JP5954424B2 - Optical property measuring device - Google Patents

Description

The present invention relates to an optical property measuring apparatus .

  2. Description of the Related Art Conventionally, as an optical characteristic measuring apparatus, for example, a colorimeter, a spectrocolorimeter, or the like, which is used for managing the surface color and the color of printed matter in industrial products such as vehicles and panels, is known. Such an apparatus such as a colorimeter or a spectrocolorimeter generally irradiates a sample to be measured with illumination light, receives reflected light of the illumination light from the sample, and based on the light reception result, for example, Predetermined optical characteristics such as spectral reflection characteristics are measured. One of them is, for example, a handy type optical characteristic measuring apparatus disclosed in Patent Document 1.

  The optical characteristic measuring apparatus disclosed in Patent Document 1 is a casing having an outer shape that can be grasped by a hand, for example, a cylindrical body, and is housed inside the casing, and irradiates a sample with illumination light using diffused light. Integrating sphere and light source, and measurement light that is received in the housing and receives reflected light reflected by the sample with a geometry (optical condition) of d / 0 (diffuse illumination, 0 degree light reception) And a fiber cable. The one end of the cylindrical housing has a funnel shape in which the diameter gradually decreases from the attachment end to the housing toward the tip, and a measurement opening (for example, a diameter of about 5 mm to about 10 mm in diameter) is formed at the tip. Thus, a light-shielding cylinder having a glass surface and a light-shielding cylinder with a glass plate further provided with a transparent plate covering the measurement opening is attached in a replaceable manner. Thus, in the optical characteristic measuring apparatus disclosed in Patent Document 1, the light shielding tube or the light shielding tube with a glass plate can be used as an attachment according to the intended use.

  By the way, for example, when measuring the hue (color shade) of a display panel or a solar cell of a liquid crystal display device, since the panel is relatively large, a stationary optical characteristic measuring device is unsuitable. The disclosed optical property measuring apparatus is suitable because it is a handy type.

  However, since a transparent protective panel such as a glass thin plate or a resin thin plate is generally used on such a surface to protect the surface of such a display panel, solar cell, etc. When the characteristics are measured, the measurement results may not be stable, and it has been found difficult to accurately measure the color. Such a protection panel has different optical characteristics on the front surface and optical properties on the back surface. Therefore, the reflected light measured by the optical property measuring apparatus is affected by the back surface, and the reflected light component on the front surface The inventor infers that the reflected light component on the back surface becomes unbalanced. More specifically, the protective panel has, for example, a coating layer (covering layer) such as an antireflection film on its surface, and has a diffusion layer or the like on its back surface. For this reason, when an optical property measurement device that measures optical properties with a geometry of d / 0 is used for measurement, the reflected light measured by this optical property measurement device is reflected light that does not contain a color component on the back surface. The inventor speculates that the ratio of the component is relatively larger than the reflected light component on the colored surface.

  On the other hand, when measuring samples of general measurement objects such as painted surfaces, printed surfaces, plastics, and highly opaque materials, the situation described above for protective panels does not occur. The apparatus can suitably measure optical properties with a d / 0 geometry. For this reason, it is desirable that the optical characteristic measurement apparatus can cope with the above-described situation that occurs in the protective panel while enabling measurement of such a general sample.

  Moreover, in the said light shielding cylinder and the light shielding cylinder with a glass plate of the said patent document 1, it is only whether a detection opening is made into an open (opening) state or a closed (closed) state, The above-mentioned situation which arises in a protection panel It is not possible to cope with.

JP 2011-133463 A

The present invention has been made in view of the above-described circumstances, and its object is to maintain a general sample measurement function, for example, a back surface such as a protection panel used for a display panel, a solar cell, or the like. It is an object of the present invention to provide an optical characteristic measuring apparatus capable of measuring a sample whose optical characteristics affect the optical characteristics of the surface.

The optical characteristic measuring apparatus according to the present invention includes an antireflection member for preventing reflection of illumination light on the inner surface of a hollow columnar attachment body that is detachable from the optical characteristic measuring apparatus and shields external light. Such an optical property measuring apparatus is a sample in which the optical properties of the back surface affect the optical properties of the front surface, such as a protective panel used for a display panel, a solar cell, etc., while maintaining a general sample measurement function. Can also be measured.

  The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a figure which shows the external appearance structure of the optical characteristic measuring apparatus in embodiment. It is a block diagram which shows the electrical structure of the optical characteristic measuring apparatus shown in FIG. It is a longitudinal cross-sectional view which shows the partial cross section of the measurement probe in the optical characteristic measuring apparatus shown in FIG. It is a figure for demonstrating the mode of replacement | exchange of a normal light shielding cylinder and a light shielding cylinder with a glass plate as an example of replacement | exchange of an attachment with respect to the measurement probe in the optical characteristic measuring apparatus shown in FIG. It is a longitudinal cross-sectional view which shows the structure of the antireflection light-shielding cylinder of the 1st aspect in the optical characteristic measuring apparatus shown in FIG. It is an external appearance perspective view which shows the kind detection part in the optical characteristic measuring apparatus shown in FIG. It is a figure which shows the structure of the antireflection light-shielding cylinder of the 2nd aspect in the optical characteristic measuring apparatus shown in FIG. It is a figure which shows the structure of the reflection prevention light shielding cylinder of the 3rd aspect in the optical characteristic measuring apparatus shown in FIG. It is a figure which shows the structure of the reflection prevention light shielding cylinder of the 4th aspect in the optical characteristic measuring apparatus shown in FIG. It is a longitudinal cross-sectional view which shows the structure of the antireflection light-shielding cylinder of the 5th aspect in the optical characteristic measuring apparatus shown in FIG. It is a flowchart which shows the measurement operation | movement of the optical characteristic measuring apparatus shown in FIG.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. Further, in this specification, when referring generically, it is indicated by a reference symbol without a suffix, and when referring to an individual configuration, it is indicated by a reference symbol with a suffix.

  FIG. 1 is a diagram illustrating an external configuration of an optical characteristic measuring apparatus according to an embodiment. FIG. 2 is a block diagram illustrating an electrical configuration of the optical characteristic measuring apparatus according to the embodiment. FIG. 3 is a longitudinal cross-sectional view showing a partial cross section of the measurement probe in the optical characteristic measurement apparatus of the embodiment. FIG. 3 shows a state in which a normal light shielding cylinder is attached to the measurement probe (upper side in the figure) and a state in which a light shielding cylinder with a glass plate is attached to the measurement probe (lower side in the figure). FIG. 4 is a diagram for explaining a state of replacement between a normal light-shielding cylinder and a light-shielding cylinder with a glass plate as an example of replacement of the attachment with respect to the measurement probe in the optical property measurement apparatus of the embodiment. FIG. 5 is a longitudinal cross-sectional view showing the configuration of the antireflection light-shielding tube of the first aspect in the optical property measuring apparatus of the embodiment. FIG. 6 is an external perspective view illustrating a type detection unit in the optical characteristic measurement apparatus according to the embodiment.

