JP2011164022A - Spectrometer and spectrometry - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spectrometer and spectrometry which can improve measurement accuracy. <P>SOLUTION: Since light emitted from a light source 2 and reflected by an irradiation surface IF is condensed by a plurality of two-dimensionally arranged lenses 6A, and light transmitted through the lenses 6A is dispersed by a prism 10A and received by an imager 11 for each prescribed band to disperse and receive light reflected by a plurality of regions, the amount of a component to be measured in the plurality of regions can be measured and measurement accuracy is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a spectroscopic measurement device and a spectroscopic measurement method, and is suitable for measuring, for example, the amount of skin components.

  Conventionally, a spectroscopic measurement device configured to measure the amount of a component to be measured in the skin by irradiating the skin (skin) with light of a predetermined band, and spectrally analyzing the light reflected by the skin and performing multiple regression analysis Has been proposed (see, for example, Patent Document 1).

  There has also been proposed a spectroscopic measurement apparatus in which light emitted from a light source is diffused and reflected on the inner surface of an integrating sphere to irradiate the skin as uniform light (see, for example, Patent Document 2).

JP-A-11-299743 JP 2000-350702 A

  By the way, in the above-described spectroscopic measurement apparatus, since the region to which light is irradiated is limited, only the component amount to be measured on the skin in that region can be measured, and the component amount that varies depending on the position is measured. However, since only the component amount in the local region can be measured, there is a problem that the variation cannot be taken into account and the measurement cannot be performed with high accuracy.

  The present invention has been made in consideration of the above points, and intends to propose a spectroscopic measurement apparatus and a spectroscopic measurement method capable of improving measurement accuracy.

  In order to solve such a problem, in the present invention, a spectroscopic measurement apparatus, a plurality of two-dimensionally arranged lenses that collect light reflected in an irradiation target by light in a predetermined wavelength range irradiated by an irradiation unit, A spectroscopic unit that splits light transmitted through a plurality of lenses for each predetermined wavelength range, a light receiving unit that separately receives light for each predetermined wavelength range that has passed through the spectroscopic unit, and a light reception result obtained by the light receiving unit. And calculating means for calculating the component amount of the measurement target in the irradiation target.

  Also, in the present invention, there is provided a spectroscopic measurement method in which light in a predetermined wavelength range irradiated by the irradiation unit is collected by a plurality of lenses arranged two-dimensionally and reflected by the irradiation target. A light receiving step for separately receiving the light separated by the spectroscopic means for each predetermined wavelength range, and a calculating step for calculating the component amount of the measurement target in the irradiation target using the light reception result obtained by the light receiving step. Have.

  As a result, the light incident on each of the plurality of lenses is spectrally acquired, and the component amount of the measurement target in the irradiation target is calculated separately for each region using the acquisition result. Therefore, the component amount of the measurement target in the plurality of regions is calculated. Can be calculated.

  As described above, according to the present invention, the light incident on each of the plurality of lenses is acquired by spectroscopy, and the component amount of the measurement target in the irradiation target is calculated separately for each region using the acquisition result. The amount of the component to be measured in the region can be calculated, and thus the spectroscopic measurement apparatus and spectroscopic measurement method that can improve the measurement accuracy can be realized.

It is the schematic which shows the structure of a spectrometer. It is the schematic which shows the reflection in skin. It is the schematic which shows the structure of a micro lens array and a spatial modulator. It is the schematic which shows the structure of a microprism array and an imager. It is the schematic which shows the structure of a control analysis part. It is the schematic which shows the functional structure of CPU. It is the schematic which shows the setting of the spatial modulator according to a mode. It is the schematic which shows control of the spatial modulator in component amount detection mode. It is the schematic which shows control of the spatial modulator in color component detection mode. It is a flowchart which shows a control analysis processing procedure.

Hereinafter, modes for carrying out the invention will be described. The description will be in the following order.
<1. Embodiment>
<2. Other embodiments>

<1. Embodiment>
[1-1. Configuration of Spectrometer]
FIG. 1 shows a spectroscopic measurement apparatus 1 according to the present embodiment. The spectroscopic measurement device 1 includes a light source 2, a mirror 3, a half mirror 4, a polarizer 5, a micro lens array 6, a half mirror 7, a spatial modulator 8, a polarizer 9, a micro prism array 10, an imager 11, a detector array 12, and a control. It is comprised by the analysis part 13.

  As the light source 2, organic EL (Electro Luminescence) illumination, LED (Light Emitting Diode) illumination, laser, xenon lamp, mercury lamp, white fluorescent lamp, and the like are applied, and emits white light with a uniform spectrum. In particular, by applying organic EL illumination having a predetermined area close to the spectrum of sunlight as the light source 2, it is possible to uniformly illuminate a wide range by surface irradiation from the organic EL illumination.

  The light emitted from the light source 2 is reflected by the mirror 3 and guided to the half mirror 4. The half mirror 4 is configured to transmit and reflect light at a predetermined ratio, and light transmitted through the half mirror 4 out of the light that has been reflected and reached by the mirror 3 is irradiated onto the irradiation surface IF.

