KR102823509B1 - Measurement instrument of optical properties of VR or AR devices - Google Patents

Abstract

The present invention relates to an optical characteristic measuring device for a VR/AR device, comprising: a measurement target; a probe module including an image sensor; a relay module having one end coupled to an end of the probe module to form an optical path connected to the probe module and the other end spaced apart from the measurement target by a predetermined distance; and an operating unit coupled to the probe module and capable of manipulating the position and rotation angle of the probe module, wherein the probe module is positioned further away from the measurement target than the other end of the relay module.

Description

{Measurement instrument of optical properties of VR or AR devices}

The present invention relates to a device for measuring optical characteristics of a VR or AR device.

VR (Virtual Reality)/AR (Augmented Reality) devices use complex optical elements to implement enlarged virtual images on displays located very close to the human eye, which causes a decrease in resolution, severe distortion of the image, chromatic aberration, etc., and a decrease in brightness and color uniformity in the center and periphery of the image. VR/AR devices implement three-dimensional images using binocular parallax. FIGS. 3a to 3c are schematic diagrams showing the principles of VR devices that implement three-dimensional images using binocular parallax. FIGS. 3b and 3c are schematic diagrams showing the principles of VR devices that implement three-dimensional images using binocular parallax. FIGS. 3b and 3c are schematic diagrams showing the principles of VR devices that implement three-dimensional images using binocular parallax.

As shown in Figure 3c, in the case of a VR device, it can be seen that the image of the display located very close to the eyes is used as a convex lens to allow the user to view an enlarged erect image (virtual image) at a far distance.

For AR devices, more complex optical elements are used, but the principle of injecting light that is almost parallel to the human eye is the same. Figs. 4a and 4b are photographs of luminance and chromaticity measuring equipment for a flat display. Such existing luminance and chromaticity measuring equipment targets flat displays (TVs, monitors), and can measure for large and calibrated target distances. However, it is impossible to properly evaluate the optical characteristics (luminance, chromaticity, luminance uniformity, chromaticity uniformity, viewing angle, eyebox, stray light, etc.) and image quality (resolution, distortion, chromatic aberration, etc.) of VR/AR devices with existing measuring equipment.

VR/AR devices are designed for the human eye, so when measuring and evaluating, the characteristics of the human eye (pupil size, lens-pupil distance, center of eye rotation, field of view, etc.) must be considered. In order to position the measuring equipment where the human eye is, a small measuring unit (optical system) that can fit in a narrow space and perform off-axis measurements is required. In addition, when implementing optical images in a single measuring system, the structure becomes complex and the number of optical elements increases, which increases the potential for error. In addition, when confirming the measurement range using LED or laser irradiation, it is difficult to confirm the measurement location due to the internal reflection of the beam splitter and optical elements, and since the LED or laser must be turned off during measurement, it is impossible to confirm the measurement location. Therefore, the development of measuring equipment and measuring methods that can analyze the performance of VR/AR devices by enabling switching between the optical characteristic measurement mode and the image quality measurement mode of the VR/AR device was required.

Existing measuring devices have a problem in that the size of the probe causes it to collide with the side cover of the VR/AR device when rotating around the pivot point, which limits its rotation, and this limitation makes it difficult to quickly measure the optical characteristics of the VR/AR device.

Accordingly, the present invention aims to provide a device capable of easily and quickly measuring the optical characteristics of a VR/AR device without collision with the side cover of the VR/AR device by combining a bent periscope-shaped relay module with a probe module.

In order to achieve the above object, the present invention provides an optical characteristic measuring device for a VR/AR device, comprising: a measurement target; a probe module including an image sensor; a relay module having one end connected to an end of the probe module to form an optical path connected to the probe module and the other end spaced apart from the measurement target by a predetermined distance; and an operation unit disposed below the probe module and capable of manipulating the position and rotation angle of the probe module, wherein light from the measurement target is incident on the relay module.

