KR102409008B1 - Light radiating and receiving assembly and biometer having the same - Google Patents

Abstract

Disclosed are a light-emitting and light-receiving assembly capable of stably and precisely controlling light-emitting and light-receiving angles, and a biometer having the same. The light-emitting and light-receiving assembly is mounted at a predetermined distance from the biometer body frame 200, and includes a tilting block 70 in the shape of a block extending in the first axis direction and the second axis direction; One end of the tilting block 70 is fitted into a reference groove 72 formed at the reference position C, so that the tilting block 70 is pivotally tilted around the reference position C, and the other end is a reference height adjustment unit 60 fixed to the biometer body frame 200; One end is slidably fitted into the first axis guide groove 74 formed to extend in the first axis direction at the other end of the tilting block 70, and the other end is fixed to the biometer body frame 200, a first shaft height adjustment unit 60a whose height is adjusted; a second axis height adjusting unit 60b having one end supporting one end of the tilting block 70 in the second axis direction, the other end being fixed to the biometer body frame 200, the height of which is adjusted; More than fixed springs (62a, 62b); and a light emitting and light receiving unit 80 .

Description

Light radiating and receiving assembly and biometer having same

The present invention relates to a light-emitting and light-receiving assembly and a biometer having the same, and more particularly, to a light-emitting and light-receiving assembly capable of stably and precisely controlling a light emission and light receiving angle, and a biometer having the same.

A biometer is a device that measures eye dimensions, such as the length of the eyeball from the cornea to the retina, the thickness of the cornea, and the anterior chamber depth using optical coherence tomography (OCT) technology. to be. Optical coherence tomography (OCT) transmits measurement light to an inspection object, detects reflected light (scattered light) reflected from the interior and each tomography of the inspection object, and performs tomography of the interior of the inspection object.

1 is a view for explaining the principle of examining an eyeball using a conventional biometer. 1, the biometer includes a light source 10, a beam splitter 20, a beam splitter, a coupler, a reference mirror 30, a reference mirror, a light emitting and receiving assembly 50, and a photodetector 40, Photo Detector). The light source 10 generates the measurement light L incident into the eyeball 5 . The beam splitter 20 splits the measurement light L into a reference light R and a measurement light L, irradiates the reference light R with the reference mirror 30, and emits and receives the measurement light L The eye (5) is irradiated through the assembly (50). When the measurement light L is irradiated to the eyeball 5 , the measurement light L is scattered and reflected in each layer of the eyeball 5 to generate a fine signal light S. The signal light S generated by the eyeball 5 and received by the light emitting and light receiving assembly 50 and the reference light R reflected from the reference mirror 30 are superimposed by the beam splitter 20, and the interference light (interference) light, I), and the generated interference light I is detected by the photodetector 40 .

In the biometer, a device for irradiating the measurement light (L) generated by the light source (10) and passing through the beam splitter (20) to the eyeball (5) and receiving the signal light (S) reflected from the eyeball (5) again is called a light radiating and receiving assembly (50, Light radiating and receiving assembly). The light emitting and receiving assembly 50 emits the measurement light L to the eyeball 5 and receives the signal light S reflected from the eyeball 5 while minimizing light loss, the beam splitter 20 It should be precisely aligned with respect to the body of the biometer including the back.

Conventionally, while changing the tilting angle of the light emitting and receiving assembly 50 with respect to the biometer body, the intensity of the signal light S is detected, and the light emitting and receiving assembly is located at the position where the intensity of the signal light S is greatest. 50 was fixed, so that the light emitting and light receiving assembly 50 was aligned. For example, the operator adjusts the tilting angle of the light emitting and receiving assembly 50 by hand and fixing the position of the light emitting and receiving assembly 50 with a bolt or the like to align the light emitting and receiving assembly 50 . However, in this alignment method, it is difficult to precisely and stably align the tilting angle of the light emitting and receiving assembly 50 . In addition, the conventional structure has a disadvantage in that it is difficult to precisely align the tilting directions of the light-emitting and light-receiving assemblies according to processing or assembly tolerances of related parts, resulting in a large amount of light loss.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light emitting and light receiving assembly capable of stably and precisely controlling light emission and light receiving angles, and a biometer having the same.

