Color measurement device

Abstract

To solve the problem in which: when a spectral filter cannot be directly provided in a housing, the central axis of a diaphragm part and the central axis of an exit of light in the spectral filter are shifted from each other, which may adversely affect a measurement result.SOLUTION: A color measuring device comprises: a substrate that includes an optical filter processing light arriving from a measuring object; a diaphragm part that stops down the amount of light directed from the measuring object toward the optical filter; a frame that is arranged opposite to the substrate and to which the substrate is fixed, the frame having a shape avoiding the optical filter and in which the diaphragm part is located at a position opposite to the optical filter; and positioning means that determines the relative positions of the substrate and the frame in a direction intersecting with the central axis of the diaphragm part.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a colorimetric device that measures color based on light arriving from a measurement object. [Background technology]

[0002] Conventionally, color measurement devices that measure color based on light reaching a measurement object have been known. For example, a color measurement device measures color by directing light reaching a measurement object through a spectral filter, extracting a specific wavelength component using the spectral filter, receiving the light with a photodiode, and detecting the voltage output from the photodiode. This type of color measurement device is sometimes called a spectrophotometer. FIG. 3 of Patent Document 1 discloses an optical module configured such that light is incident on a spectral filter through an opening provided in a housing, and a predetermined wavelength component is extracted by the spectral filter and received by a light receiving element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-098258 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration described in Patent Document 1, the opening provided in the housing functions as a diaphragm that restricts the amount of light incident on the spectral filter. The light exit of the spectral filter is also formed in an opening shape, and is arranged so that the central axis of the opening provided in the housing coincides with the central axis of the light exit of the spectral filter. However, if the device configuration does not allow the spectral filter to be directly attached to the housing, the central axis of the opening that functions as the diaphragm may be misaligned with the central axis of the light outlet of the spectral filter, which may have an adverse effect on the measurement results. [Means for solving the problem]

[0005] In order to solve the above problem, the colorimetric device of the present invention is characterized by comprising: a substrate having an optical filter that processes light arriving from the object to be measured; an aperture section that reduces the amount of light traveling from the object to be measured toward the optical filter; a frame that is arranged opposite the substrate and to which the substrate is fixed, the frame having a shape that avoids the optical filter and in which the aperture section is positioned at a position opposite the optical filter; and a positioning means that determines the relative positions of the substrate and the frame in a direction that intersects with the central axis of the aperture section. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 2 is a block diagram showing the functions of the color measurement device. [Figure 2] Cross-sectional view of an optical filter. [Figure 3] FIG. 2 is a perspective view of the color measurement device as seen from above. [Figure 4] FIG. 4 is a perspective view showing the bottom of the color measurement device when the shutter unit is in a closed state. [Figure 5] FIG. 4 is a perspective view showing the bottom of the color measurement device with the shutter unit in an open state. [Figure 6] FIG. [Figure 7] FIG. 3 is a perspective view of the internal unit of the device as seen from above. [Figure 8] FIG. 3 is a perspective view of the internal unit of the device as seen from below. [Figure 9] Cross section AA of Figure 6. [Figure 10] A partial enlarged view of Figure 9. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. [Figure 16]FIG. 2 is a perspective view of a light-receiving substrate and a light-receiving substrate holding frame. [Figure 17] FIG. [Figure 18] FIG. 10 is a perspective view of the assembled state of the light collecting member, the intermediate member, and the diaphragm portion forming member. [Figure 19] FIG. 2 is an exploded perspective view of a light collecting member, an intermediate member, and an aperture portion forming member. [Figure 20] FIG. 2 is a cross-sectional perspective view of a light-receiving substrate, a light-receiving substrate holding frame, and an optical filter. [Figure 21] FIG. 2 is a perspective view of the frame assembly seen from above. [Figure 22] FIG. 2 is a perspective view of the frame assembly seen from above. [Figure 23] FIG. 2 is a perspective view of the frame assembly seen from below. [Figure 24] FIG. [Figure 25] FIG. 4 is a perspective view of a frame assembly that constitutes the fixed unit. [Figure 26] FIG. 3 is a perspective view of a frame assembly that constitutes the movable unit. [Figure 27] FIG. 3 is a perspective view of a frame assembly that constitutes the movable unit. [Figure 28] FIG. 4 is an exploded perspective view of a movable frame and a light-emitting unit board holding frame. [Figure 29] FIG. [Figure 30] FIG. [Figure 31] Cross section B-B of Figure 6. [Figure 32] FIG. 2 is a perspective view showing a connection portion between the main housing and the frame assembly. [Figure 33] FIG. 10 is a cross-sectional view of a battery holding portion according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention will be briefly described below. The color measuring device according to the first aspect is characterized by comprising: a substrate having an optical filter for processing light arriving from a measurement object; an aperture section for reducing the amount of light traveling from the measurement object toward the optical filter; a frame disposed opposite the substrate and to which the substrate is fixed, the frame having a shape that avoids the optical filter and in which the aperture section is positioned at a position opposite the optical filter; and a positioning means for determining the relative positions of the substrate and the frame in a direction intersecting the central axis of the aperture section.

[0008] According to this aspect, the position of the diaphragm unit is defined relative to the frame, and the position of the optical filter is also defined. Therefore, even if the optical filter is not directly attached to the frame, misalignment between the diaphragm unit and the optical filter can be suppressed, and appropriate color measurement results can be obtained.

[0009] The second aspect is characterized in that, in the first aspect, the housing forming the outer shell of the device has a longitudinal direction and a lateral direction when viewed from the central axis direction, the substrate has a shape extending in the longitudinal direction, the optical filter is arranged on the substrate at a position offset to one side from the center position of the substrate in the longitudinal direction, and the positioning means determines the relative position at at least one point on the one side of the center position in the longitudinal direction.

[0010] According to this aspect, the positional relationship between the substrate extending in the longitudinal direction and the frame is determined at a position close to the optical filter, thereby appropriately suppressing positional misalignment between the aperture section and the optical filter.

[0011] The third aspect is characterized in that, in the first or second aspect, the positioning means is configured to include a protrusion provided on one of the substrate and the frame, and a fitting hole provided on the other of the substrate and the frame, into which the protrusion fits. According to this aspect, the positioning means can be configured at low cost.

[0012] A fourth aspect is characterized in that, in any of the first to third aspects, it further comprises a tubular member that forms a path for light from the object to be measured to the aperture section, and the tubular member is positioned on the frame. According to this aspect, a tubular member is provided that forms a path for light from the object to be measured to the aperture section, and the tubular member is positioned on the frame, so that the relative positions of the tubular member and the aperture section are appropriately determined.

[0013] A fifth aspect is characterized in that in any one of the first to fourth aspects, the frame is made of aluminum and the surface is black anodized. According to this aspect, the frame is made of aluminum and the surface is black anodized, so that a decrease in color measurement accuracy caused by light reflection on the frame can be suppressed.

[0014] The sixth aspect is characterized in that, in any of the first to fifth aspects, the device has an internal device unit comprising an opening-forming member that is placed at the bottom of the device and has an opening formed therein for introducing light arriving from the object to be measured into the device, the substrate, and the frame, and the internal device unit comprises a fixed unit connected to the opening-forming member, a unit comprising the substrate and the frame, a movable unit that is displaceable in a first direction along the central axis relative to the fixed unit, and at least one elastic member that elastically maintains the position of the movable unit in the first direction relative to the fixed unit.

[0015] According to this aspect, the internal unit of the device is a unit comprising the fixed unit, the substrate, and the frame, and is configured to include a movable unit that is displaceable relative to the fixed unit in a first direction along the central axis, and to cushion the impact of the movable unit using the elastic member. Furthermore, since the movable unit includes the incident light processing section, the incident light processing section can be protected from impacts caused by being dropped or the like. In addition, the movable unit is equipped with the diaphragm section in addition to the incident light processing section, and the incident light processing section and the diaphragm section are configured to move together, so the relative positions of the incident light processing section and the diaphragm section are maintained, thereby suppressing a decrease in color measurement accuracy.

[0016] In addition, since the shock absorbing structure in the first direction is adopted, it is possible to suppress increases in size and cost of the device compared to a structure in which a shock absorbing structure is provided in a direction with high shock resistance. Furthermore, since the entire weight of the internal unit of the device is not placed on the elastic member, i.e., the shock-absorbing structure, and only the weight of the movable unit is placed on the elastic member, the size and cost of the elastic member can be prevented from increasing, and ultimately the size and cost of the device can be prevented from increasing.

[0017] The seventh aspect is characterized in that, in the sixth aspect, the fixed unit comprises a first unit connected to the opening forming member, a second unit located farther from the opening forming member than the first unit in the first direction and connected to the first unit with a gap between it and the first unit in the first direction, and a guide shaft extending along the first direction in the gap between the first unit and the second unit, and the movable unit comprises a guided portion interposed between the first unit and the second unit and guided by the guide shaft. According to this aspect, a device for displacing the movable unit in the first direction can be obtained with a simple structure and at low cost.

[0018] The eighth aspect is characterized in that, in the seventh aspect, the elastic member is provided between the first unit and the guided portion, and between the second unit and the guided portion, with its free length in the first direction shortened.

[0019] According to this aspect, the elastic member is arranged between the first unit and the guided portion, and between the second unit and the guided portion, with its free length in the first direction shortened, so that the elastic member is always in a compressed state, which stabilizes the position of the movable unit in the first direction and makes it less likely for the installation position of the elastic member to shift in a direction intersecting the first direction.

[0020] A ninth aspect is any one of the first to eighth aspects, wherein the optical filter is a wavelength-tunable Fabry-Perot etalon that transmits a predetermined wavelength component of incident light. It is characterized by: According to this aspect, in a configuration in which the optical filter is a wavelength-tunable Fabry-Perot etalon that transmits a predetermined wavelength component of incident light, the functional effects of any one of the first to eighth aspects described above can be obtained.