In addition, the probe module includes a beam splitter, and the beam splitter provides an optical characteristic measurement device capable of separating light introduced through the probe module into transmitted light and reflected light.

In addition, the probe module includes an image quality analysis unit and an optical characteristic measurement unit, the image quality analysis unit includes the image sensor, the optical characteristic measurement unit is connected to a spectroradiometer, and an optical characteristic measurement device is provided in which the transmitted light is incident on the optical characteristic measurement unit and the reflected light is incident on the image quality analysis unit.

In addition, an optical characteristic measuring device is provided in which the cross-sectional area of the relay module is smaller than the cross-sectional area of the first probe.

Additionally, the relay module provides an optical characteristic measuring device including a bent shape.

In addition, the relay module includes a first horizontal module, a vertical module, and a second horizontal module that are connected to form an optical path, and an optical characteristic measuring device is provided in which one end of the first horizontal module is coupled with the first probe and an aperture is arranged at the end of the second horizontal module.

In addition, the second horizontal module and the probe module are parallel to each other, and an optical characteristic measuring device is provided in which a height at which the probe module is located is different from a height at which the measurement target is located.

In addition, the relay module further includes a first bend connecting the first horizontal module and the vertical module, and the first bend provides an optical characteristic measuring device that causes an optical path formed inside the first horizontal module and the vertical module to be bent.

In addition, the relay module further includes a second bend connecting the vertical module and the second horizontal module, and the second bend provides an optical characteristic measuring device that causes an optical path formed inside the second horizontal module and the vertical module to be bent.

In addition, the manipulation unit includes a three-axis position adjustment unit, and the three-axis position adjustment unit provides an optical characteristic measuring device capable of moving the probe module along directions of a first axis, a second axis, and a third axis that are orthogonal to each other.

In addition, the manipulation unit includes a two-axis rotation driving unit, and the two-axis rotation driving unit provides an optical characteristic measuring device capable of rotating the probe module about a first rotation axis and a second rotation axis that are orthogonal to each other.

In addition, the two-axis rotation driving unit includes a first rotation driving unit that rotates around the first rotation axis, and an optical characteristic measuring device is provided in which the other end of the relay module is disposed on the first rotation axis.

In addition, an optical characteristic measuring device is provided in which a horizontal rotating member is installed on the first rotating driving unit.

In addition, the horizontal rotation member includes a horizontal member and a pair of vertical members, and an optical characteristic measuring device coupled to the vertical members is provided at each end of the horizontal member.

In addition, an optical characteristic measuring device is provided in which the two-axis rotation driving unit includes a second rotation driving unit, the second rotation driving unit rotates around the second rotation axis, and the other end of the relay module is disposed on the second rotation axis.

In addition, an optical characteristic measuring device is provided in which a swing member is coupled to the second rotary driving member and the probe module is placed on the swing member.

In addition, the swing member includes a fixing member, and the fixing member is shaped in a ‘ㄷ’ or ‘U’ shape to provide an optical characteristic measuring device in which the probe module is arranged.

The optical characteristic measuring device according to the present invention has a relay module in the shape of a periscope bent at the end of the probe module, so that the probe module can rotate around the end of the relay module without colliding with the VR/AR device in a narrow space inside the side cover of the VR/AR device, thereby quickly and accurately measuring the optical characteristics of the VR/AR device.

Figure 1 shows the overall shape of a scientific characteristic measuring device according to the present invention.
Figure 2 shows an actual image of a scientific characteristic measurement device according to the present invention.
Figure 3 schematically illustrates the internal appearance of the probe module and relay module of the present invention.
Figure 4 illustrates a problem that occurs when measuring the optical characteristics of a VR/AR device in an existing invention.
Figure 5 is a top view showing the three-axis position control unit of the present invention.
FIG. 6 is a schematic diagram illustrating a probe module and a relay module coupled to a two-axis rotation driving unit as one embodiment according to the present invention.
Figure 7a illustrates the vertical member, the extension member, and the second rotation driving member of the present invention.
Figure 7b shows a compensation rail installed on a fixing member.
Figure 8 illustrates a method for correcting the position of a pivot point according to the present invention.