Another object of the present invention is to provide a light emitting and light receiving assembly capable of reducing light loss of signal light reflected from an eyeball, and a biometer having the same.

In order to achieve the above object, the present invention provides a tilting block 70 in the form of a block, which is mounted to be spaced apart from the biometer body frame 200 by a predetermined distance and extends in the first and second axial directions; One end of the tilting block 70 is fitted into a reference groove 72 formed at the reference position C, so that the tilting block 70 is pivotally tilted around the reference position C, and the other end is a reference height adjustment unit 60 fixed to the biometer body frame 200; One end is slidably fitted into the first axis guide groove 74 formed to extend in the first axis direction at the other end of the tilting block 70, and the other end is fixed to the biometer body frame 200, a first shaft height adjustment unit 60a whose height is adjusted; a second axis height adjusting unit 60b having one end supporting one end of the tilting block 70 in the second axis direction, the other end being fixed to the biometer body frame 200, the height of which is adjusted; One end is fixed to the tilting block 70, the other end is fixed to the biometer body frame 200, one or more fixing springs (62a, 62b) for attaching the tilting block 70 to the frame 200 direction; and a light emitting and receiving unit 80 mounted on the tilting block 70 to guide the measurement light generated by the biometer body to the eyeball and receive the signal light generated by reflecting the measurement light from the eyeball. (50) is provided.

The present invention also includes a light source 10 for generating a measurement light incident to the measurement object; a beam splitter 20 for splitting the measurement light into a reference light and a measurement light; a reference mirror 30 reflecting the reference light; the light emitting and receiving assembly 50 for guiding the measurement light to a measurement target and receiving a signal light generated by reflecting the measurement light from the measurement target; and a photodetector 40 for detecting interference light generated by overlapping the signal light generated by the measurement light reflected from the measurement target and the reference light reflected from the reference mirror.

The light-emitting and light-receiving assembly and the biometer having the same according to the present invention can reduce light loss of signal light reflected from the eyeball by stably and precisely controlling the light-emitting and light-receiving angles.

1 is a view for explaining the principle of examining the eyeball using a conventional biometer.
2 and 3 are bottom and top perspective views of the light emitting and receiving assembly 50 according to an embodiment of the present invention.
4 is a partial cross-sectional view in the x-axis direction of the light emitting and receiving assembly 50 according to an embodiment of the present invention.
5 is a partial cross-sectional view showing an internal structure of a light emitting and receiving assembly 50 according to an embodiment of the present invention.
6 is a view showing the configuration of a biometer having a light emitting and receiving assembly 50 according to the present invention.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail. In the accompanying drawings, the same reference numerals are assigned to components performing the same or similar functions as in the prior art. In addition, although the illustrated directions are described as up, down, left, right, etc., the actual device direction is not limited thereto, and the first axis and the second axis represent two axes that are not identical to each other.

2 and 3 are bottom and top perspective views of the light emitting and receiving assembly 50 according to an embodiment of the present invention. 2 and 3, the light emitting and receiving assembly 50 according to the present invention includes a tilting block 70, a reference height adjustment unit 60, a first axis height adjustment unit 60a, and a second axis height. It includes an adjustment unit 60b, one or more fixing springs 62a, 62b, and a light-emitting and light-receiving unit 80 .

The tilting block 70 is mounted to be spaced apart from the biometer body frame 200 by a predetermined distance, and is a block-shaped support extending in the first axis direction and the second axis direction. It has a structure in which it is rotated in a hinged manner, specifically, it is tilted. 2 and 3 , the first axis extends from the reference position C in the x-axis direction of the Cartesian coordinate system, and the second axis extends from the reference position C in the y-axis direction of the Cartesian coordinate system, and is perpendicular to each other. can be in a relationship

