Optical device

Abstract

To improve light blocking properties to improve measurement precision.SOLUTION: An optical device 100 comprises: a body part 10 which has a window 11 for passing light and accommodates an optical system; a holding part 20 which moves relative to the body part 10 to cover the surface of a sample 13 on the opposite side from the window 11 and also holds the sample 13 with the window 11; a drive mechanism 30 which drives the holding part 20; a light blocking part 40 which can move relative to the body part 10 and blocks outside light impinging on the window 11; and a moving mechanism 50 which cooperates with the holding action of the holding part 20 and moves the light blocking part 40 so that the light blocking part projects.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to an optical device.

Background Art

[0002] As an optical device, a plastic determination device for determining the material of plastic is known (see, for example, Patent Document 1). The plastic determination device includes an irradiation unit that irradiates infrared rays onto a film-shaped plastic, a reflection unit that reflects the infrared rays transmitted through the plastic, a detection unit that detects the infrared rays, and a restriction unit that restricts the intrusion of light to the reflection unit side.

[0003] The plastic determination device measures the spectrum of infrared rays that are irradiated onto the plastic and partially absorbed. The plastic determination device compares the infrared ray spectrum of the plastic to be compared with the infrared ray spectrum of the plastic to be determined, and determines the degree of similarity.

[0004] The restriction unit of the plastic determination device reflects light from outside the irradiation unit that passes in the in-plane direction of the film-shaped plastic by the reflection unit, which is a step that sandwiches the plastic. The restriction unit restricts the intrusion of the light to the reflection unit side.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique described in Patent Document 1, there may be a case where the shielding of external light is not sufficient.

[0006] An object of the present invention is to provide an optical device capable of improving light shielding properties and improving measurement accuracy.

Means for Solving the Problems

[0007] An optical device according to one aspect of the present invention has a window that transmits light, a main body that houses an optical system, a holding part that is movable relative to the main body, covers a surface on the side opposite to the window of the sample, and sandwiches the sample between the holding part and the window, a light-shielding part that is movable relative to the main body and shields the incidence of external light on the window, and a moving mechanism that moves the light-shielding part so as to project in conjunction with the holding operation of the holding part.

Advantages of the Invention

[0008] According to the present invention, it is possible to provide an optical device capable of improving light-shielding properties and measurement accuracy.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0010] [Optical Device 100 According to the First Embodiment] An example of an optical device 100 according to a first embodiment of the present invention will be described. FIG. 1 is a perspective view showing an example of an optical device 100 according to a first embodiment of the present invention. FIG. 2 is a plan view showing a main body portion 10 of the optical device 100. FIG. 3 is a schematic view showing the inside of the optical device 100 with the clamping portion 20 closed. FIG. 4 is a schematic view showing the inside of the optical device 100 with the clamping portion 20 open. FIG. 5 is a schematic view showing the inside of the optical device 100 with a sample 13 clamped.

[0011] In each figure, the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other may be shown. The Z-axis direction follows, for example, the vertical direction. The X-axis direction, the Y-axis direction, and the Z-axis direction may be other directions. The X-axis direction may include the direction indicated by the arrow and the opposite direction. The Y-axis direction may include the direction indicated by the arrow and the opposite direction. The Z-axis direction may include the direction indicated by the arrow and the opposite direction.

[0012] The optical device 100 is an optical measurement device capable of determining the material of the sample 13. The optical device 100 irradiates light on the sample 13, receives the light transmitted and reflected through the sample 13, and analyzes the material of the sample 13. The optical device 100 includes a main body portion 10, a clamping portion 20, a drive mechanism 30, a light shielding portion 40, and a moving mechanism 50. The optical device 100 may be, for example, a spectroscopic measurement device having a diffraction grating.

[0013] [Sample 13] The sample 13 shown in FIG. 5 may be, for example, a film-like plastic. The sample 13 may be in the form of a sheet or a plate. When measured by the optical device 100, the sample 13 is sandwiched and held between the main body 10 and the clamping part 20. The sample 13 is not limited to plastic, and may be resin, metal, or other materials.

[0014] [Main body 10] The main body 10 incorporates a measuring unit that measures the received light. The measuring unit includes an optical system. The optical system includes, for example, a light source, a measurement window, an entrance slit, a diffraction grating, an exit slit, and a light receiving element. The main body 10 includes a housing that houses the optical system. The housing may house other objects. The housing is, for example, box-shaped. The light emitted from the optical system may be, for example, infrared light or light of other wavelengths.

[0015] [Window 11] A window (measurement window) 11 that transmits light is formed in the wall body forming the outer shape of the main body 10. The window 11 transmits the light irradiated on the sample 13. The window 11 transmits the light reflected by the reflecting surface of the clamping part 20. The window 11 transmits the light related to the measurement in the optical device 100. The window 11 is circular when viewed in the thickness direction. The thickness direction of the window 11 is along, for example, the Z-axis direction.

[0016] [Support part 24] As shown in FIGS. 3 to 5, the main body 10 is provided with a support part 24 that supports the clamping part 20. The support part 24 is provided on the surface of the main body 10 facing the clamping part 20. The support part 24 may be a pair of support pieces formed to protrude from the main body 10. A through hole for inserting the rotation shaft 21 is formed in the support part 24. The rotation shaft 21 extends, for example, in the Y-axis direction. The support part 24 may directly support the clamping part 20, or may support the clamping part 20 via other members. Also, the support part 24 may be supported by the main body 10 via other members.

[0017] [Clamping part 20] The clamping part 20 is supported by the support part 24 via the rotation axis 21. The clamping part 20 is, for example, plate-shaped. The clamping part 20 is swingable around the rotation axis 21. A through-hole for inserting the rotation axis 21 is formed at the end of the clamping part 20 in the X-axis direction. The clamping part 20 is formed of a material that does not transmit light.

[0018] In FIG. 1, the clamping part 20 in the open state is shown. In FIGS. 3 and 5, the clamping part 20 in the closed state is shown. In FIG. 4, the clamping part 20 in the state during opening and closing is shown. The clamping part 20 is movable with respect to the main body part 10. As shown in FIG. 5, the clamping part 20 clamps the sample 13 between itself and the main body part 10. When the clamping part 20 is closed, the sample 13 is sandwiched and held between the clamping part 20 and the main body part 10. The clamping part 20 clamps the sample 13 between itself and the top plate where the window 11 of the main body part 10 is formed. When the clamping part 20 is closed, the thickness direction of the clamping part 20 is along the Z-axis direction.

[0019] The clamping part 20 is arranged to cover the surface of the sample 13 on the side opposite to the window 11 in the state where the sample 13 is clamped. The clamping part 20 clamps the sample 13 between itself and the window 11 in the Z-axis direction.

[0020] As shown in FIG. 3, when the clamping part 20 is closed and the sample 13 is not clamped, a gap may be formed between the clamping part 20 and the window 11. As shown in FIG. 1, when the clamping part 20 is open, the clamping part 20 is arranged to protrude in the X-axis direction from the main body part 10. The clamping part 20 swings about 180 degrees around the rotation axis 21.

