WO2022004277A1 - 光演算システム - Google Patents
光演算システム Download PDFInfo
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- WO2022004277A1 WO2022004277A1 PCT/JP2021/021373 JP2021021373W WO2022004277A1 WO 2022004277 A1 WO2022004277 A1 WO 2022004277A1 JP 2021021373 W JP2021021373 W JP 2021021373W WO 2022004277 A1 WO2022004277 A1 WO 2022004277A1
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/06—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons
- G06N3/067—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using optical means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06E—OPTICAL COMPUTING DEVICES; COMPUTING DEVICES USING OTHER RADIATIONS WITH SIMILAR PROPERTIES
- G06E3/00—Devices not provided for in group G06E1/00, e.g. for processing analogue or hybrid data
- G06E3/001—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
- G06N3/045—Combinations of networks
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/08—Learning methods
Definitions
- the present invention relates to an optical diffraction element that performs optical arithmetic. Further, the present invention relates to an optical calculation system provided with such an optical diffraction element.
- Patent Document 1 discloses an optical neural network having an input layer, an intermediate layer, and an output layer. The above-mentioned optical diffraction element can be used, for example, as an intermediate layer of such an optical neural network.
- the defect extraction operation that extracts the defect of the subject from the image is an example of such an operation, and by synthesizing the image after the operation with the image before the operation, it is possible to find out what kind of defect is in the subject. An image that is easy for the inspector to see can be obtained.
- the signal light obtained in the conventional optical calculation system using the optical diffraction element includes only the signal light representing the information after the calculation, and does not include the signal light representing the information before the calculation. Therefore, the conventional optical diffraction element is not suitable for the calculation in which both the information before the calculation and the information after the calculation need to be referred to.
- One aspect of the present invention has been made in view of the above problems, and realizes an optical calculation system capable of obtaining signal light representing information before calculation in addition to signal light representing information after calculation.
- the purpose is to do.
- the optical calculation system includes a group of optical diffraction elements including n (n is a natural number of 2 or more) optical diffraction elements, and each optical diffraction element belonging to the optical diffraction element group has a thickness or a thickness. It is a plurality of cells in which the refractive electrodes are set independently of each other, and is composed of a plurality of cells classified into two types of cells C1 and C2. The thickness or refractive index of the light is set so that the optical calculation performed by the light diffusing element group becomes a uniform calculation when the cell C2 of each light diffusing element belonging to the light diffusing element group is masked. ..
- an optical calculation system capable of obtaining signal light representing information before calculation in addition to signal light representing information after calculation.
- FIG. 1 It is a top view which shows the structure of the optical diffraction element which concerns on one Embodiment of this invention. It is an enlarged perspective view of a part of the light diffraction element shown in FIG. 1. It is a perspective view which shows the main part structure of the optical calculation system provided with the optical diffraction element shown in FIG. 1. It is a perspective view which shows the 1st modification of the optical calculation system shown in FIG. It is a perspective view which shows the 2nd modification of the optical calculation system shown in FIG. It is a perspective view which shows the 3rd modification of the optical calculation system shown in FIG.
- FIG. 1 is a plan view of the optical diffraction element 1.
- FIG. 2 is an enlarged perspective view of a part of the optical diffraction element 1 (a portion surrounded by a broken line in FIG. 1).
- the optical diffraction element 1 is a flat plate-shaped optical diffraction element, and includes a plurality of microcells (an example of a "cell” in the claims) in which the amount of phase change is set independently of each other.
- the microcell refers to a cell having a cell size of less than 10 ⁇ m.
- the cell size refers to the square root of the area of the cell. For example, when the plan view shape of the microcell is square, the cell size is the length of one side of the cell.
- the lower limit of the cell size is not particularly limited, but is, for example, 1 nm.
- the optical diffraction element 1 illustrated in FIG. 1 is composed of 12 ⁇ 12 microcells arranged in a matrix.
- the plan view shape of each microcell is a 1 ⁇ m ⁇ 1 ⁇ m square, and the plan view shape of the light diffraction element 1 is a 12 ⁇ m ⁇ 12 ⁇ m square.