4 is a partial cross-sectional view in the x-axis direction of the light emitting and receiving assembly 50 according to an embodiment of the present invention. 2 to 4, a reference groove 72 is formed at one end of the tilting block 70, specifically, at the reference position C, and a reference height adjustment unit 60 is formed in the reference groove 72. ) is fitted, and the tilting block 70 can be tilted (rotated) in a pivotal manner about the reference position C. For example, the reference groove 72 is a semi-circle or cone-shaped groove, and one end of the reference height adjustment unit 60 is a semi-circle or cone-shaped protrusion fitted into the reference groove 72, and the tilting block ( 70) is inserted into one end of the reference height adjustment unit 60, it can be pivotally rotated about the reference position (C). One end of the reference height adjustment unit 60 is tiltably fixed to the reference groove 72 of the tilting block 70 , and the other end of the reference height adjustment unit 60 is fixed to the biometer body frame 200 . And, if necessary, the height of the reference height adjustment unit 60 is adjusted, so that the height of the reference position C can be adjusted. For example, as specifically shown in FIG. 4 , a threaded part 68 is formed on the other end of the reference height adjustment part 60 , and a nut part 202 is formed on the biometer body frame 200 . and the screw thread portion 68 and the nut portion 102 are screwed together, and when the reference height adjustment portion 60 is rotated once, the reference height adjustment portion 60 is screwed together by the screw pitch. can rise or fall.

A first axis guide groove 74 formed to extend in the first axis direction is formed at the other end of the tilting block 70 . One end of the first axis height adjustment unit 60a is slidably fitted into the first axis guide groove 74 , and the other end of the first axis height adjustment unit 60a has a biometer body frame 200 . is fixed on The height of the first shaft height adjusting part 60a is adjusted, so that the height of the first shaft guide groove 74 can be adjusted. Accordingly, the tilting block 70 includes the reference height adjustment unit 60 supporting the reference position C of the tilting block 70 and the first axis guide groove 74 supporting the first axis guide groove 74 of the tilting block 70 . It is supported by the shaft height adjustment unit (60a). Since the reference position C is adjusted and fixed in advance, when the height of the first shaft height adjustment part 60a is increased or decreased, the first shaft guide groove 74 is moved to the first shaft height adjustment part 60a. ) is inserted into the sliding movement, and the first axis of the tilting block 70 is inclined in the height direction (z direction) around the reference position C (see arrows a in FIGS. 2 and 3 ). That is, the moving direction of the tilting block 70 is guided by the first axis guide groove 74 , and the tilting block 70 is rotated in a hinge manner in a direction perpendicular to the first axis. Accordingly, when the tilting block 70 is tilted (aligned), the movement is controlled in a constant direction by the first axis guide groove 74 at all times. The height adjustment of the first shaft height adjustment part 60a may also be performed by screwing the screw thread part 68 and the nut part 202 in the same form as the reference height adjustment part 60 .

At one end of the tilting block 70, preferably, on the first axis of the tilting block 70, one end is fixed to the tilting block 70, and the other end is fixed to the biometer body frame 200, A first fixing spring 62a for adhering the tilting block 70 in the direction of the frame 200 may be mounted. Since the force pulling the tilting block 70 in the direction of the frame 200 is always acting by the first fixing spring 62a, when the height of the first shaft height adjustment unit 60a is adjusted, the tilting block 70 ) is moved upward or downward in a state in close contact with the first axis height adjustment unit 60a (that is, tension is maintained), so there is no need to perform additional position fixing work after tilting (alignment) is completed, and external shock Even if this occurs, the tilting (alignment) position does not change. If the reference height adjustment unit 60 is not fixed to the reference position C, or the relative position of the first axis height adjustment unit 60a is not guided by the first axis guide groove 74, tilting (alignment) ), it is difficult to adjust the tilting direction, and the tilting position (alignment) may be changed by an external impact, so additional fixing work is required after tilting (alignment) is completed.

