KR20210088380A - Portable ophthalmoscope device for examinating eyeball - Google Patents

Abstract

The present invention relates to a portable ophthalmoscope device capable of acquiring a clear eyeball image. According to various embodiments of the present invention, the portable ophthalmoscope device comprises: a housing including a grip housing and a main body housing extending in a perpendicular direction from the grip housing and optically coupled to a camera of an external electronic device; and an optical system disposed in the housing. The optical system includes: a light source unit disposed in the grip housing and emitting light; a lens unit disposed in the main body housing and condensing the light emitted from the light source unit; a first optical member disposed between the main body housing and the grip housing, reflecting a part of the light emitted from the light source unit toward the lens unit, and passing image light emitted from the lens unit toward the camera of the external electronic device; and a second optical member disposed between the light source unit and the first optical member and including a first part preventing the light emitted from the light source from forming an image on the first optical member. Various other embodiments are possible.

Description

PORTABLE OPHTHALMOSCOPE DEVICE FOR EXAMINATING EYEBALL

Various embodiments of the present disclosure relate to an eye examination apparatus capable of examining an eyeball state by being combined with a camera of an electronic device.

In the eye examination apparatus, an optical system may be disposed in the housing to photograph the eyeball state. Such an optical system may have a structure in which a spherical glass lens group including a plurality of lenses is disposed.

Since the eye examination apparatus uses a lens made of a glass material, it is heavy, so it is not portable, and the optical system structure is complicated, which may cause a problem in terms of manufacturing cost. In addition, in the case of a small portable electronic device such as a smart phone, optical design for a smart phone is not considered, so it may be difficult to obtain a high-resolution image of the eyeball.

According to various embodiments of the present disclosure, it is possible to provide an eye examination apparatus capable of acquiring a clear eye image by combining with a small portable electronic device such as a smart phone of various models.

According to various embodiments of the present disclosure, it is possible to provide an eye examination apparatus capable of obtaining a high-definition eye image using a plurality of light sources and an optical member.

According to various embodiments of the present disclosure, it is possible to provide an eye examination apparatus capable of communicating between a doctor and a patient using a rotatable indication target.

According to various embodiments of the present disclosure, a grip housing, a body housing extending in a perpendicular direction from the grip housing, a housing optically coupled to a camera of an external electronic device, and an optical system disposed in the housing, The optical system is disposed in the grip housing, a light source unit for illuminating light, a lens unit for condensing the illumination light emitted from the light source unit, and disposed between the body housing and the grip housing, from the light source unit A first optical member that reflects a portion of the emitted illumination light toward the lens unit and passes the image light emitted from the lens unit toward the camera of the external electronic device, and is disposed between the light source unit and the first optical member, wherein and a second optical member including a first portion that prevents the illumination light emitted from the light source from forming an image on the first optical member.

According to various embodiments of the present disclosure, a housing, and an optical system disposed in the housing, wherein the optical system includes a light source unit for illuminating light, a lens unit for condensing the illuminated illumination light from the light source unit, and a portion of the illumination light. A first optical member that reflects toward the lens unit and passes the image light emitted from the lens unit and is disposed between the light source unit and the first optical member, wherein the illumination light does not form an image on the first optical member A second optical member including the first portion may be included.

According to various embodiments of the present invention, by using a plurality of light emitting elements and an optical member to provide a level of illuminance that can obtain an image of the hypothalamus region inside the eyeball, it is possible to check whether an eye disease in a wide area with a single image. can

According to various embodiments of the present disclosure, additional area checkup of up/down/left/right including diagonal directions and four directions may be performed through the indication target.

According to various embodiments of the present invention, it is possible to provide a structure capable of minimizing the shaking of the eye examination apparatus and combining with various smart phones.

According to various embodiments of the present disclosure, by using a plurality of light emitting devices and an optical member to linearly polarize light, it may be possible to provide a high-definition eyeball state image.

1A is a perspective view illustrating a state before an electronic device is coupled to an eye examination apparatus according to various embodiments of the present disclosure;
1B is an exemplary diagram illustrating a state in which an eye examination apparatus and an electronic device are coupled along an optical axis according to various embodiments of the present disclosure;
2 is an exploded perspective view illustrating an internal configuration of an eye examination apparatus according to various embodiments of the present disclosure;
3 is a cutaway perspective view illustrating an internal structure of an eye examination apparatus according to various embodiments of the present disclosure;
4 is a cross-sectional view illustrating an internal configuration of an eye examination apparatus according to various embodiments of the present disclosure.
5A is a side view illustrating a configuration of a lens unit of an eye examination apparatus according to various embodiments of the present disclosure;
5B is a partially cut-away perspective view illustrating a configuration of a lens unit of an eye examination apparatus according to various embodiments of the present disclosure;
6 is a perspective view illustrating a key assembly of an eye examination apparatus according to various embodiments of the present disclosure;
7A is a front view illustrating a state in which a battery is inserted into a grip housing according to various embodiments of the present disclosure;
7B is a perspective view illustrating a battery cover and a third circuit board according to various embodiments of the present disclosure;
7C is a perspective view illustrating a third circuit board according to various embodiments of the present disclosure;
8 is a side view illustrating a state before the decorative ring is mounted on the body housing according to various embodiments of the present disclosure;
9 is an exploded perspective view of a housing according to various embodiments of the present disclosure;
10A to 10C are perspective views sequentially illustrating a mounting process of a holder unit according to various embodiments of the present invention.
10D is a front view illustrating a state in which the holder and the elastic body are mounted on the rear surface of the main housing according to various embodiments of the present disclosure;
11 is a plan view illustrating a state in which a plurality of light emitting devices are disposed on a first circuit board according to various embodiments of the present disclosure;
12A is a top view illustrating a second optical member according to various embodiments of the present disclosure;
12B is a side view illustrating a second optical member according to various embodiments of the present disclosure;
13 is a diagram schematically illustrating an arrangement state of a second optical member and a plurality of light emitting devices according to various embodiments of the present disclosure;
14A is a front view illustrating a target display unit of an indication target according to various embodiments of the present disclosure;
14B is a rear view illustrating an indication target according to various embodiments of the present disclosure;
Fig. 14C is a side view of Fig. 14A;
15 is a diagram schematically illustrating an optical path of an optical system according to various embodiments of the present disclosure.
16 is a view three-dimensionally illustrating an optical path of an optical system according to various embodiments of the present disclosure.
17 is a diagram schematically illustrating an optical path of an optical system according to various embodiments of the present disclosure.
18 is a perspective view illustrating a process of aligning a border line displayed on a display of an electronic device coupled to an eye examination apparatus according to various embodiments of the present disclosure;
19A and 19B are partially cutaway perspective views each illustrating a state in which a lens unit is separated from a body housing according to various embodiments of the present disclosure;

Hereinafter, various embodiments of the present disclosure are described with reference to the accompanying drawings. However, this is not intended to limit the present disclosure to specific embodiments, and it should be understood to cover various modifications, equivalents, and/or alternatives of the embodiments of the present disclosure. In connection with the description of the drawings, like reference numerals may be used for like components.