The optical characteristic measurement apparatus of the present embodiment irradiates the sample to be measured with diffused light as illumination light, thereby receiving the reflected light of the diffused light reflected by the sample, and based on the received reflected light. This is a device for measuring predetermined optical characteristics. The predetermined optical characteristic is, for example, color, color, and the like. More specifically, the optical characteristic measuring device includes, for example, a color meter that measures color by measuring a so-called tristimulus value included in the reflected light of the diffused light, and each of the light included in the reflected light of the diffused light. A spectral colorimeter that measures so-called spectral reflectance by measuring the intensity of wavelength, a color luminance meter that measures luminance and chromaticity based on the reflected light of the diffused light, and the like. As shown in FIGS. 1 to 6, the optical characteristic measuring apparatus D according to the present embodiment includes the calculation control main body 1 and the calculation control main body 1 via the cable CB including the optical fiber cable FC and the control signal line CL. A measurement probe ( optical characteristic measuring device main body) 2 connected to the, and an attachment AT detachable from the measurement probe 2. In the example shown in FIG. 1, a light shielding cylinder ( first attachment) 3 a is attached to the measurement probe 2 as the attachment AT. Since the optical characteristic measuring apparatus D of the present embodiment is a handy type, the optical characteristic measuring main body is configured by the arithmetic control main body 1 and the measurement probe 2.

  The calculation control main body 1 is a device that controls each part of the optical characteristic measuring apparatus D according to the function and calculates predetermined optical characteristics based on the reflected light of the diffused light with respect to the sample SM obtained by the measurement probe 2. is there. The reflected light of the diffused light is obtained by irradiating the sample SM with diffused light as illumination light by the measurement probe 2. As shown in FIGS. 1 and 2, the arithmetic control main body 1 includes, for example, an input unit 11, a display unit 12, a printing unit 13, an interface unit (IF unit) 14, an arithmetic control unit 15, and the like. The light receiving processing unit 16 is provided.

  The input unit 11 is a device that inputs various commands such as a command for instructing the start of measurement and various data necessary for measuring optical properties such as input of an identifier in the sample SM to the optical property measuring apparatus D, for example. For example, a plurality of switches and their peripheral circuits are provided. The display unit 12 is a device that displays commands and data input from the input unit 11 and optical characteristics of measured measurement results. For example, the display unit 12 is a display device such as a CRT display, a liquid crystal display (LCD), and an organic EL display. is there. The printing unit 13 is a device that prints commands and data input from the input unit 11 and optical characteristics of measurement results, and is, for example, a printing device such as a printer. The IF unit 14 is an external interface for exchanging data with an external device, and is, for example, a USB (Universal Serial Bus).

  The arithmetic control unit 15 controls the respective units of the optical property measuring device D according to the function, thereby controlling the operation of the entire optical property measuring device, and predetermined based on the reflected light of the diffused light obtained by the measurement probe 2. For example, a microcomputer including a microprocessor, a memory, and its peripheral circuits is used. In the calculation control unit 15, a control unit 151 and an optical characteristic calculation unit 152 are functionally configured by executing a program stored in the memory. The control unit 151 controls each unit of the input unit 11, the display unit 12, the printing unit 13, the IF unit 14, the light reception processing unit 16, and the measurement probe 2 in the optical characteristic measuring device D according to the function. The optical characteristic calculator 152 calculates a predetermined optical characteristic based on the reflected light of the diffused light with respect to the sample SM obtained by the measurement probe 2. In the calculation of the optical characteristics, the optical characteristic calculation unit 152 determines the type of the attachment AT attached to the measurement probe 2 according to the output of the type detection unit 26, as will be described later, and determines the type of the determined attachment. Accordingly, the optical characteristics are obtained.

  The light reception processing unit 16 receives the reflected light of the diffused light with respect to the sample SM obtained by the measurement probe 2, performs a predetermined preprocessing on the light reception result, and outputs the result to the arithmetic control unit 15. The light receiving processing unit 16 includes, for example, a light receiving circuit including a photoelectric conversion element that outputs an electric signal corresponding to the amount of light received by performing photoelectric conversion, a low noise amplification circuit that amplifies the output of the light receiving circuit at a predetermined amplification factor, In order to remove noise, a filter circuit for filtering the output of the low noise amplifier circuit in a predetermined band (filtering), an analog-digital conversion circuit for converting the output of the filter circuit from an analog signal to a digital signal, and the like are provided. As the predetermined preprocessing, amplification processing, noise removal processing, AD conversion processing, and the like are performed.

  As shown in FIG. 1, the input unit 11, the display unit 12, the printing unit 13, the IF unit 14, the calculation control unit 15, and the light receiving processing unit 16 in the calculation control main body 1 are a box-shaped first housing having a substantially rectangular parallelepiped shape. It is stored in the body HS1. In the first housing HS1, the input unit 11, the display unit 12, and the printing unit 13 are arranged in order from one end to the other end, and the optical fiber cable FC and the cable CB including the control signal line CL extend from the side surface. .

  The measurement probe 2 is connected to the calculation control main body 1 via the cable CB, and diffused light is applied to the sample SM as illumination light in accordance with the control of the control unit 151 in the calculation control unit 15 via the control signal line CL included in the cable CB. The reflected light of the diffused light that has been irradiated and reflected by the sample SM is received at one end of the optical fiber cable FC. The optical fiber cable FC includes a plurality of optical fibers and is a bundle of the plurality of optical fibers. The reflected light of the diffused light is guided to the light receiving processing unit 16 through the optical fiber cable FC, received by the photoelectric conversion element of the light receiving processing unit 16 and photoelectrically converted. Further, in the measurement of the reflected light of the diffused light, the type detection unit 26 is controlled by the control unit 151 in the calculation control unit 15 via the control signal line CL in order to detect the type of the attachment AT.

  For example, as shown in FIGS. 1 and 3, the measurement probe 2 includes an integrating sphere 21, a light source 22, a light shielding plate 23, a diffusion plate 24, a light receiving tube 25, a type detection unit 26, and these integrating spheres. 21, a light source 22, a light shielding plate 23, a diffusion plate 24, a light receiving cylinder 25, and a second housing HS <b> 2 that houses a type detection unit 26.