  When human skin 20 is arranged on irradiation surface IF, as shown in FIG. 2, light L1 irradiated to skin 20 reflects light on the surface of epidermis 21 (hereinafter also referred to as surface reflected light). It is divided into L2 and light incident on the inside of the skin 20.

  Light incident on the inside of the skin 20 is diffused between the epidermis 21 and the dermis 22 and emitted from the skin surface (hereinafter also referred to as internal scattered light) L3, and between the epidermis 21 and the dermis 22. And the light L4 that is regularly reflected at the interface between the epidermis 21 and the dermis 22 and is emitted from the skin surface (hereinafter also referred to as internally reflected light) L4.

  When the light L1 applied to the skin 20 is parallel light, the surface reflected light L2 and the internal reflected light L4 are guided to the half mirror 4 as parallel light. On the other hand, since the light L1 is diffusely reflected between the epidermis 21 and the dermis 22, the internally scattered light L3 is guided to the half mirror 4 as diffused light in which the irregularly reflected position is regarded as a point light source.

  Of the light reaching from the irradiation surface IF, the light reflected by the half mirror 4 enters the polarizer 5. The polarizer 5 passes only the linearly polarized light component of the incident light and guides the passed light to the microlens array 6.

  As shown in FIG. 3A, the microlens array 6 has a structure in which a large number of lenses 6A are two-dimensionally (lattice-shaped) and collects parallel light incident on each lens 6A. At the same time, the incident diffused light is converted into parallel light and guided to the half mirror 7. In FIG. 3, the half mirror 7 is omitted for convenience of explanation.

  The half mirror 7 (FIG. 1) has a characteristic that, for example, 90% of incident light is transmitted and 10% is reflected, and the transmitted light is guided to the spatial modulator 8 and the reflected light is detected by the detector array. Lead to twelve.

  As the spatial modulator 8, as shown in FIG. 3B, a two-dimensional liquid crystal element in which a plurality of pixels are arranged in the vertical direction is applied to each lens 6A of the microlens array 6. In the present embodiment, a case will be described in which seven pixels 8A to 8G are arranged in the vertical direction with respect to each lens 6A. However, this is merely an example, and other pixel numbers may be set. Is.

  When the parallel light PL is incident on the lens 6A, the spatial modulator 8 is a central pixel 8D among the seven pixels 8A to 8G in which the light collected by the lens 6A is condensed in the vertical direction. It arrange | positions in the position which only injects into. That is, the microlens array 6 and the spatial modulator 8 are arranged apart from each other by the focal length of the lens 6A.

  In addition, when the diffused light DL is incident on the lens 6A, the spatial modulator 8 is incident on all of the seven pixels 8A to 8G in which the parallel light collected by the diffused light DL is vertically aligned. Thus, the diameter of the lens 6A and the vertical length of the seven pixels 8A to 8G are substantially the same.

  As will be described later, the spatial modulator 8 switches the voltage to the pixels 8A to 8G based on the control of the control analysis unit 13, thereby changing the alignment state of the liquid crystals, and the light passing through the pixels 8A to 8G. Change the polarization direction.

  The light that has passed through the spatial modulator 8 enters the polarizer 9. The polarizer 9 transmits light of a predetermined polarization direction and guides it to the microprism array 10 and blocks light of other polarization directions.

  As shown in FIG. 4A, in the microprism array 10, the same number of prisms 10A as the number of pixels of the spatial modulator 8 are arranged two-dimensionally (lattice). Since the angle (refractive index) at which light at the interface bends increases as the wavelength of incident light is shorter, the prism 10A splits the light into a plurality of wavelength components based on the difference in refractive index and guides it to the imager 11.

  As shown in FIG. 4B, the imager 11 is adapted to a two-dimensional array of imaging elements in which, for example, seven pixels are arranged in the left-right direction with respect to each prism 10A of the microprism array 10. That is, the light separated by the prism 10A of the microprism array 10 is applied to seven different pixels for each predetermined wavelength band.

  Therefore, in the spectroscopic measurement device 1, the light transmitted through each lens 6 </ b> A of the microlens array 6 is divided into seven lights in the vertical direction by the spatial modulator 8, and the light divided into seven in the horizontal direction by the microprism array 10. The light is divided into seven lights for each wavelength band. As a result, light transmitted through each lens 6A in the microlens array 6 is received over 7 × 7 = 49 pixels in the imager 11.

  In this way, the spectroscopic measurement device 1 is configured to receive the light incident on each lens 6A of the microlens array 6 by different pixels of the imager 11, and therefore the same number as the number of lenses 6A on the irradiation surface IF. Can be acquired at once.

  When the imager 11 receives the light separated by the microprism array 10, the imager 11 sends the light reception result to the control analysis unit 13.

  On the other hand, the light reflected by the half mirror 7 is applied to the detector array 12. For example, an image sensor having the same number of pixels as the spatial modulator 8 is applied to the detector array 12.