An electronic device according to various embodiments of the present disclosure may include, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone, and an e-book reader. , desktop personal computer, laptop personal computer, netbook computer, workstation, server, personal digital assistant (PDA), portable multimedia player (PMP), MP3 player, mobile Medical devices, cameras, or wearable devices (e.g. smart glasses, head-mounted-devices (HMDs)), electronic garments, electronic bracelets, electronic necklaces, electronic accessories. ), an electronic tattoo, a smart mirror, or a smart watch).

In some embodiments, the electronic device may be a smart home appliance. Smart home appliances, for example, televisions, digital video disk (DVD) players, audio, refrigerators, air conditioners, vacuum cleaners, ovens, microwave ovens, washing machines, air purifiers, set-top boxes (set-top box), home automation Control panel (home automation control panel), security control panel (security control panel), TV box (eg Samsung HomeSync??, Apple TV ^TM or Google TV ^TM , game console (eg Xbox??, PlayStation??); It may include at least one of an electronic dictionary, an electronic key, a camcorder, and an electronic picture frame.

In another embodiment, the electronic device may include various medical devices (eg, various portable medical measuring devices (eg, a blood glucose monitor, a heart rate monitor, a blood pressure monitor, or a body temperature monitor), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), CT (computed tomography), imager, or ultrasound machine, etc.), navigation device, global positioning system receiver, EDR (event data recorder), FDR (flight data recorder), automotive infotainment device, marine use Electronic equipment (e.g. navigation devices for ships, gyro compasses, etc.), avionics, security devices, head units for vehicles, industrial or domestic robots, automatic teller's machines (ATMs) in financial institutions, POS in stores (point of sales), or internet of things (e.g. light bulbs, sensors, electricity or gas meters, sprinkler devices, smoke alarms, thermostats, street lights, toasters, exercise equipment, It may include at least one of a hot water tank, a heater, or a boiler).

According to some embodiments, the electronic device is a piece of furniture or part of a building/structure, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (eg, water, electricity, gas, or a radio wave measuring device). In various embodiments, the electronic device may be a combination of one or more of the various devices described above. The electronic device according to an embodiment may be a flexible electronic device. In addition, the electronic device according to an embodiment of the present disclosure is not limited to the above-described devices, and may include a new electronic device according to technological development.

1 is a perspective view illustrating a state before an eye examination apparatus is coupled to an electronic device according to various embodiments of the present disclosure;

According to various embodiments of the present disclosure, the eye examination apparatus 20 may include a housing 23 , a lens unit 33 , a holder unit 37 , and/or an eyecup 337 .

Referring to FIG. 1 , according to an embodiment of the present invention, an eye examination apparatus 20 may be a device coupled to an electronic device 10 and an optical axis. According to an embodiment, the electronic device 10 includes a front surface 10a and a rear surface 10b, the display 101 is disposed on the front surface 10a, and the camera 110 is disposed on the rear surface 10b. can For example, the eye examination apparatus 20 may be a device coupled to the camera 110 disposed on the rear surface 10b through the optical axis a1 . A user (eg, a doctor) may check the result or image of the eye (e) examination state through the display 101 of the electronic device 10 .

According to one embodiment, the eye examination apparatus 20 is optically coupled to the optical axis a1 of the camera 110 of the electronic device 10 , that is, substantially the same as the optical axis a1 of the camera 110 . It may be a portable medical assistance device capable of examining the condition of the eyeball (e) of a test subject (eg, a patient) by being combined with each other. According to one embodiment, the eye examination apparatus 20 may include a housing 23 including an optical system for examining the eyeball e.

According to one embodiment, the housing 23 may include a grip housing 21 and a body housing 22 . According to one embodiment, the grip housing 21 is a handle portion and may be a portion serving as a center of gravity of the eye examination apparatus 20 . For example, the grip housing 21 may have a cylindrical appearance and may have a shape extending in one direction from the main housing 22 .

According to an embodiment, the body housing 22 may have a shape extending in a vertical direction from the grip housing 21 , and may be, for example, a cylindrical shape. According to an embodiment, the lens unit 33 may be disposed on one side of the body housing 22 and the holder unit 37 may be disposed on the other side. According to one embodiment, an eyecup 337 connected to the lens unit 33 is disposed on the front side of the body housing 22 , and the optical axis of the camera and the lens unit 33 of the electronic device 10 are disposed on the rear side of the body housing 22 . The holder part 37 may be disposed so that the optical axes are substantially identically coupled.

According to an embodiment, since the optical axis of the lens unit 33 of the eye examination apparatus 20 and the optical axis of the camera of the electronic device 10 can be coupled substantially equally, the user of the eye examination apparatus can select the eye of the eye examination target. can be inspected.

2 is an exploded perspective view illustrating an internal configuration of an eye examination apparatus according to various embodiments of the present disclosure; 3 is a cutaway perspective view illustrating an internal structure of an eye examination apparatus according to various embodiments of the present disclosure; 4 is a cross-sectional view illustrating an internal configuration of an eye examination apparatus according to various embodiments of the present disclosure.

The structure and optical system of the eye examination apparatus 20 according to various embodiments of the present invention will be described with reference to FIGS. 2 to 4 .

2 to 4 , the housing 23 according to an exemplary embodiment may include an optical system. According to one embodiment, the optical system may include a light source unit 31 , a lens unit 33 , and at least one or more optical members 32 , 34 , and 39 . According to one embodiment, the light source 31 may be disposed on the grip housing 21 to illuminate the eye toward the eye, for example, toward the body housing 22 .

According to one embodiment, the lens unit 33 may be disposed on the body housing 22 to collect illumination light. According to an embodiment, the at least one or more optical members may include first, second, and third optical members 32 , 34 , and 39 . According to one embodiment, the first optical member 32 may be disposed at an inclined angle, for example, 35 degrees to 55 degrees, inclined to the body housing 22 (eg, the optical axis of the lens part 33 ). . For example, the angle at which the first optical member 32 is inclined to the body housing 22 (eg, the optical axis of the lens unit 33 ) may be 45 degrees. According to one embodiment, the first optical member 32 is a beam splitter, and has a function of reflecting the illumination light emitted from the light source unit 31 toward the eyeball (for example, the lens unit 33 direction), and the lens unit 33 ) may be a polarizing plate having a function of allowing image light emitted from the electronic device 10 to exit toward the camera of the electronic device 10 .