  The second housing HS2 is, for example, a hollow columnar body having an outer shape that can be grasped by hand, for example, a cylindrical body, and has a housing-side attachment portion 27 for attaching the attachment AT at one end (tip) thereof. The other end is closed, and the cable CB extends from the side peripheral surface near the other end. The housing side attaching portion 27 may be, for example, a male screw formed on the outer peripheral surface of the cylindrical body of the second housing HS2. In such a case, female threads are formed on the inner peripheral surface of the attachment AT as light-shielding tube side mounting portions 32 and 42, which will be described later, and the second housing HS2 and the attachment AT are detachable by this screw structure. The Further, for example, the housing side attaching portion 27 may be a fitting groove (locking groove) formed on the outer peripheral surface of the cylindrical body of the second housing HS2 and extending in the circumferential direction and recessed radially inward. In such a case, on the inner peripheral surface of the attachment AT, protrusions (engagement protrusions) extending in the circumferential direction and protruding radially outward are formed as the light shielding tube side attachment portions 32 and 42, and the protrusion The second housing HS2 and the attachment AT are detachable by the structure in which the strip is fitted in the fitting groove.

  The light source 22 is a device that emits light serving as illumination light, and is, for example, a xenon lamp (Xe lamp). The light shielding plate 23 is a member that blocks light. The diffusion plate 24 is a member that diffuses and emits incident light. The light receiving cylinder 25 is a cylindrical member, and an optical fiber cable FC is disposed in the light receiving cylinder 25.

  The type detection unit 26 is a sensor device for detecting the type of the attachment AT attached to the measurement probe 2. The type detection unit 26 includes, for example, a PR sensor including a light emitting unit such as a light emitting diode and a light receiving unit such as a photodiode and its peripheral circuit, and receives reflected light of light emitted from the light emitting unit at the light receiving unit. The magnitude of the received light intensity is output to the arithmetic control unit 15 via the cable CB. The type detection unit 26 may be a mechanical switch that is turned on / off by a mechanical operation instead of the PR sensor, and outputs a signal corresponding to each on / off state to the arithmetic control unit 15 via the cable CB. . As shown in FIG. 6, the type detection unit 26 faces the outside so that the type of the attachment AT can be detected on the outer peripheral surface of the second housing HS2 in the vicinity of the housing side mounting portion 27. For example, the type detection unit 26 faces the outside on the outer peripheral surface so that emitted infrared light can be emitted and infrared reflected light can be incident.

  The integrating sphere 21 is a member for uniformly diffusing and illuminating the sample SM by uniformly irradiating the diffuser plate 24 with the radiated light emitted from the light source 22. More specifically, as shown in FIG. 3, for example, a hollow cylindrical member having one end opened like a bell and closed at the other end. The integrating sphere 21 having the shape shown in FIG. 3 may be said to be a simple integrating sphere having the same function as that of a spherical shape although the inner surface shape is not spherical. In the integrating sphere 21 having such a shape, the light receiving cylinder 25 is disposed at the center position along the axial direction from the opening surface to the closing surface. A through opening for inserting the cable CB is formed in the closed surface (ceiling surface), and external light is prevented from entering the integrating sphere 21 through a gap between the through opening and the light receiving tube 25. Therefore, a ring-shaped flange plate is erected on the one end peripheral surface of the light receiving tube 25 close to the closed surface so as to surround the outer peripheral surface of the light receiving tube 25 and to extend radially outward. On the other end peripheral surface of the light receiving tube 25 on the opening surface side, a diffuser plate 24 is disposed in a ring shape so as to surround the outer peripheral surface of the light receiving tube 25 and to extend radially outward. A ring tube-shaped light source 22 is disposed so as to surround the outer peripheral surface of the light receiving tube 25 at a position slightly closer to the closing surface than the axial center position in the light receiving tube 25. A light shielding plate 23 is disposed between the light source 22 and the diffusion plate 24 so as to prevent the emitted light emitted from the light source 22 from reaching the diffusion plate 24 directly. More specifically, a light shielding plate 23 is disposed at a substantially central position in the axial direction of the light receiving tube 25 so as to surround the outer peripheral surface of the light receiving tube 25 and to extend radially outward. The outer peripheral edge of the diffusing plate 24 may contact the inner peripheral surface of the integrating sphere 21 to close the opening surface of the integrating sphere 21. In the present embodiment, the one end portion of the cylindrical second housing HS2 has a tapered portion formed so as to gradually decrease from the housing-side mounting portion 27 toward the tip until the diameter becomes a predetermined diameter, The illumination light receiving unit 100 is formed to include the first opening 100 having the predetermined first diameter. One end of the integrating sphere 21 forming the opening surface is in contact with the tapered portion of the second casing HS2, and the outer peripheral edge of the diffusion plate 24 is the first end of the second casing HS2. It is in contact with the peripheral edge of the opening 100. Therefore, the ring plate-shaped diffusion plate 24 and the front end 251 of the light receiving cylinder 25 are disposed in the first opening 100 of the second housing HS2 as the illumination light receiving unit 100. The inner surface of the integrating sphere 21 is painted with a white paint such as barium sulfate so as to diffusely reflect light, and a white coating layer is formed on the inner surface.

  In such an integrating sphere 21, the light emitted from the light source 22 is shielded by the light shielding plate 23 so as not to reach the diffusion plate 24 directly, and diffusely reflects on the inner surface of the integrating sphere 21 one or more times. After repeating, the light reaches the diffusion plate 24 and is emitted from the diffusion plate 24 as illumination light in the state of diffused light.

  The attachment AT changes the optical state (condition) of the first opening 100 as the illumination light receiving unit 100 formed in the second housing HS2 of the measurement probe 2 according to the measurement purpose of the optical characteristic measuring device D. This is a member for adjusting to the state (condition). The attachment AT shown in the upper side of FIGS. 1 and 3 is a light shielding cylinder 3a used for normal measurement.

The light-shielding cylinder 3a has a tapered portion 31 formed so as to gradually decrease from one end to the other end until the diameter reaches a predetermined second diameter, and the tapered portion 31 is formed at one end of the tapered portion 31. At the other end of the light shielding tube side attachment portion (first attachment portion) 32 for attaching the light shielding tube 3a to the second housing HS2 of the measurement probe 2 in a detachable manner, the predetermined second diameter is provided. A ring-shaped flange plate 33 is formed so as to surround the second opening and extend radially outward, and the inner surface of the tapered portion 31 is painted white so as to diffusely reflect. Such a light shielding cylinder 3a further narrows down the opening area of the first opening 100 formed in the second housing HS2 of the measurement probe 2 to the opening area of the second opening AP, and is flattened by the flange plate 33. Used to adhere to the sample surface.