- the optical diffraction element 1 includes two types of microcells C1 and C2 that are subjected to different optical calculations.
- the microcells C1 (white cells in FIG. 1) and microcells C2 (shaded cells in FIG. 1) are arranged in a staggered pattern. That is, each microcell C1 is adjacent to the four microcells C2 via each of its four sides, and each microcell C2 is adjacent to the four microcells C1 via each of its four sides. Have been placed.
- the optical diffraction element 1 has (1) a first optical calculation realized by interfering with the light transmitted through the microcell C1 and (2) interfering with the light transmitted through the microcell C2.
- the second optical calculation to be realized is performed. The contents of the first optical calculation and the second optical calculation will be described later instead of the drawings to be referred to.
- each microcell C1 and C2 is composed of a square columnar pillar having a square bottom surface, as shown in FIG.
- FIG. 3 is a perspective view showing the configuration of the optical calculation system 10.
- the optical calculation system 10 includes an optical diffraction element group 11, a light emitting device 12, and a light receiving device 13.
- the optical diffraction element group 11 is composed of n optical diffraction elements 1 arranged in parallel with each other.
- n is a natural number of 2 or more, and is 3 in this embodiment.
- the first optical diffraction element 1 counting from the light emitting device 12 side is referred to as the first optical diffraction element 1a, and is counted from the light emitting device 12 side.
- the second optical diffraction element 1 is referred to as a second optical diffraction element 1b
- the third optical diffraction element 1 counting from the light emitting device 12 side is referred to as a third optical diffraction element 1c.
- the light emitting device 12 is a device for generating signal light to be input to the light diffraction element group 11.
- the light emitting device 12 has a plurality of cells arranged in a matrix, and is composed of, for example, a two-dimensional display.
- the cell of the light emitting device 12 and the microcell of the light diffraction element 1 have a one-to-one correspondence, for example.
- the signal light output from each cell of the light emitting device 12 is input to the microcell of the first light diffraction element 1a corresponding to the cell.
- the signal light transmitted through each microcell C1 of the first light diffraction element 1a mainly interferes with the signal light transmitted through the other microcells C1 of the first light diffraction element 1a, and is mainly used for the second light diffraction. It is input to each microcell C1 of the element 1b.
- the signal light transmitted through each microcell C2 of the first light diffraction element 1a mainly interferes with the signal light transmitted through the other microcells C2 of the first light diffraction element 1a, and is mainly the second. It is input to each microcell C2 of the optical diffraction element 1b.
- the signal light transmitted through each microcell C1 of the second light diffraction element 1b mainly interferes with the signal light transmitted through the other microcells C1 of the second light diffraction element 1b, and is mainly a third. It is input to each microcell C1 of the optical diffraction element 1c.
- the signal light transmitted through each microcell C2 of the second light diffraction element 1b mainly interferes with the signal light transmitted through the other microcells C2 of the second light diffraction element 1b, and is mainly a third. It is input to each microcell C2 of the optical diffraction element 1c.
- the light receiving device 13 is a device for detecting the signal light output from the light diffraction element group 11.
- the light receiving device 13 has a plurality of cells arranged in a matrix, and is composed of, for example, a two-dimensional image sensor. There is a one-to-one correspondence between the cell of the light receiving device 13 and the microcell of the light diffraction element 1.
- the signal light transmitted through each microcell C1 of the third light diffraction element 1c mainly interferes with the signal light transmitted through the other microcells C1 of the third light diffraction element 1c, and is mainly micro in the light receiving device 13. It is input to each cell corresponding to the cell C1.
- the signal light transmitted through each microcell C2 of the third light diffraction element 1c mainly interferes with the signal light transmitted through the other microcells C2 of the third light diffraction element 1c, and mainly receives light. Is input to each cell corresponding to the microcell C2.