[0021] The present invention will be specifically described below. The XYZ coordinate system shown in each drawing is a Cartesian coordinate system, with the XY plane being the horizontal plane and the YZ plane being the vertical plane. The Z-axis direction is a vertical direction and is an example of a first direction that intersects with the top surface 50e and the bottom surface 50f of the color measuring device 1. The first direction is parallel to the optical axis CL, which will be described later. The Y-axis direction is perpendicular to the first direction and corresponds to the longitudinal direction of the color measurement device 1 when viewed from the Z-axis direction. The X-axis direction is perpendicular to the Y-axis direction and corresponds to the lateral direction of the color measurement device 1 when viewed from the Z-axis direction. In this specification, the configuration of the color measurement device 1 will be described assuming that the bottom surface 50f is placed on a placement surface parallel to a horizontal plane, and the longitudinal direction of the color measurement device 1 is along the Y-axis direction.

[0022] [Overall configuration of colorimeter 1] First, the overall configuration of a color measurement device 1 according to this embodiment will be outlined mainly from a functional perspective with reference to FIGS. The colorimetric device 1 has a configuration for measuring color based on light arriving from a measurement object 200. The light arriving from the measurement object 200 includes light reflected by the measurement object 200 and light emitted by the measurement object 200 itself. The colorimetric device 1 includes a bandpass filter 7, an optical filter 3, a light receiving unit 4, a capacitance detection unit 6, a light emitting unit 9, an MCU (Micro Controller Unit) 10, a wired IF (Interface) 12, a wireless communication unit 13, an operation unit 14, a display unit 15, a battery control unit 16, and a battery 17. The optical filter 3 and the light receiving section 4 constitute an incident light processing section 2 that processes the light that arrives from the measurement object 200 and is incident thereon.

[0023] Of the light arriving from and entering the measurement object 200, the bandpass filter 7 transmits light in the visible light range, for example, light between 380 nm and 720 nm, and cuts light in the ultraviolet and infrared ranges. This allows light in the visible light range to enter the optical filter 3. The light arriving at the bandpass filter 7 from the measurement object 200 is taken into the device through an opening 21a (see FIG. 5), which will be described later, and then reaches the bandpass filter 7 through a measurement window 87a (see FIG. 5).

[0024] The optical filter 3 selectively transmits a desired wavelength component from the visible light that has passed through the bandpass filter 7. The light that has passed through the optical filter 3 is incident on a photodiode 4a, which is an example of a light receiving element, and is processed by a light receiving unit 4 that also includes the photodiode 4a. The light receiving unit 4 converts the intensity of the received light into a voltage value, and further converts the voltage value into a digital signal and outputs it to the MCU 10. The colorimetric device 1 can measure the spectrum of the measurement object 200 by repeatedly selecting a wavelength using the optical filter 3 and obtaining the received light intensity using the light receiving unit 4.

[0025] The configuration of the optical filter 3 will now be described with reference to Fig. 2. In this embodiment, the optical filter 3 is a wavelength-tunable Fabry-Perot etalon that transmits a predetermined wavelength component of the light that arrives from and enters the measurement target 200, and is a wavelength filter that utilizes multiple interference between two opposing reflecting surfaces. In FIG. 2, optical filter 3 includes tunable interference filter 45 , which is housed inside an exterior formed by first glass member 30 , second glass member 31 , and case 32 .

[0026] The case 32 and the first glass member 30, and the case 32 and the second glass member 31 are respectively joined by a joining member 33 such as low-melting-point glass or epoxy resin. The tunable interference filter 45 and the case 32 are fixed by a fixing material 34 such as an adhesive. An electrode 36 on the outer surface of the case 32 and the tunable interference filter 45 are electrically connected by wire bonding 35 and wiring inside the case 32.

[0027] The tunable interference filter 45 includes a base substrate 37 and a diaphragm substrate 38. The base substrate 37 and the diaphragm substrate 38 are bonded together by a bonding film 43. Mirrors 39 are formed on the base substrate 37 and the diaphragm substrate 38, respectively. The outermost surfaces of the opposing mirrors 39 are made of a conductor. The capacitance between the opposing mirrors 39 is detected by a capacitance detection unit 6 (see FIG. 1). The capacitance detection unit 6 is composed of a CV (Capacitance to Voltage) converter, and converts the detected capacitance into a voltage value, which is then converted into a digital value and sent to the MCU 10. The distance between the opposing mirrors 39 is controlled by an electrostatic actuator configured by a fixed electrode 40 and a movable electrode 41 that are formed concentrically when viewed from the Z-axis direction and face each other.

[0028] When a voltage is applied between the facing fixed electrode 40 and movable electrode 41, an electrostatic force is generated that attracts the fixed electrode 40 and the movable electrode 41 to each other. At this time, the concentrically formed diaphragm portion 42 is deformed, and the mirror 39 of the diaphragm substrate 38 is attracted toward the base substrate 37, thereby controlling the distance between the facing mirrors 39. The wavelength of light that passes through the tunable interference filter 45 is selected in accordance with the distance between the facing mirrors 39.

[0029] During spectroscopic measurement, light from the measurement target 200 enters the optical filter 3 along the optical axis CL, moving from the second glass member 31 side to the first glass member 30 side. The optical axis CL is parallel to the Z-axis direction and is a line passing through the centers of the opening 21a (see FIG. 5), the measurement window 87a (see FIG. 5), the tunable interference filter 45, and the photodiode 4a. In particular, the opening 21a, the measurement window 87a, and the tunable interference filter 45 form perfect circles when viewed from the Z-axis direction, and the optical axis CL passes through their centers. The optical axis CL may hereinafter be referred to as the center position CL. The light incident on the optical filter 3 interferes between the opposing mirrors 39, and light of a wavelength selected according to the distance between the opposing mirrors 39 is transmitted through the tunable interference filter 45. The light transmitted through the tunable interference filter 45 passes through the opening 32a of the case 32, passes through the first glass member 30, and proceeds toward the light receiving unit 4. The opening 32a of the case 32 is a circular opening centered on the optical axis CL.

[0030] The above is the configuration of the optical filter 3. As described above, the optical filter 3 is configured so that the wavelength of light to be transmitted is selected in accordance with the distance between the opposing mirrors 39 in the wavelength-tunable interference filter 45, and therefore is vulnerable to impacts in the Z-axis direction, meaning that measurement accuracy is likely to decrease due to impacts in the Z-axis direction. On the other hand, the optical filter 3 can be said to be configured to be relatively resistant to impacts in directions intersecting the Z-axis direction.

[0031] Returning to FIG. 1, the MCU 10 is a microprocessor-based control device, and has a built-in memory in which various programs and various data required for controlling the colorimetric device 1 are stored. 2, the MCU 10 sends control information required to drive the electrostatic actuator configured by the fixed electrode 40 and the movable electrode 41 facing each other to an amplifier (not shown), and the amplifier supplies a predetermined drive voltage to the optical filter 3. The MCU 10 then compares information related to the voltage value output from the capacitance detection unit 6 with a stored value, and performs feedback control of the optical filter 3 based on the information.

[0032] The light emitting unit 9 emits light for measurement toward the measurement object 200. The light emitting unit 9 is composed of a plurality of light emitting elements, specifically a plurality of LEDs, which emit light with different wavelength distributions. The MCU 10 controls the turning on and off of the light emitting unit 9.

[0033] The wired IF 12 and the wireless communication unit 13 are components for communicating with an external device. For example, USB (Universal Serial Bus) can be used as a standard for communication via the wired IF 12. Bluetooth can be used as a standard for the wireless communication unit 13. USB and Bluetooth are registered trademarks. The MCU 10 sends various data to an external device via the wired IF 12 or the wireless communication unit 13, and receives various data from an external device. The colorimetric device 1 can charge the battery 17 by receiving power from an external device via the wired IF 12.

[0034] The operation unit 14 is made up of a power button and various operation setting buttons, and sends signals according to operations to the MCU 10. The operation unit 14 will be described in more detail later. The display unit 15 is formed by, for example, a liquid crystal panel, and displays various information such as a user interface for setting colorimetry conditions based on signals sent from the MCU 10 and colorimetry results. The shutter sensor 114 that sends a detection signal to the MCU 10 is a sensor for detecting the position of the shutter unit 110, which will be described later.

[0035] The battery 17 is a lithium ion secondary battery in this embodiment, and supplies power to each component that requires power in the colorimetric device 1. The components that receive power from the battery 17 include an incident light processing unit 2, which will be described later. The battery control unit 16 performs various controls such as charging control of the battery 17.

[0036] [Appearance of colorimeter 1] Next, the external configuration of the colorimetric device 1 will be described with reference to FIGS. The device main body 50 of the colorimetric device 1 is configured so that the outer shell is box-shaped as a whole, with a main housing 51, an upper housing 52, a first bottom housing 53A, and a second bottom housing 53B. The device internal unit 1a is provided inside the outer shell formed by these housings. In this embodiment, the upper housing 52, the first bottom housing 53A, and the second bottom housing 53B are made of a resin material, and the main housing 51 is made of aluminum. However, the main housing 51 can also be made of other metals or resin materials instead of aluminum. Furthermore, the upper housing 52, the first bottom housing 53A, and the second bottom housing 53B can also be made of aluminum or other metals instead of a resin material. In each figure, reference numeral 50a denotes the side surface of the device body 50 in the +Y direction, which will be referred to below as the front surface 50a. Reference numeral 50b denotes the side surface of the device body 50 in the +X direction, which will be referred to below as the right side surface 50b. Reference numeral 50c denotes the side surface of the device body 50 in the -X direction, which will be referred to below as the left side surface 50c. Reference numeral 50d denotes the side surface of the device body 50 in the -Y direction, which will be referred to below as the rear surface 50d. In this specification, the terms "upper," "lower," "left," and "right" are used based on the direction as seen by the user when the user holds the colorimetric device 1 with the rear surface 50d facing forward.