  The detector array 12 is arranged at a position where the distance from the microlens array 6 is the same as the distance from the microlens array 6 to the spatial modulator 8. In the detector array 12, each pixel is arranged at a position corresponding to each pixel of the spatial modulator 8.

  When the detector array 12 receives light at each pixel, the detector array 12 sends the light reception result to the control analysis unit 13.

  Based on the light reception result supplied from the imager 11, the control analysis unit 13 calculates the component amount of the measurement target in the irradiation target arranged on the irradiation surface IF. The control analyzer 13 controls the voltage applied to each pixel of the spatial modulator 8 based on the light reception result supplied from the detector array 12.

[1-2. Configuration of control analysis unit]
As shown in FIG. 5, the control analysis unit 13 is configured by connecting various hardware to a CPU (Central Processing Unit) 31 that controls the control.

  Specifically, a ROM (Read Only Memory) 32, a RAM (Random Access Memory) 33 serving as a work memory of the CPU 31, an operation input unit 34 for inputting a command according to a user operation, an interface unit 35, a display unit 36, and a storage The unit 37 is connected via the bus 38.

  The ROM 32 stores a program (hereinafter also referred to as a control analysis program) for analyzing only the light to be measured among the light coming from the irradiation surface IF by the imager 11 and analyzing the component amount to be measured. The

  The interface unit 35 is connected to the spatial modulator 8, the imager 11, and the detector array 12 through a dedicated transmission path, and can be connected to other devices through a wired or wireless transmission path.

  A liquid crystal display, an EL display, or the like is applied to the display unit 36. For the storage unit 37, a magnetic disk represented by HD (Hard Disc), a semiconductor memory, an optical disk, or the like is applied. A removable memory (portable memory) such as a USB (Universal Serial Bus) memory or a CF (Compact Flash) memory may be applied.

  The CPU 31 expands, in the RAM 33, a program corresponding to a command given from the operation input unit 34 among the plurality of programs stored in the ROM 32. The interface unit 35, the display unit 36, or the storage unit 37 is loaded according to the expanded program. Control appropriately.

[1-3. Control analysis processing]
When the CPU 31 expands the control analysis program corresponding to the command for calculating the component amount to be measured from the operation input unit 34 in the RAM 33, as shown in FIG. 6, the drive control unit 41, the space control unit 42, and the calculation unit 43 and the display control unit 44.

  The drive control unit 41 determines a preset mode or a mode designated from the operation input unit 34. In this embodiment, a component amount detection mode for detecting the amount (concentration) of components (melanin and hemoglobin) in the skin 20 or a color component detection mode for detecting the color component amount of the skin 20 is set as the mode. .

(1) Component Amount Detection Mode By the way, the internally scattered light L3 (FIG. 2) is light that is diffusely reflected inside the epidermis 21 and emitted from the skin surface, and therefore, the amount of components (concentration) such as melanin and hemoglobin contained in the epidermis 21 ) Is reflected. That is, the amount (concentration) of components such as melanin and hemoglobin can be calculated by receiving the internal scattered light L3.

  Therefore, when the component amount detection mode is selected, the drive control unit 41 sets the spatial modulator 8 to irradiate only the internal scattered light L3 to the imager 11. Specifically, as shown in FIG. 7A, the drive control unit 41 is configured so that only the light transmitted through the pixel 8D disposed at the center of the light emitted from the lens 6A to the pixels 8A to 8G is polarized. The orientation directions of the pixels 8A to 8G are switched so that the light transmitted through the other pixels 8A to 8C and 8E to 8G is transmitted through the polarizer 9.

  The drive control unit 41 sets an irradiation condition such as an irradiation light amount for the light source 2 and drives the light source 2 to irradiate light with the irradiation condition. The drive control unit 41 sets light receiving conditions such as an exposure time for the imager 11 and the detector array 12, and receives light reflected from the skin 20 disposed on the irradiation surface IF under the light receiving conditions.

  When the spatial control unit 42 obtains a light reception result obtained by receiving light with the detector array 12, the spatial control unit 42 detects the intensity of light irradiated on the pixels 8A to 8G of the spatial modulator 8 from the light reception result.

  Then, the spatial control unit 42 adjusts the spatial modulator 8 so that the surface reflected light L2 and the internally reflected light L4 are blocked by the polarizer 9 and only the internally scattered light L3 is transmitted by the polarizer 9.

  Here, when the surface reflected light L2 and the internal reflected light L4 are parallel to the optical axis of the lens 6A and enter the lens 6A as parallel light, the surface reflected light L2 and the internal reflected light L4 collected by the lens 6A are collected. The light is condensed on the pixel corresponding to the pixel 8D in the detector array 12.

  Further, the internally scattered light L3 that can be regarded as light emitted from the point light source is collected by the lens 6A and is irradiated substantially uniformly onto the pixels corresponding to the pixels 8A to 8G in the detector array 12, respectively.