  In addition, when measuring the sample SM such as powder with the measurement probe 2, in order to prevent the powder or the like from entering the measurement probe 2, a glass plate as shown in the lower side of FIG. The attached light-shielding cylinder 3b is attached to the measurement probe 2 as an attachment AT in place of the light-shielding cylinder 3a as shown in FIG. In addition to the configuration of the light shielding tube 3a, the light shielding tube 3b with a glass plate further includes a transparent plate 34 made of, for example, glass. The transparent plate 34 is tightly fixed to the flange plate 33 with, for example, an adhesive so as to close the second opening AP.

  By mounting such a light shielding tube 3a or a light shielding tube 3b with a glass plate on the measurement probe 2 as an attachment AT, the optical property measuring apparatus D measures the sample SM with a geometry of d / 0.

And in the optical characteristic measuring apparatus D of this embodiment, in order to measure, for example, a display panel or a solar cell with the protective panel, the antireflection light-shielding cylinder ( the second mode) shown in FIGS. 5 and 6 is used. Attachment) 4a is further prepared as an attachment AT.

The antireflection light-shielding cylinder 4a of the first aspect shields external light and has a hollow columnar attachment body 41 having an inner periphery surrounding the periphery of the first opening 100 as the illumination light receiving unit 100, and the attachment body 41 A light shielding tube side mounting portion (second mounting portion) 42 for detachably mounting the antireflection light shielding tube 4 a formed at one end to the second housing HS 2 of the measurement probe 2, and the inner surface of the attachment main body 41 And a first antireflection member 43 for preventing reflection of the illumination light radiated from the integrating sphere 21 through the diffuser plate 24.

  The attachment main body 41 is, for example, a hollow columnar body having an outer shape that is the same as the outer shape of the second housing HS2 of the measurement probe 2. In the present embodiment, since the second housing HS2 has a cylindrical shape, the attachment main body 41 also has a cylindrical shape with the same outer shape. The length of the attachment body 41 in the axial direction is set to an appropriate length so that the amount of diffused light irradiated on the sample SM and the ring-shaped illumination area meet the measurement purpose. Then, the attachment main body 41 is for detection that protrudes outward in the axial direction from one end in the vicinity of the light-shielding tube side mounting portion 42 as shown in FIG. 6 in order to cause the type detection portion 26 to detect the type of the attachment AT. A protruding piece 411 is provided. By detecting the presence / absence of the detection protrusion 411 by the type detection unit 26, it is determined whether it is the antireflection light shielding cylinder 4a or the light shielding cylinders 3a, 3b. In the first aspect, the first antireflection member 43 is, for example, a black coating film formed by applying a black paint. The first antireflection member 43 can be easily formed by such a black coating film.

  By attaching the antireflection light-shielding cylinder 4a of the first aspect to the measurement probe 2 as the attachment AT, the illumination light radiated from the integrating sphere 21 via the diffusion plate 24 is applied to the inner peripheral surface of the attachment main body 41. When it reaches, the reflection is suppressed or prevented by the black coating film of the first antireflection member 43. For this reason, the sample SM is irradiated with illumination light that is emitted from the integrating sphere 21 via the diffusion plate 24 and reaches the surface of the sample SM directly. This illumination light is reflected by the sample SM and received by the tip of the optical fiber cable FC disposed in the light receiving cylinder 25. Also in the reception of the reflected light, when the reflected light reaches the inner peripheral surface of the attachment main body 41, the reflection is suppressed or prevented by the black coating film of the first antireflection member 43. For this reason, the reflected light reflected from the surface of the sample SM and directly reaching the tip of the optical fiber cable FC is received by the tip of the optical fiber cable FC.

  Thus, since the antireflection light-shielding cylinder 4a of the first aspect suppresses or prevents reflection of illumination light and reflected light by the first antireflection member 43, it is disposed in the first opening 100 of the optical characteristic measuring device D. The regular reflection component of the illumination light can be guided to the tip portion 251 of the optical fiber cable FC. For this reason, the optical characteristic measuring apparatus D can also measure panels, such as a display panel and a solar cell, provided with the said protection panel by using the antireflection light-shielding cylinder 4a of a 1st aspect.

  Therefore, since the antireflection light-shielding cylinder 4a of the first aspect is an attachment AT that can be attached to and detached from the optical property measuring device D, the optical property measuring device D is generally used by measuring without attaching the attachment AT. On the other hand, by attaching and measuring this attachment AT, the optical property measuring apparatus D can be used for a back panel such as a protective panel such as a display panel or a solar cell. Samples SM whose optical properties affect the optical properties of the surface can also be measured. As described above, the antireflection light-shielding cylinder 4a of the first aspect maintains the measurement function of the general sample SM in the optical property measuring device D by being attached to and detached from the optical property measuring device D, for example, such as a display panel or a solar cell. The optical property measuring apparatus D can also measure a sample SM such as a protective panel in which the optical properties of the back surface of the panel affect the optical properties of the front surface.

  In order to measure, for example, a display panel or a solar cell with the protection panel, the following antireflection light shielding cylinders 4b to 4e of the second to fifth aspects are used instead of the antireflection light shielding cylinder 4a of the first aspect. Either of these may be used.

  FIG. 7 is a diagram illustrating a configuration of the antireflection light-shielding cylinder of the second aspect in the optical property measuring apparatus according to the embodiment. FIG. 7A is a longitudinal sectional view, and FIG. 7B is a perspective view. FIG. 8 is a diagram illustrating a configuration of the antireflection light-shielding tube of the third aspect in the optical property measuring apparatus according to the embodiment. 8A is a longitudinal sectional view, and FIG. 8B is a perspective view of the antireflection member main body 45. As shown in FIG. FIG. 9 is a diagram illustrating a configuration of the antireflection light-shielding tube of the fourth aspect in the optical property measuring apparatus according to the embodiment. FIG. 9A is a longitudinal sectional view, and FIG. 9B is a perspective view. FIG. 10 is a longitudinal sectional view showing the configuration of the antireflection light shielding tube of the fifth aspect in the optical property measuring apparatus of the embodiment.

  As shown in FIG. 7, the antireflection light-shielding cylinder 4b of the second aspect includes an attachment main body 41 (including the detection protrusion 411), the light-shielding cylinder-side mounting portion 42, and the same as the antireflection light-shielding cylinder 4a of the first aspect. The first reflection preventing member 43 is provided, and the illumination light is provided between the peripheral edge of the first opening 100 that is the illumination light receiving unit 100 and the inner peripheral surface of the attachment main body 41. A second antireflection member 44 for preventing reflection is provided.

  In the example shown in FIG. 7, the second antireflection member 44 is a ring erected from the inner peripheral surface of the attachment main body 41 so as to surround the periphery of the first opening 100 and to extend radially inward. This is a flange plate 44 having a shape. A third opening of the flange plate 44 formed so as to surround the periphery of the first opening 100 has a diameter substantially the same as the diameter of the first opening 100. The flange plate 44 is positioned at the axial position of the attachment main body 41 substantially located at the height position of the first opening 100 when the antireflection light-shielding tube 4b of the second aspect is attached to the measurement probe 2. It is erected. The inner surface of the flange plate 44 is painted black to prevent reflection.

