wireless and wired configurations. For example, the operation means communicates with the eye refractive power measurement unit using a wireless and / or wired configuration. For example, the wireless configuration may be a wireless LAN, infrared communication, Wi-Fi (registered trademark), Bluetooth (registered trademark), or the like. Also, for example, as a wired configuration, a configuration such as a USB cable or a LAN cable may be used.

  For example, the communication means may be arranged at any position. For example, the communication means may be provided outside the main body. In this case, for example, it may be provided outside the housing. Also, for example, the communication means may be provided inside the main body. In this case, for example, the communication means may be provided inside the housing.

  The communication unit may be configured to allow communication between at least one member of the projection optical system and the operation unit in addition to the eye refractive power measurement unit mounted on the mounting unit. In this case, for example, the communication means can communicate at least one of the members in the projection optical system with the operation means for operating the eye refractive power measurement unit mounted on the mounting means, and the eye refractor mounted on the mounting means At least one of the members in the projection optical system may be operable based on an operation signal from an operation unit that operates the force measurement unit. As one example, at least one of the members in the projection optical system may be a target presenting unit. In this case, for example, the communication unit may be able to communicate between the target presenting unit in the projection optical system and the operation unit for operating the eye refractive power measurement unit mounted on the mounting unit.

  As described above, for example, the communication unit can communicate at least one of the members in the projection optical system with the operation unit for operating the eye refractive power measurement unit mounted on the mounting unit, and is mounted on the mounting unit. At least one of the members in the projection optical system may be operable based on an operation signal from an operation means for operating the eye refractive power measurement unit. This makes it possible to operate the projection optical system and the eye refracting power measurement unit by one operation means, so that the subjective inspection can be performed with less space. That is, the examiner can obtain a more space saving conscious optometer.

  For example, when the communication unit has a relay unit, for example, the communication unit may relay the operation signal of the operation unit operating the eye refractive power measurement unit mounted on the mounting unit (for example, the first control unit ) May be included. For example, the first relay unit is attached to the attachment means by connecting the eye refractive power measurement unit attached to the attachment means and the operation means for operating the eye refractive power measurement unit attached to the attachment means. The eye refractive power measurement unit mounted on the mounting means may be operable based on an operation signal from the operation means for operating the eye refractive power measurement unit.

  For example, the first relay unit may be configured to be able to relay so that the eye refractive power measurement unit can be operated by the operation signal from the operation means for operating the eye refractive power measurement unit. For example, the first relay unit is configured to convert the operation signal from the operation means into an operation signal for driving the eye refractive power measurement unit so that the eye refractive power measurement unit can be operated by the operation signal from the operation means. It may be That is, the first relay unit converts the operation signal from the operation means into an operation signal which can drive the mounted eye refractive power measurement unit according to various eye refractive power measurement units mounted on the mounting means. The configuration may be Of course, for example, the first relay unit may be configured to only relay the operation signal.

  Also, for example, the first relay unit may be configured to be able to relay at least one of the members in the projection optical system so as to be able to be operated by an operation signal from the operation means for operating the eye refractive power measurement unit. For example, at least one of the members in the projection optical system drives the operation signal from the operation unit such that the first relay unit can operate at least one of the members in the projection optical system by the operation signal from the operation unit. It may be configured to be converted into an operation signal to be processed.

  For example, the communication means may be at least one of wireless and wired operation means for operating the eye refractive power measurement unit attached to the attachment means and the eye refractive power measurement unit attached to the attachment means for the first relay unit. May be connected by

  As described above, for example, the communication unit has the first relay unit relaying the operation signal of the operation unit operating the eye refractive power measurement unit mounted on the mounting unit, and the communication unit is mounted on the first relay unit. Operating means for operating the eye refractive power measurement unit mounted on the mounting means by being connected to the operating means for operating the eye refractive power measurement unit mounted on the eye refractive power measuring unit mounted on the means and the mounting means The eye refractive power measurement unit mounted on the mounting means may be operable based on an operation signal from the camera. Thus, the eye refractive power measurement unit can be easily operated simply by connecting the eye refractive power measurement unit and the operation means.

  For example, the visual target presenting apparatus may be configured to use an external relay unit. For example, in the case of using an external relay unit, the visual target presenting device may be provided with relay unit mounting means for mounting the external relay unit. For example, the visual target presenting apparatus mounts the second relay unit (for example, the relay unit 200, the relay unit 210) that relays the operation signal of the operation unit operating the eye refractive power measurement unit mounted on the mounting unit. A relay unit mounting unit (for example, relay unit mounting unit 111) may be provided. For example, the second relay unit attached to the relay attachment means is connected to the operation unit for operating the eye refractive power measurement unit attached to the attachment means and the eye refractive power measurement unit attached to the attachment means Thus, the eye refractive power measurement unit mounted on the mounting means may be operable based on an operation signal from the operating means for operating the eye refractive power measurement unit mounted on the mounting means. In this case, for example, the communication unit enables communication between at least one of the members in the projection optical system and the second relay unit, and generates an operation signal from the operation unit operating the eye refractive power measurement unit mounted on the mounting unit. Based on this, at least one of the members in the projection optical system may be operable.

  For example, the relay unit mounting means may be provided at least either inside or outside of the main body. In this case, for example, the relay unit mounting unit may be provided inside the housing. Further, in this case, for example, the relay unit mounting unit may be provided outside the housing. The relay part attachment means may be configured such that a part of the relay part attachment means is provided inside or outside the housing.

  For example, the second relay unit may be connected to an eye refractive power measurement unit attached to the attachment means and an operation means for operating the eye refractive power measurement unit attached to the attachment means. In this case, for example, the second relay unit may be connected to the eye refractive power measurement unit mounted on the mounting unit using at least one of wireless and wired configurations. Also, in this case, for example, the second relay unit may be connected using at least one of the configuration of the operation means for operating the eye refractive power measurement unit attached to the attachment means, wireless and wired. .

  For example, the second relay unit may have a configuration that can relay such that the eye refractive power measurement unit can be operated by the operation signal from the operation unit that operates the eye refractive power measurement unit. For example, the second relay unit is configured to convert the operation signal from the operation means into an operation signal for driving the eye refractive power measurement unit so that the eye refractive power measurement unit can be operated by the operation signal from the operation means. It may be That is, for example, the second relay unit is an operation signal such that the mounted eye refractive power measurement unit can drive the operation signal from the operating means according to various eye refractive power measurement units mounted to the mounting means. May be converted to Of course, for example, the second relay unit may be configured to only relay the operation signal.

  For example, the communication unit enables communication between at least one of the members in the projection optical system and the second relay unit, and based on an operation signal by an operation unit that operates the eye refractive power measurement unit attached to the attachment unit. At least one of the members in the projection optical system may be operable. For example, the communication unit connects the operation unit for operating the eye refractive power measurement unit mounted on at least one of the member and the mounting unit in the projection optical system to the second relay unit by at least one of wireless and wired. The configuration may be

  Also, for example, the second relay unit may be configured to be able to relay at least one of the members in the projection optical system so as to be operable by an operation signal from an operation means for operating the eye refractive power measurement unit. For example, at least one of the members in the projection optical system drives the operation signal from the operation unit such that the second relay unit can operate at least one of the members in the projection optical system by the operation signal from the operation unit. It may be configured to be converted into an operation signal to be processed.

  As described above, for example, the relay unit mounting unit includes the relay unit mounting unit for mounting the second relay unit relaying the operation signal of the operating unit for operating the eye refractive power measurement unit mounted on the mounting unit; An eye refracting power measurement unit attached to the attaching means and an operating means for operating the eye refracting power measurement unit attached to the attaching means are connected to the attached second relay unit, thereby attaching the attaching part to the attaching means The eye refractive power measurement unit mounted on the mounting means may be operable based on an operation signal from the operating means for operating the eye refractive power measurement unit. In this case, for example, the communication unit enables communication between at least one of the members in the projection optical system and the second relay unit, and generates an operation signal from the operation unit operating the eye refractive power measurement unit mounted on the mounting unit. Based on the operation, at least one of the members in the projection optical system may be operable.

  Thus, for example, even in the case where various eye refractive power measurement units are mounted, communication corresponding to the mounted eye refractive power measurement unit can be performed, so the eye refractive power measurement unit is appropriately operated. be able to. That is, for example, communication may not be favorably performed between the operation means and the eye refracting power measurement unit, and the eye refracting power measurement unit may not be favorably driven. By attaching a relay unit corresponding to the eye refracting power measurement unit to the visual target presenting apparatus, communication between the operation means and the eye refracting power measurement unit is improved and the eye refracting power measurement unit is driven favorably. Is possible.

  Also, for example, the eye refracting power measurement unit is attached to the visual target presenting device, and the relay unit corresponding to the eye refractive power measuring unit attached to the visual target presenting device is attached to the visual target presenting device. By communicating the eye refracting power measurement unit with the operation means, it is possible to easily operate the eye refracting power measurement unit.

  Of course, the visual target presenting apparatus may be configured to use the first relay unit and the second relay unit described above. In this case, for example, the first relay unit and the second relay unit may be configured to be communicable. As one example, for example, at least one of the members in the projection optical system is communicably connected to the first relay unit included in the visual target presenting apparatus, and attached to an external second relay unit mounted to the visual target presenting unit The eye refracting power measurement unit attached to the means and the operation means for operating the eye refracting power measurement unit attached to the attaching means may be connected. At this time, for example, the first relay unit and the second relay unit may be communicably connected. In the case of such a configuration, for example, when driving at least one of the members in the projection optical system, the operation signal from the operation means for operating the eye refractive power measurement unit is transmitted from the second relay unit to the first relay unit. It may be transmitted and transmitted to at least one of the members in the projection optical system via the first relay unit. Also, for example, when driving the eye refractive power measurement unit, for example, an operation signal from the operating means for operating the eye refractive power measurement unit is transmitted to the eyebrow force measurement unit via the second relay unit. You may

<Mounting means>
For example, the attachment means can be provided at any position. For example, the mounting means may be provided in the holding means that integrally connects the housing and the eye refractive power measurement unit. Also, for example, the mounting means may be provided on the housing. Of course, the mounting means may be provided at a position different from the above.

  For example, when the mounting means is provided in the holding means, the visual target presenting device may be provided with the holding means which integrally connects the housing and the eye refractive power measuring unit and holds the eye refractive power measuring unit. . For example, the attaching means may attach the eye refractive power measurement unit integrally to the main body (the target presenting device) by enabling the eye refractive power measuring unit to be attached to the holding means.