  Therefore, when the surface reflected light L2 and the internally reflected light L4 are incident on the lens 6A in parallel and parallel to the optical axis of the lens 6A, the detector array 12 has a luminance value of the pixel corresponding to the pixel 8D compared to the other pixels. It becomes a high value.

  However, as shown in FIG. 8A, when the surface reflected light L2 and the internally reflected light L4 are incident on the lens 6A at a predetermined angle with respect to the optical axis of the lens 6A, they are collected by the lens 6A. The surface reflection light L2 and the internal reflection light L4 are condensed on the pixel 8E in the spatial modulator 8, for example.

  In this case, in the light reception result at the detector array 12, the luminance value of the pixel corresponding to the pixel 8E is higher than that of the other pixels. At this time, the spatial control unit 42 determines from the light reception result obtained by the detector array 12 that the surface reflected light L2 and the internal reflected light L4 are condensed on the pixel 8E in the spatial modulator 8.

  And the space control part 42 is the light which permeate | transmitted the pixel 8E among the lights irradiated to the pixel 8A-8G from the lens 6A, and was blocked | interrupted by the polarizer 9, and the light which permeate | transmitted other pixels 8A-8D and 8F-8G Switches the orientation directions of the pixels 8A to 8G so that the light passes through the polarizer 9.

  As shown in FIG. 8B, when the surface reflected light L2 and the internally reflected light L4 are parallel to the optical axis of the lens 6A and enter the lens 6A as convergent light, the surface condensed by the lens 6A. The reflected light L2 and the internally reflected light L4 are applied to the pixels 8C to 8E in the spatial modulator 8, for example.

  In this case, in the light reception result by the detector array 12, the luminance values of the pixels corresponding to the pixels 8C to 8E are higher than those of the other pixels. At this time, the spatial control unit 42 determines from the light reception result obtained by the detector array 12 that the pixels 8C to 8E in the spatial modulator 8 are irradiated with the surface reflected light L2 and the internal reflected light L4.

  In the space control unit 42, light transmitted through the pixels 8 </ b> C to 8 </ b> E from the light irradiated to the pixels 8 </ b> A to 8 </ b> G from the lens 6 </ b> A is blocked by the polarizer 9 and transmitted through the other pixels 8 </ b> A to 8 </ b> B and 8 </ b> F to 8 </ b> G. The orientation directions of the pixels 8A to 8G are switched so that the transmitted light passes through the polarizer 9.

  Further, as shown in FIG. 8C, when the surface reflection light L2 and the internal reflection light L4 are parallel to the optical axis of the lens 6A and enter the lens 6A as diverging light, the surface condensed by the lens 6A The reflected light L2 and the internally reflected light L4 are applied to the pixels 8C to 8E in the spatial modulator 8, for example.

  In this case, in the light reception result by the detector array 12, the luminance values of the pixels corresponding to the pixels 8C to 8E are higher than those of the other pixels. At this time, the spatial control unit 42 determines from the light reception result obtained by the detector array 12 that the pixels 8C to 8E in the spatial modulator 8 are irradiated with the surface reflected light L2 and the internal reflected light L4.

  In the space control unit 42, light transmitted through the pixels 8 </ b> C to 8 </ b> E from the light irradiated to the pixels 8 </ b> A to 8 </ b> G from the lens 6 </ b> A is blocked by the polarizer 9 and transmitted through the other pixels 8 </ b> A to 8 </ b> B and 8 </ b> F to 8 </ b> G. The polarization directions of the pixels 8A to 8G are switched so that the transmitted light passes through the polarizer 9.

  In this way, the space control unit 42 blocks the surface reflected light L2 and the internally reflected light L4 with the polarizer 9, and transmits only the internally scattered light L3 through the polarizer 9 to be received by the imager 11.

  Here, since the skin 20 is not flat, the surface reflected light L2 and the internal reflected light L4 reflected by the skin 20 exhibit different characteristics such as an angle shift, divergent light, and convergent light for each place.

  Correspondingly, the spatial control unit 42 reflects the light reflected by the plurality of regions on the skin 20 and transmitted through each lens 6A, and the spatial modulator 8 according to the angular deviation, divergent light, convergent light, and the like. Perform pixel control.

  As a result, the space control unit 42 performs pixel control for each position according to angular deviation, diverging light, convergent light, etc., even when light having different characteristics for each place is incident. It can be optimized for each position.

  When the calculation unit 43 acquires a light reception result obtained by receiving light with the imager 11, the calculation unit 43 calculates a component amount of the skin 20 based on the light reception result.

  Specifically, the calculation unit 43 uses the light reception result acquired from the imager 11 to calculate the component amount (concentration) of, for example, melanin and hemoglobin for each region corresponding to each lens 6A based on the Lambert-Beer law. The formula is calculated by multiple regression analysis. For hemoglobin, oxygenated hemoglobin and reduced hemoglobin may be calculated separately.

  The calculation unit 43 stores the calculated melanin and hemoglobin component amounts in the storage unit 37 in association with the calculated region and the calculated date and time.