[0021] [Drive mechanism 30] The drive mechanism 30 drives the clamping part 20. The drive mechanism 30 is mounted on the main body part 10. A part of the drive mechanism 30 may be provided on the side surface of the main body part 10. The drive mechanism 30 includes a slide-type switch that is exposed to the outside from the side surface of the main body part 10. The user can drive the clamping part 20 by sliding the switch. The user can open and close the clamping part 20 by sliding the switch.

[0022] For example, the user can open the clamping part 20 by sliding the switch upward. Here, "sliding the switch upward" may mean moving the switch in the direction approaching the window 11 in the Z-axis direction.

[0023] The switch may be connected to a spring which is an elastic member. When the user releases the finger from the switch, the switch may return downward. When the switch returns downward, the clamping part 20 may close according to the position of the switch.

[0024] The moving direction of the switch is not limited to the vertical direction. The moving direction of the switch may be the X-axis direction, the Y-axis direction, the Z-axis direction, or other directions. The switch may be a push-button type switch. Instead of the switch, the drive mechanism 30 may be a lever or a handle grip. The drive mechanism 30 may include electronic components. The drive mechanism 30 may open and close the clamping part 20 by detecting an operation by the user and outputting a drive signal for opening and closing the clamping part 20. The drive mechanism 30 may include a motor for opening and closing the clamping part 20.

[0025] [Power transmission mechanism 23] The optical device 100 may include a power transmission mechanism 23 that transmits power for moving the clamping portion 20. The power transmission mechanism 23 is built into the main body portion 10. Part or all of the power transmission mechanism 23 may be exposed outside the main body portion 10. The power transmission mechanism 23 is connected to the drive mechanism 30 and the clamping portion 20. The power transmission mechanism 23 can move in conjunction with the movement of the drive mechanism 30 to move the clamping portion 20. The power transmission mechanism 23 may move in conjunction with the movement of the clamping portion 20 to move the drive mechanism 30.

[0026] The power transmission mechanism 23 has a predetermined length. The power transmission mechanism 23 is disposed between the drive mechanism 30 and the clamping portion 20. The power transmission mechanism 23 may include a rod-shaped member and a plate-shaped member. One end of the power transmission mechanism 23 is connected to the drive mechanism 30, and the other end of the power transmission mechanism 23 may be disposed so as to be able to contact the clamping portion 20.

[0027] For example, the tip of the power transmission mechanism 23 may be able to contact the base end of the clamping portion 20. The tip of the power transmission mechanism 23 is the end closer to the clamping portion 20. The base end of the clamping portion 20 is the end closer to the rotation shaft 21.

[0028] For example, when the switch, which is the drive mechanism 30, is moved upward, the power transmission mechanism 23 may move upward and the power transmission mechanism 23 may push the clamping portion 20. Thereby, the clamping portion 20 opens. When the clamping portion 20 is closed, the tip of the power transmission mechanism 23 may be pushed downward, the power transmission mechanism 23 may move downward, and the power transmission mechanism 23 may move the switch, which is the drive mechanism 30, downward.

[0029] For example, by moving the switch downward, the power transmission mechanism 23 may move downward to allow the movement of the clamping portion 20. When the power transmission mechanism 23 is moving upward, the movement of the clamping portion 20 may be restricted, and when the power transmission mechanism 23 is moving downward, the movement of the clamping portion 20 may be allowed.

[0030] [Sample detection pin 12] As shown in FIGS. 1 to 5, the optical device 100 may include a sample detection pin 12. The longitudinal direction of the sample detection pin 12 is along the Z-axis direction, for example. The sample detection pin 12 is a detection unit that detects a sample 13 disposed between the window 11 and the clamping portion 20. The sample detection pin 12 is supported via a spring, for example, and is movable in the vertical direction.

[0031] The sample detection pin 12 is mounted on the main body 10. The upper end of the sample detection pin 12 is exposed to the outside from the main body 10. The sample detection pin 12 is disposed near the window 11. The sample detection pin 12 is disposed on the same surface as the surface of the main body 10 where the window 11 is formed. When viewed in the Z-axis direction, the sample detection pin 12 is disposed inside the light shielding portion 40. When viewed in the Z-axis direction, the sample detection pin 12 is disposed at a position closer to the window 11 than the light shielding portion 40.

[0032] For example, when no force acts on the upper end of the sample detection pin 12, the upper end of the sample detection pin 12 protrudes beyond the window 11. When the sample 13 is not disposed, no force acts on the upper end of the sample detection pin 12. When the sample 13 is disposed so as to cover the window 11, the sample 13 is pushed by the clamping portion 20, so that the upper end of the sample detection pin 12 is pushed and the sample detection pin 12 moves downward. The sample detection pin 12 sinks downward. The optical device 100 detects that the sample 13 is disposed between the window 11 and the clamping portion 20 by detecting the state in which the sample detection pin 12 has sunk downward.

[0033] The optical device 100 may detect the position of the sample detection pin 12 and operate the light shielding portion 40. The optical device 100 may displace the light shielding portion 40 according to the position of the sample detection pin 12.

[0034] [Sample detection pin relief hole 22] As shown in FIG. 1 and FIGS. 3 to 5, a sample detection pin relief hole 22 may be formed in the clamping portion 20. The sample detection pin relief hole 22 is a recess capable of accommodating the upper end of the sample detection pin 12. The sample detection pin relief hole 22 is disposed at a position facing the sample detection pin 12 in the Z-axis direction when the clamping portion 20 is closed. When the sample 13 does not exist between the window 11 and the clamping portion 20 in the state where the clamping portion 20 is closed, the upper end of the sample detection pin 12 is accommodated in the sample detection pin relief hole 22. Thereby, the sample detection pin 12 is not pressed by the clamping portion 20. When the sample 13 does not exist between the window 11 and the clamping portion 20 in the state where the clamping portion 20 is closed, the sample detection pin 12 does not displace.

[0035] [Light shielding portion 40] The light shielding portion 40 is mounted on the main body portion 10. The light shielding portion 40 is movable with respect to the main body portion 10 and shields the incidence of external light into the window 11. The external light is the light outside the optical device 100 and does not include the light irradiated from the main body portion 10. The external light may be disturbance light that has an adverse effect on the measurement in the optical device 100. The light shielding portion 40 suppresses the transmission of light.

[0036] As shown in FIG. 2, the light shielding portion 40 is formed so as to surround the window 11 when viewed in the Z-axis direction. The light shielding portion 40 may be, for example, a rectangular frame. The light shielding portion 40 may be formed in a shape of a square tube having a short length in the Z-axis direction. The light shielding portion 40 is not limited to a rectangular frame, and may be, for example, a circular frame or other shapes.