  Such an antireflection light-shielding cylinder 4b of the second aspect has the same effects as the antireflection light-shielding cylinder 4a of the first aspect. Furthermore, since the antireflection light-shielding tube 4b of the second aspect includes the second antireflection member 44, it is between the peripheral edge of the first opening 100 that is the illumination light receiving unit 100 and the inner peripheral surface of the attachment main body 41. The reflection at the exposed surface of the second housing HS2 of the measurement probe 2 can be prevented. Therefore, in the antireflection light-shielding tube 4b of the second aspect, the exposed surface does not affect the measurement result, and the measurement can be performed with higher accuracy.

  Further, as shown in FIG. 8, the antireflection light-shielding cylinder 4c of the third aspect includes an attachment main body 41 (including the detection projection piece 411) and a light-shielding cylinder side mounting portion similar to the antireflection light-shielding cylinder 4a of the first aspect. 42 is provided. As an anti-reflection member corresponding to the first anti-reflection member 43, the anti-reflection light-shielding cylinder 4c of the third aspect includes one end portion having an inner periphery surrounding the periphery of the first opening 100 which is the illumination light receiving unit 100. A hollow frustum-shaped antireflection member main body 45 having the other end fixed in contact with the inner peripheral surface of the other end of the attachment main body 41, and an inner surface of the antireflection member main body 45 are provided. A third antireflection member 46 for preventing reflection.

  The antireflection member main body 45 has a hollow truncated cone shape according to the second casing HS2 and the attachment main body 41 of the measurement probe 2 having a cylindrical shape. The fourth opening at one end of the antireflection member body 45 has a diameter that is substantially the same as the diameter of the first opening 100. The axial length of the antireflection member main body 45 (the height of the truncated cone) is the height of the first opening 100 when the antireflection light-shielding cylinder 4c of the third aspect is attached to the measurement probe 2. The one end portion of the antireflection member main body 45 is set so as to be substantially located at this position. Similarly to the first antireflection member 43, the third antireflection member 46 is a black coating film formed by applying a black paint, for example.

  The antireflection light-shielding cylinder 4c of the third aspect has the same effects as the antireflection light-shielding cylinders 4a and 4b of the first and second aspects. And the antireflection light-shielding cylinder 4c of this 3rd aspect can be easily manufactured by incorporating the antireflection member main body 45 in the attachment main body 41. FIG. In the anti-reflection light-shielding cylinder 4c of the third aspect, the attachment main body 41 and the anti-reflection member main body 45 can be manufactured separately, so that they can be manufactured in parallel.

  In the antireflection light-shielding tube 4c of the third aspect shown in FIG. 8, the fourth opening at one end of the antireflection member body 45 has a diameter substantially the same as the diameter of the first opening 100. One end of the antireflection member main body 45 having a diameter larger than the diameter of the first opening 100 and forming the fourth opening is in contact with the tapered portion of the second housing HS2 of the measurement probe 2. May be configured. In such a case, in order to prevent reflection on the exposed surface of the second housing HS2 of the measurement probe 2 between the periphery of the first opening 100 and the periphery of the fourth opening, A member similar to the second antireflection member 44 of the antireflection light-shielding tube 4b of the aspect may be provided so as to extend from the periphery of the fourth opening.

  Further, as shown in FIG. 9, the antireflection light shielding cylinder 4b of the fourth aspect includes an attachment main body 41 (including the detection projection piece 411) similar to the antireflection light shielding cylinder 4a of the first aspect, and the light shielding cylinder side mounting portion. 42, a first antireflection member 43, and a second antireflection member 44 similar to the antireflection light-shielding cylinder 4a of the first aspect, and further provided in the attachment body 41, which is the illumination light receiving unit 100. An optical diaphragm 47 that restricts the luminous flux of illumination light emitted from one opening 100 is provided.

  The optical aperture 47 is an aperture stop, and includes, for example, an outer cylindrical body 47a, an inner cylindrical body 47b, and one or more supports 47c as shown in FIG. The outer cylindrical body 47a has an inner diameter substantially the same as the diameter of the first opening, and is erected from the periphery of the first opening 100 along the axial direction into the attachment body 41. The second antireflection member 44 is fixed to the inner surface. The inner cylindrical body 47 b has an inner diameter that is substantially the same as the inner diameter of the light receiving cylinder 25. The support 47c is a plate-like member, and one end thereof is fixed to the inner peripheral surface of the outer cylindrical body 47a, and the other end is fixed to the outer peripheral surface of the inner cylindrical body 47b. In the example shown in FIG. 9, the support 47c is eight members provided so as to be arranged in the circumferential direction at equal intervals of approximately 45 degrees. The inner cylindrical body 47b is supported by the outer cylindrical body 47a by such a support body 47c. The length of the support 47c is set so that the position of the inner cylindrical body 47b matches the position of the light receiving cylinder 25 when the antireflection light-shielding cylinder 4d of the fourth aspect is attached to the measurement probe 2. The Thus, the light receiving cylinder 25 is extended by the inner cylindrical body 47b by adjusting the length of the support body 47c. Each surface of the outer cylindrical body 47a, the inner cylindrical body 47b, and the support body 47c is painted black to prevent reflection.

  In the optical diaphragm 47 having such a configuration, the spread in the radial direction of the illumination light emitted from the integrating sphere 21 via the diffusion plate 24 is restricted by the peripheral surfaces (side surfaces) of the outer cylindrical body 47a and the inner cylindrical body 47b. Thus, the luminous flux of the illumination light is limited. Therefore, in the optical diaphragm 47 having such a configuration, the amount of restriction of the luminous flux of the illumination light is adjusted by adjusting the lengths of the outer cylindrical body 47a and the inner cylindrical body 47b in the axial direction. The area of the area where the tip of the optical fiber cable FC observes the surface of the sample SM is regulated by the peripheral surface (side surface) of the inner cylindrical body 47b.

  Such an antireflection light-shielding cylinder 4d of the fourth aspect has the same effects as the antireflection light-shielding cylinders 4a and 4b of the first and second aspects. And since the antireflection light-shielding cylinder 4d of such a 4th aspect is equipped with the optical diaphragm 47, it can restrict | limit the light quantity and angle of the illumination light inject | emitted from the integrating sphere 21 via the diffuser plate 24. FIG.