[0037] 3 to 6, the front surface 50a is formed by the front wall portion 51a of the main housing 51, the right side surface 50b is formed by the right wall portion 51b of the main housing 51, the left side surface 50c is formed by the left wall portion 51c of the main housing 51, and the rear surface 50d is formed by the rear wall portion 51d of the main housing 51. Reference numeral 50e denotes the surface of the device body 50 in the +Z direction, which will be referred to below as the top surface 50e. Reference numeral 50f denotes the surface of the device body 50 in the -Z direction, which will be referred to below as the bottom surface 50f.

[0038] On the top surface 50e of the device body 50, the operation unit 14 and the display unit 15 are arranged along the Y-axis direction. The operation unit 14 is configured to include a power button 55, a decision button 54, a back button 56, and a cross button 60. The cross button 60 is configured to include an up button 61, a down button 62, a left button 63, and a right button 64. In the colorimetric device 1 according to this embodiment, all operation buttons are arranged on the top surface 50e and are collected together in the operation unit 14.

[0039] The power button 55 is a button for turning on and off the power of the colorimetric device 1. The decision button 54 is a button for deciding the various settings displayed on the display unit 15, that is, a button for deciding the colorimetric conditions, and also a button for executing colorimetric measurement. The decision button 54 has a perfect circular shape when viewed from the Z-axis direction. The surrounding area of ​​the decision button 54 is configured as a ring-shaped light emitting section 59, the color and state of which light is changed depending on the state of the device.

[0040] The back button 56 is a button for returning to the previous state in the user interface displayed on the display unit 15, and is also a button for canceling the execution of an operation. The cross button 60 is a button for selecting various items in the user interface displayed on the display unit 15.

[0041] Various information such as color measurement results is displayed on the display unit 15. In this embodiment, the display unit 15 is configured by a liquid crystal display (LCD) 67 (see also FIG. 9). Hereinafter, the liquid crystal display 67 will be abbreviated as LCD 67. A display unit cover 57, which is a transparent member, is provided above the LCD 67, and this display unit cover 57 forms part of the upper surface 50e. 9, the present embodiment is configured so that there is almost no difference in level between the top surface of the display unit cover 57 and the top surface of the operation unit 14, and as a result, the top surface 50e is configured as a flat surface with almost no difference in level overall. However, the top surface of the enter button 54 is slightly recessed, and is shaped to fit comfortably with the pad of the user's finger when pressing the enter button 54.

[0042] A shutter unit 110 is provided on the bottom surface 50f as shown in Figures 4 and 5. Figure 4 shows the shutter unit 110 in a state where it is in a closed position, and Figure 5 shows the shutter unit 110 in a state where it is in an open position. The shutter unit 110 can be displaced between the closed position and the open position by sliding along the Y-axis direction. The shutter unit 110 is also provided so that it can maintain the closed position and the open position by the spring force of a spring (not shown). The shutter unit 110 is configured to include a shutter holding member 111 and a link member 113 .

[0043] By opening the shutter unit 110 from the state shown in Fig. 4, the opening 21a and the measurement window 87a are exposed as shown in Fig. 5. The opening 21a and the measurement window 87a are open in the -Z direction. The opening 21a and the measurement window 87a are openings that have a perfect circular shape in a plan view. Note that the opening here means that light is let in, and may be provided with a transparent glass plate, for example.

[0044] The opening 21a is formed in an opening forming member 21 provided at the bottom of the device, and the measurement window 87a is formed in a light collecting member 87 located in the +Z direction relative to the opening forming member 21. The opening forming member 21 has a shape that extends over the entire bottom of the device. 10, the measurement light emitted from the light-emitting unit 9 passes between the cylindrical portion 87b of the light-collecting member 87 and the opening-forming member 21, as indicated by the arrow a inside the opening 21a, and is emitted from the opening 21a toward the measurement object 200. The light arriving from the measurement object 200 is taken into the device through the opening 21a, and further passes through the measurement window 87a to enter the bandpass filter 7. The light-collecting member 87 is an example of a cylindrical member that forms a path for light from the measurement object 200 toward the diaphragm unit 89a, which will be described later.

[0045] As shown in Fig. 6, the optical axis CL coincides with the central axis of the opening 21a and the measurement window 87a. In Fig. 6, the line VCL is parallel to the Y-axis direction and passes through the optical axis CL when viewed from the Z-axis direction. The line HCL is parallel to the X-axis direction and the Y-axis direction and passes through the optical axis CL when viewed from the Z-axis direction. In this embodiment, the optical axis CL coincides with the center position of the enter button 54 and also coincides with the center position of the cross button 60 on the XY plane. The power button 55 and the back button 56 are arranged symmetrically with respect to the line VCL.

[0046] 3, a wired IF 12 is provided on the front surface 50a of the device main body 50. By providing the wired IF 12 on the front surface 50a, even when the colorimetric device 1 is used with a cable connected to the wired IF 12, the cable is not present on the user's side and is unlikely to interfere with operation. 9, an opening 50m is formed in the rear surface 50d of the device main body 50, and a reset switch 71 is provided at the back of the opening 50m. The reset switch 71 is a switch for returning various settings of the colorimetric device 1 to their initial states.

[0047] 3 and 31, grip portions 50g are formed on the right side surface 50b and the left side surface 50c of the device body 50. The grip portions 50g are configured by recesses 51g formed in each of the right wall portion 51b and the left wall portion 51c of the main housing 51. The recesses 51g are formed by a curved surface that curves toward the center of the device body 50 in the X-axis direction as it extends in the -Z direction. The grip portion 50g allows the user to grip the device body 50 easily and securely.

[0048] 5, the sides that form the periphery of the bottom surface of the device are formed by a first bottom housing 53A and a second bottom housing 53B. Side E1 in the +X direction and side E2 in the -X direction are formed linearly along the Y-axis direction, and similarly, side E3 in the +Y direction and side E4 in the -Y direction are formed linearly along the X-axis direction. This allows measurements to be performed by placing a ruler on each side and sliding the color measurement device 1 along the ruler. For the reasons mentioned above, it is preferable that the first bottom housing 53A and the second bottom housing 53B be formed from a resin material with low frictional resistance, and one example is POM (polyoxymethylene).

[0049] [Colorimeter 1 board configuration] Next, the board configuration of the color measurement device 1 will be described. 7 and 8 is an assembly provided inside the main housing 51, and is configured by assembling a battery, multiple circuit boards, etc. to a frame assembly 100, which is an assembly of multiple frames. However, the panel board 65 located at the top is not shown in FIGS. 7 and 8. 9, the multiple circuit boards are configured, from top to bottom, by a panel board 65 as the "fourth circuit board," a battery control board 70 as the "third circuit board," a light-receiving board 80 as the "first circuit board," and a light-emitting board 85 as the "second circuit board." These multiple circuit boards are arranged so as to overlap with each other at intervals along the Z-axis direction. A battery 17 is disposed between the panel board 65 and the battery control board 70 in the Z-axis direction.

[0050] Each circuit board and its peripheral configuration will be described below. Note that, below, the +Z side of each circuit board may be referred to as the "upper side," and the -Z side as the "lower side." 9 and 11, the panel substrate 65 has an LCD connection section 66 on its upper surface. The LCD 67 is connected to the LCD connection section 66 by a cable 67a.

[0051] Furthermore, on the upper surface of the panel substrate 65, contacts for detecting pressing of each operation button are provided at positions corresponding to each operation button constituting the above-mentioned operation unit 14. In Fig. 9, reference numeral 54a denotes a contact provided at a position corresponding to the enter button 54. Reference numerals 61a and 62a denote contacts provided at positions corresponding to the up button 61 and the down button 62, respectively. Furthermore, in Fig. 11, reference numeral 56a denotes a contact provided at a position corresponding to the back button 56, and reference numeral 63a denotes a contact provided at a position corresponding to the left button 63. Note that contacts not shown in Figs. 9 and 11, i.e., contacts corresponding to the right button 64 and the power button 55, are also provided on the upper surface of the panel substrate 65.

[0052] 11, a sheet material 69 is provided between each contact provided on the upper surface of panel substrate 65 and each button constituting operation unit 14. Sheet material 69 provides a waterproof function to each contact provided on the upper surface of panel substrate 65, thereby maintaining the function of each contact. For example, a rubber sheet can be used as sheet material 69. 9, a wireless communication unit 13, which is a communication module, is provided on the underside of the panel substrate 65. The wireless communication unit 13 is arranged so as to enter the inside of the battery holding portion 100a (see FIG. 7), which will be described later, through a cutout portion 100b formed in the battery holding portion 100a, as shown in FIG. The panel substrate 65 is connected to a light receiving substrate 80 (described later) by a cable (not shown).

[0053] Next, the battery control board 70 realizes the function of the battery control unit 16 (see FIG. 1). As shown in FIGS. 7 and 13, the battery control board 70 has a reset switch 71 and a wired IF 12 on its top surface. The battery control board 70 also has a first battery connector 72 on its top surface. As shown in FIG. 7, a first connector 17c attached to a first battery cable 92 extending from the battery 17 is fitted into the first battery connector 72. The battery control board 70 also has a second battery connector 73 on its top surface as shown in FIG. 8. A second connector 17d attached to a second battery cable 93 extending from the battery 17 is fitted into the second battery connector 73. Furthermore, a battery control circuit (not shown) is provided on the upper surface of the battery control board 70. The battery control board 70 is connected to the light receiving board 80 and the light emitting board 85 by connecting means (not shown), thereby supplying power from the battery 17 to each board.