[0037] The light-shielding part 40 is movable in the Z-axis direction, for example. As shown in FIGS. 3 and 4, the light-shielding part 40 is housed inside the main body part 10 at the first position. As shown in FIG. 5, a part of the light-shielding part 40 protrudes outside from the main body part 10 at the second position. The light-shielding part 40 arranged at the second position protrudes from the main body part 10 to suppress the incidence of external light on the window 11. At the second position, the tip of the light-shielding part 40 abuts against the surface of the clamping part 20 closer to the main body part 10. Thereby, the incidence of external light on the region surrounded by the clamping part 20, the main body part 10, and the light-shielding part 40 can be suppressed.

[0038] The light-shielding part 40 may be deformed. When the sample 13 is larger than the region surrounded by the light-shielding part 40, a part of the sample 13 may protrude outside the light-shielding part 40. The upper end of the light-shielding part 40 abuts against and deforms the sample 13 sandwiched between the clamping part 20 and the light-shielding part 40. The upper end of the light-shielding part 40 adheres closely to the clamping part 20 and the sample 13. Thereby, in the optical device 100, the incidence of external light on the region surrounded by the clamping part 20, the main body part 10, and the light-shielding part 40 is suppressed.

[0039] The light-shielding part 40 is formed of a material that can suppress the transmission of external light that affects the measurement in the optical device 100. The light-shielding part 40 is formed of a material having elasticity, for example. Examples of the material having elasticity include a sponge material, a brush material, and an elastomer material. Among the light-shielding part 40, the tip portion that can contact the clamping part 20 may be made of a material that is more easily deformed than the base end portion. The material of the light-shielding part 40 may be partially different.

[0040] [Light-shielding part pedestal 41] As shown in FIGS. 3 to 5, the optical device 100 may include a light-shielding portion pedestal 41 that supports the light-shielding portion 40. The light-shielding portion pedestal 41 has a shape corresponding to the shape of the light-shielding portion 40. The light-shielding portion pedestal 41 may be, for example, a rectangular frame. It is built into the main body portion 10. The light-shielding portion pedestal 41 is disposed between the moving mechanism 50 and the light-shielding portion 40 in the Z-axis direction. The light-shielding portion pedestal 41 is connected to the moving mechanism 50 and the light-shielding portion 40. The light-shielding portion pedestal 41 is movable integrally with the light-shielding portion 40.

[0041] [Moving mechanism 50] The moving mechanism 50 moves the light-shielding portion 40 so as to protrude in conjunction with the clamping operation of the clamping portion 20. The moving mechanism 50 may include an actuator for moving the light-shielding portion 40. The actuator may be, for example, a motor. The moving mechanism 50 may include, for example, gears and a belt. The moving mechanism 50 may include a power transmission mechanism for transmitting the power for moving the light-shielding portion 40. The moving mechanism 50 is connected to the light-shielding portion 40 and can move the light-shielding portion 40 to the first position or the second position. The moving mechanism 50 may detect the state where the clamping portion 20 is closed and the presence of the sample 13 and move the light-shielding portion 40. The moving mechanism 50 may directly move the light-shielding portion 40 or indirectly move the light-shielding portion 40 via other members. The clamping operation of the clamping portion 20 includes the operation of clamping and holding the sample 13 between the clamping portion 20 and the main body portion 10. The clamping operation of the clamping portion 20 may be the opening and closing operation of the clamping portion 20.

[0042] When the moving mechanism 50 detects the state where the clamping portion 20 is open, the moving mechanism 50 may accommodate the light-shielding portion 40. The moving mechanism 50 can retract the protruding light-shielding portion 40. The moving mechanism 50 may move the light-shielding portion 40 upward to cause the light-shielding portion 40 to protrude, or may move the light-shielding portion 40 downward to retract the light-shielding portion 40.

[0043] [Actuation switch 51] The optical device 100 may be provided with an operation switch 51 capable of detecting the position of the sample detection pin 12. The operation switch 51 is electrically connected to the moving mechanism 50. The operation switch 51 can output an electrical signal indicating the position of the sample detection pin 12 to the moving mechanism 50. The operation switch 51 can detect that the sample detection pin 12 is in contact with the operation switch 51 and output an electrical signal indicating that the sample detection pin 12 exists at the position where it contacts the operation switch 51 to the moving mechanism 50.

[0044] For example, when the sample 13 exists at the position covering the window 11, the sample detection pin 12 is pushed and moved by the clamping portion 20 and the sample 13, and the sample detection pin 12 contacts the operation switch 51. The operation switch 51 outputs an electrical signal indicating that the sample detection pin 12 exists at the position where it contacts the operation switch 51 to the moving mechanism 50. Thereby, the moving mechanism 50 detects that the sample 13 exists at the position covering the window 11 and the clamping portion 20 is closed. The moving mechanism 50 can be moved so that the light shielding portion 40 protrudes by detecting the existence of the sample 13 and the closing of the clamping portion 20 and operating. By the light shielding portion 40 protruding, the incidence of external light into the region surrounded by the main body portion 10, the clamping portion 20, and the light shielding portion 40 can be suppressed.

[0045] Also, for example, when the sample 13 does not exist or the clamping portion 20 is open, the sample detection pin 12 protrudes from the main body portion 10, and the sample detection pin 12 is in a state of not contacting the operation switch 51. When the operation switch 51 is not in contact with the sample detection pin 12, it does not output an electrical signal to the moving mechanism 50. Thereby, the moving mechanism 50 can detect that the sample 13 does not exist or the clamping portion 20 is open. The moving mechanism 50 can be returned so as to accommodate the light shielding portion 40 by detecting that the sample 13 does not exist or the clamping portion 20 is open. The moving mechanism 50 can be returned to a position where the light shielding portion 40 does not protrude from the main body portion 10.

[0046] [Function and Effect of the Optical Device 100 According to the First Embodiment] The optical device 100 according to the first embodiment includes a main body 10 that houses an optical system and has a window 11 that transmits light, a clamping part 20 that is movable relative to the main body 10, covers the surface of the main body 10 opposite to the window 11 of the sample, and clamps the sample 13 between the clamping part 20 and the window 11, a driving mechanism 30 that drives the clamping part 20, a light-shielding part 40 that is movable relative to the main body 10 and shields the incidence of external light on the window 11, and a moving mechanism 50 that moves the light-shielding part 40 so as to protrude in conjunction with the clamping operation of the clamping part 20.

[0047] According to such an optical device 100, in conjunction with the opening and closing operation, which is the clamping operation of the clamping part 20, the moving mechanism 50 can move the light-shielding part 40 to make the light-shielding part 40 protrude. By the light-shielding part 40 protruding from the main body 10, the incidence of external light on the area surrounded by the main body 10, the clamping part 20, and the light-shielding part 40 can be blocked. According to the optical device 100, since the incidence of external light can be blocked, the light-shielding property can be improved and the measurement accuracy can be improved. In the optical device 100, it is suppressed that light due to external light passes through the window 11 and is received by the optical system inside the main body 10. As a result, the measurement accuracy can be improved in the optical device 100.