The invention described below can have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention described below to specific embodiments, and it should be understood that it includes all modifications, equivalents, or substitutes included in the spirit and scope of the technology described below.

FIG. 1 and FIG. 2 illustrate the configuration of an optical characteristic measuring device (10) according to one embodiment of the present invention. Referring to FIG. 1, the optical characteristic measuring device (10) may include a probe module (100), a relay module (200), and an operation unit (300).

The probe module (100) can receive optical information of a VR or AR device acquired by the relay module (200) and transmit it to a spectroradiometer that measures optical characteristics and an image sensor that analyzes image quality.

Referring to FIG. 3, the probe module (100) may include a first lens unit (140), a beam splitter (110), an image quality analysis unit (120), and an optical characteristic measurement unit (130).

The first lens unit (140) is a place for adjusting the focus of light flowing from the relay module (100) to the probe module (100), and one or more lenses may be arranged. One or more lenses of the first lens unit (140) may be formed in an appropriate arrangement form so as to focus light on a beam splitter (110) arranged next to the first lens unit (140) on the light path.

The beam splitter (110) can split light passing through the first lens unit (140) into transmitted light and reflected light.

The reflected light reflected from the beam splitter (110) can be introduced into the image quality analysis unit (120), and the transmitted light passing through the beam splitter (110) can be introduced into the optical characteristic measurement unit (130).

The image quality analysis unit (120) may include a camera module (not shown), a bending mirror (121), and an image sensor (122).

A camera module (not shown) enables direct monitoring of reflected light entering the image quality analysis unit (120) from outside the device, and light passing through the camera module can enter the image sensor.

The bending mirror (121) can bend the path of light entering the image quality analysis unit (120) and direct it to the image sensor (122).

The image sensor (122) can measure image quality such as focal length and Michelson contrast by obtaining a measurement image (checkerboard image, stripe image with specific spatial frequency, image of evenly spaced points for distortion measurement) displayed on the display of the measurement target.

The optical characteristic measurement unit (130) receives light transmitted through the beam splitter (110) and can connect the received light to a spectroradiometer through an optical fiber.

The optical characteristic measurement unit (130) may include a second lens unit (131) and an optical fiber (132).

The second lens unit (131) may be a focusing lens for focusing the transmitted light passing through the beam splitter (110) onto an optical fiber.

A spectroradiometer can measure the brightness, chromaticity, brightness uniformity, chromaticity uniformity, field of view, eyebox, stray light, etc. of light incident through an optical fiber.

Referring to FIG. 4, since the probe module (100) includes various components such as a beam splitter (110), a first lens unit (140) for focusing light onto the beam splitter (110), etc., it is difficult to manufacture the probe module (100) in a small size. Due to the size of the probe module (100), when the probe module (100) is positioned adjacent to the lens of the VR/AR device to measure the optical characteristics and image quality of the VR/AR device, the rotation range of the probe module (100) is limited due to collision with the side cover formed on the VR/AR device, which may act as a factor that hinders the speed and accuracy of the measurement. Accordingly, the present invention combines a small relay module (200) including a bent shape to the probe module (100), and the probe module (100) can measure the optical characteristics and image quality of the VR/AR device at a position further away from the lens of the VR/AR device.

The relay module (200) is where light passing through the lens of the VR/AR device on the display first enters, and may be a module for transmitting the entered light to the probe module (100).

Referring to FIG. 3, one end of the relay module (200) is connected to an end of the probe module (100), and an optical path can be formed through which light can travel from the relay module (200) to the probe module (100) so that light incident on the other end of the relay module (200) can be transmitted to the probe module (100).

An aperture (210) is arranged at the other end of the relay module (200) to control the amount of light entering from the lens of the VR/AR device. It may be advantageous for measuring optical characteristics if the other end of the relay module (200) is positioned at a distance of 5 mm to 30 mm, preferably 20 mm, from the lens of the VR/AR device.