  For example, the holding means may integrally connect the eye refractive power measurement unit to the upper surface of the housing. Of course, the holding means may be configured to integrally connect the housing and the eye refractive power measurement unit at a position different from the above.

  For example, when the mounting means is provided in the housing, the visual target presenting device may be provided with mounting means for mounting the holding means to which the eye refractive power measurement unit is connected to the housing. For example, the attaching unit may attach the holding unit to the housing so that the eye refractive power measurement unit can be integrally attached to the main body (the target presenting device).

  For example, the mounting unit may have a configuration in which the eye refractive power measurement unit can be integrally mounted on the target presenting apparatus. For example, the mounting unit may be configured to be fitted with at least one of the eye refractive power measurement unit and the holding unit to which the eye refractive power measurement unit is connected to the visual target presenting device. In this case, for example, the mounting unit is fixed by the fixing mechanism after at least one of the eye refractive power measurement unit and the holding unit to which the eye refractive power measurement unit is connected is fitted to the target presenting device. It may be. For example, as a fixing mechanism, at least one of a screw (for example, a screw 305), a magnet, a clamp pin, and the like may be used. Of course, the fixing mechanism is not limited to the above configuration, and various fixing mechanisms may be used. The mounting means is not limited to the above-described configuration, and at least one of the eye refractive power measurement unit and the holding means connected to the eye refractive power measurement unit can be integrally mounted on the visual target presenting apparatus. If it is

<Adjustment means>
For example, the visual target presentation device may be provided with an adjustment means (for example, the moving unit 6). For example, the adjustment means may position the optometry window of the eye refractive power measurement unit mounted on the mounting means in order to make the target luminous flux emitted from the target presenting unit visible through the inspection window of the eye refractive power measurement unit. May be changed in the vertical direction.

  For example, in the optotype presenting apparatus, the optometry window of the eye refractive power measuring unit mounted on the mounting means in order to make the optotype light flux emitted from the optotype presenting unit visible through the inspection window of the eye refractive power measuring unit. An adjustment unit may be provided to change the position of the lens in the vertical direction. Thus, when various eye refractive power measurement units are mounted on the visual target presentation device, the position of the optometry window is vertically shifted from the position of the reference for testing according to the type of the eye refractive power measurement unit. Even in this case, by adjusting the position of the optometry window, it becomes possible to locate the optometry window at the position of the reference for testing, and the visual mark luminous flux is viewed through the inspection window of the eye power measurement unit It is possible to By this, even in the case where the eye refractive power measurement units having different positions of the optometry window are attached to the visual target presenting apparatus to perform the subjective examination, the subjective examination can be performed favorably.

  For example, as the adjustment means, it is sufficient that the position of the optometry window of the eye refractive power measurement unit can be changed in the vertical direction. For example, the adjustment means can automatically change the position of the optometry window of the eye refractive power measurement unit in the vertical direction, and can visually recognize the target luminous flux emitted from the target presenting unit through the inspection window of the eye refractive power measurement unit The configuration may be Also, for example, the adjustment means manually changes the position of the optometry window of the eye refractive power measurement unit in the vertical direction, and visually recognizes the visual standard luminous flux emitted from the visual target presenting unit through the inspection window of the eye refractive power measurement unit The configuration may be made possible. Also, for example, the adjustment means may be configured to be able to adjust the height in the vertical direction when the eye refractive power measurement unit is attached to the attachment means. Of course, the adjustment means is not limited to the above configuration, and any configuration may be used as long as the position of the optometry window of the eye refractive power measurement unit can be changed in the vertical direction.

  For example, in the case where the adjustment means automatically changes the position of the optometry window of the eye refractive power measurement unit in the vertical direction, the adjustment means detects the position of the optometry window and views from the visual target presentation unit The position of the optometry window may be adjusted to a position where the target luminous flux can be viewed through the inspection window of the eye refractive power measurement unit. Also, for example, in the case of a configuration in which the position of the optometry window of the eye refractive power measurement unit is automatically changed in the vertical direction, the eye refractive power measurement unit information of the eye refractive power measurement unit mounted on the mounting means is acquired and acquired The position of the optometry window may be changed in the vertical direction based on the eye refractive power measurement unit information. For example, the eye refractive power measurement unit information may be design information indicating the position of the optometry window of the eye refractive power measurement unit. For example, the examiner may input the eye refractive power measurement unit information, and when the eye refractive power measurement unit is mounted on the mounting unit, the configuration to obtain the eye refractive power measurement unit information by the mounting unit It may be

  Also, for example, when the adjusting means manually changes the position of the optometry window of the eye refractive power measurement unit in the vertical direction, an adjustment mark indicating a reference position for moving the visual mark luminous flux to a position visible through the inspection window (For example, the adjustment mark 270) may be provided in the visual target presenting apparatus. In this case, for example, the target presenting apparatus adjusts the reference position for moving the position of the optometry window of the eye refractive power measurement unit mounted on the mounting means to a position where the target luminous flux can be viewed through the inspection window. A mark may be provided. For example, by adjusting the vertical position of the eye refractive power measurement unit mounted on the mounting means by the adjusting means based on the adjustment mark, the visual mark luminous flux can be made visible through the inspection window. Good.

  For example, the adjustment mark may be a mark that aligns a specific part of the eye refractive power measurement unit. In this case, for example, the adjustment mark may be an adjustment mark for aligning the optometry window of the eye refractive power measurement unit. In this case, for example, the adjustment mark may be an adjustment mark for aligning the lower end of the eye refractive power measurement unit. Of course, for example, the adjustment mark is not limited to the configuration for aligning the portion in the eye refractive power measurement unit. For example, the adjustment mark may be an adjustment mark indicating a reference position for aligning a specific part of the eye refractive power measurement unit. For example, the adjustment mark may be used as an adjustment mark for aligning the eye to be inspected in a state in which the eye refractive power measurement unit is retracted from the examination position.

  As described above, for example, an adjustment mark indicating a reference position for moving the position of the optometry window of the eye refractive power measurement unit mounted on the mounting means to a position that makes the visual light flux visible through the inspection window The visual mark luminous flux may be made visible through the inspection window by adjusting the vertical position of the eye refractive power measurement unit mounted on the mounting unit by the adjustment unit based on the adjustment mark. By this, it is possible to easily adjust the position of the optometry window to a position that makes the visual mark luminous flux visible through the inspection window only by adjusting the vertical position of the eye refractive power measurement unit with the adjustment mark as the target. .

  For example, as a drive mechanism for changing the position of the optometry window of the eye refractive power measurement unit in the vertical direction, a mechanism for moving the eye refractive power measurement unit manually may be used. Further, as a configuration for changing the position of the optometry window of the eye refractive power measurement unit in the vertical direction, a mechanism for automatically moving the eye refractive power measurement unit may be used. In this case, for example, the visual target presentation device may include moving means (for example, moving unit 6). For example, the moving means has drive means (for example, the drive unit 30) for moving the position of the eye refractive power measurement unit, and the eye refractive power measurement unit can be vertically moved by driving the drive means. It may be a configuration.

<Example>
Hereinafter, the configuration of the visual target presenting apparatus in the present embodiment will be described. For example, FIG. 1 is a perspective view showing the visual target presenting device 9 from the front side. For example, FIG. 2 is a perspective view showing the visual target presenting device 9 from the back side. In the present embodiment, for example, various eye refractive power measurement units can be attached to the visual target presenting device 9. For example, by attaching the eye refractive power measurement unit 50 to the visual target presentation device 9, the visual observation device 1 can be used. For example, FIG. 3 is a perspective view showing the subjective optometry apparatus 1 according to the present embodiment from the front side. In the present embodiment, the side on which the presentation window 3 described later is located will be described as the front of the visual target presenting device 9, and the side on which the observation window 41 described later is positioned will be the rear surface of the visual target presenting optometry device 1.

  For example, the visual target presentation device 1 includes a housing 2, a presentation window 3, a holding unit 4, an operation unit 8, a projection optical system 10, an observation unit 40, a mounting unit 90, a communication unit 110, and the like. For example, the projection optical system 10 has a target presenting unit, and projects the target luminous flux emitted from the target presenting unit toward the eye E. For example, in the present embodiment, a display (for example, the display 11) is used as the visual mark presenting unit (the details will be described later).

  For example, in the present embodiment, the subject faces the front of the housing 2. For example, the housing 2 houses the projection optical system 10 therein. For example, the presentation window 3 is used to present a test target to the subject's eye (hereinafter referred to as the subject's eye). For example, the presentation window 3 transmits a target luminous flux in the projection optical system 10. For this reason, the target luminous flux through the presentation window 3 is projected onto the subject's eye. For example, the presentation window 3 is closed by a transparent panel in order to prevent the intrusion of dust and the like. For example, as a transparent panel, transparent members, such as an acrylic resin and a glass plate, can be used.

  For example, in the present embodiment, a mounting unit 90 is provided which can be mounted integrally on the main body of the visual target presenting apparatus 1 with an eye refractive power measurement unit for changing the optical characteristics of the visual target light flux emitted from the display 11. For example, the mounting unit 90 can mount various eye refractive power measurement units (for example, the eye refractive power measurement unit 50, the eye refractive power measurement unit 100). For example, the mounting unit 90 is covered by an appearance cover.

  For example, the examiner mounts the desired eye refractive power measurement unit on the visual target presentation device 9, and forms the subjective optical optometer 1 in which the optical refractive power measurement unit and the visual target presentation device 9 are integrally connected. can do. Also, for example, an operation unit for operating the eye refractive power measurement unit can be connected to the eye refractive power measurement unit. For example, the operation unit may be connected to the visual target presenting device 9. Also, for example, the operation unit may not be connected to the visual target presenting device 9, and may be directly connected to the eye refractive power measurement unit.

  It will be described in more detail. In the present embodiment, for example, in the case of making the eye refractive power measurement unit in the visual target presenting device 9, the eye refractive power measuring unit and the operation unit for operating the eye refractive power measurement unit are connected to the visual target presenting device 1. In the present embodiment, the eye refractive power measurement which is the second eye refractive power measurement unit different from the eye refractive power measurement unit 50 which is the first eye refractive power measurement unit or the first eye refractive power measurement unit A configuration in which the subjective type optometry apparatus 1 can be formed by attaching any of the units 100 to the visual target presenting device 9 will be described as an example. Of course, the eye refractive power measurement unit is not limited to the eye refractive power measurement unit 50 and the eye refractive power measurement unit 100. The technology of the present disclosure can be applied to other eye refractive power measurement units. For example, the examiner selects a desired eye refractive power measurement unit from among various eye refractive power measurement units (in the present embodiment, the eye refractive power measurement unit 50 or the eye refractive power measurement unit 100). The marker display device 9 is attached.