  When the component amount is calculated by the calculation unit 43 or when there is a command to present the component amount from the operation input unit 34, the display control unit 44 associates the component amount stored in the storage unit 37 with the region. The attached display screen is displayed on the display unit 36.

(2) Color Component Detection Mode By the way, the surface reflected light L2 and the internally reflected light L4 are light regularly reflected by the skin 20, and therefore have information on the color of the skin 20. That is, by receiving the surface reflection light L2 and the internal reflection light L4 with the imager 11, it is possible to calculate the skin color component amount corresponding to the component of the skin 20 and the color component amount corresponding to the cosmetic component applied to the skin 20.

  Accordingly, when the color component detection mode is selected, the drive control unit 41 sets the spatial modulator 8 so that the imager 11 is not irradiated with the internal scattered light L3. Specifically, as shown in FIG. 7B, the drive control unit 41 transmits only the light transmitted through the pixel 8D out of the light irradiated from the lens 6A to the pixels 8A to 8G by the polarizer 9, The orientation directions of the pixels 8A to 8G are set so that light transmitted through the other pixels 8A to 8C and 8E to 8G is blocked by the polarizer 9.

  In practice, the light transmitted through the pixel 8D includes a part of the internal scattered light L3, but is smaller than the surface reflected light L2 and the internal reflected light L4 and can be ignored.

  The drive control unit 41 sets an irradiation condition such as an irradiation light amount for the light source 2 and drives the light source 2 to irradiate light with the irradiation condition. The drive control unit 42 sets light receiving conditions such as exposure time for the imager 11 and the detector array 12, and receives light reflected from the skin 20 disposed on the irradiation surface IF under the light receiving conditions.

  When the space control unit 42 obtains the light reception result obtained by receiving the light with the detector array 12, based on the light reception result, the space control unit 42 blocks the internal scattered light L3 with the polarizer 9, and the surface reflected light L2 and the internal reflected light L4 are separated. The spatial modulator 8 is adjusted so as to transmit from the polarizer 9.

  For example, as shown in FIG. 9A, when the surface reflected light L2 and the internally reflected light L4 enter the lens 6A at a predetermined angle with respect to the optical axis of the lens 6A, the space control unit 42 From the light reception result obtained by the array 12, it is determined that the surface reflection light L2 and the internal reflection light L4 are condensed on the pixel 8E in the spatial modulator 8.

  In the space control unit 42, the light transmitted through the pixels 8A to 8D and 8F to 8G among the light irradiated from the lens 6A to the pixels 8A to 8G is blocked by the polarizer 9, and the light transmitted through the pixel 8E is blocked. The orientation directions of the pixels 8 </ b> A to 8 </ b> G are switched so as to pass through.

  As shown in FIG. 9B, when the surface reflected light L2 and the internally reflected light L4 are parallel to the optical axis of the lens 6A and are incident on the lens 6A as convergent light, the space control unit 42 detects the detector array 12. From the light reception result obtained in step S5, it is determined that, for example, the pixels 8C to 8E in the spatial modulator 8 are irradiated with the surface reflected light L2 and the internal reflected light L4.

  In the space control unit 42, the light transmitted through the pixels 8A to 8B and 8F to 8G among the light irradiated to the pixels 8A to 8G from the lens 6A is blocked by the polarizer 9, and the light transmitted through the pixels 8C to 8E is blocked. The orientation directions of the pixels 8A to 8G are switched so as to pass through the polarizer 9.

  Further, as shown in FIG. 9C, when the surface reflected light L2 and the internally reflected light L4 are incident on the lens 6A as divergent light parallel to the optical axis of the lens 6A, the space control unit 42 is connected to the detector array 12. From the light reception result obtained in step S5, it is determined that, for example, the surface reflected light L2 and the internal reflected light L4 are applied to the pixels 8C to 8E in the spatial modulator 8.

  In the space control unit 42, the light transmitted through the pixels 8A to 8B and 8F to 8G among the light irradiated to the pixels 8A to 8G from the lens 6A is blocked by the polarizer 9, and the light transmitted through the pixels 8C to 8E is blocked. The orientation directions of the pixels 8A to 8G are switched so as to pass through the polarizer 9.

  In this way, the space control unit 42 blocks the internally scattered light L3 with the polarizer 9, transmits the surface reflected light L2 and the internally reflected light L4 with the polarizer 9, and causes the imager 11 to receive them.

  The calculation unit 43 calculates the color component amount based on the wavelength for each region corresponding to each lens 6A in the microlens array 6 using the light reception result acquired from the imager 11, and the region where the color component amount is calculated And it memorize | stores in the memory | storage part 37 in association with the date and time of the calculated time.

  The display control unit 44 is selected based on the color component amount stored in the storage unit 37 when the color component amount is calculated by the calculation unit 43 or when there is an instruction to present the color component amount from the operation input unit 34. A display screen showing the color component amount is displayed on the display unit 36.

[1-4. Control analysis processing procedure]
Next, the procedure of the control analysis process described above will be described using the flowchart shown in FIG. The CPU 31 enters from the start step of the routine RT1, proceeds to the next step SP1, sets the component amount detection mode or the color component detection mode, and proceeds to the next step SP2.