Another end of the tilting block 70, specifically, one end in the second axis direction is supported by the second axis height adjustment unit 60b. That is, one end of the second axis height adjusting unit 60b supports the other end of the tilting block 70 , and the other end of the second axis height adjusting unit 60b is fixed to the biometer body frame 200 . do. The height of the second shaft height adjusting unit 60b is adjusted, so that the height of another end of the tilting block 70 can be adjusted. If necessary, a second shaft groove 76 is formed in the tilting block 70 so that one end of the second shaft height adjustment part 60b is movable, preferably, it is fitted so as to be movable in the second shaft direction. It is preferable to be Accordingly, the tilting block 70 includes a reference height adjustment unit 60 supporting the reference position C of the tilting block 70 and a second axis height adjustment unit supporting another end of the tilting block 70 . (60b) is supported. Since the reference position (C) is fixed, when the height of the second axis height adjustment unit 60b increases or decreases, the second axis of the tilting block 70 moves in the height direction ( z direction) (see arrow b in FIGS. 2 and 3). That is, the tilting block 70 is rotated in a hinged manner based on the first axis. Accordingly, when the tilting block 70 is tilted (aligned), the movement of the tilting block 70 can be controlled in a constant direction at all times. The height adjustment of the second shaft height adjustment part 60b may also be performed by screwing the screw thread part 68 and the nut part 202 in the same form as the reference height adjustment part 60 .

At the other end of the tilting block 70, preferably, on the second axis of the tilting block 70, one end is fixed to the tilting block 70, and the other end is fixed to the biometer body frame 200, , a second fixing spring 62b for adhering the tilting block 70 in the direction of the frame 200 may be mounted. The second fixing spring 62b is on the same principle as the first fixing spring 62a, and when the height of the second axis height adjustment unit 60b is adjusted, the tilting block 70 moves to the second axis height adjustment unit ( 60b) to move upwards or downwards in a state of being in close contact. 2 and 3 , in the tilting block 70 of the light emitting and receiving assembly 50 according to the present invention, the first axis is tilted with the second axis as the rotation axis, and then the second axis rotates the first axis as the rotation axis. Since it is tilted, the tilting angle is stable and precisely controlled.

The tilting block 70 is equipped with a light emitting and receiving unit 80 for guiding the measurement light generated from the biometer body to the eyeball and receiving the signal light generated by reflecting the measurement light from the eyeball. In the light emitting and light receiving assembly 50 according to the present invention, if necessary, the tilting block 70 includes a center moving unit 90 for adjusting the horizontal position of the light emitting and light receiving unit 80 and/or the The inclination adjustment unit 100 for further adjusting the inclination of the light emitting and light receiving unit 80 may be further included. 5 is a partial cross-sectional view showing the internal structure of the light emitting and receiving assembly 50 according to an embodiment of the present invention. 2, 3, and 5, the measurement light generated from the light source 10 of the biometer body and passed through the beam splitter 20 (refer to FIG. 6) passes through a predetermined optical system to the tilting block 70 It is introduced into the light-emitting and light-receiving unit 80 through the formed through-hole 78, is focused by the focusing lens 82 in the light-emitting and light receiving unit 80 as necessary, and through the optical fiber 84 that emits the measurement light to the eyeball. is released as Similarly, the signal light generated by reflecting the measurement light from the eye is introduced into the light emitting and receiving unit 80 through the optical fiber 84, and through the through hole 78 formed in the tilting block 70, the beam splitter of the biometer body (20, see Fig. 6).

The center moving unit 90 is for adjusting the horizontal position of the light emitting and light receiving unit 80 , and is mounted on the tilting block 70 and includes a center moving unit housing 92 having an internal moving space, and the center moving unit Located in the housing 92, the center moving block 94 to which the light emitting and light receiving unit 80 is mounted, and the center moving unit housing 92 are mounted to adjust their position in the inner moving space of the housing 92, the center moving unit housing and one or more positioning members 96 for adjusting the position of the center moving block 94 within the inner moving space of 92 . 2 , 3 and 5 , the center moving unit housing 92 may have a cylindrical shape extending in the vertical direction, and the center moving block 94 is located inside the center moving unit housing 92 . It may have a cylindrical shape positioned in space, and the position adjusting member 96 penetrates through the center moving unit housing 92 and extends into the inner space, and is screwed to the center moving unit housing 92 to adjust the position. When the member 96 is rotated, it advances or retreats into the inner space of the center moving unit housing 92 , and one or more, preferably three, set screws arranged at an angle of 120 degrees each for pushing and fixing the center moving block 94 . (headless bolt). Preferably, the center moving block 94 has a tapered surface 94a whose diameter becomes smaller in the upward direction, and the positioning member 96 pushes the tapered surface 94a to push the center moving block ( 94) adjust the position. As such, when the center moving block 94 has a tapered structure, when the position adjusting member 96 pushes and fixes the center moving block 94, the center moving block 94 is brought into close contact with the floor ( Since it is possible to maintain verticality (a force is applied in the downward direction), it is possible to maintain the tilting angle (alignment) by the tilting block 70 .