  For example, when the eye refractive power measurement unit 50 is attached to the visual target presenting apparatus 9, the eye refractive power measurement unit 50 is inserted into the optical axis measurement unit 50 by inserting the insertion unit 300 in the eye refractive power measurement unit 50. It is integrally connected to the presentation device 9. Further, for example, when the eye refractive power measurement unit 50 is attached to the visual target presenting device 9, the eye refractive power measurement unit 50 and the operation unit (controller) 81 (dotted line frame D1 in FIG. 1) are connected. For example, the controller 81 is connected to the relay unit 200 via the connection unit 81a. For example, the relay unit 200 is attached to the base 230. For example, the base 230 is provided with a screw hole 231 for mounting the base 230 on the relay unit mounting unit 111 (see FIG. 3). For example, the screw holes 231 are provided at four corners of the base 230. Of course, the arrangement position and the number of screw holes 231 can be arbitrarily selected.

  For example, the relay unit 200 is used to relay so that the eye refractive power measurement unit 50 can be operated by an operation signal from the controller 81 operating the eye refractive power measurement unit 50. For example, the relay unit 200 converts the operation signal from the controller 81 into an operation signal for driving the eye refractive power measurement unit 50 so that the eye refractive power measurement unit 50 can be operated by the operation signal from the controller 81. It may be a configuration. That is, for example, the relay unit 200 operates the operation signal from the operation unit according to various eye refractive power measurement units attached to the attachment unit 90 so that the attached eye refractive power measurement unit can drive. May be converted to Of course, for example, the relay unit 200 may be configured to only relay the operation signal. In the present embodiment, the relay unit 200 converts the operation signal from the controller 81 into an operation signal for driving the eye refractive power measurement unit 50. For example, by providing the relay unit, even if the type of the eye refractive power measurement unit is different, it can be converted to the operation signal according to the eye refractive power measurement unit, so that the eye refractive power measurement unit It is possible to operate the

  For example, in the relay unit 200, a connection unit 200a and a connection unit 200b are provided. For example, the connection unit 200 a is used to connect to the relay unit 200 and at least one member of the projection optical system 10 disposed inside the housing 2. In the present embodiment, for example, the connection unit 200 a is used to connect the relay unit 200 and the display 11. For example, the display 11 is connected to a first control unit 80 (see FIG. 9) disposed inside the housing 2. For example, the connection unit 113 b is provided at the tip of a cable connected to the first control unit (hereinafter, referred to as a control unit) 80. For example, the connection unit 200a is connected to the connection unit 113b (see FIG. 3). Thus, for example, the relay unit 200 is connected to the display 11 via the connection unit 200 a, the connection unit 113 b, and the control unit 80.

  For example, the connection unit 200 b is used to connect to the eye refractive power measurement unit 50. In the present embodiment, for example, the connection unit 200b is connected to the connection unit 112b (see FIG. 3). For example, when the eye refractive power measurement unit 50 is connected to the connection portion 112a, the eye refractive power measurement unit 50 is connected to the connection portion 112b via the connection portion 112a. That is, for example, the relay unit 200 is connected to the eye refractive power measurement unit 50 via the connection unit 200 b, the connection unit 112 b, and the connection unit 112 a.

  For example, when the eye refractive power measurement unit 100 is attached to the visual target presenting apparatus 9, the eye refractive power measurement unit 100 is an optical target by inserting the insertion portion 310 in the eye refractive power measurement unit 100 into the mounting unit 90. It is integrally connected to the presentation device 9. Further, for example, when the eye refractive power measurement unit 100 is attached to the visual target presenting device 9, the eye refractive power measurement unit 100 and the operation unit (controller) 140 (dotted line frame D2 in FIG. 1) are connected. For example, the controller 140 is connected to the relay unit 210 via the connection unit 140a. For example, the relay unit 210 is attached to the base 240. For example, the base 240 is provided with a screw hole 241 for mounting the base 240 on the relay unit mounting unit 111 (see FIG. 3). For example, screw holes 241 are provided at four corners of the base 240. Of course, the arrangement position and the number of screw holes 241 can be arbitrarily selected.

  For example, the relay unit 210 is used to relay the eye refractive power measurement unit 100 so that the eye refractive power measurement unit 100 can be operated by an operation signal from the controller 140 that operates the eye refractive power measurement unit 100. For example, the relay unit 210 converts an operation signal from the controller 140 into an operation signal for driving the eye refractive power measurement unit 100 so that the eye refractive power measurement unit 100 can be operated by the operation signal from the controller 140. It may be a configuration. That is, for example, the relay unit 210 can operate the operation signal from the operation unit according to various eye refractive power measurement units attached to the attachment unit 90 so that the attached eye refractive power measurement unit can drive. May be converted to Of course, for example, the relay unit 210 may be configured to only relay the operation signal. In the present embodiment, the relay unit 210 converts the operation signal from the controller 140 into an operation signal for driving the eye refractive power measurement unit 100.

  For example, in the relay unit 210, a connection unit 210a and a connection unit 210b are provided. For example, the connection unit 210 a is used to connect to at least one of the relay unit 210 and at least one member of the projection optical system 10 disposed inside the housing 2. In the present embodiment, for example, the connection unit 210 a is used to connect the relay unit 210 and the display 11. For example, the display 11 is connected to a first control unit 80 (see FIG. 9) disposed inside the housing 2. For example, the connection unit 113 b is provided at the tip of a cable connected to the first control unit (hereinafter, referred to as a control unit) 80. For example, the connection unit 210a is connected to the connection unit 113b (see FIG. 3). Thus, for example, the relay unit 210 is connected to the display 11 via the connection unit 210a, the connection unit 113b, and the control unit 80.

  For example, the connection unit 210 b is used to connect to the eye refractive power measurement unit 100. In the present embodiment, for example, the connection unit 210b is connected to the connection unit 112b (see FIG. 3). For example, when the eye refractive power measurement unit 100 is connected to the connection unit 112 a, the eye refractive power measurement unit 100 is connected to the connection unit 112 b via the connection unit 112 a. That is, for example, the relay unit 210 is connected to the eye refractive power measurement unit 100 via the connection unit 210b, the connection unit 112b, and the connection unit 112a.

  In the following description, a case where the eye refractive power measurement unit 50 and the controller 81 for operating the eye refractive power measurement unit 50 are attached to and connected to the visual target presenting device 9 will be described as an example. For example, while the eye refractive power measurement unit 50 is attached to the visual target presenting device 9 via the attachment unit 90, the controller (operation unit) 81 for operating the eye refractive power measurement unit 50 communicates with the eye refractive power measurement unit 50 Connectable.

  In the present embodiment, for example, the mounting unit 90 has a configuration that enables the eye refractive power measurement unit 50 to be integrally mounted to the main body by enabling the eye refractive power measurement unit 50 to be mounted to the holding unit 4. . That is, by inserting the insertion portion 300 of the eye refractive power measurement unit 50 desired by the examiner into the mounting unit 90, the eye refractive power measurement unit 50 is mounted on the holding unit 4 to make the subjective optometry apparatus 1. (See, for example, FIG. 3).

  For example, the communication unit 110 can communicate with various eye refractive power measurement units and an operation unit (for example, the controller 81 operating the eye refractive power measurement unit 50 or the controller 140 operating the eye refractive power measurement unit 100). Do. In the present embodiment, for example, the communication unit 110 measures the eye refractive power attached to the mounting unit 90 based on the operation signal from the operation unit 81 that operates the eye refractive power measuring unit 50 attached to the mounting unit 90. The unit 50 is made operable. For example, the communication means may have a wireless and / or wired configuration. For example, the wireless configuration may be a wireless LAN, infrared communication, WiFi (registered trademark), Bluetooth (registered trademark), or the like. Also, for example, as a wired configuration, a configuration such as a USB cable or a LAN cable may be used.

  For example, when the eye refractive power measurement unit 50 is attached to the visual target presenting device 1, the eye refractive power measurement unit 50 is disposed between the presentation window 3 and the eye to be examined. For example, when the eye refractive power measurement unit 50 is disposed between the presentation window 3 and the eye to be examined, the eye refractive power measurement unit 50 mounted on the presentation window 3 and the visual target presentation device 1 The target luminous flux is projected through the inspection window 53 of

  For example, the holding unit 4 holds the eye refractive power measurement unit 50. For example, the eye refractive power measurement unit 50 is supported by the holding unit 4 at the retracted position or the inspection position. For example, as shown in FIG. 2, the retracted position in the present embodiment is a state in which the eye refractive power measurement unit 50 is elevated above the housing 2. Further, as shown in FIG. 10, the inspection position in the present embodiment is a state in which the eye refractive power measurement unit 50 is lowered to the front of the housing 2. Such switching between the retracted position and the inspection position is performed by moving the holding arm 35 (see FIG. 4) of the holding unit 4 up and down by the moving unit 6 (see FIG. 4) of the holding unit 4. In the present embodiment, the holding unit 4 in which the holding arm 35 and the moving unit 6 are integrally configured is provided. Of course, the holding arm 35 and the moving unit 6 may be separately provided separately.

<Communication unit>
In the present example, for example, the communication unit 110 comprises a cable 112 for communicating with various eye power measurement units. Also, for example, the communication unit 110 includes the relay unit mounting unit 111 to which the relay unit 200 (for example, in the case of mounting the eye refractive power measurement unit 100, the relay unit 210) is attached.

  For example, the cable 112 includes a connection portion 112 a connected to the eye refractive power measurement unit 50 and a connection portion 112 b connected to the relay portion 200 connected to the controller 81. For example, the connection unit 200 b of the relay unit 200 and the connection unit 112 b are connected. For example, the cable 112 passes through the inside of the housing 2. For example, the connection portion 112 a protrudes from the distal end portion of the holding unit 4 to the outside. For example, the connection unit 112 b is disposed inside the housing 2 on the back of the visual target presenting device 9. That is, the connection portion 112 a and the connection portion 112 b are connected via the inside of the holding unit 4 and the housing 2.

  For example, the connection portion 112 a is connected to the connection portion 120 of the eye refractive power measurement unit 50. For example, the connection unit 112 b is connected to the connection unit 200 b of the repeater 200 connected to the controller 81. Thus, the communication unit 110 enables the eye refractive power measurement unit 50 mounted on the mounting unit 90 to communicate with the controller 81 via the relay unit 200. That is, for example, based on the operation signal from the controller 81, the eye refractive power measurement unit 50 can be operated.