  In step SP2, the CPU 31 aligns the orientation directions of the pixels 8A to 8G of the spatial modulator 8 so as to block the light transmitted by the imager 11 other than the light received by the imager 11 according to the set mode. Is set and the process proceeds to the next step SP3.

  In step SP3, the CPU 31 emits light from the light source 2, and in the next step SP4, the light reflected by the skin 20 arranged as the irradiation surface IF is received by the detector array 12, and the process proceeds to the next step SP5.

  In step SP5, the CPU 31 determines whether or not only the light to be received by the imager 11 is transmitted through the polarizer 9, based on the light reception result obtained by receiving the light with the detector array 12, and if a negative result is obtained. Control goes to step SP6.

  In step SP6, the CPU 31 aligns the pixels 8A to 8G of the spatial modulator 8 so that only the light to be received by the imager 11 is transmitted through the polarizer 9, based on the light reception result obtained by receiving the light with the detector array 12. The direction is reset and the process returns to step SP4.

  On the other hand, if an affirmative result is obtained in step SP5, the CPU 31 proceeds to step SP7, and the imager 11 receives the light to be received out of the light reflected by the skin 20 arranged as the irradiation surface IF, and proceeds to the next step SP8. Move.

  In step SP8, the CPU 31 calculates the measurement target component amount set in each mode for each region corresponding to the lens 6A based on the light reception result obtained by receiving the light with the imager 11, and stores the calculation result. The data is stored in the unit 37 and the process proceeds to the next step SP9.

  In step SP9, the CPU 31 displays a display screen in which the component amounts stored in the storage unit 37 are associated with each region on the display unit 36, moves to the next step, and ends the process.

[1-5. Example]
(Example 1) Skin condition measurement The spectroscopic measurement device 1 sets a component amount detection mode according to, for example, an operation of the operation input unit 34, and a user's face in which light emitted from the light source 2 is arranged on the irradiation surface IF The entire surface is irradiated, and the light reflected by each region of the entire face is collected by each lens 6A of the microlens array 6.

  The spectroscopic measurement device 1 transmits only the internally scattered light L3 scattered in the epidermis 21 of the skin 20 through the polarizer 9 and receives it with the imager 11, calculates the melanin and hemoglobin component amounts from the light reception result, and melanin over the entire face. The amount of the hemoglobin component is displayed on the display unit 36.

  Thus, the user can check the distribution of the melanin and hemoglobin component amounts over the entire face, and can easily check the skin condition such as sunburn, blotches and freckles. Furthermore, the spectroscopic measurement apparatus 1 can also confirm the change state of the melanin and hemoglobin component amounts by displaying the past melanin and hemoglobin component amounts stored in the storage unit 37.

  In addition, the spectroscopic measurement device 1 is capable of sunscreen based on a service that provides the user with an estimate of the optimal cosmetics, for example, according to the distribution of the amount of melanin and hemoglobin throughout the face, and UV information acquired via the Internet. A service to make a selection can also be provided.

(Example 2) Measurement of foundation coating condition The spectroscopic measurement apparatus 1 sets, for example, a color component detection mode in accordance with an operation of the operation input unit 34, and a user who has arranged the light emitted from the light source 2 on the irradiation surface IF. The entire face is irradiated and the light reflected by each region of the entire face is collected by each lens 6A of the microlens array 6.

  The spectroscopic measurement apparatus 1 transmits the surface reflection light L2 and the internal reflection light L4 specularly reflected by the skin 20 through the polarizer 9 and receives them by the imager 11, for example, calculates the skin color component amount, and distributes the skin color component amount over the entire face. Is displayed on the display unit 36.

  As a result, the user can easily check the foundation coating condition, left / right imbalance, and the like. Furthermore, the spectroscopic measurement apparatus 1 can be set to the component amount detection mode, calculate the component amounts of melanin and hemoglobin, and display them together with the distribution of the skin color component amount, thereby making it possible to confirm the positions of spots, freckles, and the like. You can also check the degree of hiding such as stains and freckles.

  The spectroscopic measurement apparatus 1 can also provide services such as assistance for personal makeup techniques and assistance for makeup techniques considering wrinkles, stains, freckles, and the like based on how the foundation is applied to the entire face.

(Example 3) Total measurement of cosmetics The spectroscopic measurement apparatus 1 sets a color component detection mode in accordance with, for example, an operation of the operation input unit 34, and a user's face arranged on the irradiation surface IF with light emitted from the light source 2 The entire surface is irradiated, and the light reflected by each region of the entire face is collected by each lens 6A of the microlens array 6.

  The spectroscopic measurement device 1 transmits the surface reflected light L2 and internal reflected light L4 specularly reflected by the skin 20 through the polarizer 9 and received by the imager 11 to calculate the color component amount of a wide spectrum, for example, lipstick, The distribution of eye shadow, teak, etc. is displayed on the display unit 36. As a result, the user can easily check the total makeup of the makeup.