[0048] The optical device 100 includes a sample detection pin 12, which is a detection part that detects the sample 13 disposed between the window 11 and the clamping part 20. The moving mechanism 50 can move the light-shielding part 40 in conjunction with the detection of the sample 13 by the sample detection pin 12 and the clamping operation of the clamping part 20. According to such an optical device 100, when the sample 13 is clamped, the light-shielding part 40 can be moved to make the light-shielding part 40 protrude. Further, in the optical device 100, since the sample 13 can be detected and the light-shielding part 40 can be moved, the user can operate it with one hand. According to the optical device 100, the operation by the user is simplified.

[0049] In the optical instrument 100, when the sample 13 is not clamped, the light-shielding part 40 can be retracted inside the main body part 10, and when the sample 13 is clamped, the sample 13 can be detected and the light-shielding part 40 can be moved so as to protrude. Thereby, when the sample 13 is not clamped, the upper end part (tip part) of the sample 13 can be retracted into the main body part 10 and protected. In a state where measurement is not being performed, the light-shielding part 40 can be protected, and damage to the light-shielding part 40 can be suppressed. According to the optical instrument 100, the service life of the light-shielding part 40 can be extended.

[0050] In the optical instrument 100, the light-shielding part 40 can protrude so as to surround the window 11. By being arranged over the entire circumference of the window 11, the light-shielding part 40 can shield the incidence of external light into the region where the window 11 is in contact. The measurement accuracy in the optical instrument 100 can be improved. The light-shielding part 40 may contact the sample 13. The light-shielding part 40 may press the sample 13 against the clamping part 20 so as to hold the sample 13.

[0051] In the optical instrument 100, the light-shielding part 40 is mounted on the main body part 10 and can protrude from the main body part 10 toward the clamping part 20. In the optical instrument 100, the light-shielding part 40 can be housed inside the main body part 10, and by protruding the light-shielding part 40 during measurement, the incidence of external light can be shielded.

[0052] In the optical instrument 100, the clamping part 20 may be attached to the main body part 10 via a rotation axis 21 and may be swingable around the rotation axis 21. According to the optical instrument 100 having this configuration, the mechanism for operating the clamping part 20 can be simplified, and the optical instrument 100 can be miniaturized.

[0053] In the optical device 100, the main body 10 may have an optical system which is an analysis unit capable of analyzing the material of the sample 13. The optical device 100 may be a portable material discrimination device. The optical device 100 can analyze the material of the sample 13. The optical device 100 may detect the spectrum of the light that has passed through, reflected from, and entered the interior of the main body 10 after passing through the sample 13. The optical device 100 may be provided with a storage unit that stores information regarding the spectrum of the light of the sample 13 to be used as a comparison target. The storage unit is, for example, built into the main body 10. The optical device 100 may compare the spectrum of the light which is the analysis result of the sample to be used as a comparison target stored in the storage unit with the spectrum of the light which is the analysis result of the sample 13 to be determined. The optical device 100 may determine the similarity between the sample to be used as a comparison target and the sample 13 to be determined based on the comparison result of the spectra.

[0054] The optical device 100 may be provided with a communication unit, an input unit, an output unit, and a battery. The optical device 100 may be a small-sized, lightweight optical measurement device that can be held and operated by a user with one hand.

[0055] [Optical Device 100B According to the Second Embodiment] Next, the optical device 100B according to the second embodiment will be described. FIG. 6 is a schematic diagram showing the interior of the optical device 100B according to the second embodiment of the present invention. The difference between the optical device 100B according to the second embodiment shown in FIG. 6 and the optical device 100 according to the first embodiment described above is that the light-shielding unit 40, the light-shielding unit pedestal 41, and the moving mechanism 50 are mounted on the clamping unit 20. In the description of the optical device 100B of the second embodiment, the same description as that of the optical device 100 of the first embodiment will be omitted.

[0056] The optical device 100B according to the second embodiment includes a light-shielding portion 40, a light-shielding portion pedestal 41, and a moving mechanism 50 mounted on the clamping portion 20. The light-shielding portion 40 projects from the clamping portion 20 toward the top surface of the main body portion 10. A window 11 is formed on the top surface of the main body portion 10. The light-shielding portion 40 mounted on the clamping portion 20 projects in the Z-axis direction from the clamping portion 20 toward the main body portion 10 when the clamping portion 20 is closed. In conjunction with the clamping operation of the clamping portion 20, the moving mechanism 50 mounted on the clamping portion 20 pushes out the light-shielding portion 40. The pushed-out light-shielding portion 40 is in close contact with the main body portion 10. Thereby, according to the optical device 100B, it is possible to shield the incidence of external light into the region surrounded by the main body portion 10, the clamping portion 20, and the light-shielding portion 40. Also in the optical device 100B according to the second embodiment, the same operational effects as those of the optical device 100 of the first embodiment are achieved.

[0057] [Optical Device 100C According to the Third Embodiment] Next, the optical device 100C according to the third embodiment will be described. FIG. 7 is a schematic diagram showing the inside of the optical device 100C according to the third embodiment of the present invention. FIG. 8 is a schematic diagram showing the inside of the optical device with the clamping portion 20 open. FIG. 9 is a schematic diagram showing the inside of the optical device 100C while clamping the sample 13. The optical device 100C according to the third embodiment shown in FIGS. 7 to 9 is different from the optical device 100 according to the first embodiment described above in that the gap between the clamping portion 20 and the main body portion 10 can be adjusted. In the description of the optical device 100C according to the third embodiment, the same description as that of the optical device 100 according to the above embodiment may be omitted.

[0058] In the optical device 100C, a support portion 24 that supports the clamping portion 20 is slidably supported with respect to the main body portion 10. The clamping portion 20 and the rotation shaft 21 are slidable with respect to the main body portion 10 together with the support portion 24. The clamping portion 20, the rotation shaft 21, and the support portion 24 are movable, for example, in the Z-axis direction.

[0059] The optical device 100C has a guide portion that guides the movement of the support portion 24. The guide portion may be, for example, a guide rail and a guide groove.

[0060] [Support adjustment mechanism 31] The optical device 100C includes a support adjustment mechanism 31 for moving the support portion 24 and a power transmission mechanism 23B. The support adjustment mechanism 31 can change the gap between the main body portion 10 and the clamping portion 20 by sliding the clamping portion 20 with respect to the main body portion 10. The support adjustment mechanism 31 is mounted on the main body portion 10. A part of the support adjustment mechanism 31 may be provided on the side surface of the main body portion 10. The drive mechanism 30 and the support adjustment mechanism 31 may be arranged side by side in the X-axis direction. The support adjustment mechanism 31 and the power transmission mechanism 23B are an example of a gap adjustment unit that adjusts the gap between the main body portion 10 and the clamping portion 20.

[0061] The support adjustment mechanism 31 includes a slide-type switch that is exposed to the outside from the side surface of the main body portion 10. The user can slide the clamping portion 20 by sliding the switch. The user can slide the clamping portion 20 with respect to the main body portion 10 by sliding the switch.