According to one embodiment, the second optical member 34 is disposed between the light source unit 31 and the first optical member 32, and linearly polarizes the illumination light emitted from the light source unit 31 (or rotationally polarized light). A polarizing film may be included. According to one embodiment, the second optical member 34 has a function of preventing the illumination light emitted from the light source unit 31 from forming an image on the first optical member 32 and blocking the direct light from the light source unit 31 . function can be assumed. According to one embodiment, among the functions of the first optical member 32 , the function of preventing an image from being formed on the first optical member 32 is that the illumination light inside, not the eyeball image, is generated by the first optical member, that is, the beam splitter. When the image is formed on the , it may be a function of preventing resolution degradation due to overlapping with the eye image.

According to an embodiment, the third optical member 39 may be disposed on the rear surface of the main body housing 22 facing the camera 110 of the electronic device 10 . For example, the third optical member 39 may be a polarizing film or a polarizing plate. According to an embodiment, the third optical member 39 may be determined in consideration of a mounting state (horizontal or vertical) of the electronic device 10 .

For example, when the electronic device 10 is mounted in the horizontal direction, the third optical member 39 may be a polarizing member that allows image light to pass through corresponding to the horizontal mounting, and the electronic device 10 . When is in the vertical mounting state, the third optical member may be a polarizing member that allows image light corresponding to the vertical mounting state to pass therethrough.

According to another exemplary embodiment, in the third optical member 39 , at least some of the lights that are not reflected toward the eye (e) side (eg, the lens unit 33 direction) among the illumination light emitted from the light source unit 31 are electrons. It may have a function of blocking light emitted to the camera of the device 10 .

According to an embodiment, the light source unit 31 may include at least one circuit board 311-313 and a plurality of light emitting devices 3110 . According to an embodiment, the first circuit board 311 may be a circuit board on which a light source is disposed, the second circuit board 312 may be a control circuit board, and the third circuit board 313 may be a power protection circuit board. . According to an embodiment, the second circuit board 312 may include a processor and a communication circuit. In an embodiment, the processor may control the plurality of light emitting elements 3110 or control a communication circuit to communicate with the electronic device 10 . For example, when power is applied to the eye examination apparatus 20 , the processor may control the at least one light emitting element 3110 to emit light. As another example, when photographing through the camera of the electronic device 10 is required (eg, when a photographing button is pressed), the processor may transmit a photographing signal to the electronic device 10 through a communication circuit. According to an embodiment, the electronic device 10 and the eye examination apparatus 20 may include Bluetooth (Bluetooth), Bluetooth low energy (BLE), wireless fidelity (WiFi), Zigbee, and near field communication (NFC). ), magnetic secure transmission, radio frequency (RF), or body area network (BAN). According to an embodiment, the first to third circuit boards 311-313 may be disposed to be stacked vertically along the extending direction of the grip housing 21 . For example, each of the first to third circuit boards 311-313 may be circular. According to an embodiment, the first to third circuit boards 311-313 may be electrically connected using a connection terminal, a conductive wire, or a flexible circuit board.

According to one embodiment, the lens unit 33 may be rotatably coupled to one side of the body housing 22 to focus the image. According to one embodiment, one side of the lens unit 33 may be coupled to the eye cup 337 , and the other end may be rotatably coupled to the body housing 22 . According to one embodiment, the lens unit 33 may include at least one or more lenses 334 and 335 to collect the received illumination light. For example, the lens includes first and second lenses 334 and 335 spaced apart from each other, and each of the first and second lenses 334 and 335 may be a convex lens.

According to one embodiment, the grip housing 21 may include a battery 35 . According to an embodiment, the battery 35 may be disposed between the first to third circuit boards 311-313 and the battery cover 352 to supply power and serve as a center of gravity. For example, the battery 35 may include a plurality of cylindrical batteries 350 , and may be positioned in the grip housing 21 through the battery electrode support plate 351 and the battery cover 352 .

According to one embodiment, the body housing 22 has a holder part 37 disposed on the rear surface thereof so that the optical axis of the camera of the electronic device 10 and the optical axis of the lens unit 33 are substantially the same (eg, in FIG. 1B ). A1) can be followed to make it coupled. According to one embodiment, the holder part 37 may include a pair of holders 371 and a coupling plate 373 for coupling the pair of holders 371 to the rear surface of the body housing 22 .

According to one embodiment, an indication target 38 (indication target) may be further disposed on the rear surface of the main body housing 22 . According to one embodiment, the indication target 38 is disposed between the rear surface of the main body housing 22 and the holder part 37, and may be rotatably coupled. According to one embodiment, after the camera of the electronic device 10 is coupled to the body housing 22 by the holder part 37 on the same optical axis as the optical axis of the lens part 33 , the indication target 38 is , for communication between doctors and patients. According to one embodiment, the indication target 38 is marked on one surface and the other surface, respectively, so that communication between the doctor and the patient may be possible. For example, the rotation amount of the indication target 38 may be approximately 180 degrees. For example, the indication target 38 is positioned in the first direction (eg, right when viewed from the holder part 37) before the rotation of the body housing 22, and after rotating by 180 degrees, the body housing 22 is positioned in the second direction ( Example: As it is located on the left side when viewed from the direction of the holder part 37 , it can be used to examine the right eye or left eye.

According to one embodiment, the grip housing 21 may include a key assembly 36 . According to one embodiment, the key assembly 36 may include at least one or more keys 362 and 365 , a key decoration member 361 , a flexible circuit board 363 (FPCB), and an LED status window 364 . . The keys 362 and 365 of the key assembly 36 and the key decoration member 361 may be disposed on the outer peripheral surface of the grip housing 21 .

5A is a side view illustrating a configuration of a lens unit of an eye examination apparatus according to various embodiments of the present disclosure; 5B is a partially cut-away perspective view illustrating a configuration of a lens unit of an eye examination apparatus according to various embodiments of the present disclosure;

5A and 5B, the lens unit 33 according to one embodiment may include at least one or more lenses 334 and 335, at least one or more spacers 332 and 333, and/or a lens holder 331. have. According to one embodiment, the eye cup 337 may be positioned on one surface of the lens unit 33 . According to one embodiment, the coupling structure between the eye cup 337 and the lens holder 331 may be locked or unlocked by coupling between the coupling protrusion and the coupling groove. For example, the eyecup 337 may be inserted into one end of the lens holder 331 and then rotated in the forward direction to be locked, or the eyecup 337 may be rotated in the reverse direction and then released to release the locked state. According to another embodiment, the coupling between the eye cup 337 and the lens holder 331 may be coupled based on an adhesive member.