[0054] Next, the light receiving substrate 80 is provided with a PD (Photo The PD substrate 5 includes a photodiode 4a on its bottom surface. The PD substrate 5 is a circuit board that constitutes the light receiving unit 4 (see FIG. 1). In other words, the PD substrate 5 constitutes the incident light processing unit 2 (see FIG. 1) that processes incident light. The light receiving substrate 80 also has an optical filter 3 on the bottom surface as shown in FIG.

[0055] Furthermore, various electronic components are provided on the light receiving board 80, including an MCU 10 (see Figure 1), a CV converter that constitutes the capacitance detection unit 6 (see Figure 1), a DC / DC converter that converts the voltage of the battery 17, an amplifier that adjusts the output from this DC / DC converter under the control of the MCU 10 and supplies it to the optical filter 3, and a temperature sensor for detecting the temperature around the optical filter 3.

[0056] Next, the light-emitting section substrate 85 has a plurality of light-emitting elements 86 provided on its underside as shown in Fig. 12. The light-emitting elements 86 constitute the light-emitting section 9 (see Fig. 1). The plurality of light-emitting elements 86 are composed of light-emitting elements that emit light with different wavelength distributions. The light-emitting section substrate 85 has a hole through which the cylindrical portion 87b of the light-collecting member 87 is inserted, and the plurality of light-emitting elements 86 are provided along the periphery of this hole.

[0057] [Frame configuration of the internal unit of the device] Next, the frame assembly 100 that constitutes the base of the internal unit 1a will be described. 7, 8, and 21 to 24, the frame assembly 100 is configured to include a first battery holding frame 101, a second battery holding frame 102, a light receiving board holding frame 103, a light emitting board holding frame 104, a movable frame 105, and a bottom frame 106. In this embodiment, the frames are assembled with screws.

[0058] In this embodiment, all the frames are formed by bending a metal material, and aluminum is used as the material, for example. However, instead of bending a metal material, each frame can also be formed by die-casting or the like.

[0059] Each frame will be described below in order. The first battery holding frame 101 is a frame that constitutes the battery holding section 100a, and has a first vertical section 101a that forms a frame surface parallel to the YZ plane, a horizontal section 101b that forms a frame surface parallel to the XY plane, and a second vertical section 101c that forms a frame surface parallel to the YZ plane. Of these, the horizontal portion 101b supports the panel substrate 65 from below, as shown in Figure 9. The panel substrate 65 is fixed to the horizontal portion 101b with screws (not shown). The panel substrate 65 is in surface contact with the horizontal portion 101b, which allows heat from the panel substrate 65 to be transferred to the horizontal portion 101b, i.e., the first battery holding frame 101. 9, a battery restricting portion 101f is formed at the end of the horizontal portion 101b in the +Y direction so as to extend from the horizontal portion 101b in the -Z direction. The battery restricting portion 101f restricts movement of the battery 17 in the +Y direction.

[0060] Next, the second battery holding frame 102 constitutes a battery holding portion 100a together with the first battery holding frame 101. Screws Z1 and Z2 are used to assemble the first battery holding frame 101 and the second battery holding frame 102 together. The second battery holding frame 102 has a battery support portion 102a that forms a frame surface parallel to the XY plane, a first vertical portion 102b that forms a frame surface parallel to the YZ plane, and a second vertical portion 102c that forms a frame surface parallel to the YZ plane.

[0061] The battery support portion 102a supports the battery 17 from below. The bottom surface of the battery 17 is in surface contact with the battery support portion 102a, so that heat from the battery 17 is transferred to the battery support portion 102a, i.e., the battery holding portion 100a. The battery support portion 102a is formed with a battery positioning portion 102d by bending and raising, which is configured to determine the position of the battery 17 in the X-axis direction.

[0062] The first vertical portion 102b is located in the -X direction relative to the first vertical portion 101a of the first battery holding frame 101 and is in surface contact with the first vertical portion 101a. The second vertical portion 102c is located in the -X direction relative to the second vertical portion 101c of the first battery holding frame 101 and is in surface contact with the second vertical portion 101c.

[0063] In this manner, the battery holding portion 100a is configured so that the first battery holding frame 101 and the second battery holding frame 102 surround the battery 17. In the battery holding portion 100a, an elastic member 28 is provided between the horizontal portion 101b and the battery 17, as shown in Fig. 9. The elastic member 28 is also interposed between the first end 17a, which is the end of the battery 17 in the +Y direction, and the battery restricting portion 101f. The elastic member 28 is also interposed between the second end 17b, which is the end of the battery 17 in the -Y direction, and the rear inner wall surface 51f of the main housing 51. This restricts the position of the battery 17 in the Y direction within the battery holding portion 100a. The elastic member 28 can be, for example, a sponge.

[0064] 31, the battery support portion 102a constitutes a first wall portion W1 that supports the battery 17 from below. The horizontal portion 101b faces the battery support portion 102a and constitutes a second wall portion W2 located above the battery 17. The battery holding portion 100a also has a third wall portion W3 and a fourth wall portion W4 located on either side of the battery 17 so as to sandwich the battery 17. Of these, the third wall portion W3 is composed of the second vertical portion 101c and the second vertical portion 102c, and the fourth wall portion W4 is composed of the first vertical portion 101a and the first vertical portion 102b. In addition, in Figure 31, on the inside of the battery holding portion 100a, there are formed a first corner C1 where the first wall portion W1 and the third wall portion W3 intersect, a second corner C2 where the first wall portion W1 and the fourth wall portion W4 intersect, a third corner C3 where the second wall portion W2 and the fourth wall portion W4 intersect, and a fourth corner C4 where the second wall portion W2 and the third wall portion W3 intersect.

[0065] 7, the internal unit 1a includes a fixed unit 1b and a movable unit 1e. The fixed unit 1b is a unit body fixed to the main housing 51 and the opening forming member 21 (see FIG. 9), and the movable unit 1e is a unit body provided so as to be displaceable in the Z-axis direction relative to the fixed unit 1b. The fixed unit 1b includes a first unit 1c connected to the opening forming member 21, and a second unit 1d located farther from the opening forming member 21 than the first unit 1c in the Z-axis direction and connected to the first unit 1c with a gap between them in the Z-axis direction. Of these, the second unit 1d is composed of a battery holding portion 100a and a battery 17. The first unit 1c is composed of a bottom frame .

[0066] FIG. 25 shows a frame assembly constituting the fixed unit 1b, and the frame assembly constituting the fixed unit 1b is configured by connecting a battery holding portion 100a and a bottom frame 106. More specifically, the bottom frame 106 is formed to include a base portion 106a that forms a frame surface parallel to the YZ plane, and a guide support portion 106b that forms a frame surface parallel to the XY plane.

[0067] Two guide shafts 107 are fixed to the guide support portion 106b. In this embodiment, the guide shafts 107 are metal shafts extending along the Z-axis direction and are fixed by crimping into holes (not shown) formed in the guide support portion 106b. The guide shafts 107 extend in the +Z direction from the guide support portion 106b to a position where the end portion in the +Z direction is approximately flush with the upper surface of the battery support portion 102a. The battery support portion 102a is formed with holes (not shown) through which the guide support portions 106b are inserted.

[0068] The guide support portion 106b has three screw holes (not shown) for fixing screws Z6 (see Figure 24), and the three screws Z6 are fixed into the screw holes with the pipes 108 inserted therethrough, thereby connecting the battery holding portion 100a and the bottom frame 106. In this embodiment, the pipe 108 is a metal pipe, and defines the distance in the Z-axis direction between the battery holding part 100a and the bottom frame 106. Heat is also transferred between the battery holding part 100a and the bottom frame 106 by the pipe 108 and the screw Z6.

[0069] In this way, the battery holding portion 100a and the bottom frame 106 are connected with a gap in the Z-axis direction, that is, the first unit 1c and the second unit 1d are connected with a gap in the Z-axis direction. In this specification, unless otherwise specified, the term "screw hole" refers to a hole in which a spiral groove is formed for fixing a screw, and the term "screw insertion hole" refers to a hole in which no spiral groove is formed and which is simply for inserting a screw, unless otherwise specified.

[0070] Next, in bottom frame 106, bent portion 106c is formed so as to extend in the -X direction from the -Y direction end of base portion 106a, and connecting portion 106e is formed so as to extend in the +Y direction from bent portion 106c. Similarly, bent portion 106d is formed so as to extend in the -X direction from the +Y direction end of base portion 106a, and two connecting portions 106f are formed so as to extend in the -Y direction from bent portion 106d (see also FIG. 23). The opening forming member 21 is then fixed to the connecting portions 106e and 106f with screws. For example, the screw indicated by reference symbol Z14 in Fig. 9 is a screw that fixes the opening forming member 21 to the connecting portion 106e. In this embodiment, the screw Z14 fixes the two members, the first bottom housing 53A and the opening forming member 21, to the connecting portion 106e. The opening forming member 21 is fixed to the connecting portion 106f at the end in the +Y direction with a screw (not shown). In this embodiment, the opening-forming member 21 is made of a metal material, for example, aluminum. This allows heat from the bottom frame 106 to be transferred to the opening-forming member 21. Because the bottom frame 106 is connected to the battery holding part 100a via pipes 108 and screws Z6 (see FIG. 24), heat generated in the battery 17 is also released to the outside of the device via the bottom frame 106 and the opening-forming member 21. The opening forming member 21 can also be made of a resin material.

[0071] Next, the configuration of the movable unit 1e that constitutes the internal unit 1a will be described with reference mainly to FIGS. 12, 13, and 26 to 29, and also to other figures as necessary. In Figures 12 and 13, the movable unit 1e has a base formed by a movable frame 105, a light-receiving unit board holding frame 103, and a light-emitting unit board holding frame 104, on which are mounted multiple boards: a battery control board 70, a light-receiving unit board 80, and a light-emitting unit board 85.