[0062] For example, the user can slide the clamping portion 20 upward with respect to the main body portion 10 by sliding the switch of the support adjustment mechanism 31 upward. Here, "sliding the switch upward" may mean moving the switch in the direction approaching the window 11 in the Z-axis direction. By sliding the switch upward, the clamping portion 20 moves away from the main body portion 10. Thereby, in the optical device 100C, the gap between the clamping portion 20 and the main body portion 10 can be adjusted to be widened.

[0063] The switch that is the support adjustment mechanism 31 may be connected to a spring which is an elastic member. When the user releases a finger from the switch, the switch may return downward. By the switch returning downward, the position of the clamping portion 20 may be adjusted according to the position of the switch. By sliding the switch downward, the clamping portion 20 moves so as to approach the main body portion 10. Thereby, in the optical device 100C, the gap between the clamping portion 20 and the main body portion 10 can be adjusted to be narrowed.

[0064] The moving direction of the switch of the support adjustment mechanism 31 is not limited to the vertical direction. The moving direction of the switch may be the X-axis direction, the Y-axis direction, the Z-axis direction, or other directions. The switch may be a push-button type switch. Instead of the switch, the support adjustment mechanism 31 may include a lever or a handle grip. The support adjustment mechanism 31 may include electronic components. The support adjustment mechanism 31 may open and close the clamping portion 20 by detecting an operation by the user and outputting a drive signal for opening and closing the clamping portion 20. The support adjustment mechanism 31 may include a motor for sliding the clamping portion 20. The support adjustment mechanism 31 may include an actuator for sliding the clamping portion 20.

[0065] [Power transmission mechanism 23B] The optical device 100 may include a power transmission mechanism 23B that transmits power for sliding (moving) the clamping portion 20. The power transmission mechanism 23B is built into the main body portion 10. Part or all of the power transmission mechanism 23B may be exposed outside the main body portion 10. The power transmission mechanism 23 is connected to the support adjustment mechanism 31 and the support portion 24. The power transmission mechanism 23B moves in conjunction with the movement of the support adjustment mechanism 31 and can slide the clamping portion 20. The power transmission mechanism 23B may move in conjunction with the movement of the clamping portion 20 and move the support adjustment mechanism 31.

[0066] For example, the tip of the power transmission mechanism 23B may be capable of abutting against the base end portion of the support portion 24. The tip of the power transmission mechanism 23B is the end portion closer to the support portion 24. The base end portion of the support portion 24 is the end portion closer to the power transmission mechanism 23B. The base end portion of the support portion 24 is housed inside the main body portion 10, and the tip of the support portion 24 is disposed outside the main body portion 10 and is connected to the clamping portion 20 via the rotating shaft 21. As described above, the clamping portion 20, the rotating shaft 21, and the support portion 24 are integrally slidable with respect to the main body portion 10.

[0067] For example, by moving the switch downward, the power transmission mechanism 23B may move downward to allow the support portion 24 to move downward. When the power transmission mechanism 23B is moving upward, the downward movement of the support portion 24 may be restricted, and when the power transmission mechanism 23B is moving downward, the movement of the support portion 24 may be allowed.

[0068] [Clearance adjustment operation] In the optical device 100C, the clearance between the clamping portion 20 and the main body portion 10 can be adjusted. In FIG. 7, the optical device 100C in a state where the clamping portion 20 is closed and the clamping portion 20 and the main body portion 10 are approaching each other is illustrated. In the state shown in FIG. 7, the clearance between the clamping portion 20 and the main body portion 10 is in a narrow state. In this state, the support adjustment mechanism 31 and the power transmission mechanism 23B may be in a low position, and the support adjustment mechanism 31 may not be operated by the user.

[0069] In FIG. 8, the optical device 100C in a state where the clamping portion 20 is open and the clamping portion 20 and the main body portion 10 are separated from each other is illustrated. In the state shown in FIG. 8, the clearance between the clamping portion 20 and the main body portion 10 is in a wide state. In this state, the support adjustment mechanism 31 and the power transmission mechanism 23B may be in a high position, and the support adjustment mechanism 31 may be operated by the user. By operating the user to move the slide-type switch, which is the support adjustment mechanism 31, upward, the power transmission mechanism 23B pushes up the support portion 24, and the clearance between the clamping portion 20 and the main body portion 10 widens.

[0070] In FIG. 9, the clamping part 20 is in a closed state, the sample 13 is clamped between the clamping part 20 and the main body part 10, and the optical device 100C in a state where the clamping part 20 and the main body part 10 are separated is shown. By closing the clamping part 20 from the state shown in FIG. 8, the state shown in FIG. 9 is obtained. The positions of the rotating shaft 21 and the supporting part 24 with respect to the main body part 10 may be the same in FIGS. 8 and 9. The gap between the main body part 10 and the clamping part 20 may be the gap in a state where the sample 13 is not clamped. The gap between the main body part 10 and the clamping part 20 may be the distance between the clamping part 20 and the main body part 10 in a state where the clamping part 20 is closed. The gap between the main body part 10 and the clamping part 20 may be the distance between the rotating shaft 21 connected to the clamping part 20 and the main body part 10.

[0071] The sample 13 shown in FIG. 9 is thicker than the sample 13 shown in FIG. 5. In a state where the clamping part 20 is closed, the surface of the sample 13 closer to the clamping part 20 is in close contact with the clamping part 20. Also, in a state where the clamping part 20 is closed, the clamping part 20 and the light shielding part 40 are in close contact with each other. Thereby, the incidence of external light into the region surrounded by the main body part 10, the light shielding part 40, and the sample 13 is suppressed.

[0072] The optical device 100C may include a light shielding part 40 protruding from the main body part 10 and a light shielding part 40 protruding from the clamping part 20. The optical device 100C may include a plurality of light shielding parts 40 arranged to face each other in, for example, the Z-axis direction. The optical device 100C may include a plurality of light shielding parts 40 arranged at different positions in, for example, the X-axis direction and the Y-axis direction. The optical device 100C may include a plurality of light shielding parts 40 arranged to cover the sample 13 from a direction intersecting the Z-axis direction to suppress the incidence of external light.

[0073] [Operation and Effect of the Optical Device 100C According to the Third Embodiment] The optical device 100C according to the third embodiment exhibits the same operational effects as the optical device 100 according to the above-described first embodiment. According to the optical device 100C, since the incidence of external light can be blocked, the light-shielding property can be improved, and the measurement accuracy can be improved. In the optical device 100, it is suppressed that the light from the external light passes through the window 11 and is received by the optical system inside the main body 10. As a result, the measurement accuracy can be improved in the optical device 100.