- the thickness or refractive index of each microcell C1 of the optical diffraction elements 1a to 1c is an equal calculation performed by the optical diffraction element group 11 when the microcells C2 of the optical diffraction elements 1a to 1c are masked. It is set to be. In other words, the thickness or refractive index of each microcell C1 of the optical diffraction elements 1a to 1c is the thickness or refractive index of each microcell C1 of the third optical diffraction element 1c when the microcells C2 of the optical diffraction elements 1a to 1c are masked.
- the phase distribution or intensity distribution of the signal light output from is set to match the phase distribution or intensity distribution of the signal light input to each microcell C1 of the first light diffraction element 1a.
- the thickness or refractive index of each microcell C2 of the optical diffraction elements 1a to 1c is constantly determined by the optical calculation executed by the optical diffraction element group 11 when the microcells C1 of the optical diffraction elements 1a to 1c are masked. It is set to be an operation other than the equal operation.
- the thickness or refractive index of each microcell C2 of the optical diffraction elements 1a to 1c is the thickness or refractive index of each microcell C2 of the third optical diffraction element 1c when the microcells C1 of the optical diffraction elements 1a to 1c are masked.
- the phase distribution or intensity distribution of the signal light output from is set so as not to match the phase distribution or intensity distribution of the signal light input to each microcell C2 of the first light diffraction element 1a.
- the signal light detected by the cells corresponding to the microcells C1 of the light diffraction elements 1a to 1c represents the information before the calculation.
- the information before the calculation refers to the information represented by the signal light output from the cells corresponding to the microcells C1 of the optical diffraction elements 1a to 1c among the cells constituting the light emitting device 12.
- the signal light detected by the cells corresponding to the microcells C2 of the light diffraction elements 1a to 1c represents the information after the calculation.
- the information after the calculation is predetermined with respect to the information represented by the signal light output from the cells corresponding to the microcells C1 of the optical diffraction elements 1a to 1c among the cells constituting the light emitting device 12. It refers to the information obtained by performing an operation.
- the optical calculation system 10 it is possible to realize an optical calculation for deriving the information after the calculation while storing the information before the calculation by using the optical diffraction element group 11.
- the optical calculation system 10 can be suitably used for a defect extraction calculation for extracting defects of a subject from an image.
- the defect image including only the defect extracted from the original image and the original image can be detected by the light receiving device 13, respectively.
- the signal light output from the light emitting device 12 is immediately input to the light diffraction element group 11, and the signal light output from the light diffraction element group 11 is immediately input to the light receiving device 13.
- the present invention is not limited to this.
- a single or a plurality of other optical diffraction elements are arranged on the optical path of the signal light output from the light emitting device 12, and the light transmitted through these or these optical diffraction elements is input to the optical diffraction element group 11. May be adopted.
- the optical calculation system 10A shown in FIG. 4 has a configuration in which a single optical diffraction element 14 is arranged in front of the optical diffraction element group 11 and signal light output from the optical diffraction element 14 is input to the optical diffraction element group 11. Is adopted.
- the optical calculation system 10B shown in FIG. 4 has a configuration in which a single optical diffraction element 14 is arranged in front of the optical diffraction element group 11 and signal light output from the optical diffraction element 14 is input to the optical diffraction element group 11. Is adopted.
- the optical calculation system 10C shown in FIG. 6 has a configuration in which a single optical diffraction element 14 is arranged in the front stage of the optical diffraction element group 11 and a single optical diffraction element 15 is arranged in the rear stage of the optical diffraction element group 11. It was adopted.
- the optical calculation system includes a group of optical diffraction elements including n (n is a natural number of 2 or more) optical diffraction elements, and each optical diffraction element belonging to the optical diffraction element group has a thickness or a thickness. It is a plurality of cells in which the refractive electrodes are set independently of each other, and is composed of a plurality of cells classified into two types of cells C1 and C2. The thickness or refractive index of the light is set so that the optical calculation performed by the light diffusing element group becomes a uniform calculation when the cell C2 of each light diffusing element belonging to the light diffusing element group is masked. ..
- the signal light representing the information after the calculation is output from the cell C2 of the nth optical diffraction element, and the signal light representing the information before the calculation is output from the cell C1 of the nth optical diffraction element. can do.