[0072] 26, 27, and 28, movable frame 105 includes frame fixing portion 105a forming a frame surface parallel to the YZ plane, and guided portion 105b forming a frame surface parallel to the XY plane. Frame fixing portion 105a has both the -Y direction end and the +Y direction end bent toward the +X direction to form bent portion 105f, and bent portion 105f has substrate support portion 105g formed therein and forming a frame surface parallel to the XY plane.

[0073] 12 and 13, the board support portion 105g supports the battery control board 70. The battery control board 70 is fixed to the board support portion 105g with two screws Z10. The battery control board 70 and the board support portion 105g are in surface contact with each other, which allows heat from the battery control board 70 to be transferred to the movable frame 105. The guided portion 105b is formed with three pipe insertion holes 105c and two guided holes 105d, which will be explained later.

[0074] Next, as shown in Figure 29, the light-emitting unit substrate holding frame 104 has a base portion 104f that forms a frame surface parallel to the XY plane, and frame support portions 104a and 104b that form frame surfaces parallel to the XY plane and are formed at a position one step higher in the +Z direction than the base portion 104f. An opening 104e and a screw insertion hole 104g are formed in the base portion 104f. The opening 104e serves to pass the light collecting member 87 in the -Z direction (see FIG. 12). The light emitting unit substrate 85 is fixed to the underside of the base portion 104f with three screws Z12 (see FIG. 12). The light emitting unit substrate 85 and the base portion 104f are in surface contact, which allows heat from the light emitting unit substrate 85 to be transferred to the light emitting unit substrate holding frame 104.

[0075] Furthermore, a connecting portion 104d that forms a frame surface parallel to the YZ plane is formed at the end of the base portion 104f in the -X direction. Similarly, a connecting portion 104c that forms a frame surface parallel to the YZ plane is formed at the end of the frame support portion 104a in the -X direction. The connecting portions 104c and 104d are fixed to the frame fixing portion 105a of the movable frame 105 by screws Z3 (see FIG. 26). The connecting portions 104c and 104d are in surface contact with the frame fixing portion 105a, whereby heat from the light-emitting portion board holding frame 104 is transferred to the movable frame 105.

[0076] The frame supports 104a and 104b support the light-receiving board holding frame 103 as shown in Fig. 27. The screw indicated by the symbol Z4 is a screw that fixes the light-receiving board holding frame 103 to the frame support 104a. The screw Z5 shown in Fig. 27 will be explained later. The light receiving board holding frame 103 is in surface contact with the frame support parts 104 a and 104 b, and thus heat from the light receiving board holding frame 103 is transferred to the light emitting board holding frame 104 .

[0077] 15, 16, and 17, the light-receiving substrate holding frame 103 has a base portion 103a that forms a frame surface parallel to the XY plane, and substrate support portions 103f and 103g that are formed at a position one step higher in the +Z direction from the base portion 103a. The substrate support portions 103f and 103g support the light-receiving substrate 80. The substrate support portions 103f and 103g are in surface contact with the light-receiving substrate 80, which allows heat from the light-receiving substrate 80 to be transferred to the light-receiving substrate holding frame 103. An opening 103b, a positioning hole 103c, and an elongated hole 103d that is long in the X-axis direction are formed in a base portion 103a of the light-receiving portion substrate holding frame 103. Furthermore, a screw hole 103k and a protrusion 103h are formed in a substrate support portion 103f, and a screw hole 103m and a protrusion 103j are formed in a substrate support portion 103g.

[0078] 14, a positioning hole 80a and a screw insertion hole 80b are formed at the end of the light-receiving unit substrate 80 in the +Y direction. The positioning hole 80a is fitted with a protrusion 103h of the light-receiving unit substrate holding frame 103. A screw Z11 (see FIG. 13) that fixes the light-receiving unit substrate 80 to the substrate support part 103f is inserted through the screw insertion hole 80b. 14, the light-receiving unit substrate 80 has a screw insertion hole 80c and an elongated hole 80d that is long in the Y-axis direction formed at its end in the -Y direction. A screw Z11 (see FIG. 13) that fixes the light-receiving unit substrate 80 to the substrate support part 103g is inserted through the screw insertion hole 80c. A protrusion 103j of the light-receiving unit substrate holding frame 103 is fitted into the elongated hole 80d.

[0079] The positions of the light-receiving board holding frame 103 and the light-receiving board 80 in the X-axis direction are determined by the fit of the convex portions 103h into the positioning holes 80a and the fit of the convex portions 103h into the elongated holes 80d. Note that, because the elongated holes 80d are long in the Y-axis direction, the positions of the light-receiving board holding frame 103 and the light-receiving board 80 in the Y-axis direction are determined by the fit of the convex portions 103h into the positioning holes 80a. As described above, the positioning hole 80a and the convex portion 103h, and the long hole 80d and the convex portion 103j constitute a positioning means 90 that determines the relative positions of the light receiving unit substrate 80 and the light receiving unit substrate holding frame 103 in a direction intersecting the Z-axis direction.

[0080] 15, the diaphragm portion forming member 89, the intermediate member 88, and the light collecting member 87 are positioned on the light receiving substrate holding frame 103. In this embodiment, the diaphragm portion forming member 89, the intermediate member 88, and the light collecting member 87 are all made of a black resin material. 18 and 19, these three members are positioned by a first protrusion 87d and a second protrusion 87e formed on the light collecting member 87. The first protrusion 87d is inserted through a positioning hole 88b formed in the intermediate member 88, and further through a positioning hole 89b formed in the diaphragm portion forming member 89. The second protrusion 87e is inserted through an elongated hole 88c formed in the intermediate member 88, and further through an elongated hole 89c formed in the diaphragm portion forming member 89.

[0081] Here, since the elongated holes 88c and 89c are elongated holes that are long in the X-axis direction, the relative positions of the three members in the X-axis direction are determined by inserting the first protrusion 87d into the positioning holes 88b and 89b. The relative positions of the three members in the Y-axis direction are determined by the first protrusion 87d and the second protrusion 87e. The first protrusion 87d fits into a positioning hole 103c (see FIGS. 15 and 17) formed in the light-receiving board holding frame 103, thereby defining the positions of the above three members and the light-receiving board holding frame 103 in the X-axis and Y-axis directions. The second protrusion 87e fits into an elongated hole 103d formed in the light-receiving board holding frame 103. Because the elongated hole 103d is elongated in the X-axis direction, the fit between the second protrusion 87e and the elongated hole 103d defines the positions of the above three members and the light-receiving board holding frame 103 in the Y-axis direction.

[0082] 19, a screw insertion hole 89d is formed in the diaphragm-forming member 89, a screw insertion hole 88d is formed in the intermediate member 88, and a screw insertion hole 87f is formed in the light-collecting member 87. Screw Z5 (see FIG. 27) is inserted through these screw insertion holes and a screw insertion hole 104g (see FIG. 29) formed in the light-emitting unit board holding frame 104, and the screw Z5 is fitted into a screw hole 103e in the light-receiving unit board holding frame 103, whereby the above three members are fixed to the light-emitting unit board holding frame 104 and the light-receiving unit board holding frame 103. As shown in Figure 18, the light-collecting member 87 has a first base portion 87c and a disk-shaped second base portion 87g formed on it, and this second base portion 87g fits into an opening 104e (see Figure 29) formed in the light-emitting portion substrate holding frame 104.

[0083] Next, the diaphragm-forming member 89 has a disk-shaped convex portion 89e formed thereon, as shown in Fig. 19, with an diaphragm portion 89a formed at the center thereof. The diaphragm portion 89a has a perfect circular shape when viewed from the Z-axis direction, and functions as an diaphragm portion that narrows down the amount of light that passes through the bandpass filter 7 and travels toward the optical filter 3 (incident light processing portion 2) as shown in Fig. 10. The light-receiving unit substrate holding frame 103 is a frame that is disposed opposite the light-receiving unit substrate 80 and has substrate support portions 103f and 103g formed at a position one step higher in the +Z direction than the base portion 103a, thereby avoiding the optical filter 3, and is an example of a frame to which the diaphragm-forming member 89 and the light-receiving unit substrate 80 are fixed. The protrusion 89e fits into an opening 103b formed in the light-receiving substrate holding frame 103 (see FIGS. 15 and 17).

[0084] 20 and 10, the gap between the light-receiving board holding frame 103 and the optical filter 3 is filled with a plastic member 8. That is, because the application of an external force in the Z-axis direction to the optical filter 3 adversely affects the color measurement results, it is necessary to form a gap between the light-receiving board holding frame 103 and the optical filter 3 so that the light-receiving board holding frame 103 does not come into contact with the optical filter 3. However, if the light-receiving board holding frame 103 is subjected to an impact due to being dropped, for example, there is a risk that the members that make up the optical filter 3 will peel off in the Z-axis direction. From this perspective, it is conceivable to form a gap between the light-receiving board holding frame 103 and the optical filter 3 and to interpose an elastic member or the like in the gap, but an elastic member would always be subject to external force acting on the optical filter 3, which is not preferable.

[0085] Based on this viewpoint, in this embodiment, the gap between the light-receiving unit substrate holding frame 103 and the optical filter 3 is filled with a plastic member 8. This makes it difficult for external forces to act on the optical filter 3 under normal circumstances, and allows the plastic member 8 to support the optical filter 3 when an impact is applied, thereby preventing the members that make up the optical filter 3 from peeling off. The plastic member 8 may be made of, for example, acrylic gel.