[0074] The optical device 100C includes a support adjustment mechanism 31 and a power transmission mechanism 23B, which are gap adjustment parts for adjusting the gap between the main body 10 and the clamping part 20. According to such an optical device 100C, the gap between the main body 10 and the clamping part 20 can be adjusted according to the thickness of the sample 13. For example, when the thickness of the sample 13 is thin, by narrowing the gap between the main body 10 and the clamping part 20, the sample 13 can be stably clamped, and the incidence of external light between the main body 10 and the clamping part 20 can be suppressed. For example, when the thickness of the sample 13 is thick, by widening the gap between the main body 10 and the clamping part 20, the sample 13 can be stably clamped, and the incidence of external light between the main body 10 and the clamping part 20 can be suppressed. According to the optical device 100C, measurements can be performed on a plurality of types of samples 13 with different thicknesses.

[0075] In the optical instrument 100C, the degree of adhesion between the clamping part 20 and the sample 13 may be adjusted by changing the gap between the clamping part 20 and the main body part 10. In the optical instrument 100C, by changing the degree of adhesion between the clamping part 20 and the sample 13, the incidence of external light into the region between the main body part 10 and the clamping part 20 can be suppressed. Further, in the optical instrument 100, by changing the gap between the clamping part 20 and the main body part 10, the angle of the clamping part 20 in a state of being in contact with the sample 13 can be changed. In the optical instrument 100C, since the positions of the clamping part 20 and the rotation axis 21 with respect to the main body part 10 can be changed, the angle of the clamping part 20 can be changed. In the optical instrument 100C, for example, by changing the position of the clamping part 20 and the rotation axis 21 in the Z-axis direction, the clamping part 20 can be arranged along the XY plane. As a result, by adjusting the degree of adhesion between the clamping part 20 and the sample 13, the incidence of external light into the region between the main body part 10 and the clamping part 20 can be suppressed.

[0076] [Optical instrument 100 according to a modified example] Next, with reference to FIGS. 10 to 12, the optical instrument 100 according to the modified example will be described. FIG. 10 is a partial plan view showing a portion of the light shielding part 40 according to the modified example. FIG. 11 is a side view showing the light shielding part 40 according to the modified example. FIG. 12 is a side view showing the light shielding part 40 in a state of being in contact with the sample 13. The differences between the optical instrument 100 according to the modified example and the optical instrument 100 according to the above-described embodiment are that the light shielding part 40 includes an aggregate of a plurality of push pins 40a and the light shielding part 40 includes an elastic part 40b. In the description of the optical instrument 100 according to the modified example, the same description as that of the optical instruments 100, 100B, and 100C according to the above-described embodiment will be omitted.

[0077] [Aggregate of a plurality of push pins 40a] As shown in FIGS. 10 to 12, the light-shielding part 40 may include an aggregate of a plurality of push pins 40a. The longitudinal direction of the plurality of push pins 40a is positioned, for example, along the Z-axis direction. The plurality of push pins 40a are supported so as to be movable in their longitudinal direction. The plurality of push pins 40a may be arranged such that the side surfaces of adjacent push pins 40a are in contact with each other. The plurality of push pins 40a are independently movable in the longitudinal direction of the plurality of push pins 40a. The fact that the plurality of push pins 40a are independently movable means that the amounts of movement of the push pins 40a may be different from each other. In the optical device 100 according to the modified example, since the plurality of push pins 40a are independently movable in their longitudinal direction, the light-shielding part 40 is likely to be deformed according to the shape of the sample 13. Therefore, the degree of adhesion between the sample 13 and the light-shielding part 40 can be improved. As a result, the incidence of external light into the region surrounded by the clamping part 20, the main body part 10, the sample 13, and the light-shielding part 40 can be suppressed. The push pin 40a may be a rod-shaped member having a predetermined length.

[0078] The plurality of push pins 40a may have a surface with a low reflectivity. A low reflectivity means that the light reflectivity is low. The reflectivity of the surface of the push pin 40a may be lower than the reflectivity of the surface closer to the main body part 10 of the clamping part 20. The reflectivity of the surface at the tip of the push pin 40a may be lower than the reflectivity of the surface at the base end of the push pin 40a.

[0079] [Elastic part 40b] As shown in FIGS. 11 and 12, the optical device 100 according to the modified example may include a plurality of elastic parts 40b that abut against the base ends of the plurality of push pins 40a. The plurality of elastic parts 40b are provided so as to correspond to the plurality of push pins 40a on a one-to-one basis. The elastic part 40b is arranged along the longitudinal direction of the push pin 40a. The elastic part 40b may be, for example, a compression coil spring. The elastic part 40b is not limited to a compression coil spring and may be other biasing members. The elastic part 40b may bias the push pin 40a toward the sample 13.

[0080] When the push pin 40a is pushed, the elastic part 40b can be compressed and contracted. When the force pushing the push pin 40a is removed, the compressed elastic part 40b extends from the compressed state. The elastic part 40b can bias the push pins 40a to approach the clamping part 20 respectively. Thereby, in the optical device 100 according to the modification, the degree of adhesion between the push pin 40a and the sample 13 can be increased.

[0081] FIG. 12 shows a state in which the sample 13 having an uneven shape is in contact with an assembly of a plurality of push pins 40a. For example, of the surfaces of the sample 13 facing each other, one surface may be a flat surface and the other surface may have an uneven shape. The surface of the sample 13 on which the uneven shape is formed is arranged to contact the plurality of push pins 40a. The plurality of push pins 40a move along the uneven shape of the sample 13. Thereby, the assembly of the plurality of push pins 40a adheres along the uneven shape of the sample 13.

[0082] [Operation and Effect of the Optical Device 100 According to the Modification] Also in the optical device 100 according to the modification, the same operation and effect as those of the optical device 100 according to the above-described embodiment are exhibited. In the optical device 100, the light-shielding part 40 includes an assembly of a plurality of push pins 40a having a low-reflectivity surface, and the plurality of push pins 40a may be movable independently in the longitudinal direction of the plurality of push pins 40a. According to the optical device 100 having this configuration, the plurality of push pins 40a can be brought into close contact with the sample 13 by the respective movements of the plurality of push pins 40a corresponding to the uneven shape of the sample 13. Even when recesses or grooves are formed in the sample 13, the gaps between the sample 13 and the light-shielding part 40 can be filled by arranging the push pins 40a in the recesses or grooves. As a result, according to the optical device 100 according to the modification, the incidence of external light into the region surrounded by the sample 13, the main body part 10, and the light-shielding part 40 can be suppressed.

[0083] Further, the optical device 100 according to the modification example may include an elastic portion 40b that abuts on the base end portions of the plurality of extrusion pins 40a. According to such an optical device 100, the elastic portion 40b can bias the extrusion pins 40a toward the sample 13. Thereby, the plurality of extrusion pins 40a can be pressed against the sample 13. Therefore, the degree of adhesion between the sample 13 and the extrusion pins 40a can be increased, and the incidence of external light into the region surrounded by the sample 13, the main body portion 10, and the light shielding portion 40 can be suppressed.