  For example, when the eye refractive power measurement unit 100 is mounted on the mounting unit 90, the eye refractive power measurement unit 100 is mounted on the mounting unit 90. In this case, for example, the connection portion 112 a is connected to the connection portion 130 of the eye refractive power measurement unit 100. For example, the connection unit 112 b is connected to the connection unit 210 b of the relay unit 210 connected to the controller 140. Thus, the communication unit 110 enables the eye refractive power measurement unit 100 mounted on the mounting unit 90 to communicate with the controller 140 via the relay unit 210. That is, for example, based on the operation signal from the controller 140, the eye refractive power measurement unit 100 can be operated.

  For example, the relay unit mounting unit 111 is provided inside the housing 2 on the back of the visual target presenting device 9. For example, an external relay unit 200 is mounted on the relay unit mounting unit 111. For example, the relay unit mounting unit 111 may have a screw hole 114. For example, the screw hole 114 is used to mount the external relay unit 200. In the present embodiment, screw holes 114 are provided at four corners of the relay unit mounting unit 111. Of course, the arrangement position and the number of screw holes 114 can be arbitrarily selected. For example, the base 230 is fixed to the relay portion mounting unit 111 by fixing screws (not shown) through the screw holes 231 of the base 230 and the screw holes 114 of the relay portion mounting unit 111 inside the housing 2. . In the present embodiment, the base 230 is fixed at four points of the relay unit mounting unit 111. For example, by fixing the base 230 to the relay portion mounting unit 111, the relay portion 200 is fixed to the relay portion mounting unit 111.

  For example, the communication unit 110 has a connection unit 113 b. For example, the connection unit 113 b is connected to at least one of the members of the projection optical system 10 disposed inside the housing 2 via the control unit 80 inside. In the present embodiment, for example, the display 11 is connected to a first control unit 80 (see FIG. 9) disposed inside the housing 2. In the present embodiment, in addition to the display 11, at least one member of the projection optical system 10 and various members of the visual target presenting device 9 are connected to the control unit 80 (see FIG. 9). For example, the connection portion 113 b is provided at the tip of a cable connected to the control unit 80. For example, the connection unit 113 b is connected to the display 11 via the control unit 80, and protrudes from the back surface of the housing 2 into the inside of the housing 2 via the inside of the housing 2. For example, the connection unit 200a of the external relay unit 200 is connected to the connection unit 113b.

  For example, the housing 2 on the back of the visual target presenting device 9 is provided with a hole 115 for passing the cable extending from the connection portion 81 a of the controller 81 from the inside to the outside of the housing 2. For example, when the relay unit 200 is fixed inside the housing 2, a cable extending from the connection portion 81 a connected to the relay unit 200 passes through the hole 115 and is disposed outside the housing 2 Connected Note that, for example, when the eye refractive power measurement unit 100 is attached to the visual target presenting device 9, a cable extending from the connection portion 140a connected to the relay portion 210 fixed inside the housing 2 passes through the hole 115 Are connected to the controller 140 disposed outside the housing 2.

<Mounting unit>
FIG. 4 is a diagram for explaining the mounting unit 90. As shown in FIG. FIG. 4A shows the mounting unit 90 provided in the holding unit 4. FIG. 4B is a view showing the insertion portion 300 provided in the eye refractive power measurement unit 50. As shown in FIG. FIG. 4C is a view showing a state in which the insertion portion 30 is inserted into the mounting unit 90 and fixed.

  As shown in FIG. 4A, for example, the mounting unit 90 is provided in the holding unit 4. The dotted line portion T2 in the right view in FIG. 4A shows an enlarged view of the portion T1 surrounded by the dotted line portion in the left view. For example, the mounting unit 90 includes a base 91 and a screw hole 92. For example, the base 91 is connected to the connecting portion 5 of the holding unit 4. For example, the base 91 is provided with a screw hole 92. For example, as screw holes 92, four screw holes are provided. For example, the screw hole 92 is used to fix the insertion portion 300 of the eye power measurement unit 50 to the base 91.

  As shown in FIG. 4B, for example, the eye refracting power measurement unit 50 is provided with an insertion portion 300. The dotted line portion T4 in the right view in FIG. 4B shows an enlarged view of the portion T3 surrounded by the dotted line portion in the left view. For example, the insertion portion 300 is provided with a joint portion 301 connected to the eye refractive power measurement unit 50 and a screw hole 302. For example, the arm 303 of the eye refractive power measurement unit 50 is connected to the joint unit 301. For example, as screw holes 302, four screw holes are provided. For example, the screw hole 302 is used to fix the joint portion 301 to the base 91. For example, after the joint portion 301 is inserted into the mounting unit 90, the joint portion 301 is fixed to the base 91 of the mounting unit 90. For example, by fixing the joint portion 301 to the base 91, the insertion portion 300 of the eye refractive power measurement unit 50 is integrally mounted to the mounting unit 90. Thus, the eye refractive power measurement unit 50 and the visual target presenting device 9 can be integrally connected.

  As shown in FIG. 4C, for example, by fixing the insertion portion 300 of the eye refractive power measurement unit 50 to the mounting unit 90, the eye refractive power measurement unit 50 and the visual target presenting device 9 are integrally connected. Be done. For example, a dotted line portion T6 in the right figure in FIG. 4C shows an enlarged view of a portion T5 surrounded by the dotted line in the left figure. For example, after the joint portion 301 is inserted into the mounting unit 90, the screw 305 is passed through the screw hole 92 of the base 91 of the mounting unit 90 and the screw hole 302 of the joint portion 301 and fixed to the connection portion 5 of the holding unit 4. Be done. Thus, the insertion portion 300 of the eye refractive power measurement unit 50 is integrally mounted on the mounting unit 90. That is, the eye refractive power measurement unit 50 and the visual target presenting device 9 are integrally connected.

<Holding unit>
The details of the holding unit 4 will be described below. For example, FIG. 5 shows a schematic view of the internal configuration when the appearance cover of the holding unit 4 is removed. In FIG. 5, the eye refractive power measurement unit 50 connected to the support arm 35 is omitted. For example, FIG. 5A shows an internal configuration of the holding unit 4 when the eye refractive power measurement unit 50 is moved to the retracted position. For example, FIG. 5 (b) shows the internal configuration of the holding unit 4 when the eye refractive power measurement unit 50 is moved to the examination position.

  For example, the holding unit 4 includes the connecting portion 5, the moving unit 6, the base 31, the holding arm 35, and the like. For example, the holding unit 4 is connected to the eye refractive power measurement unit 50 via the connection unit 5. For example, the connecting portion 5 is rotatably connected to the holding arm 35 about the rotation axis R3. For example, the holding arm 35 is rotatably attached to the base 31. For example, the base 31 is provided on the upper surface of the housing 2. For example, the base 31 is coupled to the housing 2 via the coupling portion 33. For example, the base 31 is fixed to the housing 2 via the connecting portion 33. In addition, in a present Example, although the structure which the base 31 and the connection part 33 are provided separately is mentioned as an example, and demonstrated, it is not limited to this. The base 31 and the connecting portion 33 may be integrally configured. In this case, for example, the base 31 and the housing 2 may be connected.

  For example, the moving unit 6 includes a drive unit (for example, a motor) 30, a shaft 7, a support member 85, a block 32, a block receiver 36, a support member 38, a block receiver 39, a detector 70, a light shield 71, an elongated hole 72, A limiting member 75, an elongated hole 76, a bearing 77 and the like are provided. The moving unit 6 may be configured to include at least the motor 30. For example, the motor 30 is fixed to the holding arm 35 and connected to the upper portion of the shaft 7. For example, the lower portion of the shaft 7 has a screw portion not shown and is fitted with the support member 85. That is, the support member 85 has a screw portion (not shown) at a portion through which the shaft 7 penetrates so as to engage with the shaft 7. For example, the support member 85 is attached to the base 31. For example, the support member 85 rotatably supports the shaft 7 with respect to the base 31 about the rotation axis (central axis) R1 of the support member 85. For example, the holding arm 35 is attached to the base 31 by the support member 38. For example, the support member 38 rotatably supports the holding arm 35 with respect to the base 31 about the rotation axis (central axis) R2 of the support member 38.

  For example, the block 32 is coupled to the support member 38. For example, the block 32 is rotatable relative to the base 31 about the rotation axis R2 of the support member 38 as the support member 38 rotates. For example, the block receiver 36 and the block receiver 39 are fixed to the base 31. For example, the block receiver 36 and the block receiver 39 are configured to be in contact with the block 32 at different predetermined positions. For example, when the block 32 is rotated to a predetermined position when the block 32 is rotated relative to the base 31 about the rotation axis R2 of the support member 38 as the support member 38 rotates, the block 32 is provided on the base 31 Contact with the received block receiver 36 or block receiver 39 stops the rotation of the block 32. For example, in the present embodiment, the block receiver 36 contacts the block receiver 36 and the block 32 when the eye refractive power measurement unit 50 reaches the inspection position from the retracted position, and the rotation of the block 32 is stopped. , Block receiver 36 is arranged. Also, for example, in the present embodiment, when the eye refractive power measurement unit 50 reaches the retracted position from the inspection position, the block receiver 39 contacts the block receiver 39 and the block 32, and the rotation of the block 32 is stopped. At the position, a block receiver 39 is arranged.

  For example, from the state where the eye refractive power measurement unit 50 as shown in FIG. 5A is placed at the retracted position, the eye refractive power measurement unit 50 as shown in FIG. 5B is placed at the examination position The operation to be in the state will be described. For example, when the motor 30 is driven, the shaft 7 is rotated. For example, when the motor 30 rotates forward, the shaft 7 rotates. The rotation of the shaft 7 causes the threaded portion of the shaft 7 to rotate and move relative to the support member 85 engaged with the threaded portion of the shaft 7. That is, the shaft 7 moves in the axial direction of the shaft 7 with respect to the support member 85. For example, the shaft 7 moves relative to the support member 85, and the protruding portion of the shaft 7 from the support member 85 is increased (the shaft 7 is elongated). For example, in conjunction with the movement in which the protruding portion of the shaft 7 increases, the support member 85 rotates in the arrow A direction about the rotation axis R1.