[0086] Next, the movable unit 1e configured as described above is configured so that the guided portion 105b of the movable frame 105 fits between the first unit 1c and the second unit 1d that make up the fixed unit 1b, as shown in Fig. 8. With the guided portion 105b fitted between the first unit 1c and the second unit 1d, a pipe 108 is passed through a pipe insertion hole 105c (see Figs. 12 and 26) formed in the guided portion 105b, and a guide shaft 107 is passed through guided holes 105d and 105e (see Figs. 12 and 26) formed in the guided portion 105b.

[0087] This allows the movable frame 105, ie, the movable unit 1e, to be displaced along the Z-axis direction relative to the fixed unit 1b. Furthermore, the inner diameter of the pipe insertion hole 105c is formed to be larger than the outer diameter of the pipe 108, so that the contact between the pipe 108 and the pipe insertion hole 105c does not provide significant resistance to the displacement of the movable unit 1e. Unlike guided hole 105d, guided hole 105e is formed in an elliptical shape that is slightly elongated in the Y-axis direction. As a result, the position of movable unit 1e in the Y-axis direction relative to fixed unit 1b is determined by the fit of guided hole 105d and guide shaft 107. The position of the movable unit 1e in the X-axis direction relative to the fixed unit 1b is determined by the insertion of the guide shaft 107 into the guided hole 105d and the insertion of the guide shaft 107 into the guided hole 105e.

[0088] 9 and 31, elastic members 95 are provided between the guided portion 105b and the first unit 1c, and between the guided portion 105b and the second unit 1d. In the assembled state, the elastic members 95 are provided with their free lengths shortened, and exert a pressing force between the guided portion 105b and the first unit 1c, and also exert a pressing force between the guided portion 105b and the second unit 1d, thereby maintaining the position of the movable unit 1e in the Z-axis direction relative to the fixed unit 1b. When an impact in the Z-axis direction is applied to the internal unit 1a, the elastic force of the elastic members 95 absorbs the impact on the movable unit 1e.

[0089] The elastic member 95 may be made of, for example, polyurethane foam. It is preferable to select the thickness in the Z-axis direction, hardness, and area in the XY plane of the elastic member 95 so that when the device internal unit 1a is subjected to vibration or impact or is left unused for a long period of time, no gaps without the elastic member 95 intervening are formed between the guided portion 105b and the first unit 1c, and between the guided portion 105b and the second unit 1d.

[0090] [Connection structure between the device's internal unit and the housing] Next, the connection structure between the internal unit 1a and the housing will be described. 32, unit fixing portions 51m and 51n, which form surfaces parallel to the XY plane, are provided on the inside of the upper portion of the main housing 51. A contact portion 101d (see FIG. 7) formed on the first battery holding frame 101 is fixed to the unit fixing portion 51m with a screw Z9. The contact portion 101d forms a surface parallel to the XY plane and is in surface contact with the unit fixing portion 51m. Similarly, a contact portion 101e (see FIG. 7) formed on the first battery holding frame 101 is fixed to the unit fixing portion 51n with a screw Z9. The contact portion 101e forms a surface parallel to the XY plane and is in surface contact with the unit fixing portion 51n. As a result of the above, the internal unit 1 a is connected to the main housing 51 so as to be held at the top of the main housing 51 .

[0091] An upper housing 52 (see Figure 3) that surrounds the operation unit 14 and display unit 15 at the top of the colorimetric device 1 is fixed to the main housing 51 by screws Z15 (see Figure 11) that fit into screw holes 51p formed at the four corners at the top of the main housing 51. Furthermore, the opening forming member 21 (see FIGS. 5 and 9) that constitutes the bottom of the colorimetric device 1 is fixed with screws to the connecting portions 106f and 106e (see FIG. 23) of the bottom frame 106 that is provided at the bottom of the device internal unit 1a as described above. Furthermore, the first bottom housing 53A that constitutes the periphery of the bottom of the colorimetric device 1 is also fixed with screws to the bottom frame 106 with screws Z14 and the like shown in FIG. 9. The second bottom housing 53B is fixed to the bottom frame 106 together with the opening forming member 21 with screws Z13 shown in FIG. 9.

[0092] 9, i.e., the connection portion between the main housing 51 and the upper housing 52, the main housing 51 and the upper housing 52 are configured to overlap alternately in a direction from the outside of the device toward the inside of the device (see also FIG. 11). Similarly, the connection portion between the main housing 51 and the first bottom housing 53A and the connection portion between the main housing 51 and the second bottom housing 53B are configured to overlap alternately in a direction from the outside of the device toward the inside of the device. This makes it possible to prevent dust and light from entering the inside of the device from the outside. Furthermore, the position where the wired IF 12 is placed in the main housing 51 is formed as an opening, which may allow dust, etc. or light to enter the inside of the device from outside the device, but a cover member 27 is provided at the position where the wired IF 12 is placed, and this cover member 27 prevents dust, etc. or light from entering the inside of the device.

[0093] [Characteristic configuration and effects of color measurement devices] The characteristic configuration and effects of the color measurement device 1 configured as above will be described below. First, a description will be given mainly with reference to FIG. 7. The internal unit 1a includes a fixed unit 1b connected to the main housing 51 and the opening-forming member 21, and an incident light processing section 2. The internal unit 1a includes a movable unit 1e that is displaceable relative to the fixed unit 1b in the Z-axis direction along the optical axis of light traveling from the opening 21a toward the incident light processing section 2, and at least one elastic member 95 (see FIGS. 9 and 31) that elastically maintains the position of the movable unit 1e relative to the fixed unit 1b in the Z-axis direction. The elastic member 95 is configured to cushion impacts to the movable unit 1e in the Z-axis direction. This makes it difficult for misalignment to occur between the opening 21a and the incident light processing section 2 in a direction intersecting the Z-axis direction, and allows for appropriate color measurement results to be obtained even with an impact cushioning structure that cushions impacts on the incident light processing section 2.

[0094] In addition, by adopting a shock absorbing structure for the Z-axis direction, it is possible to suppress increases in the size and cost of the device compared to a configuration in which a shock absorbing structure is provided in a direction with high shock resistance as well. In this embodiment, the direction with high shock resistance is a direction intersecting the Z-axis direction. Furthermore, since the entire weight of the internal unit 1a of the device is not placed on the shock absorbing structure, i.e., the elastic member 95, and only the weight of the movable unit 1e is placed on the elastic member 95, the size and cost of the elastic member 95 can be prevented from increasing, and ultimately the size and cost of the device can be prevented from increasing.

[0095] 9 and 31 may be omitted, and only the lower elastic member 95 may be provided. This makes it possible to suppress the impact in the Z-axis direction that is applied to the movable unit 1e when the device is dropped with the bottom surface 50f facing downwards.

[0096] Furthermore, fixed unit 1b includes first unit 1c connected to opening-forming member 21, second unit 1d located farther from first unit 1c in the Z-axis direction than first unit 1c and connected to first unit 1c with a gap between them in the Z-axis direction, and guide shaft 107 extending along the Z-axis direction between first unit 1c and second unit 1d. Movable unit 1e includes guided portion 105b interposed between first unit 1c and second unit 1d and guided by guide shaft 107. This makes it possible to obtain a device that allows movable unit 1e to be displaced in the Z-axis direction with a simple structure and at low cost.

[0097] Furthermore, the elastic member 95 is provided between the first unit 1c and the guided portion 105b, and between the second unit 1d and the guided portion 105b, with its free length in the Z-axis direction shortened. This keeps the elastic member 95 in a constantly compressed state, stabilizing the position of the movable unit 1e in the Z-axis direction and making it difficult for the installation position of the elastic member 95 to shift in a direction intersecting the Z-axis direction.

[0098] 30, the position P2 of the center of gravity of the elastic member 95 when viewed from the Z-axis direction is located at a position corresponding to the position P1 of the center of gravity of the movable unit 1e. As a result, when the movable unit 1e is displaced along the Z-axis direction against the elasticity of the elastic member 95, a force intersecting the Z-axis direction is less likely to be generated on the movable unit 1e. This allows the movable unit 1e to be displaced smoothly along the Z-axis direction. Furthermore, the fact that the center of gravity position P2 of the elastic member 95 is at a position corresponding to the center of gravity position P1 of the movable unit 1e does not necessarily mean that the center of gravity positions P2 and P1 are perfectly aligned when viewed from the Z-axis direction, but rather that they may be slightly misaligned within a range that can achieve the above-mentioned functional effects.

[0099] Furthermore, as shown in FIG. 7, the battery 17, which is the power supply source for the device, is provided in the fixed unit 1b, so that the weight of the battery 17, which is a heavy object, is not placed on the elastic member 95, i.e., the shock-absorbing structure, and this prevents the elastic member 95 from becoming larger and more costly, which in turn prevents the device from becoming larger and more costly.

[0100] Furthermore, as shown in Figure 9, the light-emitting unit board 85, the light-receiving unit board 80, the battery control board 70, and the panel board 65 are arranged so as to overlap in the Z-axis direction from the opening forming member 21 toward the display unit 15, thereby reducing the device dimensions in the direction intersecting the Z-axis direction.

[0101] It should be noted that the configuration in which the internal unit 1a is composed of a fixed unit 1b and a movable unit 1e, and the position of the movable unit 1e relative to the fixed unit 1b is maintained by the elasticity of the elastic member 95, can also be adopted in other electronic devices. Such electronic devices include a housing that forms the outer shell of the device, and an internal unit provided inside the housing, and the internal unit includes a fixed unit connected to the housing, a movable unit that is displaceable in a predetermined direction relative to the fixed unit, and at least one elastic member that elastically maintains the position of the movable unit in the predetermined direction relative to the fixed unit.