  The fifth embodiment of the anti-reflection light-shielding cylinder 4e is subjected to an uneven process on the inner surface so that the inner surface has the unevenness in the anti-reflection light-shielding cylinders 4a to 4d of the first to fourth aspects described above. . FIG. 10 shows an antireflection light-shielding cylinder 4e according to a fifth embodiment in which an unevenness treatment is performed on the surface 48 of the black coating film 43 of the attachment body 41 with respect to the antireflection light-shielding cylinder 4d according to the fourth aspect. ing. In addition, an unevenness | corrugation process may be implemented in the inner surface front surface in 4 d of antireflection light-shielding cylinders of a 4th aspect. As described above, the unevenness treatment is performed on the inner surface, so that the prevention of reflection can be further improved.

  In the antireflection light-shielding cylinder 4 of the first to fifth aspects described above, the first antireflection member 43 is a black coating film, but is not limited thereto. Instead of the black coating film, a flocked paper in which black short hairs are planted may be used, and this flocked paper is adhered to and adhered to the inner peripheral surface of the attachment main body 41.

  Further, in the light shielding cylinder 3a, the light shielding cylinder 3b with glass plate, and the antireflection light shielding cylinder 4 of the first to fifth aspects, the optical fiber cable FC has a light receiving cylinder 25 as shown in FIG. It may be arranged in the light receiving tube 25 so as to be positioned in the middle of the axial direction of the light receiving tube, and it is also arranged in the light receiving tube 25 so that its tip is located at the tip 251 of the light receiving tube 25 as shown in FIG. May be. When the tip of the optical fiber cable FC is disposed at the tip 251 of the light receiving tube 25 as shown in FIG. 5, the sample SM can be observed over a relatively large area, as shown in FIG. When the tip portion of the optical fiber cable FC is arranged in the middle of the light receiving cylinder 25 in the axial direction, the sample SM can be observed in a relatively small area.

  Next, the operation of the optical property measuring apparatus D of the present embodiment will be described. FIG. 11 is a flowchart illustrating the measurement operation of the optical characteristic measurement apparatus according to the embodiment.

  In FIG. 11, when a power switch (not shown) is operated by the user, the power is turned on and the optical characteristic measuring device D is activated (S11). When activated, the control unit 151 of the arithmetic control unit 15 initializes each part that needs to be initialized, and controls each part according to the function. And the optical characteristic calculating part 152 of the calculation control part 15 acquires the detection result from the kind detection part 26 of the measurement probe 2 via the cable CB (S12). Next, the optical characteristic calculation unit 152 determines the type of the attachment AT attached to the measurement probe 2 based on the detection result of the type detection unit 26 (S13).

  When the light-shielding cylinder 3a or the light-shielding cylinder 3b with a glass plate is attached to the measurement probe 2, in the present embodiment, as described above, the light-shielding cylinder 3a and the light-shielding cylinder 3b with a glass plate have the detection protrusions 411. I do not prepare. For this reason, when the type detection unit 26 is a PR sensor, the type detection unit 26 does not receive the reflected light, and thus the detection result is at a low level. When the type detection unit 26 is a mechanical switch, the mechanical switch of the type detection unit 26 is not turned on, so the detection result is at a low level. On the other hand, when any one of the antireflection light shielding cylinders 4 (4a to 4e) of the first to fifth aspects is attached to the measurement probe 2, as described above, the antireflection light shielding cylinders of the first to fifth aspects are provided. 4 includes a detection projection piece 411. When the type detection unit 26 is a PR sensor, the type detection unit 26 receives the reflected light reflected by the detection projection piece 411. When the level is high and the type detection unit 26 is a mechanical switch, the mechanical switch of the type detection unit 26 is turned on by the detection protrusion 411, so the detection result is high level. As described above, since the level of the detection result output from the type detection unit 26 varies depending on the presence or absence of the detection projection piece 411, the optical characteristic calculation unit 152 applies the measurement probe 2 to the measurement probe 2 based on the detection result of the type detection unit 26. The type of attached AT can be determined.

  If the detection result of the type detection unit 26 is at a low level as a result of the determination in the process S13, the optical characteristic calculation unit 152 indicates that the attachment AT attached to the measurement probe 2 is the light shielding tube 3a or the light shielding tube with a glass plate. It determines with it being 3b (normal (diffusion type)), and each process after process S14 is performed. On the other hand, as a result of the determination in the process S13, when the detection result of the type detection unit 26 is at a high level, the optical characteristic calculation unit 152 indicates that the attachment AT attached to the measurement probe 2 is in the first to fifth modes. It determines with it being any one of the anti-reflective light-shielding cylinders 4 (light-shielding cylinder (black painting type)), and performs each process after process S21.

  In process S14, the optical characteristic calculator 152 executes the object color measurement mode. In the execution of the object color measurement mode, for example, the optical characteristic calculation unit 152 sets the light reception processing unit 16 via the control unit 151 with an amplification factor corresponding to the light shielding tube 3a and the light shielding tube with glass plate 3b, and will be described later. The calibration data (white calibration value and black calibration value) used in the colorimetric calculation 1 in step S17 is set to calibration data corresponding to the light shielding tube 3a and the light shielding tube 3b with glass plate.

  Next, in process S15, the optical characteristic calculator 152 monitors the input unit 11 and determines whether or not an instruction to start measurement has been received. This process S15 is repeated until an instruction to start measurement is received (No in S15).

  Then, when an instruction to start measurement is received (Yes in S15), in process S16, the optical characteristic calculation unit 152 controls each part of the optical characteristic measurement device D via the control unit 151 to perform measurement. More specifically, the control unit 151 causes the light source 22 of the measurement probe 2 to emit light. The light emitted from the light source 22 is diffused and reflected one or more times by the inner surface of the integrating sphere 21, reaches the diffusion plate 24, and is emitted from the integrating sphere 21 as diffused illumination light through the diffusion plate 24. The illumination light emitted from the integrating sphere 21 is irradiated onto the sample SM and reflected by the sample SM. Here, the illumination light that has reached the inner surface of the attachment AT is diffusely reflected by the inner surface because the attachment AT is the light shielding tube 3a or the light shielding tube 3b with a glass plate, and is irradiated to the sample SM and reflected by the sample SM. . When the reflected light of the illumination light reflected by the sample SM reaches the tip of the optical fiber cable FC of the light receiving cylinder 25, it enters the optical fiber cable FC and is guided to the light reception processing unit 16 by the optical fiber cable FC. The reflected light of the guided illumination light is photoelectrically converted and subjected to a predetermined pretreatment. The signal subjected to the predetermined preprocessing is output from the light receiving processing unit 16 to the arithmetic control unit 15 as a measurement result of the sample SM.

  Next, in process S <b> 17, the optical characteristic calculator 152 obtains predetermined optical characteristics in the object color measurement mode based on the measurement result of the sample SM input from the light receiving processor 16 as the colorimetric calculation 1. As described above, the optical characteristic calculation unit 152 obtains the predetermined optical characteristic according to the type of the attachment AT detected by the type detection unit 26.