[0084] Also, in the optical device 100 according to the modification example, the light shielding portion 40 may have a contractible contraction portion. The contraction portion is clamped by the clamping portion 20 and contracts in the direction from the sample 13 toward the main body portion 10. The light shielding portion 40 may have an elastic portion 40b that is the contraction portion. According to the optical device 100 having this configuration, the light shielding portion 40 and the sample 13 can be brought into close contact with each other by the contraction of the contraction portion corresponding to the uneven shape of the sample 13. As a result, according to the optical device 100 according to the modification example, the incidence of external light into the region surrounded by the sample 13, the main body portion 10, and the light shielding portion 40 can be suppressed.

[0085] Since the light shielding portion 40 has the contraction portion, damage to the sample 13 can be suppressed when the sample 13 and the light shielding portion 40 come into contact with each other. According to the optical device 100 having this configuration, the sample 13 can be reliably clamped, the light shielding property can be enhanced, and the sample 13 can be prevented from being damaged. The light shielding portion 40 may have flexibility and be deformable according to the shape of the sample 13 when it abuts on the sample 13. According to the optical device 100, even when the sample 13 has a curved shape, for example, the light shielding property can be stably exhibited due to the deformation of the light shielding portion 40. The light shielding portion 40 may have a structure in which only the tip portion that contacts the sample 13 is easily deformable, a structure in which other portions are easily deformable, or a structure in which the whole is easily deformable.

[0086] In the optical device 100 according to the modification example, for example, external light may enter through the gaps between the plurality of push pins 40a. However, the light is attenuated by repeatedly reflecting between the plurality of push pins 40a. Therefore, according to the optical device 100 according to the modification example, the incidence of external light into the region surrounded by the sample 13, the main body portion 10, and the light shielding portion 40 is suppressed.

[0087] [Optical device 100D according to the fourth embodiment] Next, the optical device 100D according to the fourth embodiment will be described. FIG. 13 is a perspective view showing an example of the optical device 100D according to the fourth embodiment of the present invention. FIG. 14 is a schematic view showing the holding portion 20 in a state where the standard member 25 and the reflecting member 26 are accommodated. FIG. 15 is a schematic view showing the standard member 25 and the reflecting member 26 in a state of being separated from the holding portion 20. The optical device 100D according to the fourth embodiment shown in FIGS. 13 to 15 is different from the optical device 100 according to the first embodiment described above in that it includes a standard member 25, a reflecting member 26, and a support arm 27. In the description of the optical device 100D according to the fourth embodiment, the same description as that of the optical device 100 according to the above embodiment may be omitted.

[0088] As shown in FIGS. 13 to 15, a standard member 25, a reflecting member 26, and a support arm 27 are mounted on the holding portion 20. The standard member 25 is a standard member for device calibration. The standard member 25 may be a standard member for calibrating the intensity of light emitted from a light source mounted on the main body portion 10. The standard member 25 may be a standard member for calibrating the sensitivity of the mounted detector. The standard member 25 may be a material whose measurement result is known with respect to factors that affect the measurement values in the optical device 100D, such as light emission and light detection. The standard member 25 is used to calibrate the variation in the measurement values. For example, before performing an example measurement using the optical device 100D, the user can perform calibration on the optical device 100D using the standard member 25.

[0089] The reflecting member 26 reflects the light that has passed through the sample 13. The sample 13 may be a highly transparent sample with a high light transmittance. In the optical device 100D, by reflecting the light, the utilization efficiency of the light emitted from the main body 10 can be improved.

[0090] The standard member 25 and the reflecting member 26 are integrated and supported by the support arm 27. The standard member 25 and the reflecting member 26 are, for example, in the shape of a rectangular plate. The back surface of the standard member 25 and the back surface of the reflecting member 26 are arranged to face each other and integrated. The standard member 25 and the reflecting member 26 may be directly bonded together, or may be joined via other members. The size of the standard member 25 may be substantially the same as that of the window 11, or may be larger than the window 11. Similarly, the size of the reflecting member 26 may be substantially the same as that of the window 11, or may be larger than the window 11.

[0091] The support arm 27 has a predetermined length. One end of the support arm 27 is connected to the clamping portion 20, and the other end is connected to the standard member 25 and the reflecting member 26. The optical device 100D may include a pair of support arms 27. The pair of support arms 27 may be arranged on both sides of the standard member 25 and the reflecting member 26 in the Y-axis direction.

[0092] The support arm 27 is swingable about a predetermined axis extending in the Y-axis direction. The support arm 27 may be connected to the clamping portion 20 via, for example, a pin. The integrated standard member 25 and reflecting member 26 are rotatably supported about a predetermined axis extending in the Y-axis direction. The standard member 25 and the reflecting member 26 are connected to the support arm 27 via, for example, a pin. By inverting the standard member 25 and the reflecting member 26, the member arranged closer to the window 11 can be switched.

[0093] The holding part 20 is formed with a recess for accommodating the standard member 25 and the reflection member 26. Fig. 14 shows the standard member 25 and the reflection member 26 in a state of being accommodated in the holding part 20. For example, when calibrating the device, the standard member 25 is arranged on the outer surface, and when measurement is performed, the reflection member 26 is arranged on the outer surface. The outer surface mentioned here is the surface facing the window 11 when the holding part 20 is closed. When the standard member 25 and the reflection member 26 are accommodated in the recess of the holding part 20, the longitudinal direction of the support arm 27 is arranged along the X-axis direction.

[0094] In Fig. 15, the standard member 25 and the reflection member 26 are arranged away from the holding part 20. In the state shown in Fig. 15, the support arm 27 is arranged to be inclined with respect to the X-axis direction, and the tip of the support arm 27 is arranged away from the holding part 20. In this state, by rotating the standard member 25 and the reflection member 26, the arrangement of the standard member 25 and the reflection member 26 can be interchanged. For example, the reflection member 26 arranged inside can be arranged outside, and the standard member 25 arranged outside can be arranged inside.

[0095] [Operation and Effect of the Optical Device 100D According to the Fourth Embodiment] The optical device 100D according to the fourth embodiment exhibits the same operational effects as the optical device 100 according to the above-described first embodiment. The optical device 100D includes a standard member 25 for device calibration and a reflecting member 26 that reflects the light transmitted through the sample 13, and at least one of the standard member 25 and the reflecting member 26 is mounted on the clamping portion 20. According to the optical device 100D having this configuration, when using the standard member 25 or the reflecting member 26, it is not necessary for the user to hold the standard member 25 or the reflecting member 26 by hand. For example, if while holding the standard member or the reflecting member with one hand, the user operates the optical device with the other hand, the user's both hands will be occupied. However, with the optical device 100D, it is not necessary for the user to hold the standard member 25 or the reflecting member 26 by hand. Also, with the optical device 100D having this configuration, when using the standard member 25 or the reflecting member 26, it is easy to arrange the standard member 25 or the reflecting member 26 at a predetermined position. By closing the clamping portion 20, the standard member 25 or the reflecting member 26 can be arranged at a position facing the window 11.