  For example, as the support member 85 rotates around the rotation axis R1, the shaft 7 also rotates around the rotation axis R1. That is, the shaft 7 moves in the axial direction of the shaft 7 with respect to the support member 85, and rotates in the arrow A direction around the rotation axis R1. For example, as the shaft 7 rotates, the motor 30 connected to the shaft 7 rotates in the direction of arrow A around the rotation axis R1. Further, for example, the holding arm 35 to which the motor 30 is fixed rotates in the direction of arrow A integrally with the rotation of the motor 30 about the rotation axis R2 of the support member 38. Thus, the connecting portion 5 connected to the holding arm 35 rotates in the arrow A direction, and the eye refractive power measurement unit 50 connected to the connecting portion 5 rotates in the arrow A direction. Also, for example, the connecting portion 5 is rotated relative to the holding arm 35 so that the eye refractive power measuring unit 5 can maintain the vertical state by the weight of the eye refractive power measuring unit 50. In the present embodiment, the vertical state includes the substantially vertical state. As a result, for example, the eye refractive power measurement unit 50 as shown in FIG. 5A is moved from the retracted position to the eye refractive power measurement unit 50 as shown in FIG. 5B. That is, the eye refractive power measurement unit 50 can be moved downward.

  Also, for example, the rotation (movement to the examination position) of the eye refractive power measurement unit 50 in the A direction is stopped by the block 32 and the block receiver 36 when the eye refractive power measurement unit 50 reaches the examination position. . For example, when the motor 30 is driven, the block 32 is rotated in the A direction about the rotation axis R2, and contacts the block receiver 36 when the eye refractive power measurement unit 50 reaches the inspection position. For example, the rotation of the block 32 is stopped by contacting the block receiver 36. For example, when the block 32 is stopped, the rotation of the support member 38 connected to the block 32 is stopped. Also, in accordance with this, the rotation of the shaft 7 and the support member 85 is also stopped. As a result, the eye refractive power measurement unit 50 is stopped at the examination position. That is, the eye refractive power measurement unit 50 is stopped at the examination position by the block 32 and the block receiver 36.

  For example, the rotation of the eye refractive power measurement unit 50 in the A direction (movement to the examination position) is stopped after the eye refractive power measurement unit 50 reaches the examination position by the block 32 and the block receiver 36. The motor 30 is continuously driven. For example, when the motor 30 is driven, the shaft 7 rotates but the block 32 and the block receiver 36 prevent the shaft 7 from moving. At this time, for example, the movement of the shaft 7 in the axial direction of the shaft 7 relative to the support member 85 is stopped, and the movement of the support member 85 with respect to the shaft 7 is started. That is, the drive by the motor 30 is switched from the movement of the shaft 7 to the movement of the support member 85. For example, when the support member 85 is moved to a predetermined position after the movement of the support member 85 is started, the driving of the motor 30 is stopped.

  Thus, the movement of the eye refractive power measurement unit 50 to the examination position is completed. For example, the switching mechanism from the movement of the shaft 7 to the movement of the support member 85 can be used as a contact suppression mechanism when the eye refractive power measurement unit 50 is in contact with another member while moving to the inspection position. .

  For example, when the eye refractive power measurement unit 50 as shown in FIG. 5B is placed at the examination position, the eye refractive power measurement unit 50 as shown in FIG. 5A is placed at the retracted position The operation to be in the state will be described. For example, as the motor 30 rotates in reverse, the shaft 7 rotates. By the rotation of the shaft 7, for example, the shaft 7 moves in the axial direction of the shaft 7 with respect to the support member 85, and the protruding portion of the shaft 7 from the support member 85 decreases (the shaft 7 becomes short). For example, in conjunction with the movement of the shaft 7 becoming short, the support member 85 rotates in the arrow B direction about the rotation axis R1. Similar to the above description, when the support member 85 rotates around the rotation axis R1, the connecting portion 5 connected to the holding arm 35 rotates around the rotation axis R2 in the arrow B direction, and is connected to the connecting portion 5 The eye refractive power measurement unit 50 is rotated in the arrow B direction. Further, for example, the connecting portion 5 is rotated relative to the holding arm 35 so that the eye refractive power measurement unit 50 can maintain the vertical state by the weight of the eye refractive power measurement unit 50. As a result, for example, the eye refractive power measurement unit 50 as shown in FIG. 5 (b) is moved from the examination position to the eye refractive power measurement unit 50 as shown in FIG. 5 (a). That is, the eye refractive power measurement unit 50 can be moved upward.

  In addition, for example, the rotation (movement to the retracted position) of the eye refractive power measurement unit 50 in the B direction is stopped by the block 32 and the block receiver 39 when the eye refractive power measurement unit 50 reaches the retracted position. . For example, when the motor 30 is driven, the block 32 is rotated in the B direction about the rotation axis R2, and contacts the block receiver 39 when the eye refractive power measurement unit 50 reaches the retracted position. For example, rotation of the block 32 is stopped by contacting the block receiver 39. For example, when the block 32 is stopped, the rotation of the support member 38 connected to the block 32 is stopped. Also, in accordance with this, the rotation of the shaft 7 and the support member 85 is also stopped. Thus, the eye refractive power measurement unit 50 is stopped at the retracted position. That is, by the block 32 and the block receiver 39, the eye refractive power measurement unit 50 is stopped at the retracted position. Thus, the movement of the eye refractive power measurement unit 50 to the retracted position is completed.

  In the present embodiment, the movement of the eye refractive power measurement unit 50 to the retracted position has been described by taking the configuration in which it is stopped by the block 32 and the block receiver 39 as an example, but the present invention is not limited thereto. For example, detection means for detecting the retracted state may be provided, and movement of the eye refractive power measurement unit 50 to the retracted position may be stopped based on the detection result. In this case, for example, while providing a shielding part in the support member 38, a detector is provided in the base 31 as an example. For example, when the eye refracting power measurement unit 50 is located at the retracted position, the movement of the eye refracting power measurement unit 50 to the retracted position is stopped when the shielding portion provided on the support member 38 is detected by the detector. You may make it

<Operation part>
The operation unit 8 will be described below. For example, the operation unit is a vertical movement switch (a movement switch of the eye refractive power measurement unit 50). Also, for example, the operation unit 8 is a vertical movement switch (a movement switch of the eye refractive power measurement unit 50). For example, by operating the operation unit 8, the eye refractive power measurement unit 50 can be moved between the examination position in front of the eye to be examined and the retracted position. For example, the operation unit 8 may be provided on the left and right side surfaces of the housing 2 respectively. In this case, for example, the two operation units 8 may be operation units for performing the same operation.

<Projection optical system>
The projection optical system 10 will be described below. For example, FIG. 6 is a view of the projection optical system 10 as viewed from the left side (the arrow direction C1 in FIG. 1). FIG. 6A shows an optical arrangement at the time of distance inspection. FIG. 6B shows an optical arrangement at the time of near vision inspection. For example, the projection optical system 10 has a target presenting unit, and projects the target luminous flux emitted from the target presenting unit toward the eye E. For example, in the present embodiment, a display (for example, the display 11) is used as the visual mark presenting unit. For example, the projection optical system 10 includes a display 11, a plane mirror 12, a concave mirror 13, a perspective switching unit 20, and the like.

  For example, on the display 11, inspection targets such as Landolt ring targets and fixation targets are displayed. For example, the display of the display 11 is controlled by the control unit 80 described later. For example, as the display, an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), a plasma display, or the like may be used.

  For example, at the time of the far vision inspection shown in FIG. 6A, the screen of the display 11 is directed to the back side of the housing 2 and the target luminous flux is emitted toward the back direction. The target luminous flux may be emitted from the display in the horizontal direction (Z direction) or may be emitted in the oblique direction (YZ direction). For example, at the time of near vision inspection shown in FIG. 6B, the screen of the display 11 is directed upward, and the visual mark luminous flux is emitted upward. The target luminous flux may be emitted from the display in the vertical direction (Y direction) or in the oblique direction (YZ direction). Thus, the target luminous flux from the display 11 is projected toward the eye E.

  For example, the flat mirror 12 reflects the visual target light flux from the display 11 and guides the light flux to the concave mirror 13. In addition, for example, the flat mirror 12 reflects the visual standard luminous flux from the display 11 and guides the luminous flux to the eye E. For example, the mirror coating is applied only to the lower part (solid line part of the flat mirror 12 in FIG. 6) and the mirror coating is not applied to the upper part (dotted part of the flat mirror 12 in FIG. 6).

  Therefore, in the present embodiment, the upper part of the flat mirror 12 is transparent. For example, the focal distance of the flat mirror 12 at the time of near vision inspection is designed such that the optical distance from the display to the eye E to be examined is 40 cm. In the present embodiment, as long as the target luminous flux can be reflected, the configuration is not limited to the configuration using a plane mirror. For example, it may be a reflective member. In this case, for example, a configuration using a prism, a beam splitter, a half mirror or the like may be used.

  For example, the concave mirror 13 reflects the target luminous flux from the display 11 toward the plane mirror 12. For example, the concave mirror 13 sets the presenting distance of the examination target displayed on the display 11 to the far vision inspection distance. For example, the focal distance of the concave mirror 13 is designed so that the optical distance from the display 11 to the eye E to be examined is 5 m. In the present embodiment, the configuration is not limited to the configuration using the concave mirror 13. For example, it may be a reflecting member capable of reflecting the target luminous flux. In this case, for example, an aspheric mirror or a free curved surface mirror may be used. Also, for example, a configuration using a lens may be used. In this case, for example, the visual target light flux is projected onto the subject's eye E from the display 11 via the lens, and the optical distance from the display 11 to the subject's eye E is designed to be 5 m by the lens. It may be a configuration.

  For example, at the time of the distance examination shown in FIG. 6A, the subject E's eye E emits light from the display 11, and the plane mirror 12, the concave mirror 13, and the plane mirror 12 pass through the optical member in this order. The light flux is projected. That is, when the target luminous flux emitted from the display 11 is incident on the plane mirror 12 through the optical axis L 1, it is reflected in the direction of the optical axis L 2 and travels to the concave mirror 13. When the target luminous flux is incident on the concave mirror 13, it is reflected in the direction of the optical axis L 3 and travels to the plane mirror 12. Further, when the target luminous flux is incident on the plane mirror 12, it is reflected in the direction of the optical axis L4 and is projected onto the subject's eye E to be examined. Further, for example, at the time of the near vision examination shown in FIG. 6B, the target luminous flux emitted from the display 11 and reflected by the flat mirror 12 is projected onto the subject's eye E of the subject. That is, the target luminous flux emitted from the display 11 is incident on the plane mirror 12 through the optical axis L3, is reflected in the direction of the optical axis L4, and is projected onto the subject's eye E of the subject. For example, in this manner, the projection optical system 10 emits a visual target luminous flux from the inside to the outside of the housing 2.