Therefore, by using a model eye in the form of a mirror, regardless of the optical center, the tilting block 70 is first tilted to a required angle to align, and then the center moving unit 90 is adjusted to complete the alignment. The horizontal position of the light-emitting and light-receiving unit 80 may be adjusted, ie, moved to a measurement center position. In a general alignment method, the tilting block is moved by hand to fix it at an approximate central position, and then alignment is performed by tilting the tilting block. On the other hand, according to the present invention, the tilting and positioning of the light emitting and light receiving unit 80 is precisely performed.

The inclination adjustment unit 100 is for further adjusting the inclination of the light emitting and light receiving unit 80 , and is located in the center moving unit 90 , specifically, the center moving block 94 of the center moving unit 90 . It may be mounted or, if there is no center moving part 90 , it may be directly mounted on the tilting block 70 .

The tilt control unit 100 is mounted on the center moving block 94 of the center moving unit 90 and is located in the tilt control unit housing 102 and the tilt control unit housing 102 having an internal moving space, The light emitting and light receiving unit 80 is mounted on one end, and the angle adjusting block 104 for which the inclination is adjusted and the tilt adjusting unit housing 102 are mounted to adjust their position in the internal movement space, the tilt adjusting unit housing ( one or more angle adjustment members 106 for fixing the position of the angle adjustment block 104 within the inner moving space of 102 . As shown in FIGS. 2, 3 and 5 , the tilt control unit housing 102 may have a cylindrical shape extending in a vertical direction, and the angle control block 104 is located inside the tilt control unit housing 102 . It may have a hemispherical shape located in the space, and the angle adjustment member 106 penetrates the tilt adjustment unit housing 102 and extends into the inner space, and is screwed to the tilt adjustment unit housing 102 . , When the angle adjustment member 106 is rotated, it advances or retreats into the inner space of the inclination adjustment unit housing 102, and may be one or more fixing screws (headless bolts) that push and fix the hemispherical surface of the angle adjustment block 104. .

When the inclination adjustment unit 100 is assembling the light emission and light receiving unit 80, when the optical axis of the focusing lens 82 of the light emission and light receiving unit 80 is shifted, excessive tilting of the tilting block 70 is required, In order to prevent (correct) this, the light emitting and receiving unit 80 is rotated and fixed (rotation structure of the light emitting and receiving unit 80), the light emitting and receiving unit 80 is positioned in the optical axis direction as much as possible, and then the tilting block 70 ) for precise alignment.

According to the present invention, two-axis tilting (alignment) is performed by the tilting block 70, two-axis movement (horizontal movement) is performed by the center moving unit 90, and the tilt adjustment unit 100 The light-emitting and light-receiving unit 80 is aligned by the 5-axis alignment structure in which the inclination is further adjusted by the . According to the present invention, the tilting position (trajectory) of the tilting block 70 can be kept constant, and at the absolute position of each axis, the pitch of the bolts used as the position adjusting member 96 and the angle adjusting member 106 ( Through the pitch) distance, the position and angle are adjusted, so the movement distance can be precisely adjusted, and early-in is easy.