- the cells C1 and C2 are arranged in a staggered pattern in each optical diffraction element belonging to the optical diffraction element group.
- the configuration is adopted.
- the signal light representing the information after the calculation is output from the cell C2 of the nth optical diffraction element, and the signal light representing the information before the calculation is output from the cell C1 of the nth optical diffraction element. can do.
- one or more other optical diffractions arranged in front of the first optical diffraction element belonging to the optical diffraction element group.
- a configuration is adopted in which one or both of the element and one or more other optical diffraction elements arranged after the nth optical diffraction element belonging to the optical diffraction element group are further provided.
- signal light output from one or more other optical diffractive elements arranged in front of the first optical diffractive element is input to the optical diffractive element group and / or.
- the signal light output from the optical diffractive element group can be input to one or more other optical diffractive elements arranged after the nth optical diffractive element.
- a configuration is adopted in which a light receiving device for detecting signal light output from one or more other light diffusing elements arranged after the nth light diffusing element is further provided. There is.
- the signal light representing the information before the calculation can be detected by the cell corresponding to the cell C1 of the optical diffraction element.
- the signal light representing the information before the calculation can be input to the cell corresponding to the cell C1 of the optical diffraction element.
- the information before the calculation refers to the information represented by the signal light output from the cell corresponding to the cell C1 of the optical diffraction element among the cells constituting the light emitting device.
- the signal light representing the information after the calculation can be detected by the cell corresponding to the cell C2 of the optical diffraction element.
- the signal light representing the information after the calculation can be input to the cell corresponding to the cell C2 of the optical diffraction element.
- the information after the calculation is obtained by performing a predetermined calculation on the information represented by the signal light output from the cell corresponding to the cell C2 of the optical diffraction element among the cells constituting the light emitting device. Refers to the information obtained.
- the thickness or the refractive index of the cell C2 of each optical diffraction element belonging to the optical diffraction element group is the optical diffraction.
- the optical calculation executed by the optical diffraction element group is set to be an operation other than the constant calculation.
- the signal light representing the information after the calculation is output from the cell C2 of the nth optical diffraction element, and the signal light representing the information before the calculation is output from the cell C1 of the nth optical diffraction element. can do.
- optical diffraction element in the present specification is an element that converts an optical signal representing a certain information (for example, a certain image) into an optical signal representing another information (for example, another image). Therefore, in the same sense that an element that converts an electric signal representing an image into an electric signal representing another image is called a filter, the "optical diffraction element" in the present specification is paraphrased as an "optical filter". be able to.
- the optical arithmetic system disclosed in the present specification can also be expressed as follows.
- the optical calculation system includes an optical filter group including n optical filters (n is a natural number of 2 or more), and each optical filter belonging to the optical filter group has a refractive index set independently of each other.
- the phase distribution of the output signal light is set to match the phase distribution of the signal light input to the cell C1 of the first optical filter.
- the cell C1 and the cell C2 are arranged in a staggered pattern. ing.
- one or more other optical filters arranged in front of the first optical filter and the nth optical filter in addition to the configuration of the aspect A or B, one or more other optical filters arranged in front of the first optical filter and the nth optical filter.
- a configuration is adopted in which one or both of one or more other optical filters arranged in the subsequent stage are further provided.
- the signal light input to the first optical filter or the signal light arranged in front of the first optical filter 1 A light emitting device that generates signal light to be input to one or more other optical filters, signal light output from the nth optical filter, or one or more arranged after the nth optical filter.
- a configuration is adopted in which a light receiving device for detecting signal light output from another optical filter is further provided.