  For example, the perspective switching unit 20 changes the position of the display 11 during the distance examination and the near examination. For example, the perspective switching unit 20 includes a holding unit 21, a gear 22, a motor 23, and the like. For example, the holding unit 21 holds the display 11. For example, the gear 22 has a worm portion 24 and a wheel portion 25. For example, the worm portion 24 and the wheel portion 25 are formed by gears which mesh with each other. For example, the motor 23 is coupled to the worm unit 24, and the holding unit 21 is coupled to the wheel unit 25. For example, when the motor 23 is driven, the worm portion 24 is rotated, and accordingly, the wheel portion 25 is rotated in the arrow direction. By this, it is possible to move the display 11 integrally with the holding unit 21, and to switch the presenting position of the test target displayed on the screen of the display 11 between the distance examination and the near examination. Can. The gear 22 and the motor 23 are disposed on the side wall of the housing 2 and are disposed at positions that do not interfere with the target luminous flux directed from the display 11 to the eye E.

  In the present embodiment, the optical axis L3 and the optical axis L4 of the projection optical system 10 are described as being coaxial at the time of the distance inspection and at the time of the near inspection, by way of example. For example, in the present embodiment, as long as the target luminous flux can be guided to the eye E to be inspected, it may be configured to pass through different optical paths at the time of the far vision inspection and the near vision inspection.

<Observation unit>
The observation unit 40 will be described below. FIG. 7 is a diagram for explaining the observation unit. For example, the observation unit 40 in the present embodiment is used to observe the positional relationship between the eye refractive power measurement unit 50 and the eye to be examined E described later via the presentation window 3. For example, in the present embodiment, the observation unit 40 includes an observation window 41, a shielding unit 42, a cover 43, a detector (detection means) 45, and the like. The observation unit 40 may be configured to include at least the observation window 41.

For example, the observation window 41 is used to observe the positional relationship between the eye refractive power measurement unit 50 and the eye E from the outside of the housing 2 through the presentation window 3. For example, the observation window 41 in the present embodiment is disposed at a position where the pupil position of the eye to be examined E can be confirmed from the examiner's eye OE.
For example, when the examiner looks into the observation window 41, the plane mirror 12 is formed transparent in a region where the line of sight of the examiner passes so that the line of sight of the examiner is not blocked by the plane mirror 12. For example, the shielding unit 42 suppresses that the target luminous flux from the projection optical system 10 enters the observation window 41. For example, in the present embodiment, the shielding portion 42 is disposed at the boundary between the transparent portion and the mirror portion in the plane mirror 12.

  For example, the cover 43 is fixed to the housing 2 by a hinge 44 and can be opened and closed with respect to the observation window 41. For example, the cover 43 can be opened and closed by pushing and pulling a knob (not shown) by the examiner.

  For example, the detector 45 detects the opening and closing of the cover 43 in the observation unit 40. For example, the detector 45 is configured using an optical sensor such as a photo interrupter. That is, the detector 45 in the present embodiment has a convex portion 45a in which the light emitting element and the light receiving element are opposed, and the projecting portion 46 provided on the cover 43 is fitted in the concave portion 45b. For example, the detector 45 detects that the cover is in a closed state when the light from the light emitting element is blocked by fitting the protrusion 46 to the recess 45 b. Also, for example, when the protrusion 46 is separated from the recess 45 b and light from the light emitting element is received by the light receiving element, the detector 45 detects that the cover is in the open state.

<Eye refractive power measurement unit>
The eye refractive power measurement unit 50 will be described below. For example, the eye refractive power measurement unit 50 is in close proximity to the housing 2 (see FIG. 6). For example, in the present embodiment, the distance W (see FIG. 6) from the inspection window 53 in the eye refractive power measurement unit 50 to the presentation window 3 disposed in the housing 2 is designed to be about 135 mm. The distance W from the inspection window 53 to the presentation window 3 is not limited to this embodiment. For example, when the distance W is shorter than the head length of the examiner, the examiner can not get his head inserted between the eye refractive power measurement unit 50 and the housing 2. It becomes difficult to observe the positional relationship between the subject eye E and the subject eye E. Therefore, when the distance W is shorter than the head length of the examiner, the observation window 41 can be effectively used.

  For example, FIG. 8 is a diagram showing an eye refractive power measurement unit 50. As shown in FIG. For example, the eye refractive power measurement unit 50 includes a forehead support 51, a pair of left and right lens chamber units 52, an inspection window 53, a drive unit 54, a drive unit 55, a moving unit 56, a corneal position aiming optical system 60, and the like. For example, the forehead support 51 abuts on the forehead of the subject and is used to keep the distance between the eye E to be measured and the eye refractive power measurement unit 50 constant.

  For example, the lens chamber unit 52 switches the optical element to the inspection window 53 and arranges it. For example, a lens disc 57 is provided inside the lens chamber unit 52. The lens disc 57 has many optical elements (a spherical lens, a cylindrical lens, a dispersing prism, etc.) arranged on the same circumference. For example, the lens disc 57 is rotationally controlled by the drive unit 54 (actuator or the like). Thereby, the optical element desired by the examiner is disposed in the inspection window 53. For example, the rotation of the optical element disposed in the inspection window 53 is controlled by the drive unit 55 (motor, solenoid or the like). Thus, the optical element is disposed in the inspection window 53 at a rotational angle desired by the examiner.

  For example, the lens disc 57 is composed of one lens disc or a plurality of lens discs. For example, when a plurality of lens discs (lens disc groups) are provided, driving units corresponding to the respective lens discs are provided. For example, each lens disc of the lens disc group comprises an aperture (or lens of 0D) and a plurality of optical elements. As a type of each lens disk, a spherical lens disk having a plurality of spherical lenses having different powers, a cylindrical lens disk having a plurality of cylindrical lenses having different powers, and an auxiliary lens disk are representative. In addition, the lens disc in the present embodiment is provided with a positioning lens to which a cross hair is attached. For example, at least one of a red filter / green filter, a prism, a cross cylinder lens, a polarizing plate, a Maddox lens, and an auto cross cylinder lens is disposed on the auxiliary lens disk. In addition, please refer to Unexamined-Japanese-Patent No. 2007-68574 and Unexamined-Japanese-Patent No. 2011-72431 about the detailed structure of a lens disc.

  For example, the moving unit 56 adjusts the distance between the lens chamber units 52. For example, the distance between the left and right lens chamber units is adjusted by the drive unit 58 having a slide mechanism. Thus, the distance between the inspection windows 53 can be changed in accordance with the PD of the eye to be examined. In addition, the moving unit 56 adjusts the convergence angle (inset angle) of the left and right lens chamber units. For example, the convergence angle of the left and right eye refractive power measurement unit is adjusted by the drive unit 59 having a convergence mechanism. For details of the configuration of the mobile unit, refer to Japanese Patent Laid-Open No. 2004-329345.

  The eye refractive power measurement unit 50 is not limited to the above configuration. For example, the eye refractive power measurement unit 50 may be configured to change the optical characteristics (for example, at least one of spherical power, cylindrical power, cylindrical axis, polarization characteristics, aberration amount, and the like) of the target luminous flux. For example, as a configuration for changing the optical characteristics of the target light beam, the configuration may be such that the optical element is controlled. For example, a configuration using a wavefront modulation element may be used.

<Control system>
For example, FIG. 9 is a schematic configuration diagram of a control system in the visual target presenting device 9, the eye refractive power measurement unit 50 connected to the visual target presenting device 9, and the controller 81 connected to the visual target presenting device 9. For example, the visual target presenting device 9 includes a control unit 80. FIG. 9 shows the case where the eye refractive power measurement unit 50 is attached to the visual target presenting device 9 and connected via the relay unit 200. Further, for example, FIG. 9 shows a case where the controller 81 is connected to the visual target presenting device 9 via the relay unit 200.

  For example, the control unit 80 is connected to the operation unit 8, the display 11, the detector 45, the non-volatile memory 82, and the like. Further, for example, the control unit 80 is connected to the motor 30 included in the moving unit 6, the motor 23 included in the perspective switching unit 20, and the like.

  For example, the control unit 80 includes a CPU (processor), a RAM, a ROM, and the like. For example, the CPU is responsible for control of each member in the visual target presentation device 9. For example, the RAM temporarily stores various types of information. For example, in the ROM, various programs for controlling the operation of the visual target presenting device 9, inspection visual target data, and the like are stored. The control unit 80 may be configured by a plurality of control units (that is, a plurality of processors).

In the present embodiment, for example, the visual target presenting device 9 is connected to the controller 81 via the relay unit 200. More specifically, for example, the control unit 80 of the visual target presenting device 9 is connected to the second control unit (hereinafter referred to as a control unit) 500 of the controller 81 via the relay unit 200.
Note that, for example, the control unit 500 includes a CPU (processor), a RAM, a ROM, and the like. For example, the CPU is in charge of control in the controller 81. For example, the RAM temporarily stores various types of information. For example, various programs and the like for controlling the operation of the controller 1 are stored in the ROM. Control part 500 may be constituted by a plurality of control parts (that is, a plurality of processors).

  Further, in the present embodiment, for example, the visual target presenting device 9 is connected to the eye refractive power measurement unit 50 via the relay unit 200. More specifically, for example, drive units (drive units 54, 55, 58, 59) included in each member of the eye refractive power measurement unit 50 are connected to the control unit 80 of the visual target presenting apparatus 9 via the relay unit 200. Ru. That is, in the present embodiment, the control unit 80 of the visual target presenting device 9 doubles as a relay unit.

  For example, the controller 81 is used when switching the display of the display 11 in the projection optical system 10, the arrangement of optical elements in the eye refractive power measurement unit 50, and the like. For example, in response to the operation of the controller 81, the control unit 500 outputs an operation signal according to the operation. For example, the operation signal output from the control unit 500 is input to the control unit 80 via the connection unit 81 a and the relay unit 200. Further, for example, the control unit 80 drives the drive units (drive units 54, 55, 58, 59) provided in each member of the eye refractive power measurement unit 50 based on the input operation signal. Also, for example, the control unit 80 controls the display of the display 11 in the projection optical system 10 based on the input operation signal. Further, for example, the control unit 80 drives the motor 23 provided in the perspective switching unit 20 in the projection optical system 10 based on the input operation signal. In the present embodiment, the operation signal from the controller 81 may be input to the control unit 80 through wireless communication such as infrared light.

  For example, the non-volatile memory 82 is a non-transitory storage medium capable of retaining stored contents even when the supply of power is shut off. For example, a hard disk drive, a flash ROM, a USB memory or the like can be used as the non-volatile memory 82. For example, in the non-volatile memory 82, a large number of test visual target data such as Landolt ring visual targets (for example, visual target data of visual acuity value 0.1 to 2.0) are stored.