6 is a view showing the configuration of a biometer including the light emitting and receiving assembly 50 according to the present invention. As shown in FIG. 6 , the biometer according to the present invention has substantially the same structure as the conventional biometer except for having the light emitting and light receiving assembly 50 of the present invention, and includes a light source 10 and a beam a splitter 20 , a reference mirror 30 , a light emitting and receiving assembly 50 , and a photodetector 40 . The light source 10 generates a measurement light L incident to a measurement target, for example, the eyeball 5 , and may be, for example, a superluminescent diode (SLD). The measurement light L used for optical coherence tomography (OCT) is usually broadband low-coherence light having a short coherence distance, for example, near-infrared light having a wavelength of 750 nm to 1500 nm. The beam splitter 20 splits the measurement light L into a reference light R and a measurement light L, irradiates the reference light R with the reference mirror 30, and emits and receives the measurement light L The eye (5) is irradiated through the assembly (50). The beam splitter 20 may split the measurement light L into, for example, a reference light R and a measurement light L having an intensity of 50:50. The reference light R is reflected from the reference mirror 30 and transmitted to the beam splitter 20 again. The measurement light L irradiated to the inside of the eyeball 5 is scattered and reflected in each layer of the eyeball 5, specifically, at a position where the refractive index changes, thereby generating a fine signal light S. The signal light S generated by the eyeball 5 and received by the light emitting and receiving assembly 50 and the reference light R reflected from the reference mirror 30 are overlapped by the beam splitter 20 to generate the interference light I and the generated interference light I is detected by the photodetector 40 . Since the beam splitter 23 also serves to overlap the reference light R and the signal light S, it is also referred to as a beam coupler. As the reference mirror 30 moves away from the beam splitter 20 , the optical path length (OPL) of the reference light R increases. When the signal light (S) reflected from each layer of the eyeball (5) overlaps the reference light (R) that has moved the optical path of the same length, the signal light (S) and the reference light (R) interfere and the interference light ( I) A signal is generated. Therefore, it is possible to detect the position where the signal light S is generated in the eyeball from the position or movement amount of the reference mirror 30 where the signal of the interference light I is generated, and from this, distance information between each layer inside the eyeball can get

The present invention has been described above with reference to the accompanying drawings and exemplary embodiments, but the present invention is not limited to the contents shown in the drawings and the above-described embodiments. Reference numerals are indicated in the following claims to aid understanding, but the scope of the following claims is not limited to the contents shown in the reference signs and drawings, and should be construed to encompass all modifications, equivalent configurations and functions of the exemplary embodiment. do.

Claims (9)