[0102] 15 and 16, the light-receiving unit substrate holding frame 103 is disposed opposite the light-receiving unit substrate 80 and is a frame shaped to avoid the optical filter 3. The light-receiving unit substrate holding frame 103 positions the diaphragm-forming member 89, i.e., the diaphragm unit 89a. If the optical filter 3 could be mounted directly on the light receiving unit substrate holding frame 103, the relative position in the XY plane between the opening 32a (see Figure 2) of the optical filter 3 and the diaphragm portion 89a would be accurately determined. However, the optical filter 3 is a component that is mounted on a substrate and cannot be mounted directly on the light receiving unit substrate holding frame 103. However, in this embodiment, the relative positions of the light receiving unit substrate 80 equipped with the optical filter 3 and the light receiving unit substrate holding frame 103 in the direction intersecting the central axis line (optical axis CL) of the aperture section 89a, i.e., the direction intersecting the Z-axis direction, are determined by the positioning means 90 described above. With this configuration, the position of the diaphragm portion 89a is defined relative to the light-receiving substrate holding frame 103, and the position of the light-receiving substrate 80 equipped with the optical filter 3 is also defined. As a result, even if the optical filter 3 is not directly provided on the light-receiving substrate holding frame 103, it is possible to suppress positional deviation in the XY plane between the diaphragm portion 89a and the opening 32a (see FIG. 2) of the optical filter 3, and appropriate color measurement results can be obtained.

[0103] In this embodiment, the diaphragm portion 89a is formed in the diaphragm portion forming member 89, and the diaphragm portion forming member 89 is positioned relative to the light-receiving unit board holding frame 103. However, for example, an opening may be formed in the light-receiving unit board holding frame 103, and the opening may function as the diaphragm portion. In this case, it is particularly preferable to subject the light-receiving unit board holding frame 103 to black anodizing treatment to suppress light reflection, from the viewpoint of ensuring color measurement accuracy. Furthermore, in a configuration in which the aperture portion 89a is formed in the aperture portion forming member 89 and the aperture portion forming member 89 is positioned relative to the light receiving unit board holding frame 103 as in this embodiment, by forming the aperture portion forming member 89 from a black resin material and omitting the anodizing treatment of the light receiving unit board holding frame 103, it is possible to suppress an increase in the cost of the device while ensuring color measurement accuracy. Of course, other materials may be used as appropriate for the light receiving substrate holding frame 103 and the diaphragm forming member 89 described above.

[0104] The colorimetric device 1 has a longitudinal direction, i.e., the Y-axis direction, and a lateral direction, i.e., the X-axis direction, as viewed from the Z-axis direction, and the light-receiving substrate 80 has a shape extending in the Y-longitudinal direction. The optical filter 3 is disposed on the light-receiving substrate 80 at a position offset in the +Y direction, which is one side of the center position Yc of the light-receiving substrate 80 in the longitudinal direction (see FIG. 14). The positioning means 90 determines the relative positions of the light-receiving substrate 80 and the light-receiving substrate holding frame 103 at one point (the positioning hole 80a and the convex portion 103h) in the +Y direction from the center position Yc in the Y-axis direction. As a result, the positional relationship between the light-receiving substrate holding frame 103, which has a shape extending in the Y-longitudinal direction, and the light-receiving substrate 80 is determined at a position close to the optical filter 3, and positional deviation between the diaphragm portion 89a and the optical filter 3 can be appropriately suppressed.

[0105] In this embodiment, the positioning means 90 is configured to include protrusions (protrusions 103h, protrusions 103j) provided on one of the light-receiving substrate 80 and the light-receiving substrate holding frame 103, and fitting holes (positioning hole 80a, elongated hole 80d) into which the protrusions fit, provided on the other of the light-receiving substrate 80 and the light-receiving substrate holding frame 103. Specifically, in this embodiment, the positioning means 90 includes the positioning hole 80a and the protrusion 103h that fits therein, and the elongated hole 80d and the protrusion 103h that fits therein. This allows the positioning means 90 to be constructed at low cost. In this embodiment, a fitting hole is provided in the light receiving unit substrate 80 and a protrusion is provided in the light receiving unit substrate holding frame 103, but the opposite may be true, with a protrusion provided in the light receiving unit substrate 80 and a fitting hole provided in the light receiving unit substrate holding frame 103.

[0106] In this embodiment, the light collecting member 87, which is a cylindrical member that forms a path of light from the measurement target 200 toward the diaphragm unit 89a, is provided on the light receiving unit substrate holding frame 103. In other words, the light collecting member 87 is positioned on the light receiving unit substrate holding frame 103. This allows the relative positions of the light collecting member 87 and the diaphragm unit 89a in the XY plane to be appropriately determined.

[0107] In this embodiment, the light-receiving unit substrate holding frame 103 is made of aluminum and has a black anodized surface, which prevents a decrease in color measurement accuracy caused by light reflection on the light-receiving unit substrate holding frame 103.

[0108] Next, in Figure 3, the colorimetric device 1 comprises an internal unit 1a having an incident light processing section 2, and a main housing 51 that covers the internal unit 1a and forms the outer shell of the device, and a frame assembly 100 that forms the base of the internal unit 1a is formed from multiple frames made of aluminum, and the main housing 51 is made of aluminum and is anodized. In this way, the frame assembly 100 and the main housing 51 are made of aluminum, which provides good heat dissipation. Furthermore, the main housing 51 is anodized, which improves heat dissipation through radiation. With this configuration, heat generated inside the device can be efficiently dissipated to the outside of the device, thereby achieving appropriate color measurement results. In this embodiment, the anodized aluminum treatment of the main housing 51 is black anodized aluminum treatment, but the present invention is not limited to this. In this embodiment, the upper housing 52, the first bottom housing 53A, and the second bottom housing 53B are made of a resin material, but they may also be made of aluminum, and may be anodized black or in other colors.

[0109] Furthermore, the frame assembly 100 has contact portions 101d and 101e (see FIG. 7) that come into contact with the main housing 51 inside the main housing 51. This allows heat to be efficiently transferred from the frame assembly 100 to the main housing 51.

[0110] In this embodiment, the multiple frames that make up the frame assembly 100 are also black anodized like the main housing 51, which improves the heat dissipation properties of the frame assembly 100 by radiation and allows the heat generated inside the device to be efficiently released to the outside of the device. Note that in this case too, anodizing of other colors may be used instead of black anodizing. Alternatively, the anodizing treatment of the multiple frames that make up the frame assembly 100 can be omitted.

[0111] Main housing 51 has a longitudinal direction (Y-axis direction) and a lateral direction (X-axis direction) when viewed from above, and includes gripping recesses 51g on the side walls in the lateral direction (see FIG. 31). This improves the handleability of the device, increases the surface area of ​​the side walls of main housing 51, and improves heat dissipation.

[0112] 7, the frame assembly 100 is provided with a battery holding portion 100a that is shaped to surround the battery 17. This allows heat generated from the battery 17 to be effectively transferred to the battery holding portion 100a and efficiently dissipated to the outside of the device.

[0113] The frame assembly 100 also has a movable frame 105 as a substrate holding part that holds the light receiving part substrate 80 on which the incident light processing part 2 is provided, and the battery holding part 100a and the movable frame 105 are arranged with a gap in the Z-axis direction. In other words, the battery 17 and the light receiving unit substrate 80 are both heat sources, and if they are located close to each other, there is a risk that efficient heat dissipation will not be possible. However, as described above, the battery holding unit 100a and the movable frame 105 are arranged with a gap in the Z-axis direction, so that efficient heat dissipation is possible.

[0114] In this embodiment, frame fixing portion 105a of movable frame 105 constituting movable unit 1e is displaced in the Z-axis direction while contacting a contact portion (not shown) formed inside main housing 51. This allows heat from movable frame 105, i.e., movable unit 1e, to be transferred to main housing 51 and efficiently dissipated to the outside of the device via main housing 51.

[0115] Next, as explained with reference to Figure 31, on the inside of the battery holding portion 100a, there are formed a first corner C1 where the first wall portion W1 and the third wall portion W3 intersect, a second corner C2 where the first wall portion W1 and the fourth wall portion W4 intersect, a third corner C3 where the second wall portion W2 and the fourth wall portion W4 intersect, and a fourth corner C4 where the second wall portion W2 and the third wall portion W3 intersect. When cut in the XZ plane, the battery 17 has an upper portion formed in an arc shape, and a lower portion formed in a shape that narrows toward the first wall portion W1 so as to widen the gap between the battery 17 and the third wall portion W3 and the gap between the battery 17 and the fourth wall portion W4. As a result, a gap S1 is formed between the first corner portion C1 and the battery 17, a gap S2 is formed between the second corner portion C2 and the battery 17, a gap S3 is formed between the third corner portion C3 and the battery 17, and a gap S4 is formed between the fourth corner portion C4 and the battery 17.

[0116] In this embodiment, the screws Z1 that assemble the first battery holding frame 101 and the second battery holding frame 102 that make up the battery holding portion 100a are arranged using the gap S2. Additionally, screws Z9 that assemble the main housing 51 and the horizontal portion 101b of the first battery holding frame 101 are arranged using the gaps S3 and S4. As described above, the screws related to the battery holding portion 100a are arranged by utilizing the gap formed inside the battery holding portion 100a, thereby preventing the device from becoming larger due to the components related to the battery holding portion 100a.

[0117] In this embodiment, the components relating to the battery holding portion 100a are arranged using the gaps S2, S3, and S4, but it is sufficient that at least one of the gaps S1, S2, S3, and S4 is used.

[0118] As described above, the battery 17 has a shape in which the width of the lower portion narrows toward the first wall portion W1 so as to widen the gap between the battery 17 and the third wall portion W3 and the gap between the battery 17 and the fourth wall portion W4, thereby widening the gaps S1 and S2. The screw Z1 is disposed using the gap S2 formed in this manner, which further prevents the device from becoming larger due to the components related to the battery holding portion 100a.