[0096] In the optical device 100D, the back surface of the standard member 25 and the back surface of the reflecting member 26 may be arranged to face each other and integrated, and may be provided with a support arm 27 (support portion) that is mounted on the clamping portion 20 and supports the standard member 25 and the reflecting member 26 in a reversible manner. In the optical device 100D, by inverting the standard member 25 and the reflecting member 26, the surface facing the window 11 may be switched. According to such an optical device 100D, the convenience when using the standard member 25 or the reflecting member 26 is improved. The switching between the standard member 25 and the reflecting member 26 can be easily performed.

[0097] Note that the above-described embodiments are presented as examples and are not intended to limit the scope of the present invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. Also, the embodiments and the modifications of the embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

[0098] In the above-described embodiment, the optical device 100 including the clamping portion 20 that can swing around the rotation axis 21 is exemplified. However, the optical device 100 may not include the rotation axis 21. The optical device 100 may include the clamping portion 20 that is slidable with respect to the main body portion 10. The optical device 100 that clamps the sample 13 may be provided by the clamping portion 20 sliding with respect to the main body portion 10. The rotation axis 21 may extend in the Z-axis direction, for example. The clamping portion 20 may rotate around the rotation axis 21 extending in the Z-axis direction, for example.

[0099] The moving direction of the light-shielding portion 40 is not limited to the Z-axis direction, and the light-shielding portion 40 may move so as to protrude by moving in the X-axis direction or the Y-axis direction. The movement of the light-shielding portion 40 is not limited to linear movement, and the light-shielding portion 40 may move so as to swing or rotate around a predetermined axis.

[0100] One aspect of the present invention may be as follows.

[0101] <1> A main body portion that has a window through which light is transmitted and houses an optical system, A clamping portion that is movable with respect to the main body portion, covers a surface of the sample opposite to the window, and clamps the sample between the window and the clamping portion, A drive mechanism that drives the clamping portion, A light-shielding portion that is movable with respect to the main body portion and shields the incidence of external light on the window, An optical device including a movement mechanism that moves the light-shielding portion so as to protrude in conjunction with the clamping operation of the clamping portion. <2> A detection unit that detects the sample disposed between the window and the clamping portion is provided, The movement mechanism is the optical device according to <1> above that moves the light-shielding portion in conjunction with the detection of the sample by the detection unit and the clamping operation of the clamping portion. <3> The light-shielding portion is the optical device according to <1> or <2> above that protrudes so as to surround the window. <4> The light-shielding part is mounted on the main body part and protrudes from the main body part toward the clamping part, and is the optical device according to any one of <1> to <3> above. <5> The light-shielding part is mounted on the clamping part and protrudes from the clamping part toward the main body part, and is the optical device according to any one of <1> to <4> above. <6> The clamping part is attached to the main body part via a rotation axis and is swingable around the rotation axis, and is the optical device according to any one of <1> to <5> above. <7> The optical device according to any one of <1> to <6> above, comprising a gap adjustment part for adjusting a gap between the main body part and the clamping part. <8> The light-shielding part has a contractible contraction part, and is the optical device according to any one of <1> to <7> above. <9> The light-shielding part includes an aggregate of a plurality of extrusion pins having a low reflectivity surface, The plurality of extrusion pins are movable independently in the longitudinal direction of the plurality of extrusion pins, and are the optical device according to any one of <1> to <8> above. <10> The optical device according to <9> above, comprising an elastic part that abuts against a base end part of the plurality of extrusion pins. <11> A standard member for equipment calibration, and A reflection member that reflects the light transmitted through the sample, and includes, At least one of the standard member and the reflection member is mounted on the clamping part, and is the optical device according to any one of <1> to <10> above. <12> The back surface of the standard member and the back surface of the reflection member are arranged to face each other and integrated, The optical device according to <11> above, which is mounted on the clamping part and includes a support part that supports the standard member and the reflection member in a reversible manner. By inverting the standard member and the reflection member, the surface facing the window can be switched, and is the optical device according to <11> above. <13> The main body portion has an analysis unit capable of analyzing the material of the sample. The optical device according to any one of <1> to <12> above, which is portable.

Explanation of Signs

[0102] 100, 100B, 100C, 100D Optical device 10 Main body portion 11 Window 12 Sample detection pin (detection unit) 13 Sample 20 Clamping portion 21 Rotation axis 23 Power transmission mechanism 23B Power transmission mechanism (gap adjustment unit) 24 Support portion (support portion for supporting the clamping portion) 25 Standard member 26 Reflective member 27 Support arm (support portion for supporting the standard member and the reflective member) 30 Driving mechanism 31 Support adjustment mechanism (gap adjustment unit) 40 Light shielding portion 40a Pushing pin 40b Elastic portion (contracting portion) 50 Moving mechanism

Prior Art Documents

Patent Documents

[0103]

Patent Document 1

Claims

1. An optical device comprising a main body portion that has a window for transmitting light and houses an optical system, a clamping portion that is movable relative to the main body portion, covers a surface of a sample on the side opposite to the window, and clamps the sample between the clamping portion and the window, a drive mechanism for driving the clamping portion, a light-shielding portion that is movable relative to the main body portion and shields the window from incident external light, and a movement mechanism that moves the light-shielding portion so as to project in conjunction with the clamping operation of the clamping portion.

2. The optical device according to claim 1, further comprising a detection portion that detects the sample disposed between the window and the clamping portion, wherein the movement mechanism moves the light-shielding portion in conjunction with detection of the sample by the detection portion and the clamping operation of the clamping portion.

3. The optical device according to claim 1, wherein the light-shielding portion projects so as to surround the window.

4. The optical device according to claim 1, wherein the light-shielding portion is mounted on the main body portion and projects from the main body portion toward the clamping portion.

5. The optical device according to claim 1, wherein the light-shielding portion is mounted on the clamping portion and projects from the clamping portion toward the main body portion.

6. The optical device according to claim 1, wherein the clamping portion is attached to the main body portion via a rotation axis and is swingable around the rotation axis.

7. The optical device according to claim 1, further comprising a gap adjustment portion that adjusts a gap between the main body portion and the clamping portion.

8. The optical device according to claim 1, wherein the light-shielding portion has a contractible contraction portion.

9. The optical device according to claim 1, wherein the light-shielding portion includes an assembly of a plurality of extrusion pins having a surface with a low reflectance, and the plurality of extrusion pins are independently movable in the longitudinal direction of the plurality of extrusion pins.

10. The optical device according to claim 9, further comprising an elastic portion that abuts against a base end portion of the plurality of extrusion pins.

11. a standard member for device calibration, and a reflection member that reflects light transmitted through the sample, wherein at least one of the standard member and the reflection member is mounted on the clamping portion.

12. The optical device according to claim 11, wherein the back surface of the standard member and the back surface of the reflection member are arranged to face each other and integrated, and the optical device further comprises a support portion that is mounted on the clamping portion and supports the standard member and the reflection member in a reversible manner, wherein the surface facing the window can be switched by inverting the standard member and the reflection member.

13. The main body has an analysis unit capable of analyzing the material of the sample. The optical device according to claim 1, which is portable.

Images