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Abstract
Description
本発明の一実施形態に係る光回折素子1の構成について、図1及び図2を参照して説明する。図1は、光回折素子1の平面図である。図2は、光回折素子1の一部分(図1において破線で囲んだ部分)を拡大した斜視図である。
光回折素子1を含む光演算システム10の構成について、図3を参照して説明する。図3は、光演算システム10の構成を示す斜視図である。
本発明の態様1に係る光演算システムは、n個(nは2以上の自然数)の光回折素子を含む光回折素子群を備え、前記光回折素子群に属する各光回折素子は、厚み又は屈折率が互いに独立に設定された複数のセルであって、2種類のセルC1,C2に分類される複数のセルにより構成されており、前記光回折素子群に属する各光回折素子のセルC1の厚み又は屈折率は、前記光回折素子群に属する各光回折素子のセルC2をマスクしたときに、前記光回折素子群により実行される光演算が恒等演算になるように設定されている。
本発明は、上述した実施形態に限定されるものでなく、請求項に示した範囲で種々の変更が可能であり、上述した実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても、本発明の技術的範囲に含まれる。
10 光演算システム
11 光回折素子群
12 発光装置
13 受光装置
Claims (5)
- n個(nは2以上の自然数)の光回折素子を含む光回折素子群を備え、
前記光回折素子群に属する各光回折素子は、厚み又は屈折率が互いに独立に設定された複数のセルであって、2種類のセルC1,C2に分類される複数のセルを含み、
前記光回折素子群に属する各光回折素子のセルC1の厚み又は屈折率は、前記光回折素子群に属する各光回折素子のセルC2をマスクしたときに、前記光回折素子群により実行される光演算が恒等演算になるように設定されている、
ことを特徴とする光演算システム。 - 前記光回折素子群に属する各光回折素子において、セルC1及びセルC2は、それぞれ千鳥状に配置されている、
ことを特徴とする請求項1に記載の光演算システム。 - 前記光回折素子群に属する1番目の光回折素子の前段に配置された1個以上の他の光回折素子、及び、前記光回折素子群に属するn番目の光回折素子の後段に配置された1個以上の他の光回折素子の一方又は両方を更に備えている、
ことを特徴とする請求項1又は2に記載の光演算システム。 - 前記光回折素子群に属する1番目の光回折素子に入力する信号光、又は、前記1番目の光回折素子の前段に配置された1個以上の他の光回折素子に入力する信号光を生成する発光装置と、
前記光回折素子群に属するn番目の光回折素子から出力された信号光、又は、前記n番目の光回折素子の後段に配置された1個以上の他の光回折素子から出力された信号光を検出する受光装置と、を更に備えている、
ことを特徴とする請求項1~3の何れか一項に記載の光演算システム。 - 前記光回折素子群に属する各光回折素子のセルC2の厚み又は屈折率は、前記光回折素子群に属する各光回折素子のセルC1をマスクしたときに、前記光回折素子群により実行される光演算が恒等演算以外の演算になるように設定されている、
ことを特徴とする請求項1~4の何れか一項に記載の光演算システム。
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| JP2022505414A JP7320124B2 (ja) | 2020-07-03 | 2021-06-04 | 光演算システム |
| US17/633,835 US12481305B2 (en) | 2020-07-03 | 2021-06-04 | Optical computing system |
| CN202180004923.2A CN114223001A (zh) | 2020-07-03 | 2021-06-04 | 光运算系统 |
| EP21831570.3A EP4177701A4 (en) | 2020-07-03 | 2021-06-04 | OPTICAL CALCULATION SYSTEM |
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- 2021-06-04 CN CN202180004923.2A patent/CN114223001A/zh active Pending
- 2021-06-04 US US17/633,835 patent/US12481305B2/en active Active
- 2021-06-04 WO PCT/JP2021/021373 patent/WO2022004277A1/ja not_active Ceased
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023145206A1 (ja) * | 2022-01-31 | 2023-08-03 | 株式会社フジクラ | 光伝送路及び光コネクタ |
| JPWO2023145206A1 (ja) * | 2022-01-31 | 2023-08-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4177701A4 (en) | 2023-12-27 |
| US12481305B2 (en) | 2025-11-25 |
| US20220229461A1 (en) | 2022-07-21 |
| JP7320124B2 (ja) | 2023-08-02 |
| CN114223001A (zh) | 2022-03-22 |
| EP4177701A1 (en) | 2023-05-10 |
| JPWO2022004277A1 (ja) | 2022-01-06 |
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