According to one embodiment, at least one or more lenses may include first and second convex lenses 334 and 335 disposed in the lens holder 331 . Each of the first and second convex lenses 334 and 335 may collect light.

According to one embodiment, the first and second spacers 332 and 333 and the first and second convex lenses 334 and 335 may be disposed on the lens holder 331 . According to one embodiment, the first convex lens 334 is fixed between one end of the lens holder 331 and the first spacer 332 , and the second convex lens 334 is fixed between the first spacer 332 and the second spacer 333 . Convex Lenses According to an exemplary embodiment, the first and second convex lenses 334 and 335 may face each other based on the first spacer 332 , and the first and second spacers 332 and 333 may face each other.

According to one embodiment, the first and second convex lenses 334 and 335 and the first and second spacers 332 and 333 may be accommodated along the optical axis a1 in the lens holder 331 . For example, a thread protrusion is formed on the outer circumferential surface of the lens holder 331 , so that it can be rotatably positioned on the body housing 22 .

According to one embodiment, the lens holder 331 is screwed to the body housing 22 and rotated clockwise or counterclockwise to move back and forth along the optical axis a1 . According to the movement of the lens holder 331 , the image focus of the eyeball may be adjusted.

According to one embodiment, the lens holder 331 may be coupled to a lens cover 336 to protect the first and second convex lenses 334 and 335 . For example, the lens cover 336 may be made of a transparent material. According to one embodiment, the lens holder 331 is coupled to the eyecup 337 to prevent light leakage of the illumination light. For example, the eyecup 337 may be made of a soft material, and may be stretchable or compressible by forming a wrinkled portion.

6 is a perspective view illustrating a key assembly of an eye examination apparatus according to various embodiments of the present disclosure;

Referring to FIG. 6 , a key assembly 36 according to an exemplary embodiment includes a key decorative member 361 installed on the outer peripheral surface of the grip housing 21 , and first and second keys 362 and 365 mounted on the key decorative member 361 . ) and an LED status window 364 disposed between the first and second keys 362 and 365 , and a flexible circuit board 363 .

According to one embodiment, the first key 362 may be a shot button key, and the second key 365 may be a power on/off switch. According to an embodiment, the flexible circuit board 363 may be electrically connected to the second circuit board 312 to transmit signals according to the operation of each of the first and second keys 362 and 365 . For example, each of the first and second keys 362 and 365 may be turned on or off by a pressing operation. For example, the first key 362 may perform a power on/off operation and enable the light emitting device to emit light using the power of the battery, and the second key 365 may be used by the processor in the second circuit board. A photographing signal may be transmitted to the electronic device through the communication circuit.

According to an embodiment, the state of the eye examination apparatus 20 may be checked through the LED state window 364 . For example, when the eye examination apparatus 20 is in a normal driving state, the LED status window 364 is blue, in an overheating state, in red, and in a communication state with the electronic device 10, in a blue blinking state. In the current state, yellow may be emitted.

7A is a front view illustrating a state in which a battery is inserted into a grip housing according to various embodiments of the present disclosure; 7B is a perspective view illustrating a battery cover and a third circuit board according to various embodiments of the present disclosure; 7C is a perspective view illustrating a third circuit board according to various embodiments of the present disclosure;

7A to 7C , the grip housing 21 according to an exemplary embodiment may include a battery 35 on one side of the light source unit 31 . According to one embodiment, the battery 35 includes at least one or more cylindrical batteries 350 , a battery electrode support plate 351 for electrically connecting to the cylindrical battery 350 , and a cylindrical battery accommodated in the grip housing 21 . A battery cover 352 for fixing and protecting the 350 may be included. According to another exemplary embodiment, the number and shape of the batteries 35 may be varied. For example, the battery 35 may be a rectangular battery.

According to one embodiment, at least one or more batteries 35 , for example, four cylindrical batteries 350 may be disposed in the battery receiving part 212 of the grip housing 21 . According to one embodiment, the battery support plate 351 has a plurality of connecting members 3512 and 3514 for electrically connecting to the battery 35 disposed on one surface, and fixed ribs ( 3510) may be included.

According to one embodiment, the plurality of connection members 3512 and 3514 disposed on the battery support plate 351 include a (+) electrode and a (-) electrode, and a (-) electrode of each cylindrical battery 350 . and (+) electrode. For example, the first elastic members 3516 and 3518 are disposed on the (+) electrode disposed on the battery support plate 351 , respectively, and may be electrically connected to the (−) electrode of the cylindrical battery 350, and the (−) electrode (3513, 3515) may be electrically connected to the (+) electrode of the cylindrical battery.

According to one embodiment, a second elastic body 3130 may be disposed on one surface of the third circuit board 313 at the (+) electrode in order to be electrically connected to the (-) electrode of the cylindrical battery 350 .

8 is a side view illustrating a state before the decorative ring is mounted on the body housing according to various embodiments of the present disclosure;

Referring to FIG. 8 , the body housing 22 according to an exemplary embodiment may further include a decorative ring 221 . For example, the decorative ring 221 may be formed in various colors and coupled to one side of the body housing 22 . According to one embodiment, the decorative ring 221 may be disposed between the body housing 22 and the lens unit 33 .

According to one embodiment, the decorative ring 221 may serve to prevent external light from entering or from leaking out due to the opening of the assembled body housing 22 .

9 is an exploded perspective view of a housing according to various embodiments of the present disclosure;

Referring to FIG. 9 , the housing 23 according to an embodiment may include a left housing 231 and a right housing 232 , and the left housing 231 and the right housing 232 are combined to form one A housing (eg, the housing 23 shown in FIG. 1 ) may be formed. According to one embodiment, the left housing 231 and the right housing 232 may be combined to form the grip housing 21 and the body housing 22 shown in FIG. 1 .

10A to 10C are perspective views sequentially illustrating a mounting process of a holder unit according to various embodiments of the present invention. 10D is a front view illustrating a state in which the holder and the elastic body are mounted on the rear surface of the main housing according to various embodiments of the present disclosure;

10A to 10D , according to one embodiment, an indication target 38 may be rotatably coupled to the rear surface of the body housing 22 about an optical axis a1 . For example, the optical axis a1 may be substantially the same as the optical axis of the lens unit 33 and the optical axis of the camera of the electronic device 10 when the electronic device 10 is overlapped with the eye examination apparatus 20 . According to one embodiment, the indication target 38 may include a disk-shaped display portion 380 and a ring-shaped portion 381 . According to an exemplary embodiment, a plurality of display units may be marked on one surface of the disk-shaped display portion 380 and the other surface in the opposite direction. For example, communication between a doctor and a patient may be possible using the display unit of the disc-shaped display portion 380 . According to one embodiment, the ring-shaped portion 381 may be a coupling portion that rotatably connects the disk-shaped indicator portion 380 to the body housing 22 . According to one embodiment, the ring-shaped part 381 may be inserted into a coupling groove formed in the rear outer periphery of the body housing 22 . For example, the indication target 38 may rotate about the same axis as the optical axis a1 . For example, the indication target 38 may be rotatably coupled by approximately 180 degrees.