The relay module (200) may be coupled to the end of the probe module (100) so as to extend along the length direction of the probe module (200) from the end of the probe module (100). When measuring the optical characteristics of a VR/AR device using only the probe module (100) without the relay module (200), the probe module (100) may collide with the face cover of the VR/AR device when rotating or moving by the operation unit (300), thereby limiting the movement and rotation. In this case, the end of the probe module (100) may not be positioned at a predetermined position in front of the lens of the VR/AR device, which may reduce the reliability of the measurement results.

The relay module (200) may include a first parallel portion (250), a bent portion (220), a vertical portion (260), and a second parallel portion (270).

The bent portion (220) may be formed in a ‘ㄱ’ shaped shape, and a flat mirror, a bending mirror, or a lens may be placed inside the bent portion (220) so that the light path can also be bent in an ‘ㄱ’ shaped shape.

The bend portion (220) may include a first bend portion (230) and a second bend portion (240).

The relay module (200) may include a first parallel portion (250), a first bent portion (230), a vertical portion (260), a second bent portion (240), and a second parallel portion (270), and the first parallel portion (250), the first bent portion (230), the vertical portion (260), the second bent portion (240), and the second parallel portion (270) may be arranged sequentially.

The first parallel portion (250) is coupled to the probe module (100) so as to extend from an end of the probe module (100), and the direction in which the first parallel portion (250) is arranged can be parallel to the direction in which the probe module (100) is arranged. One end of the first parallel portion (250) can be coupled to an end of the probe module (100), and the other end can be coupled to the first bent portion (230).

The first parallel portion (250) can be spaced apart from the lens of the VR/AR device by the length of the first parallel portion (250) along the longitudinal direction in which the first parallel portion (250) is positioned.

The vertical portion (260) has one end connected to the first bend portion (230) and the other end connected to the second bend portion (240) so as to connect the second parallel portion (270) and the first parallel portion (250) with an optical path.

The central axis of the vertical portion (260) and the central axis of the first parallel portion (250) are orthogonal to each other, and the central axis of the vertical portion (260) and the central axis of the second parallel portion (270) can be orthogonal to each other.

The vertical section (260) can be arranged so that the end of the probe module (100) is spaced apart from the lens of the VR/AR device by the length of the first vertical section (260) along the longitudinal direction in which the first vertical section (260) is arranged. In other words, the height at which the end of the probe module (100) is arranged and the height at which the lens of the VR/AR device is arranged can be different from each other.

The second parallel portion (270) may be positioned so that one end is connected to the second curved portion (240) and the other end is spaced apart from the lens of the VR/AR device by a predetermined distance. The second parallel portion (270) may be positioned parallel to the first parallel portion (250), and the probe module (100), the first parallel portion (250), and the second parallel portion (270) may all be positioned parallel.

The other end of the second parallel section (270) may include an aperture (210) to control the amount of incident light.

The manipulation unit (300) is placed below the probe module (100) and can manipulate the position and rotation angle of the probe module (100) according to manipulation. Since the relay module (200) is coupled to the probe module (100), the position and rotation angle of the relay module (200) can also be manipulated as the position and rotation angle of the probe module (100) are manipulated.

The operating unit (300) may include a three-axis position adjustment unit (310), a two-axis rotation driving unit (350), a horizontal rotation member (380), a swing member (390), and a correction member (400).

The three-axis position control unit (310) can move the positions of the probe module (100) and the relay module (200) along the axes of the first axis, the second axis, and the third axis that are orthogonal to each other according to the operation. The first axis and the second axis can mean a horizontal direction with respect to the ground, and the third axis can mean a vertical direction with respect to the ground.

Referring to FIG. 5, the three-axis position control unit (310) may include a first axis moving unit (320), a second axis moving unit (330), and a third axis moving unit (340).

The first axis moving part (320) may include a first axis rail (321) and a first stage (322).