[0119] Note that the components related to the battery holding portion 100a are not limited to screws, and may be other components, for example, a connector to which the battery 17 is connected. Fig. 33 shows a color measurement device 150 according to another embodiment, and the same components as those already described are assigned the same reference numerals. Inside the battery holding portion 151 of the color measurement device 150 shown in Fig. 33, a screw Z1 is arranged using the gap S3, and a screw Z9 is arranged using the gap S4. In this embodiment, the battery control board 70 is disposed close to the battery holding portion 151, so that the first connector 17c connected to the first battery connector 72 fits into the gap S1, i.e., is disposed using the gap S1. Similarly, the second connector 17d connected to the second battery connector 73 fits into the gap S2, i.e., is disposed using the gap S2. This configuration can prevent the device from becoming too large. In the configuration shown in FIG. 33, the first battery connector 72 and the second battery connector 73 do not enter the gaps S1 and S2, respectively, but they may be configured to enter the gaps S1 and S2.

[0120] Furthermore, the configuration that is arranged using at least one of the gaps S1, S2, S3, and S4 may be any one, any two, or all of the following: a connector to which the battery 17 is connected, screws that assemble the multiple frames that make up the battery holding portion 100a, and screws that assemble the main housing 51 and the battery holding portion 100a. Furthermore, the configuration placed in one gap may be any one, any two, or all of the following: a connector to which the battery 17 is connected, a screw that assembles the multiple frames that make up the battery holding portion 100a, and a screw that assembles the main housing 51 and the battery holding portion 100a.

[0121] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these modifications are also included in the scope of the present invention. For example, in the above-described embodiment, the colorimetric device 1 has a built-in battery 17, but the battery 17 may be configured to be removable, that is, the colorimetric device 1 may not have a built-in battery 17. In this case, the battery 17 may be a primary battery that is not repeatedly charged and discharged.

[0122] In this embodiment, the incident light processing unit 2 is configured to include an optical filter 3 and a light receiving unit 4. The optical filter 3 is a wavelength-tunable Fabry-Perot etalon that transmits a predetermined wavelength component of the incident light, but this is not limited to this. For example, a spectroscopic method using a diffraction grating may be used. Furthermore, the device may be configured to employ a direct stimulus value reading method that directly measures three stimulus values ​​that are the basis of color as a color measurement principle. In this embodiment, an LED is used as the light emitting element used in the light emitting unit 9, but this is not limiting, and for example, a xenon lamp may also be used. [Explanation of symbols]

[0123] 1...colorimetry device, 1a...device internal unit, 1b...fixed unit, 1c...first unit, 1d...second unit, 1e...movable unit, 2...incident light processing section, 3...optical filter, 4...light receiving section, 4a...photodiode, 5...PD board, 6...capacitance detection section, 7...bandpass filter, 8...plastic member, 9...light emitting section, 10...MCU, 11..., 12...wired IF, 13...wireless communication section, 14...operation section, 15...display section, 16...battery control section, 17...battery, 17a...first end, 17b...second end, 17c...first connector, 17d...second connector, 21...opening type forming member, 21a...opening, 27...cover member, 28...elastic material, 30...first glass member, 31...second glass member, 32...case, 32a...opening, 33...bonding member, 34...fixing member, 35...wire bonding, 36...electrode, 37...base substrate, 38...diaphragm substrate, 39...mirror, 40...fixed electrode, 41...movable electrode, 42...diaphragm portion, 43...bonding film, 45...tunable interference filter, 50...device body, 50a...front surface, 50b...right side surface, 50c...left side surface, 50d...rear surface, 50e...top surface, 50f...bottom surface, 50g...grip portion, 50m...opening, 51...main housing , 51a...front wall portion, 51b...right wall portion, 51c...left wall portion, 51d...rear wall portion, 51e...front inner wall surface, 51f...rear inner wall surface, 51g...recess, 51m, 51n...unit fixing portion, 51p...screw hole, 52...upper housing, 53A...first bottom housing, 53B...second bottom housing, 54...enter button, 54a...contact, 55...power button, 55a...contact, 56...back button, 56a...contact, 57...display cover, 60...cross pad, 61...up button, 61a...contact, 62...down button, 62a...contact, 63...left button, 63a...contact, 64...right button, 65...panel board, 66...LC D connection portion, 67...LCD, 67a...cable, 69...sheet material, 70...battery control board, 71...reset switch, 72...first battery connector, 73...second battery connector, 80...light receiving board, 80a...positioning hole, 80b, 80c...screw insertion hole, 80d...long hole, 85...light emitting board, 86...light emitting element, 87...light collecting member, 87a...measurement window portion, 87b...cylindrical portion, 87c...first base portion, 87d...first protrusion, 87e...second protrusion, 87f...screw insertion hole, 87g...second base portion, 88...intermediate member, 88a...opening, 88b...positioning hole, 88c...long hole,88d...screw insertion hole, 89...throttled portion forming member, 89a...throttled portion, 89b...positioning hole, 89c...long hole, 89d...screw insertion hole, 89e...protrusion, 90...positioning means, 92...first battery cable, 93...second battery cable, 95...elastic member, 100...frame assembly, 100a...battery holding portion, 100b...cutout portion, 101...first battery holding frame, 101a...first vertical portion, 101b... horizontal portion, 101c... second vertical portion, 101d, 101e... contact portion, 101f... battery regulating portion, 102... second battery holding frame, 102a... battery support portion, 102b... first vertical portion, 102c... second vertical portion, 102d... battery positioning portion, 103... light receiving unit board holding frame, 103a... base portion, 103b... opening, 103c... positioning hole, 103d... elongated hole, 103e ...screw holes, 103f, 103g...substrate support portion, 103h, 103j...protrusion, 103k, 103m...screw holes, 104...light-emitting unit substrate holding frame, 104a, 104b...frame support portion, 104c, 104d...connection portion, 104e...opening, 104f...base portion, 104g...screw insertion hole, 105...movable frame, 105a...frame fixing portion, 105b...guided portion, 105c...pipe insertion hole, 105d , 105e... guided hole, 105f... bending portion, 105g... substrate support portion, 106... bottom frame, 106a... base portion, 106b... guide support portion, 106c, 106d... bending portion, 106e, 106f... connecting portion, 107... guide shaft, 108... pipe, 110... shutter unit, 111... shutter holding member, 112... shutter member, 113... link member, 114... shutter sensor, 150...colorimetric device, 151...battery holding section, 200...measurement object, B1, B2...Connection site, C1...first corner, C2...second corner, C3...third corner, C4...fourth corner, W1...first wall part, W2...second wall part, W3...third wall part, W4...fourth wall part, Z1, Z2, Z3, Z4, Z5, Z6, Z9, Z10, Z11, Z12, Z13, Z14, Z15...Screws

Claims

1. a substrate provided with an optical filter for processing light arriving from the object to be measured; a diaphragm that reduces the amount of light traveling from the measurement object toward the optical filter; a frame disposed opposite the substrate and to which the substrate is fixed, the frame having a base portion and a substrate support portion formed at a position one step higher than the base portion in a thickness direction of the optical filter, thereby forming a shape that avoids the optical filter, and the diaphragm portion is positioned at a position opposite the optical filter; a positioning means for determining the relative positions of the substrate and the frame in a direction intersecting with the central axis of the narrowed portion, The narrowed portion fits into an opening formed in the frame. A color measuring device characterized by:

2. 2. The color measurement device according to claim 1, wherein a housing forming an outer shell of the device has a longitudinal direction and a lateral direction when viewed from the central axis direction, the substrate has a shape extending in the longitudinal direction, the optical filter is disposed on the substrate at a position offset to one side from a center position of the substrate in the longitudinal direction, the positioning means determines the relative position at at least one location on the one side of the center position in the longitudinal direction; A color measuring device characterized by:

3. 3. The color measuring device according to claim 1, wherein the positioning means is configured to include a protrusion provided on one of the substrate and the frame, and a fitting hole provided on the other of the substrate and the frame, into which the protrusion fits. A color measuring device characterized by:

4. 4. The color measuring device according to claim 1, further comprising a cylindrical member that forms a path of light from the measurement object toward the diaphragm portion, The tubular member is positioned in the frame. A color measuring device characterized by:

5. 5. The color measuring device according to claim 1, wherein the frame is made of aluminum and has a surface that is black anodized. A color measuring device characterized by:

6. 6. The color measurement device according to claim 1, further comprising: an apparatus internal unit including: an opening forming member disposed at a bottom of the device, the opening forming member having an opening for introducing light arriving from the measurement object into the inside of the device; the substrate; and the frame; The device internal unit includes: a fixing unit connected to the opening forming member; a movable unit including the substrate and the frame, the movable unit being displaceable relative to the fixed unit in a first direction along the central axis; and at least one elastic member that elastically maintains the position of the movable unit relative to the fixed unit in the first direction. A color measuring device characterized by:

7. 7. The color measurement device according to claim 6, wherein the fixed unit comprises: a first unit connected to the opening forming member; a second unit located farther from the opening forming member than the first unit in the first direction and connected to the first unit with a gap between the first unit and the second unit in the first direction; a guide shaft extending along the first direction in the gap between the first unit and the second unit, the movable unit is interposed between the first unit and the second unit and includes a guided portion that is guided by the guide shaft; A color measuring device characterized by:

8. 8. The color measuring device according to claim 7, wherein the elastic member is provided between the first unit and the guided portion and between the second unit and the guided portion with a free length in the first direction shortened. A color measuring device characterized by:

9. 9. The colorimetric device according to claim 1, wherein the optical filter is a wavelength-tunable Fabry-Perot etalon that transmits a predetermined wavelength component of incident light. A color measuring device characterized by:

Images