a tilting block 70 in the form of a block installed to be spaced apart from the biometer body frame 200 by a predetermined distance and extending in the first axis direction and the second axis direction;
One end of the tilting block 70 is fitted into a reference groove 72 formed at the reference position C, so that the tilting block 70 is pivotally tilted around the reference position C, and the other end is a reference height adjustment unit 60 fixed to the biometer body frame 200;
One end is slidably fitted into the first axis guide groove 74 formed to extend in the first axis direction at the other end of the tilting block 70, and the other end is fixed to the biometer body frame 200, a first shaft height adjustment unit 60a whose height is adjusted;
a second axis height adjustment unit 60b having one end supporting one end of the tilting block 70 in the second axis direction, the other end being fixed to the biometer body frame 200, the height of which is adjusted;
One end is fixed to the tilting block 70, the other end is fixed to the biometer body frame 200, one or more fixing springs (62a, 62b) for bringing the tilting block 70 into close contact with the frame 200; and
A light emitting and receiving assembly ( 50). According to claim 1, When the height of the first shaft height adjustment portion (60a) increases or decreases, the first shaft height adjustment portion (60a) fitted in the first shaft guide groove (74) slides and moves, tilting The light emitting and receiving assembly (50), wherein the block (70) is hingedly rotated in a direction perpendicular to the first axis. According to claim 1, wherein a screw thread portion 68 is formed at the other end of the first shaft height adjustment portion (60a) and the second shaft height adjustment portion (60b), and a nut portion is formed on the biometer body frame (200). 202 is formed, and the screw thread portion 68 and the nut portion 102 are screwed together, and when the first shaft height adjustment portion 60a and the second shaft height adjustment portion 60b are rotated once, the screw The light-emitting and light-receiving assembly 50, wherein the first axis height adjustment unit 60a and the second axis height adjustment unit 60b rise or fall by a screw pitch by coupling. According to claim 1, wherein the first fixing spring (62a, 62b) is fixed to one end on the first axis of the tilting block (70) and the other end is fixed to the biometer body frame (200) 62a) and a second fixing spring 62b having one end fixed on the second axis of the tilting block 70 and the other end fixed to the biometer body frame 200, the light emitting and receiving assembly (50). According to claim 1, The center moving unit housing (92) is mounted on the tilting block (70) having an inner moving space;
a center moving block 94 positioned in the center moving unit housing 92 and mounted with a light emitting and light receiving unit 80; and
One or more position adjustments for adjusting the position of the center moving block 94 in the inner moving space of the center moving unit housing 92 by being mounted to adjust the position in the inner moving space of the center moving unit housing 92 . A light-emitting and light-receiving assembly (50) comprising a member (96) and further comprising a center moving portion (90) for adjusting a horizontal position of the light-emitting and light-receiving portion (80). According to claim 5, wherein the center moving unit housing (92) may have a cylindrical shape extending in the vertical direction, the center moving block (94) is a cylindrical shape located in the inner space of the center moving unit housing (92) may have, and the position adjusting member 96 extends into the inner space through the center moving unit housing 92 and is screwed to the center moving unit housing 92 to rotate the position adjusting member 96 The light emitting and light receiving assembly 50, which is one or more fixing screws that advance or retreat into the inner space of the center moving unit housing 92 when it is lowered, and push and fix the center moving block 94. According to claim 6, wherein the center moving block (94) has a tapered surface (94a) that decreases in diameter in an upward direction, and the positioning member (96) pushes the tapered surface (94a) to push the center moving block ( adjusting the position of 94). According to claim 1, It is mounted on the tilting block 70, the tilt adjustment unit housing 102 having an internal movement space;
Located in the tilt control unit housing 102, the light emitting and light receiving unit 80 is mounted at one end, the angle adjustment block 104 to adjust the inclination; and
One or more angle adjustments for fixing the position of the angle adjustment block 104 in the internal movement space of the inclination adjustment unit housing 102 by being mounted to adjust the position within the internal movement space of the inclination adjustment unit housing 102 . Light-emitting and light-receiving assembly (50), further comprising a tilt adjustment unit (100) including a member (106). a light source 10 for generating measurement light incident to a measurement target;
a beam splitter 20 for splitting the measurement light into a reference light and a measurement light; a reference mirror 30 for reflecting the reference light;
a light emitting and receiving assembly 50 for guiding the measurement light to a measurement target and receiving a signal light generated by reflecting the measurement light from the measurement target; and
and a photodetector 40 for detecting the interference light generated by overlapping the signal light generated by the measurement light reflected from the measurement target and the reference light reflected from the reference mirror;
The light-emitting and light-receiving assembly 50 is mounted to be spaced apart from the biometer body frame 200 by a predetermined distance, and includes a tilting block 70 in the shape of a block extending in the first axis direction and the second axis direction;
One end of the tilting block 70 is fitted into a reference groove 72 formed at the reference position C, so that the tilting block 70 is pivotally tilted around the reference position C, and the other end is a reference height adjustment unit 60 fixed to the biometer body frame 200;
One end is slidably fitted into the first axis guide groove 74 formed to extend in the first axis direction at the other end of the tilting block 70, and the other end is fixed to the biometer body frame 200, a first shaft height adjustment unit 60a whose height is adjusted;
a second axis height adjustment unit 60b having one end supporting one end of the tilting block 70 in the second axis direction, the other end being fixed to the biometer body frame 200, the height of which is adjusted;
One end is fixed to the tilting block 70, the other end is fixed to the biometer body frame 200, one or more fixing springs (62a, 62b) for bringing the tilting block 70 into close contact with the frame 200; and
It is mounted on the tilting block 70, guides the measurement light generated from the biometer body to the eyeball, and includes a light emitting and light receiving unit 80 for receiving the signal light generated by reflecting the measurement light from the eye, the biometer .

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