A first axis rail groove (323) is formed on the longitudinal central axis of the first axis rail (321), and the lower part of the first stage (322) is coupled to the first axis rail groove (323), so that the first stage (322) can reciprocate in the first axial direction along the first axis rail groove (323) according to manipulation.

The second axis moving part (330) may include a second axis rail (331) and a second stage (332).

The second axis rail (331) can be formed on the upper surface of the first stage (322), and the second axis rail groove (333) is formed on the longitudinal central axis of the second axis rail (331), so that the lower part of the second stage (332) is coupled with the second axis rail groove (333), so that the second stage (332) can reciprocate in the second axial direction along the second axis rail groove (333) according to operation.

The third axis moving part (330) can be placed on the second stage (332).

In one embodiment, the third axis moving unit (330) may include a third axis rail (341), a second stage (342), and a moving member (343). The third axis rail (341) may be installed in a direction perpendicular to an upper surface of the second stage (332). The moving member (343) may be coupled with the third axis rail (341) and may move up and down along the longitudinal direction of the third axis rail (341). The third stage (343) may be coupled on the moving member (343), and a second axis rotation driving unit may be installed on the third stage (343).

The two-axis rotation driving unit (350) is placed above the three-axis position adjusting unit (310) and can be installed on the third stage (342). The two-axis rotation driving unit (350) can rotate the probe module (100) and the relay module (200) about the first and second rotation axes that are orthogonal to each other according to the operation, thereby manipulating the rotation angle.

Referring to FIG. 6, the two-axis rotation driving unit (350) may be configured to rotate the relay module (200) and the probe module (100) based on the central position of the aperture (210) or a position spaced 5 mm to 15 mm horizontally from the central position of the aperture (210).

The two-axis rotation drive unit (350) may include a first rotation drive unit (360) and a second rotation drive unit (360).

The first rotation driving unit (360) may be configured to drive the probe module (100) and the relay module (200) to rotate around the first rotation axis.

The first rotation driving unit (360) can be installed on the third stage (342).

A horizontal rotation member (380) in the shape of a ‘ㄷ’ can be installed on the first rotation driving unit (360). The horizontal rotation member (380) can rotate horizontally around the first rotation axis, which is an axis parallel to the third axis, according to the rotation driving of the first rotation driving unit (360).

The horizontal rotation member (380) includes a horizontal member (381) and a pair of vertical members (382), and the vertical members (382) can be respectively coupled to both longitudinal ends of the horizontal member (381).

The horizontal member (381) is horizontally arranged parallel to the upper surface of the third stage (342), and the center of the lower surface of the horizontal member (381) can be coupled with the first rotation driving unit (360). First rotation driving unit

A pair of vertical members (382) are respectively connected to each end of the horizontal member (381) and can be arranged in a direction perpendicular to the horizontal direction in which the horizontal member (381) is arranged.

A pair of second rotational driving members (370) may be symmetrically coupled to a pair of vertical members (382) on the inner or outer surface.

The rotation axis of the second rotation driving unit (370) may be a second rotation axis that is perpendicular to the first rotation axis of the first rotation driving unit (360).

A swing member (390) can be combined with the second rotary driving member (370).

The swing member (390) can rotate according to the rotational drive of the second rotational drive member (370).

The swing member (390) can connect a pair of symmetrically arranged second rotation driving members (370), and a probe module (100) can be installed at the center of the swing member (390).

The swing member (390) may include an extension member (391) and a fixing member (392).

Referring to FIG. 7a, the extension member (391) may be a member that is coupled with the second rotation driving member (370) and extends from the second rotation driving member (370) to be coupled with the fixing member (392).

The fixing member (392) is connected by being combined with a pair of symmetrically arranged extension members (391), and a flat surface with a predetermined width can be formed on the upper surface so that the probe module (100) can be fixed.