In the main housing 22 according to an embodiment, the holder part 37 may be disposed on one side (eg, a direction in which the electronic device 10 is coupled). According to one embodiment, the holder part 37 may include a pair of holders 371 , an elastic body 372 , and a coupling plate 373 . According to one embodiment, the pair of holders 371 face each other, and may be provided with a force to move in a direction to be closer to each other by the elastic body 372 . According to one embodiment, the pair of holders 371 and the elastic body 372 may be movably assembled by the guide structure 210 formed on one side of the body housing 22 . According to an embodiment, the pair of holders 371 may be members for holding the mounted electronic device (eg, the electronic device 10 shown in FIG. 1 ).

According to an embodiment, the elastic body 372 may be connected to each holder 371 to provide an elastic force to the pair of holders 371 in a direction to approach each other. For example, the elastic body 372 is a tension coil spring, and both ends thereof are connected to the holder 371 , respectively, and may be disposed in a groove formed on the rear surface of the main body housing 22 .

According to one embodiment, the main body housing 22 is coupled to the holder 371 and the coupling plate 373 for supporting the holder on the rear surface on which the elastic body 372 is disposed, so as to movably support the disposed holder 371 . can do. For example, the coupling plate 373 has a ring shape and may be coupled to the rear surface of the body housing 22 using a screw. According to one embodiment, the coupling plate 373 may be concentrically coupled to the optical axis a1.

Although not shown in the drawings, according to an embodiment, the holder part 37 may be movable while the electronic device 10 is coupled thereto. For example, when the optical axis of the camera of the electronic device 10 and the optical axis of the lens unit 33 (eg, the optical axis a1) do not coincide, the holder unit 37 is moved to move the camera of the electronic device 10 . can move the optical axis.

According to another embodiment, the holder part 37 may support rotation of about 90 degrees left/right in a state in which the optical axis of the camera of the electronic device 10 and the optical axis of the lens part 33 coincide with each other. For example, in the embodiment of the present invention, the holder part 37 is exemplified as being fixed to one side of the body housing 22 using a fastener, but the holder part 37 is rotatable on one side of the body housing 22 . The coupled electronic device 10 may be rotated by about 90 degrees in the forward direction or by about 90 degrees in the reverse direction by the fastening structure.

For example, when the third optical member 39 can transmit image light in the horizontal direction, the electronic device 10 is coupled in the horizontal direction, and the third optical member 39 passes the image light in the vertical direction. If possible, the holder part 37 may rotate the coupled electronic device 10 by about 90 degrees so that the electronic device 10 can be vertically coupled.

11 is a plan view illustrating a state in which a plurality of light emitting devices are disposed on a first circuit board according to various embodiments of the present disclosure;

Referring to FIG. 11 , as a light source on a first surface 311a of a first circuit board 311 , a plurality of light emitting devices 3110 may be disposed. According to one embodiment, the plurality of light emitting devices 3110 may be disposed at equal intervals along the outer circumferential direction on the first surface 311a. For example, the plurality of light emitting devices 3110 may include LEDs.

According to one embodiment, the plurality of light emitting devices 3110 may be symmetrically disposed on the first surface 311a, for example, in the vertical direction and the left and right directions. For example, 6 to 10 of the plurality of light emitting devices 3110 may be disposed on the first surface 311a. For example, eight light emitting devices 3110 may be disposed. According to one embodiment, the plurality of light emitting devices 3110 used as illumination light may be symmetrically disposed to uniformly illuminate the entire eyeball positioned close to the eyecup 337 to obtain a high-resolution image, , eight light emitting devices 3110 may be arranged at equal intervals.

According to an embodiment, at least one infrared emitter 3112 (IR emitter) may be disposed on the first surface 311a of the first circuit board 311 . According to one embodiment, at least one infrared emitter 3112 illuminates infrared light toward an eye located proximate to an eyecup 337 , thereby providing an infrared image to an image sensor of the electronic device 10 . can do. According to one embodiment, each infrared emitter 3112 may be disposed between each light emitting element 3110 .

According to one embodiment, at least one or more infrared emitters 3112 may be arranged at equal intervals in the outer circumferential direction. For example, at least one or more infrared emitters 3112 may be symmetrically disposed vertically, horizontally, or vertically.

12A is a top view illustrating a second optical member according to various embodiments of the present disclosure; . 12B is a side view illustrating a second optical member according to various embodiments of the present disclosure;

12A 12B , the second optical member 34 according to an exemplary embodiment includes a light source unit (eg, the light source unit 31 shown in FIG. 2 ) and a first optical member (eg, the first optical member shown in FIG. 2 ). It is disposed between the optical members 32), so that the illumination light illuminated from the plurality of light emitting element portions can be linearly polarized. According to an embodiment, the second optical member 34 may include a polarizing plate 340 (a polarizing plate) and a blocking film 342 (blocking sheet). According to one embodiment, the polarizing plate 340 is a transparent film, and may be a linearly polarized optical member that passes light of a specific wavelength band and blocks light of the remaining band.

According to one embodiment, the shielding film 342 is a sheet of an opaque material attached to the polarizing plate 340 , and an image is formed on the first optical member (eg, the first optical member 32 shown in FIG. 2 ) of the illumination light. It may be a blocking member that blocks the illumination light directly from each of the light emitting devices (eg, the plurality of light emitting devices 3110 shown in FIG. 11 ).

According to an embodiment, the shielding layer 342 may include a concentric circle portion 3421 . According to one embodiment, the concentric circle portion 3421 can prevent image damage caused by central overlap of illumination light illuminated from each light emitting element, for example, eight light emitting elements arranged at equal intervals, eg, circular central overlap. have.

According to one embodiment, the shielding layer 342 may further include a ring-shaped portion 3422 at a position concentrically spaced apart from the concentric circle portion 3421 . According to one embodiment, the ring-shaped portion 3422 may block a flare imaged on the lens by the straight light illuminated from each light emitting element. According to one embodiment, the shielding film 342 may include a plurality of openings 3423 formed between the concentric circle portion 3421 and the ring-shaped portion 3422 . For example, the plurality of openings 3423 may generally have a ring shape. According to one embodiment, the plurality of openings 3423 is a light path through which the illumination lights illuminated from the light source unit 31 pass, and the concentric circle portion 3421 and the ring-shaped portion 3422 are formed through at least one or more bridge portions 3424 . It can be physically connected as one unit. According to an embodiment, at least one or more bridge portions 3424 may be omitted. For example, the concentric circle portion 3421 may be attached to the polarizing plate 340 .