  The spectroscopic measurement device 1 can also provide services such as assistance for personal makeup techniques and color use by professional makeup artists from the application of makeup over the entire face.

[1-6. Operation and effect]
In the above configuration, the spectroscopic measurement device 1 condenses the light irradiated from the light source 2 and reflected by the irradiation surface IF by the plurality of lenses 6 </ b> A arranged two-dimensionally in the microlens array 6. The spectroscopic measurement apparatus 1 then splits the light transmitted through the plurality of lenses 6A by the prisms 10A of the microprism array 10 and receives them by the imager 11 for each predetermined band.

  As a result, the spectroscopic measurement device 1 can simultaneously measure the light reflected by the plurality of regions on the irradiation surface IF at one time, so that it is wider than the case where the measurement is performed at one place, and the target of the plurality of regions can be measured. The amount of components can be measured, and the measurement accuracy can be improved. In addition, since a plurality of regions are measured simultaneously at one time, the size can be reduced.

  In addition, the spectroscopic measurement apparatus 1 is provided with a space adjuster 8 that switches a range of light transmitted through the lens 6 </ b> A that passes through the polarizer 9. The spectroscopic measurement apparatus 1 switches the space adjuster 8 so that the imager 11 receives either the light regularly reflected by the irradiation surface IF or the scattered light.

  As a result, the spectroscopic measurement apparatus 1 can receive only one of the specularly reflected light and the scattered light reflecting the component amount to be measured by the imager 11, so that the measurement accuracy can be further improved. it can.

  Further, the spectroscopic measurement apparatus 1 is provided with a detector array 12 that detects light irradiated on the spatial modulator 8, and the range of light that is transmitted through the polarizer 9 based on the light reception result detected by the detector array 12 is determined by the spatial modulator. Changed according to 8.

  Thereby, the spectroscopic measurement apparatus 1 changes the range of light transmitted through the polarizer 9 by the spatial modulator 8 even when light is not incident on the lens 6A in the microlens array 6 parallel to the optical axis. Therefore, the light to be transmitted can be transmitted and the light to be blocked can be blocked.

  Further, in the spectroscopic measurement apparatus 1 that receives the spectrum in a plurality of regions, when the irradiation surface IF is uneven, the reflection direction of the light regularly reflected by the irradiation surface IF is not constant, but each lens 6A This is particularly useful because the transmitted light can be adjusted for each transmitted light.

  According to the above configuration, the light irradiated from the light source 2 and reflected by the irradiation surface IF is collected by the plurality of lenses 6A arranged two-dimensionally, and the light transmitted through the lenses 6A is separated by the prism 10A. The imager 11 receives light for each predetermined band.

  As a result, the spectroscopic measurement device 1 splits and receives the light reflected from the plurality of regions, so that it is possible to measure the component amount of the measurement target in a wide range and the plurality of regions, compared with the case where measurement is performed at one place. Thus, the measurement accuracy can be improved.

<2. Other embodiments>
In the embodiment described above, a part of the light transmitted through the microlens array 6 is reflected by the half mirror 7 and received by the detector array 12, thereby detecting the light applied to the spatial modulator 8 and detecting the imager. The case where the light received at 11 is controlled by the spatial modulator 8 has been described.

  The present invention is not limited to this. For example, the light received by the imager 11 may be controlled by the spatial modulator 8 without providing the half mirror 7 and the detector array 12. Specifically, the spatial modulator 8 is set so that all of the light transmitted through the lens 6 </ b> A is transmitted through the polarizer 9, and all the light is received by the imager 11.

  Then, according to the light reception result received by the imager 11, the spatial modulator 8 is switched so that the light to be transmitted by the polarizer 9 is transmitted and the light to be blocked by the polarizer 9 is blocked. As a result, only the light to be received by the imager 11 can be received without providing the half mirror 7 and the detector array 12.

  In the above-described embodiment, the case where an image sensor having the same number of pixels as the spatial modulator 8 is applied as the detector array 12 has been described. The present invention is not limited to this, and as the detector array 12, for example, the same number of photodetectors as the number of pixels of the spatial modulator 8 may be provided.

  In the embodiment described above, the polarization direction of light is changed to linear polarization by the polarizer 5, the polarization direction is changed by the spatial modulator 8, and the light received by the imager 11 is changed by being transmitted or blocked by the polarizer 9. If you said.

  The present invention is not limited to this, and any other configuration may be used as long as one of the light regularly reflected by the irradiation surface IF and the scattered light can be received by the imager 11.

  In the above-described embodiment, when the surface reflected light L2 and the internal reflected light L4 that are parallel to the optical axis of the lens 6A and are not parallel light are incident, the orientation direction of the pixels 8A to 8G in the spatial modulator 8 is switched to change the surface. The case where the reflected light L2 and the internally reflected light L4 are transmitted through the polarizer 9 has been described. The present invention is not limited to this, and when the surface reflected light L2 and the internally reflected light L4 that are parallel to the optical axis of the lens 6A and are not parallel light are incident, the surface reflected light L2 and the internally reflected light L4 are used as the optical axis of the lens 6A. The light may be incident on the lens 6A after being converted into parallel and parallel light.