  For example, in the present embodiment, the control unit 80 switches the measurement mode of the subjective optometry apparatus 1 (the target presenting device 9) based on the detection result of the detector 45. For example, in the present embodiment, the control unit 80 automatically switches the measurement mode in conjunction with the opening and closing of the cover 43. For example, when the detector 45 detects that the cover 43 is opened, the control unit 80 sets the measurement mode to the second mode for confirming the pupil position of the subject. Also, for example, when the detector 45 detects that the cover 43 is closed, the control unit 80 sets the measurement mode to the first mode for conducting a subjective examination of the subject. In the present embodiment, switching of the measurement mode is automatically performed in conjunction with the opening and closing of the cover 43, but the present invention is not limited to this. For example, the switching of the measurement mode may be performed manually by the examiner. In this case, a signal for switching the measurement mode may be input to the control unit 80 using the controller 81.

<Operation>
Hereinafter, an operation of connecting the eye refractive power measurement unit 50 and the controller 81 to the visual target presenting apparatus 9 to form the subjective optometry apparatus 1 will be described. First, for example, the examiner mounts a desired ocular dioptric power measurement unit with respect to the visual target presenting device 9, for example. For example, the examiner mounts the eye refractive power measurement unit 50 on the visual target presentation device 9. When the eye refractive power measurement unit 50 is attached, the eye refractive power measurement unit 50 may be attached while the holding unit 4 is moved to the retracted position. Of course, the position of the holding unit 4 at the time of mounting the eye refractive power measurement unit can be set at any position.

  For example, the examiner inserts the insertion portion 300 of the eye refractive power measurement unit 50 into the mounting unit 90. For example, the examiner passes the screw 305 through the screw hole 92 of the base 91 of the mounting unit 90 and the screw hole 302 of the joint portion 301 of the insertion portion 300 to connect the eye refractive power measurement unit 50 to the connecting portion 5 of the holding unit 4. Fix to Thus, the eye refractive power measurement unit 50 and the visual target presenting device 9 are integrally connected. Also, for example, the examiner connects the connection portion 120 of the eye refractive power measurement unit 50 and the connection portion 112 a.

  Next, the examiner connects the controller 81 for operating the eye refractive power measurement unit 50 to the target presenting device 9. For example, the examiner opens the back cover of the case 2 of the visual target presenting device 9. For example, the examiner mounts the relay unit 200 on the relay unit mounting unit 111. For example, the examiner passes a screw (not shown) through the screw hole 231 of the base 230 attached to the relay unit 200 and the screw hole 114 of the relay unit mounting unit 111 and fixes the screw inside the housing 2. For example, by fixing the base 230 to the relay portion mounting unit 111, the relay portion 200 is fixed to the relay portion mounting unit 111. For example, the examiner connects the connection portion 81 a of the controller 81 to the relay portion 200 via the hole 115. For example, the examiner connects the connection unit 112 b and the connection unit 200 b of the relay unit 200. For example, the examiner connects the connection unit 113 a connected to the control unit 80 and the connection unit 200 a of the relay unit 200. The examiner closes the back cover of the case 2 of the visual target presentation device 9 when all the connections are completed.

  By performing the above-described operation, the examiner can attach the desired eye refractive power measurement unit 50 to the visual target presenting apparatus 9 to form the subjective optometry apparatus 1. Thus, for example, the visual target presenting device is a mounting means that can be integrally mounted on the main body with an eye refractive power measurement unit that changes the optical characteristics of the visual target light flux emitted from the visual target presenting portion Mounting means capable of mounting various eye refractive power measurement units, and communication means capable of communicating between various eye refractive power measurement units and operation means, the eye refractive power measurement unit mounted on the mounting means And communication means for enabling the eye refractive power measurement unit mounted on the mounting means to be operable based on an operation signal from the operating means to be operated. As a result, various eye refractive power measurement units can be attached to the visual target presentation device, and a space-saving subjective optometer with any eye refractive power measurement unit attached can be obtained. By this, for example, space saving of the subjective examination can be efficiently provided according to the needs of the examiner. Also, for example, performing a subjective examination in a space-saving manner using an eye refractive power measurement unit desired by the examiner (for example, regardless of the eye refractive power measurement unit of another company and the eye refractive power measurement unit of the company). it can.

  Also, for example, the communication means can communicate at least one of the members in the projection optical system with the operation means for operating the eye refractive power measurement unit mounted on the mounting means, and the eye refractive power mounted on the mounting means At least one of the members in the projection optical system may be operable based on an operation signal from an operation unit that operates the measurement unit. This makes it possible to operate the projection optical system and the eye refracting power measurement unit by one operation means, so that the subjective inspection can be performed with less space. That is, the examiner can obtain a more space saving conscious optometer.

  Also, for example, the visual target presenting apparatus includes relay unit mounting means for mounting a second relay portion for relaying an operation signal of the operating means for operating the eye refractive power measurement unit mounted on the mounting means, and the relay portion The second relay unit attached to the attaching means is connected by connecting the operating unit for operating the eye refractive power measuring unit attached to the attaching means and the eye refractive power measuring unit attached to the attaching means The eye refractive power measurement unit mounted on the mounting means may be operable based on an operation signal from the operating means for operating the eye refractive power measurement unit mounted on the means. In this case, for example, the communication unit enables communication between at least one of the members in the projection optical system and the second relay unit, and generates an operation signal from the operation unit operating the eye refractive power measurement unit mounted on the mounting unit. Based on the operation, at least one of the members in the projection optical system may be operable.

  Thus, for example, even in the case where various eye refractive power measurement units are mounted, communication corresponding to the mounted eye refractive power measurement unit can be performed, so the eye refractive power measurement unit is appropriately operated. be able to. That is, for example, communication may not be favorably performed between the operation means and the eye refracting power measurement unit, and the eye refracting power measurement unit may not be favorably driven. By attaching a relay unit corresponding to the eye refracting power measurement unit to the visual target presenting apparatus, communication between the operation means and the eye refracting power measurement unit is improved and the eye refracting power measurement unit is driven favorably. Is possible.

  Also, for example, the eye refracting power measurement unit is attached to the visual target presenting device, and the relay unit corresponding to the eye refractive power measuring unit attached to the visual target presenting device is attached to the visual target presenting device. By communicating the eye refracting power measurement unit with the operation means, it is possible to easily operate the eye refracting power measurement unit.

  Hereinafter, the control operation of the subjective optometry apparatus 1 formed by mounting the eye refractive power measurement unit 50 will be described. For example, the examiner operates the operation unit 8 to lower the eye refractive power measurement unit 50 to the inspection position shown in FIG. For example, when the operation unit 8 is operated, the control unit 80 drives the motor 30. For example, when the motor 30 is driven, the eye refractive power measurement unit 50 is lowered to the examination position. For example, when the eye refractive power measurement unit 50 is moved to the examination position by driving the motor 30, the block 32 and the block receiver 36 contact each other, and the lowering of the eye refractive power measurement unit 50 is stopped. In addition, the movement of the support member 85 is started with the stop of the eye refractive power measurement unit 50, and when the support member 85 is moved to the predetermined position, the driving of the motor 30 is stopped. As a result, as shown in FIG. 10, the movement of the eye refractive power measurement unit 50 to the inspection position is completed, and the subjective inspection using the eye refractive power measurement unit 50 becomes possible.

  As described above, the eye refractive power measurement unit 50 is moved to the examination position. Next, for example, the examiner measures the PD of the subject in advance before performing the subjective examination, and the examiner operates the controller 81 in the subjective eye examination apparatus 1 to measure the PD. Enter Thus, for example, the control unit 80 drives the drive unit 58 to adjust the distance between the left and right lens chamber units 52 and change the distance between the inspection windows 53 in accordance with the PD of the eye to be examined. For example, the control unit 80 adjusts the distance between the optical axes of the left and right inspection windows 53 in the horizontal direction (X direction) to be the same as PD. In the present embodiment, the same includes substantially the same.

  Next, the examiner instructs the subject to look through the examination window 53. Here, for example, the examiner opens the cover 43 in order to confirm the interpupillary distance PD of the eye E to be examined. At this time, the detector 45 detects that the cover 43 is opened, and the control unit 80 switches the measurement mode to the second mode for confirming the pupil position of the subject.

  For example, the examiner operates the controller 81 to adjust the distance between the left and right lens chamber units 52 as necessary. Next, the examiner aligns the eye E with the eye refractive power measurement unit 50 using the corneal position aiming optical system 60 in order to confirm the corneal apex position of the eye E.

  For example, when the alignment of the eye E with respect to the eye refractive power measurement unit 50 is completed, the examiner closes the cover 43 and starts the subjective examination. At this time, the control unit 80 detects that the cover 43 is closed by the detector 45, and switches the measurement mode to the first mode for performing a subjective examination of the subject.

  For example, when performing a far vision inspection (see FIG. 6A), the control unit 80 turns on the display 11. For example, the indicator light flux is emitted from the display 11 held by the holding unit 21 toward the plane mirror 12. The target luminous flux is reflected by the plane mirror 12 and the concave mirror 13 respectively, and guided again to the eye E via the plane mirror 12. In addition, for example, when the near vision inspection is performed (see FIG. 6B), the display 11 moves together with the holding unit 21 and is disposed at a short distance (for example, a distance of 40 cm) from the eye E. A visual target luminous flux is emitted from the display 11 toward the plane mirror 12. The target luminous flux is reflected by the flat mirror 12 and guided to the eye E to be examined.

  For example, at the time of the long-distance examination and the near-vision examination, the examiner operates the controller 81 to display the examination target on the screen of the display 11. In response to the input signal from the controller 81, the control unit 80 calls the corresponding examination index data from the non-volatile memory 82, and controls the display of the display 11. The examination target displayed on the display 11 is presented to the subject's eye E of the subject via the examination window 53 of the eye refractive power measurement unit 50 and the presentation window 3.

  For example, while switching examination targets, the examiner asks the subject how the examination targets look. For example, when the subject's answer is a correct answer, the target is switched to a visual acuity value one step higher. Also, for example, when the subject's answer is an incorrect answer, the target is switched to a visual acuity value one step lower. The examiner can acquire the optical characteristics (for example, the spherical power S, the cylindrical power C, the astigmatic axis angle A, and the like) of the eye E by performing the visual function test in this manner.