13 is a diagram schematically illustrating an arrangement state of a second optical member and a plurality of light emitting devices according to various embodiments of the present disclosure;

Referring to FIG. 13 , according to one embodiment, the second optical member has a diameter (d1) size of the concentric circle portion 3421, an outer diameter (d3) size or an inner diameter (d2) size of the ring-shaped portion 3422. It may be adjusted according to the arrangement position of the plurality of light emitting devices 3110 arranged. For example, the concentric circle portion 3421 is shaped to block the overlapping portion between the illumination light illuminated from each light emitting element 3110, and the ring-shaped portion 3422 must block the straight light of each light emitting element 3110, The opening 3423 may have a shape through which illumination light illuminated from each light emitting element 3110 should pass.

According to one embodiment, the size of the diameter d1 of the concentric portion 3421 or the size of the outer diameter d3 or the inner diameter d2 of the ring-shaped portion 3422 is the size of the grip housing (eg, the grip shown in FIG. 1 ). The size of the inside of the housing 21) or the distance from the light emitting elements 3110 may be adjusted.

14A is a front view illustrating a target display unit of an indication target according to various embodiments of the present disclosure; 14B is a rear view illustrating an indication target according to various embodiments of the present disclosure; Fig. 14C is a side view of Fig. 14A;

14A to 14C , the indication target 38 according to an embodiment has a plurality of display target marks 3801 and 3802 on one surface 380a and the other surface 380b of the disk-shaped display part 380, respectively. can be formed. According to an embodiment, each of the display target marks 3801 and 3802 may be formed for communication between a user (eg, a doctor) of the eye examination apparatus and an eye examination target (eg, a patient). For example, each of the display target marks 3801 and 3802 may include an airplane, a hand, a tree, a crescent moon, a flower, a fish, an eye, and/or a star. The user of the eye examination apparatus uses the display target mark 3801 to move the pupil of the examination object up, down, left and right, so that the field of view (FOV) of the eye can be enlarged and a wider eye area can be examined. have. For example, when there is no display target mark 3801.3802, the angle of view of the patient's eyeball is about 50 degrees, whereas when the display target marks 3801 and 3802 are used, the angle of view of the patient's eye can be enlarged to about 80 degrees. have.

15 is a diagram schematically illustrating an optical path of an optical system according to various embodiments of the present disclosure. 16 is a three-dimensional view illustrating an optical path of an optical system according to various embodiments of the present disclosure. 17 is a diagram schematically illustrating an optical path of an optical system according to various embodiments of the present disclosure.

15 to 17 , the optical path of the optical system provided in the eye examination apparatus 20 according to an exemplary embodiment is as follows. The illumination light L1 emitted from the plurality of light emitting devices 3110 according to an embodiment may pass through the second optical member 34 and be illuminated by the first optical member 32 . The illuminated illumination light L1 may be reflected by the first optical member 32 and may be directed toward the lens unit 33 . The reflected illumination light L2 may be condensed by the lens unit 33 to reach the eyeball e. The focused image light L3 of the eyeball e is directed toward the first optical member 32 , and the eyeball image light L3 passing through the first optical member 32 is the camera 110 of the electronic device 10 . The eyeball image light l3 emitted toward the camera 110 may be received by an image sensor of the camera 110 .

According to one embodiment, in the eye examination apparatus 20, since the illumination light L1 and the image light L3 share the same optical path, in order to reduce internal reflection by the illumination light, the inner surface of the housing may be coated with a black color. can

According to an embodiment, in consideration of the mounting direction of the image sensor mounted on the electronic device 10 , the third optical member 39 disposed in front of the image sensor may transmit horizontal linearly polarized light to the second optical member disposed in front of the light emitting device 3110 . The optical member 34 may be vertically linearly polarized light.

According to an embodiment, when the illumination light L1 illuminated by the light source unit is reflected by the first optical member 32 , optical axis movement may occur depending on the thickness of the first optical member 32 . Considering this, the first optical member 32 . The member 32 may be disposed to move in a downward direction.

16 and 17 , according to an exemplary embodiment, a third lens 325 may be additionally disposed between the plurality of light emitting devices 3110 and the second optical member 32 . For example, the third lens 325 may be a convex lens. According to an embodiment, the illumination light emitted from each light emitting device 3110 may be received by the first optical member 32 in a state of being condensed by the third lens 325 .

According to one embodiment, when the physical illumination length of the illumination light emitted from each light emitting element 3110 is short or the illuminance of the light source unit is low, the eye examination apparatus uses the third lens 325, for example, the illumination light through the third convex lens. can increase the intensity of

18 is a perspective view illustrating a process of aligning a border line displayed on a display of an electronic device coupled to an eye examination apparatus according to various embodiments of the present disclosure;

Referring to FIG. 18 , the eye examination apparatus 20 according to an exemplary embodiment adjusts the coupling position of the electronic device 10 according to the border line BL of the application displayed on the display 101 of the electronic device 10 . can

19A and 19B are partially cutaway perspective views respectively illustrating a state in which a lens unit is separated from a main body housing according to various embodiments of the present disclosure;

19A and 19B , according to an exemplary embodiment, the lens unit 33 may secure a focal length of an image through manipulation. For example, the coupling structure of the lens unit 33 enables the first and second convex lenses 334 and 335 to move, so that even when electronic devices of various focal lengths (eg, the electronic device 10 shown in FIG. 1 ) are combined. A clear image can be obtained. According to one embodiment, the lens unit 33 moves back and forth in the body housing 22 while maintaining the same optical axis (eg, the optical axis a1 in FIG. 1 ) along the optical axis by screwing movement according to the screw-type coupling structure. can do.

According to one embodiment, the lens holder 331 may be fastened to the body housing 22 by a tapping method. For example, the bonding structure of the tapping method may have no assembly gap, and may move back and forth while maintaining the same optical axis along the optical axis.

According to one embodiment, the eyecup 337 may be a compression type eyecup that can be adjusted while measuring the distance between the fundus of each person.