Referring to FIG. 7b, the mounting member (392) is formed in a ‘ㄷ’ or ‘U’ shape so that the center of the aperture (210) of the relay module (200) can be positioned on the rotation axes of the first rotation driving unit (360) and the second rotation driving unit (370), thereby allowing the mounting member (392) to be spaced apart from the second rotation driving unit (370) by a predetermined distance. A probe module (100) can be placed at the center of the upper surface of the ‘ㄷ’ or ‘U’ shape of the mounting member (392).

A correction member (400) may be placed between the fixing member (392) and the probe module (100).

The correction member (400) may be a member for correcting the position and angle on the mounting member (392) of the probe module (100).

The correction member (400) may include a correction rail (410), a position adjustment member (420), and an angle adjustment member (430).

The correction rail (410) can be installed at the center of the upper surface of the fixing member (392), and can guide the probe module (100) to move slightly forward or backward so that the center of the aperture (210) can be positioned on the rotational axis of the first rotational driving unit (360) and the second rotational driving unit (370).

The position adjustment member (420) is placed on the correction rail (410) and can move forward or backward along the correction rail (410).

A first knob (421) is installed in the position adjustment member (420), and when the first knob (421) is rotated in one direction, the position adjustment member (420) can move forward on the compensation rail (410) in proportion to the rotation angle of the first knob (421), and when the first knob (421) is rotated in another direction, the position adjustment member (420) can move backward on the compensation rail (410) in proportion to the rotation angle of the first knob (421).

The angle adjustment member (430) is placed between the position adjustment member (420) and the probe module (100) and can adjust the vertical angle of the probe module (100).

A second knob (431) is installed in the angle adjustment member (430), and when the second knob (431) is rotated in one direction, the probe module (100) can be rotated upward in proportion to the rotation angle, and when the second knob (431) is rotated in the other direction, the probe module (100) can be rotated downward in proportion to the rotation angle.

How to correct pivot point position

FIG. 8 discloses a method for correcting a pivot point position. Referring to FIG. 7 (a), θ represents a rotation angle of the probe with respect to a first rotation axis. a and a' represent vertical distances between the center of the entrance pupil in the lens of the VR/AR device and the lens of the VR/AR device at θ = 0 and θ = θ, respectively. When the probe rotates by an angle θ with respect to the first rotation axis, the distance z can be calculated using the following mathematical formula. The position of the rotation axis can be corrected using the calculated z value.

(a: vertical distance between the lens of the VR/AR device and the entrance pupil of the probe when the rotation angle of the probe is 0, a’: vertical distance between the lens of the VR/AR device and the entrance pupil of the probe when the rotation angle of the probe is θ)

Referring to (b) of Fig. 7, represents the rotation angle of the probe about the second rotation axis. b and b' are respectively = 0 and = Indicates the vertical distance between the center of the entrance pupil and the lens of the VR/AR device. The probe is rotated at an angle relative to the second rotation axis. If the rotation is as much as that, the distance y can be calculated using the mathematical formula below. The position of the rotation axis can be corrected using the calculated y value.

(b: vertical distance between the lens of the VR/AR device and the entrance pupil of the probe when the rotation angle about the second rotation axis of the probe is 0, b': rotation angle about the second rotation axis of the probe (vertical distance between the lens of the VR/AR device and the entrance pupil of the probe)

Although the present technology has been described through the above examples, the present technology is not limited thereto. The above examples may be modified or changed without departing from the spirit and scope of the present technology, and a person skilled in the art will recognize that such modifications and changes also belong to the present technology.