  For example, when the distance examination or the near examination is completed, the examiner performs the temporary frame examination on the eye E. For example, the examiner operates the operation unit 8 to raise the eye refractive power measurement unit 50 to the retracted position shown in FIG. For example, when the upper switch 8 a of the first operation unit 8 is operated, the control unit 80 drives the motor 30. For example, when moving the eye refractive power measurement unit 50 to the retracted position, the control unit 80 operates the motor in the rotation direction opposite to the rotation direction of the motor 30 when moving the eye refractive power measurement unit 50 to the inspection position. Rotate 30

  For example, when the movement of the eye refractive power measurement unit 50 to the retracted position is completed, the examiner mounts a temporary frame (trial frame or test frame) on the subject and replaces lenses (trial lenses) of various powers. While checking the feeling of wearing.

<Modification example>
In the present embodiment, as the mounting unit 90, a configuration in which a screw is used is described as an example, but the present invention is not limited to this. For example, the mounting unit 90 may have a configuration in which the eye refractive power measurement unit can be attached to the visual target presenting device 9. For example, as the mounting unit 90, various eye refractive power measurement units may be fixed to the visual target presenting device 9 using a slide mechanism. More specifically, for example, a projection is provided on one of the eye refractive power measurement unit or the visual target presenting device 9 (the mounting unit 90 of the visual target presenting device 9), and the other is a fitting that engages with the projection. A part may be provided. Also, for example, the protrusion and the fitting portion are configured to be slidable in a fitted state, and when the protrusion and the fitting portion are slid in a fitted state, one of the protrusion or the fitting portion is The slide may be blocked by the stopper. In such a case, for example, by sliding the eye refractive power measurement unit with respect to the mounting unit 90 in a state in which the projection and the fitting portion are fitted, the projection or fitting in the eye refractive power measurement unit The part abuts the stopper and the slide is blocked. By this, the eye refractive power measurement unit may be fixed to the visual target presenting device 9. Of course, the mounting unit 90 is not limited to the slide mechanism, and other fixable configurations can be used. For example, the mounting unit 90 may be configured to be fixed by tightening an eye refractive power measurement unit (for example, an arm of the eye refractive power measurement unit).

  In the present embodiment, the configuration in which the eye refractive power measurement unit 50 and the controller 81 are connected to the relay unit 200 using the external relay unit 200 has been described as an example, but the present invention is not limited to this. For example, the relay unit of the visual target presenting device 9 may be used. In this case, for example, the control unit 80 of the visual target presenting device 9 may be used as a relay unit. Of course, in this case, a relay unit may be separately provided in the visual target presenting device 9. For example, when using the control unit 80 of the visual target presenting device 9 as a relay unit, the controller may be connected to the control unit 80 as well as the eye refractive power measurement unit. Of course, both the external relay unit 200 and the internal relay unit of the visual target presenting device 9 may be used. Thus, for example, the communication unit of the visual target presenting apparatus has a relay unit for relaying the operation signal of the operating means for operating the eye refractive power measurement unit mounted on the mounting unit, and the communication unit is mounted on the relay unit. Operation unit for operating the eye refractive power measurement unit mounted on the mounting unit by connecting the operation unit for operating the eye refractive power measurement unit mounted on the unit and the eye refractive power measurement unit mounted on the unit The eye refractive power measurement unit mounted on the mounting unit may be made operable based on the operation signal from the above. Thus, the eye refractive power measurement unit can be easily operated simply by connecting the eye refractive power measurement unit and the operation means.

  In the present embodiment, the visual target presenting apparatus 9 has the eye refractive power attached to the mounting unit 90 in order to make the visual target luminous flux emitted from the display 11 visible through the inspection window of the eye refractive power measuring unit. You may make it provide the adjustment means to which the position of the optometry window of the measurement unit 50 is changed to an up-down direction. For example, as the adjusting means, the motor 30 may be driven by operating the operation unit 8 to move the eye refractive power measurement unit 50 in the vertical direction. With the above-described configuration, when various eye refractive power measurement units are mounted on the visual target presentation device, the position of the optometry window may be vertically moved from the reference position for testing according to the type of the eye refractive power measurement unit. By adjusting the position of the optometry window, it is possible to position the optometry window at the reference position for performing the examination, and the target luminous flux can be It becomes possible to visually recognize through an inspection window. By this, even in the case where the eye refractive power measurement units having different positions of the optometry window are attached to the visual target presenting apparatus to perform the subjective examination, the subjective examination can be performed favorably.

  It should be noted that in the visual target presenting apparatus 9, an eye refractive power measurement unit attached to the mounting unit 90 in order to make the visual target luminous flux emitted from the visual target presenting unit visible through the inspection window of the eye refractive power measurement unit. A mark serving as a reference when changing the position of the optometry window in the vertical direction may be provided. FIG. 11 is a view showing an example of the adjustment mark provided in the visual target presenting device 9. For example, the adjustment mark 270 indicates a reference position for moving the position of the optometry window 53 of the eye refractive power measurement unit 50 mounted on the mounting unit 90 to a position that makes the visual mark luminous flux visible through the inspection window 53. ing. For example, while checking the adjustment mark 270, the examiner operates the operation unit 8 to move the eye refractive power measurement unit 50 in the vertical direction. For example, the examiner moves the eye refractive power measurement unit 50 in the vertical direction so that the vertical position of the center of the eye inspection window 53 matches the vertical position of the adjustment mark 270. By this, it is possible to easily adjust the position of the optometry window to a position that makes the visual mark luminous flux visible through the inspection window only by adjusting the vertical position of the eye refractive power measurement unit with the adjustment mark as the target. .

  In the present embodiment, the controller 81 may be configured integrally with the housing 2. In this case, for example, the controller 81 may be attached to the housing 2. In this case, for example, the controller 81 may be configured to be attachable to the housing 2.

DESCRIPTION OF SYMBOLS 1 Subjective type optometry apparatus 2 Body 3 Presentation window 4 Holding unit 5 Connection part 6 Moving unit 7 Shaft 8 Operation part 9 Target presentation apparatus 10 Projection optical system 11 Display 30 Drive part 31 Base 32 Block 35 Holding arm 36 Block holder 38 Support member 39 Block receiver 40 Observation unit 50 Eye refractive power measurement unit 53 Inspection window 60 Corneal position aiming optical system 80 Control unit 81 Controller 82 Memory 85 Support member 90 Mounting unit 100 Eye refractive power measurement unit 110 Communication unit 140 Controller 200 Relay unit 210 relay unit 300 insertion unit 310 insertion unit

Claims (9)

A projection optical system having a target presenting unit that emits a target luminous flux, and projecting the target luminous flux emitted from the target presenting unit toward the subject's eye;
A housing for housing the projection optical system;
And a body portion having
A target presenting apparatus which projects a target luminous flux toward the subject's eye in order to subjectively measure the optical characteristics of the subject's eye,
An attaching means capable of integrally attaching an eye refractive power measurement unit for changing the optical characteristics of a target luminous flux emitted from the target presenting unit to the main body, wherein various eye refractive power measuring units are attached Possible mounting means,
Communication means for enabling communication between various eye refracting power measurement units and operation means, wherein the mounting means is connected to the mounting means based on an operation signal from the operating means for operating the eye refractive power measurement unit mounted on the mounting means. Communication means for enabling operation of the mounted eye refractive power measurement unit;
An optotype presenting apparatus comprising: In the visual target presentation device of claim 1,
The communication means can communicate at least any member of the projection optical system with an operation means for operating the eye refractive power measurement unit mounted on the mounting means, and the eye refractive power mounted on the mounting means An index presenting apparatus characterized in that at least one of members in the projection optical system is operable based on an operation signal from an operation means for operating a measurement unit. In the visual target presentation device of claim 1 or 2,
The communication unit has a first relay unit that relays an operation signal of an operation unit that operates the eye refractive power measurement unit attached to the attachment unit.
An eye refracting power measurement unit mounted on the mounting means and an operating means for operating the eye refracting power measurement unit mounted on the mounting means are connected to the first relay unit, whereby the first relay portion is connected to the mounting means. A visual target presenting apparatus characterized in that the eye refractive power measurement unit mounted on the mounting means is operable based on an operation signal from an operating means for operating the mounted eye refractive power measurement unit. In the visual target presentation device of claim 2,
A relay unit mounting unit for mounting a second relay unit relaying an operation signal of an operating unit for operating the eye refractive power measurement unit mounted on the mounting unit;
An eye refracting power measurement unit mounted on the mounting means and an operating means for operating an eye refractive power measurement unit mounted on the mounting means are connected to the second relay portion mounted on the relay part mounting means By operating the eye refracting power measurement unit mounted on the mounting means based on the operation signal from the operating means operating the eye refracting power measurement unit mounted on the mounting means;
The communication means enables communication between at least one of the members in the projection optical system and the second relay unit, and is based on an operation signal by an operation means for operating the eye refractive power measurement unit attached to the attachment means. And a mark presenting apparatus characterized in that at least one of the members in the projection optical system is operable. In the target presenting apparatus according to any one of claims 1 to 4,
In order to make the target luminous flux emitted from the target presenting unit visible through the inspection window of the eye refractive power measurement unit, the position of the optometry window of the eye refractive power measurement unit mounted on the mounting means is in the vertical direction A visual target presentation device comprising: adjustment means for changing the In the visual target presentation device of claim 5,
An adjustment mark indicating a reference position for moving the position of the optometry window of the eye refracting power measurement unit mounted on the mounting means to a position that makes the visual light flux visible through the inspection window.
The visual mark luminous flux can be made visible through the inspection window by adjusting the vertical position of the eye refractive power measurement unit mounted on the mounting means by the adjusting means based on the adjustment mark. A visual target presentation device characterized by In the target presenting apparatus according to any one of claims 1 to 6,
A holding unit that integrally connects the housing and the eye refractive power measurement unit and holds the eye refractive power measurement unit;
Equipped with
The visual target presenting apparatus, wherein the mounting means enables the eye refractive power measurement unit to be integrally mounted on the main body by enabling the eye refractive power measurement unit to be mounted on the holding means. In the target presenting apparatus according to any one of claims 1 to 7,
The projection optical system includes an optical member for guiding an image of the target luminous flux emitted from the target presenting unit to the eye so as to optically set a predetermined inspection distance. Target presentation device. In the mark presenting apparatus according to any one of claim 8,
The optical member is a concave mirror,
The projection optical system reflects the target light flux emitted by the target presenting unit toward the concave mirror and directs the target light flux reflected by the concave mirror from the inside to the outside of the housing. An index presenting apparatus comprising: a reflecting member for guiding light.