According to one embodiment, in an eye examination device (eg, the eye examination device 20 shown in FIG. 1 ), a grip housing (eg, the grip housing 21 shown in FIG. 1 ) and the grip housing (eg, the grip housing 21 shown in FIG. 1 ) : includes a body housing (eg, the body housing 22 shown in FIG. 1 ) extending in a right angle direction from the grip housing 21 shown in FIG. 1 , and an external electronic device (eg, the electronic device shown in FIG. 1 ) a housing (eg, housing 23 shown in FIG. 1 ) optically coupled to a camera of device 10 ) and optics disposed within the housing, wherein the optics include the grip housing (eg, shown in FIG. 1 ) is disposed in the grip housing 21), a light source unit for illuminating light (eg, the light source unit 31 shown in FIG. 2), and the main body housing (eg, the body housing 22 shown in FIG. 1). , a lens unit (eg, the lens unit 33 illustrated in FIG. 2 ) for condensing illumination light emitted from the light source unit (eg, the light source unit 31 illustrated in FIG. 2 ), and the body housing (eg, illustrated in FIG. 1 ) is disposed between the main body housing 22) and the grip housing (eg, the grip housing 21 shown in FIG. 1), and the illumination light emitted from the light source unit (eg, the light source unit 31 shown in FIG. 2) A portion is reflected toward the lens unit (eg, the lens unit 33 shown in FIG. 2 ), and image light emitted from the lens unit (eg, the lens unit 33 shown in FIG. 2 ) is transmitted to the external electronic device A first optical member (eg, the first optical member 32 shown in FIG. 2 ) and the light source unit (eg, shown in FIG. 2 ) passing toward the camera of (eg, the electronic device 10 shown in FIG. 1 ) It is disposed between the light source unit 31) and the first optical member (eg, the first optical member 32 shown in FIG. 2), and emitted from the light source unit (eg, the light source unit 31 shown in FIG. 2). A second optical member (eg, the second optical member shown in FIG. 2 ) including a first portion for preventing the illumination light from forming an image on the first optical member (eg, the first optical member 32 shown in FIG. 2 ) 2 optical members 34).

According to an embodiment, the light source unit (eg, the light source unit 31 shown in FIG. 2 ) includes a first surface disposed to face the first optical member (eg, the first optical member 32 shown in FIG. 2 ) and , a first circuit board (eg, the first circuit board 311 illustrated in FIG. 2 ) including a second surface opposite to the first surface, and a plurality of light emitting devices (eg, FIG. 2 ) disposed on the first surface 11 ), and the plurality of light emitting devices (eg, the light emitting devices 3110 shown in FIG. 11 ) may be arranged at equal intervals along the outer circumferential direction of the first surface. .

According to an embodiment, the plurality of light emitting devices (eg, the light emitting devices 3110 illustrated in FIG. 11 ) may be symmetrically disposed when viewed from the first surface.

According to an embodiment, 6 to 10 of the plurality of light emitting devices (eg, the light emitting devices 3110 illustrated in FIG. 11 ) may be disposed.

According to an embodiment, at least one infrared emitter (eg, the emitter 3112 illustrated in FIG. 11 ) is further disposed between the plurality of light emitting elements (eg, the light emitting element 3110 illustrated in FIG. 11 ). can be

According to an embodiment, the first optical member (eg, the first optical member 32 illustrated in FIG. 2 ) is a beam splitter and may be disposed to be inclined at 35 degrees to 55 degrees with respect to the first surface.

According to an exemplary embodiment, the second optical member (eg, the second optical member 34 shown in FIG. 2 ) linearly polarizes the illumination light emitted from the light source unit (eg, the light source unit 31 shown in FIG. 2 ). 1 polarizing plate (eg, the first polarizing plate 340 illustrated in FIG. 12B ) and a shielding film (eg, the shielding film illustrated in FIG. 12A ) attached to the first polarizing plate (eg, the first polarizing plate 340 illustrated in FIG. 12B ) (342)).

According to one embodiment, the shielding film (eg, the shielding film 342 illustrated in FIG. 12A ) is formed by the central overlap of the illumination light illuminated by the plurality of light emitting elements (eg, the light emitting element 3110 illustrated in FIG. 11 ). and the first portion for preventing image damage, and the first portion may include concentric circle portions (eg, concentric circle portions 3421 illustrated in FIG. 12A ).

According to one embodiment, the shielding film (eg, the shielding film 342 illustrated in FIG. 12A ) is the light emitting element (eg, the light emitting element 3110 illustrated in FIG. 11 ) in order to shield the light going straight from the center. It may further include a ring-shaped portion spaced apart from the concentric circle portion and disposed concentrically with the concentric circle portion (eg, a ring-shaped portion 3422 shown in FIG. 12A ).

According to one embodiment, the shield (eg, the shield 342 illustrated in FIG. 12A ) may include an opening (eg, the opening 3423 illustrated in FIG. 12A ) formed between the concentric circle portion and the ring-shaped portion. .

According to one embodiment, the opening (eg, opening 3423 shown in FIG. 12A ) may be approximately ring-shaped.

According to an embodiment, an indication target (eg, the indication target 38 illustrated in FIG. 2 ) may be further disposed on the main body housing (eg, the main body housing 22 illustrated in FIG. 1 ).

According to an embodiment, the indication target (eg, the indication target 38 shown in FIG. 2 ) may include a plurality of first display target marks (eg, the first display target mark (eg, the first display target mark ( ) shown in FIG. 14A ) along the outer circumferential direction). 3801) is formed, and a second surface opposite to the first surface, on which a plurality of second display target marks are formed along the outer circumferential direction, wherein the first display target mark and the second display target mark are included. The mark (eg, the second display target mark 3802 illustrated in FIG. 14A ) may be symmetrical.

According to one embodiment, an indication target (eg, the indication target 38 shown in FIG. 2 ) is rotatable between the body housing (eg, the body housing 22 shown in FIG. 1 ) and the holder part. can be tightly coupled.

According to one embodiment, the body housing (eg, the body housing 22 shown in FIG. 1 ) is coaxial with the optical axis of a camera included in the external electronic device (eg, the electronic device 10 shown in FIG. 1 ). It further includes a holder part (eg, the holder part 37 shown in FIG. 2) for being coupled to a pair of holders (eg, the holder 371 shown in FIG. 2) disposed to face each other. , an elastic body providing a force in a direction to bring the pair of holders closer to each other (eg, the elastic body 372 shown in FIG. 10D )) and the pair of holders to the main body housing (eg, the body shown in FIG. 1 ) It may include a coupling plate (eg, coupling plate 373 shown in FIG. 1) for fastening to the housing 22).