  For example, a galvanometer mirror may be provided to change the light angle so that it is parallel to the optical axis of the lens 6A. Further, a variable focus collimator lens may be provided in front of the lens 6A to adjust the collimation of light incident on the lens 6A. Further, a MEMS (Micro Electro Systems) may be provided in front of the lens 6A to change the spatially local position.

  In the above-described embodiment, the case where the skin 20 is arranged on the irradiation surface IF and the components of the skin 20 are measured has been described. For example, the present invention may be applied to a fluorescence microscope that measures fluorescence emitted from a sample. Moreover, you may adapt as a sensor which measures freshness, such as vegetables, Furthermore, you may adapt to apparatuses, such as a measurement of the state of concrete, the measurement of the gas in air, and the measurement of soil.

  In the above-described embodiment, the case where the color component amount is calculated by receiving the surface reflected light L2 and the internally reflected light L4 regularly reflected by the skin 20 has been described. The present invention is not limited to this. For example, the light emitted from the light source 2 is applied to the skin 20 at a predetermined angle of incidence, and only one of the surface reflected light L2 and the internal reflected light L4 is received based on the optical path difference. The color component amount may be calculated.

  In the above-described embodiment, the case where the spatial modulator 8 is preset according to the selected mode and then reset according to the light reception result of the detector array 12 has been described. The present invention is not limited to this, and the spatial modulator 8 may be set according to the light reception result of the detector array 12 and the selected mode.

  In the above-described embodiment, the case where the polarizer 5, the spatial modulator 8, and the polarizer 9 are provided as the spatial modulation means has been described. The present invention is not limited to this, and it is sufficient that the imager 11 is irradiated with one of the parallel light and the scattered light coming from the irradiation surface IF.

  Further, in the above-described embodiment, the case where the CPU 31 performs the above-described control analysis processing according to the control analysis program stored in the ROM 32 has been described. The present invention is not limited to this, and the control analysis processing described above may be performed according to a control analysis program installed from a storage medium or downloaded from the Internet. Further, the control analysis process described above may be performed according to a control analysis program installed by various other routes.

  Further, in the above-described embodiment, the case where the lens 6A is provided as the lens, the microprism array 10 as the spectroscopic means, and the imager 11 as the light receiving unit is described. The present invention is not limited to this, and a lens, a spectroscopic unit, and a light receiving unit having various configurations may be provided.

  The present invention can be used in the bio-industry such as biological experiments, creation of medicines or patient follow-up.

  DESCRIPTION OF SYMBOLS 1 ... Spectrometer, 2 ... Light source, 3 ... Mirror, 4 ... 7 Half mirror, 5, 9 ... Polarizer, 6 ... Micro lens array, 8 ... Spatial modulator, 10 ... Micro Prism array, 11 ... imager, 12 ... detector array, 13 ... control analysis unit, 20 ... skin, 21 ... skin, 22 ... dermis, 31 ... CPU, 32 ... ROM, 33 ... RAM , 34 …… Operation input unit, 35 …… Interface unit, 36 …… Display unit, 37 …… Storage unit, 38 …… Bus, 41 …… Drive control unit, 42 …… Space control unit, 43 …… Calculation unit .

Claims (6)

A plurality of two-dimensionally arranged lenses for condensing the light reflected by the irradiation target by the light of a predetermined wavelength range irradiated by the irradiation means;
A spectroscopic means for spectroscopically splitting light transmitted through the plurality of lenses for each predetermined wavelength range;
A light receiving means for separately receiving light for each predetermined wavelength range that has passed through the spectroscopic means;
A spectroscopic measurement apparatus comprising: a calculation unit that calculates a component amount of a measurement target in the irradiation target using a light reception result obtained by the light reception unit. Spatial modulation means for changing the range through which the light transmitted through the plurality of lenses passes,
The spectroscopic means is
The spectroscopic measurement device according to claim 1, wherein the light transmitted through the spatial modulation unit is spectrally divided for each wavelength region. The spatial modulation means is
The spectroscopic measurement device according to claim 2, wherein one of the regularly reflected light and scattered light in the irradiation target is blocked and the other is transmitted. Detection means for detecting an irradiation position in the spatial modulation means of the specularly reflected light and the scattered light transmitted through the lens;
The spectroscopic measurement apparatus according to claim 3, further comprising: a control unit that changes the range of the spatial modulation unit according to the irradiation position. The spectroscopic measurement apparatus according to claim 4, wherein the irradiation target is a human body surface. The light reflected in the predetermined wavelength range irradiated by the irradiation unit is collected by a plurality of two-dimensionally arranged light beams reflected by the irradiation target, and the collected light is dispersed for each predetermined wavelength range by the spectroscopic unit. A light receiving step for receiving light separately;
A spectroscopic measurement method comprising: a calculation step of calculating a component amount of the measurement target in the irradiation target using the light reception result obtained in the light reception step.

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