10: Device 100: Probe Module
110: Beam splitter 120: Image quality analysis unit
121: Banding mirror 122: Image sensor
130: Optical characteristic measurement section 131: Second lens section
132: Optical fiber 140: First lens section
200 : Relay module 210 : Aperture
220: bend 230: first bend
240: 2nd bend 250: 1st parallel section
260: vertical section 270: second parallel section
300: Operating unit 310: 3-axis position control unit
320: 1st axis moving part 321: 1st axis rail
322: Stage 1 330: Axis 2 moving part
331: 2nd axis rail 332: 2nd stage
340: Third axis moving part 341: Third axis rail
342: Stage 3 343: Absence of movement
350 : 2-axis rotary drive unit
360: 1st rotation drive unit 370: 2nd rotation drive unit
380: Horizontal rotation member 381: Horizontal member
382: Vertical member 390: Swing member
391: Extension member 392: Fixing member
400: Compensation member 410: Compensation rail
420: Position adjustment member 421: First knob
430: Angle adjustment member 431: Second knob

Claims (17)

In the optical characteristic measuring device of VR/AR device,
Measurement object;
Probe module with image sensor;
A relay module having one end connected to an end of the probe module to form an optical path connected to the probe module and the other end spaced apart from the measurement target by a predetermined distance; and
A manipulation unit is disposed at the bottom of the probe module and capable of manipulating the position and rotation angle of the probe module,
Light is incident on the above relay module from the measurement target,
The above operating unit includes a two-axis rotation drive unit,
The above two-axis rotation driving unit can rotate the probe module around a first rotation axis and a second rotation axis that are orthogonal to each other,
The above two-axis rotation driving unit includes a first rotation driving unit that rotates around the first rotation axis,
An optical characteristic measuring device in which the other end of the relay module is placed on the first rotation axis. In paragraph 1,
The above probe module includes a beam splitter,
The above beam splitter is an optical characteristic measuring device capable of separating light introduced through the probe module into transmitted light and reflected light. In the second paragraph,
The above probe module includes an image quality analysis unit and an optical characteristic measurement unit.
The image quality analysis unit includes the image sensor,
The optical characteristic measurement unit is connected to the spectroradiometer,
The above transmitted light is incident on the optical characteristic measurement section,
The above reflected light is an optical characteristic measuring device that is incident on the image quality analysis unit. In paragraph 1,
An optical characteristic measuring device wherein the cross-sectional area of the above relay module is smaller than the cross-sectional area of the above probe. In paragraph 4,
An optical characteristic measuring device including a bent shape in the above relay module. In paragraph 4,
The above relay module has
It includes a first parallel portion, a vertical portion and a second parallel portion which are connected to form an optical path,
One end of the first parallel section is connected to the probe,
An optical characteristic measuring device having an aperture arranged at the end of the second parallel section. In paragraph 6,
The above second parallel portion and the above probe module are parallel to each other,
An optical characteristic measuring device in which the height at which the probe module is located is different from the height at which the measurement target is located. In paragraph 6,
The above relay module further includes a first bend connecting the first parallel portion and the vertical portion,
The above first bending portion is an optical characteristic measuring device that causes an optical path formed inside the first parallel portion and the vertical portion to be bent. In Article 8,
The above relay module further includes a second bend connecting the vertical portion and the second parallel portion,
The above second bending portion is an optical characteristic measuring device that causes an optical path formed inside the second parallel portion and the vertical portion to be bent. In paragraph 1,
The above operating unit includes a three-axis position control unit,
The above three-axis position control unit is an optical characteristic measuring device capable of moving the probe module along the directions of the first axis, the second axis, and the third axis which are orthogonal to each other. delete delete In paragraph 1,
An optical characteristic measuring device having a horizontal rotating member installed on the first rotating driving unit. In Article 13,
The above horizontal rotation member includes a horizontal member and a pair of vertical members,
An optical characteristic measuring device having the vertical member attached to each end of the horizontal member. In paragraph 1,
The above two-axis rotation driving unit includes a second rotation driving unit,
The above second rotation driving unit rotates around the second rotation axis,
An optical characteristic measuring device in which the other end of the relay module is placed on the second rotation axis. In Article 15,
A swing member is coupled to the above second rotary driving part,
An optical characteristic measuring device in which the probe module is placed on the above swing member. In Article 16,
The above swing member includes a fixing member,
The above-mentioned fixing member is shaped like a 'ㄷ' or 'U' and is an optical characteristic measuring device in which the probe module is arranged.