  Next, in process S <b> 18, the optical characteristic calculation unit 152 displays the determined predetermined optical characteristic on the display unit 12 via the control unit 151. In step S <b> 19, the optical characteristic calculation unit 152 determines whether or not the measurement unit is instructed from the input unit 11. If the end of measurement is instructed as a result of this determination (Yes), the process ends. If the end of measurement is not instructed (No), the process returns to step S12.

  On the other hand, in the process S21, the optical characteristic calculation unit 152 executes the transparent panel measurement mode. In the execution of the transparent panel measurement mode, for example, the optical characteristic calculation unit 152 sets the light reception processing unit 16 via the control unit 151 with an amplification factor corresponding to the antireflection light-shielding cylinder 4 of the first to fifth aspects. Then, the calibration data (white calibration value and black calibration value) used in the colorimetric calculation 2 of processing S17 described later is set to calibration data corresponding to the antireflection light-shielding cylinder 4 of the first to fifth aspects. More specifically, in the case where the attachment AT is the antireflection light-shielding cylinder 4 of the first to fifth aspects, the amount of illumination light reaching the surface of the sample SM is determined by the attachment AT being shielded from the light-shielding cylinder 3a or the glass plate. Since there are few compared with the case of the cylinder 3b, the amplification factor and calibration data are adjusted accordingly.

  Next, in process S22, the optical characteristic calculation unit 152 monitors the input unit 11 and determines whether or not an instruction to start measurement has been received, as in the process S15. This process S22 is repeated until an instruction to start measurement is received (No in S22).

  When an instruction to start measurement is received (Yes in S22), in process S23, the optical characteristic calculator 152 controls each part of the optical characteristic measuring device D via the controller 151 to perform measurement. More specifically, the control unit 151 causes the light source 22 of the measurement probe 2 to emit light. The light emitted from the light source 22 is diffused and reflected one or more times by the inner surface of the integrating sphere 21, reaches the diffusion plate 24, and is emitted from the integrating sphere 21 as diffused illumination light through the diffusion plate 24. The illumination light emitted from the integrating sphere 21 is irradiated onto the sample SM and reflected by the sample SM. Here, the illumination light that has reached the inner surface of the attachment AT is suppressed or prevented from being diffusely reflected on the inner surface because the attachment AT is one of the antireflection light-shielding cylinders 4 of the first to fifth aspects. . When the reflected light of the illumination light reflected by the sample SM reaches the tip of the optical fiber cable FC of the light receiving cylinder 25, it enters the optical fiber cable FC and is guided to the light reception processing unit 16 by the optical fiber cable FC. The reflected light of the guided illumination light is photoelectrically converted and subjected to a predetermined pretreatment. The signal subjected to the predetermined preprocessing is output from the light receiving processing unit 16 to the arithmetic control unit 15 as a measurement result of the sample SM.

  Next, in process S24, the optical characteristic calculation unit 152 obtains predetermined optical characteristics in the transparent panel measurement mode based on the measurement result of the sample SM input from the light reception processing unit 16 as the color measurement calculation 2. As described above, the optical characteristic calculation unit 152 obtains the predetermined optical characteristic according to the type of the attachment AT detected by the type detection unit 26.

  Next, in process S25, the optical characteristic calculation unit 152 displays the determined predetermined optical characteristic on the display unit 12 via the control unit 151, similarly to the process S18. In step S26, the optical characteristic calculation unit 152 determines whether or not the measurement end is instructed from the input unit 11 in the same manner as in step S19. If the end of measurement is instructed as a result of this determination (Yes), the process ends. If the end of measurement is not instructed (No), the process returns to step S12.

  As described above, the optical property measurement apparatus D of the present embodiment maintains the general sample measurement function by attaching and detaching the attachment AT, and the back surface such as a panel having a protective panel such as a display panel or a solar cell. Samples whose optical properties affect the optical properties of the surface can also be measured. Then, the optical property measuring apparatus D of the present embodiment can automatically determine the type of the attachment AT by the type detector 26, and the optical property calculator 152 preferably has a predetermined optical property according to the type of the attachment AT. Can be sought.

  The present specification discloses various aspects of the technology as described above, and the main technologies are summarized below.

  An attachment for an optical characteristic measurement device according to an aspect includes an opening of the illumination light receiving unit in the optical characteristic measurement device including an illumination light receiving unit through which diffused light is emitted as illumination light and reflected light from a sample of the illumination light is incident. An attachment for an optical property measuring apparatus interposed between a surface and the surface of the sample, the hollow columnar attachment body having an inner periphery that shields external light and surrounds the periphery of the illumination light receiving unit, and the attachment A first antireflection member provided on an inner surface of the main body for preventing reflection of the illumination light, and an attachment portion for detachably attaching to the optical characteristic measuring device.

  As a result of observing and measuring, for example, a display panel and a solar cell provided with the protective panel from various angles, it has been found that a relatively stable observation result and measurement result can be obtained when observed and measured from the regular reflection direction. In such an optical characteristic measuring device attachment, since the first antireflection member is provided on the inner surface of the attachment body, the illumination light emitted from the illumination light receiving portion and reaching the inner surface of the attachment body is the first antireflection member. Since the reflection is suppressed by the member, the illumination light reaching the surface of the sample becomes direct light emitted from the illumination light receiving unit and directly reaching the surface of the sample. And since the reflected light of the illumination light (direct light) that is reflected on the surface of the sample and reaches the inner surface of the attachment body is suppressed by the first antireflection member, the illumination light that reaches the illumination light receiving unit ( The reflected light (direct light) is reflected directly from the surface of the sample and directly reaches the illumination light receiving unit (double direct light). As described above, since the attachment for an optical characteristic measurement device suppresses reflection of illumination light or reflected light by the first antireflection member, a regular reflection component of the illumination light is introduced into the illumination light receiving unit of the optical property measurement apparatus. Can be light. For this reason, the optical property measuring device can also measure a panel such as a display panel or a solar cell provided with the protective panel by using the attachment for the optical property measuring device.

  Therefore, since the attachment for an optical characteristic measuring device is an attachment that can be attached to and detached from the optical characteristic measuring device, for example, the measurement is performed by attaching the light shielding cylinder as described in Patent Document 1 (without attaching this attachment). By doing so, the optical property measuring device can suitably measure a general sample, while by attaching and measuring this attachment, the optical property measuring device can be used for, for example, a display panel or a solar cell. Samples such as a panel having a protective panel in which the optical properties of the back surface affect the optical properties of the front surface can also be measured. As described above, the attachment for an optical characteristic measuring device is provided with a protective panel used for, for example, a display panel or a solar cell while maintaining a general sample measuring function in the optical characteristic measuring device by detaching from the optical characteristic measuring device. The optical property measuring apparatus can also measure a sample such as a panel having an optical property of the back surface that affects the optical property of the front surface.