According to one embodiment, an eye examination apparatus (eg, the eye examination apparatus 20 illustrated in FIG. 1 ) includes a housing (eg, the housing 23 illustrated in FIG. 1 ) and an optical system disposed in the housing. and the optical system includes a light source unit for emitting light (eg, the light source unit 31 shown in FIG. 2), and a lens unit for condensing the illuminated illumination light from the light source unit (eg, the light source unit 31 shown in FIG. 2). Example: the lens unit 33 shown in FIG. 2), a portion of the illumination light is reflected toward the lens unit (eg, the lens unit 33 shown in FIG. 2), and the lens unit (eg shown in FIG. 2) a first optical member (eg, the first optical member 32 shown in FIG. 2) and the light source unit (eg, the light source unit 31 shown in FIG. 2) for passing the image light emitted from the lens unit 33) ) and the first optical member (eg, the first optical member 32 shown in FIG. 2 ), and the illumination light is disposed between the first optical member (eg, the first optical member 32 shown in FIG. 2 ) )) may include a second optical member (eg, the second optical member 34 shown in FIG. 2 ) including a first portion that prevents an image from being formed.

According to one embodiment, the second optical member (eg, the second optical member 34 shown in FIG. 2) is a first polarizing plate that linearly polarizes the illumination light (eg, the first polarizing plate 340 shown in FIG. 12B) and a shielding film (eg, a shielding film 342 illustrated in FIG. 12A ) attached to the first polarizing plate (eg, the first polarizing plate 340 illustrated in FIG. 12B ).

According to one embodiment, the shielding film (eg, the shielding film 342 illustrated in FIG. 12A ) is formed by the central overlap of the illumination light illuminated by the plurality of light emitting elements (eg, the light emitting element 3110 illustrated in FIG. 11 ). and the portion for preventing image damage, and the first portion may include concentric circle portions (eg, concentric circle portions 3421 shown in FIG. 14A ).

According to one embodiment, the shielding film (eg, the shielding film 342 illustrated in FIG. 12A ) is the light emitting element (eg, the light emitting element 3110 illustrated in FIG. 11 ) in order to shield the light going straight from the center. It may further include a ring-shaped portion (eg, ring-shaped portion 3422 illustrated in FIG. 14A ) spaced apart from the concentric circle portion (eg, the concentric portion 3421 illustrated in FIG. 14A ) and disposed concentrically with the concentric portion. .

According to one embodiment, the shielding film (eg, the shielding film 342 illustrated in FIG. 12A ) includes an opening (eg, the opening 3423 illustrated in FIG. 14A ) formed between the concentric circle portion and the ring-shaped portion, wherein the The opening may be approximately ring-shaped.

Various embodiments of the present disclosure disclosed in the present specification and drawings are merely presented as specific examples to easily explain the technical content of the present disclosure and help the understanding of the present disclosure, and are not intended to limit the scope of the present disclosure. Therefore, the scope of the present disclosure should be construed as including all changes or modifications derived from the technical spirit of the present disclosure in addition to the embodiments disclosed herein as being included in the scope of the present disclosure.

Claims (20)

In the eye examination apparatus,
a housing including a grip housing and a body housing extending in a perpendicular direction from the grip housing, the housing being optically coupled to a camera of an external electronic device; and
An optical system disposed in the housing,
the optical system
a light source unit disposed on the grip housing and illuminating light;
a lens unit disposed in the body housing and condensing the illumination light emitted from the light source unit;
A first optical member disposed between the body housing and the grip housing, reflecting a portion of the illumination light emitted from the light source unit toward the lens unit, and passing the image light emitted from the lens unit toward the camera of the external electronic device. ; and
and a second optical member disposed between the light source unit and the first optical member, the second optical member including a first portion for preventing the illumination light emitted from the light source unit from forming an image on the first optical member. According to claim 1, wherein the light source unit
a first circuit board including a first surface facing the first optical member and a second surface opposite to the first surface; and
It includes a plurality of light emitting devices disposed on the first surface,
The plurality of light emitting devices are arranged at equal intervals along an outer circumferential direction of the first surface. The eye examination apparatus according to claim 2, wherein the plurality of light emitting elements are symmetrically arranged vertically and horizontally when viewed from the first surface. The eye examination apparatus according to claim 3, wherein 6 to 10 of the plurality of light emitting elements are disposed. The eye examination apparatus according to claim 2, wherein at least one infrared emitter is further disposed between the plurality of light emitting elements. The eye examination apparatus of claim 1, wherein the first optical member is a beam splitter and is inclined at an angle of 35 degrees to 55 degrees with respect to the first surface. According to claim 1, wherein the second optical member
a first polarizing plate for linearly polarizing the illumination light emitted from the light source unit; and
An eye examination apparatus including a shielding film attached to the first polarizing plate. The method of claim 7, wherein the shielding
and the first portion for preventing image damage by central overlap of the illumination light illuminated by the plurality of light emitting elements, wherein the first portion includes concentric circles. The method of claim 8, wherein the shielding
The eye examination apparatus further comprising a ring-shaped portion spaced apart from the concentric circle portion in order to shield the straight light from the center of each light emitting element, and arranged concentrically with the concentric circle portion. The method of claim 9, wherein the shielding
and an opening formed between the concentric circle portion and the ring-shaped portion. 11. The eye examination apparatus of claim 10, wherein the opening is substantially ring-shaped. The apparatus of claim 1, wherein an indication target is further disposed in the main housing. The method of claim 12, wherein the indication target is
a first surface on which a plurality of first display target marks are formed along an outer circumferential direction; and
a second surface opposite to the first surface and having a plurality of second display target marks formed along the outer circumferential direction;
and the first target mark and the second target mark are symmetrical. The eye examination apparatus according to claim 12, wherein the indication target is rotatably coupled between the main body housing and the holder part. According to claim 1, wherein the main body housing further comprises a holder for coaxially coupled to the optical axis of the camera included in the external electronic device,
the holder part
a pair of holders facing each other;
an elastic body providing a force in a direction to bring the pair of holders closer to each other; and
and a coupling plate for fastening the pair of holders to the body housing. In the eye examination apparatus,
housing; and
An optical system disposed in the housing,
the optical system
a light source for emitting light;
a lens unit condensing the illuminated illumination light from the light source unit;
a first optical member reflecting a portion of the illumination light toward the lens unit and passing the image light emitted from the lens unit; and
and a second optical member disposed between the light source unit and the first optical member, the second optical member including a first portion for preventing the illuminating light from forming an image on the first optical member. The method of claim 16, wherein the second optical member
a first polarizing plate for linearly polarizing the illumination light; and
An eye examination apparatus including a shielding film attached to the first polarizing plate. The method of claim 17, wherein the shielding
and the portion for preventing image damage by central overlap of the illumination light illuminated by the plurality of light emitting elements, and wherein the first portion includes concentric circles. The method of claim 18, wherein the shielding
The eye examination apparatus further comprising a ring-shaped portion spaced apart from the concentric circle portion in order to shield the straight light from the center of each light emitting element, and arranged concentrically with the concentric circle portion. The method of claim 19, wherein the shielding
and an opening formed between the concentric circle portion and the ring-shaped portion, wherein the opening is substantially ring-shaped.

Images