  In another aspect, in the attachment for an optical property measurement apparatus described above, the first antireflection member is a black coating film.

  In such an attachment for an optical property measuring apparatus, the first antireflection member can be easily formed by applying a black paint on the inner surface of the attachment body.

  In another aspect, in the above-mentioned attachment for an optical characteristic measuring device, a second part is provided between the periphery of the illumination light receiving unit and the inner peripheral surface of the attachment main body to prevent reflection of the illumination light. An antireflection member is further provided.

  When the surface of the optical property measuring device is exposed between the peripheral edge of the illumination light receiving unit and the inner peripheral surface of the attachment main body, it may be reflected by the exposed surface. Since the attachment for an optical property measuring device includes the second antireflection member, the exposed surface of the optical property measuring device does not affect the measurement result.

  In another aspect, in the above-described attachment for an optical property measurement device, the attachment portion is provided at one end portion of the attachment main body, and the first antireflection member is an inner periphery surrounding a periphery of the illumination light receiving portion. A hollow frustum-shaped antireflection member body having one end portion having the other end portion contacting the inner peripheral surface of the other end portion of the attachment body, and an inner surface of the antireflection member body, the illumination light And a third antireflection member for preventing the reflection.

  Such an attachment for an optical characteristic measuring device can be easily manufactured by incorporating the third antireflection member into the attachment body. And in the said attachment for optical characteristic measuring apparatuses, since an attachment main body and a 3rd antireflection member can be manufactured separately, these can be manufactured in parallel.

  In another aspect, in the attachment for an optical characteristic measuring device described above, the illumination light receiving unit is provided between a peripheral edge of the illumination light receiving unit and an inner peripheral surface of the one end of the antireflection member body, and reflects the illumination light. A fourth antireflective member for preventing is further provided.

  Since such an attachment for an optical property measuring device includes the fourth antireflection member, the exposed surface of the optical property measuring device does not affect the measurement result.

  In another aspect, the above-described attachment for an optical characteristic measurement device further includes an optical diaphragm provided in the attachment main body and restricting a luminous flux of illumination light emitted from the illumination light receiving unit.

  Since such an attachment for an optical characteristic measuring device includes an optical diaphragm, the amount and angle of illumination light emitted from the illumination light receiving unit can be limited.

  The optical characteristic measurement apparatus according to another aspect includes an illumination light receiving unit that emits diffused light as illumination light and receives reflected light from a sample of the illumination light, and receives the reflected light to receive a predetermined light. An optical property measurement main body for obtaining the optical property, and a plurality of optical property measurement device attachments that are detachable from the optical property measurement main body, and at least one of the plurality of optical property measurement device attachments includes: It is an attachment for an optical property measuring device according to any of the above.

  Such an optical characteristic measuring device is a back surface such as a panel having a protective panel such as a display panel or a solar cell while maintaining a general sample measuring function by detaching the attachment for the optical characteristic measuring device. Samples whose optical properties affect the optical properties of the surface can also be measured.

  In another aspect, in the above-described optical property measurement apparatus, the optical property measurement main body includes a type detection unit that detects the type of attached optical property measurement device attachment, and the optical property detected by the type detection unit. An optical property measuring unit that obtains the predetermined optical property according to the type of attachment for the measuring device.

  Such an optical characteristic measuring device can automatically determine the type of attachment for the optical characteristic measuring device by the type detection unit, and the optical characteristic measuring unit has a predetermined optical characteristic according to the type of attachment for the optical characteristic measuring device. It can be obtained suitably.

  This application is based on Japanese Patent Application No. 2012-228834 filed on October 16, 2012, the contents of which are included in the present application.

  In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

  According to the present invention, it is possible to provide an attachment for an optical characteristic measuring device and an optical characteristic measuring device.

Claims (6)

An optical characteristic measuring device main body that includes an illumination light receiving unit that emits diffused light as illumination light and receives reflected light from a sample of the illumination light, and receives the reflected light to obtain predetermined optical characteristics;
A plurality of optical property measuring device attachments that are detachable from the optical property measuring device body ;
The optical property measuring device main body includes a housing side attaching portion for attaching the attachment for the optical property measuring device,
The plurality of optical property measuring device attachments include a first attachment and a second attachment attached to the optical property measuring device main body instead of the first attachment,
The first attachment is formed at one end of the tapered portion, and a tapered portion formed so that the diameter gradually decreases from one end to the other end and the inner surface diffusely reflects light. A first mounting portion for detachably mounting to the housing side mounting portion of the optical characteristic measuring apparatus main body, and an opening diameter smaller than the opening diameter of the first mounting portion at the other end of the tapered portion A second opening formed,
The second attachment is a hollow columnar attachment body having an inner periphery that shields outside light and surrounds the periphery of the illumination light receiving section, and a second attachment for detachably attaching to the housing side mounting section of the optical property measuring apparatus body. 2 attachment portions, a measurement opening portion having a diameter larger than that of the second opening portion, and a first antireflection member provided on the inner surface of the hollow columnar attachment body for preventing reflection of the illumination light An optical property measuring apparatus comprising: The inner surface of the tapered portion is painted white,
The optical property measuring apparatus according to claim 1, wherein the first antireflection member of the second attachment is a black coating film. The second attachment is provided between a peripheral edge of the illumination light receiving portion and an inner peripheral surface of the hollow columnar attachment main body, and includes a ring-shaped second antireflection member for preventing reflection of the illumination light. The optical characteristic measuring device according to claim 1, further comprising: The second mounting portion is provided at one end of the hollow columnar attachment body,
The first antireflection member has a hollow frustum shape having one end portion having an inner periphery surrounding the periphery of the illumination light receiving portion and the other end portion in contact with the inner peripheral surface of the other end portion of the hollow columnar attachment body. The optical property measurement according to claim 1, further comprising: an antireflection member main body; and a third antireflection member provided on an inner surface of the antireflection member main body for preventing reflection of the illumination light. Equipment . 5. The optical diaphragm according to claim 1 , further comprising an optical diaphragm that is provided in the hollow columnar attachment main body and restricts a light flux of illumination light emitted from the illumination light receiving unit . Optical property measuring device . The optical characteristic measuring device main body includes a type detecting unit that detects the type of attached optical characteristic measuring device attachment, and the type of optical characteristic measuring device attachment detected by the type detecting unit is the first attachment. An object color measurement mode is activated when it is determined to be present, and a panel measurement mode is activated when it is determined to be the second attachment, and an optical characteristic measurement unit for obtaining optical characteristics in the activated mode is provided. The optical property measuring apparatus according to claim 1, wherein:

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