Abstract: Provided is a magnetic strain wave gear device that makes it possible to achieve both improvement of the efficiency of assembly work and suppression of decrease in energy conversion efficiency. A magnetic strain wave gear device includes: a stator having a stator core, a stator winding, and a stator magnet; a first rotor; and a second rotor. The second rotor includes a second rotor core provided with a plurality of rotor magnet insertion holes and a plurality of rotor magnets inserted into the plurality of respective rotor magnet insertion holes. The first rotor includes a cylindrical first rotor core and a first rotor end plate. The first rotor end plate has a rotor magnet passage hole through which the rotor magnets can be inserted into the rotor insertion holes from outside in a direction of a rotation shaft.

Abstract: There is provided an information processing apparatus that generates an encrypted bit string in which a hash value calculated by using keyed hashing from a keyword for an information search is mapped into a bit string having a predetermined length, selects a predetermined number of bits from the encrypted bit string on the basis of a dynamically generated random number, inverts the predetermined number of selected bits, and sends the encrypted bit string and inverted-bit-number information to an external apparatus. The inverted-bit-number information indicates a number of bits inverted by a bit inverting unit.

Abstract: An information processing device (30) includes a first recording unit (331), a verification unit (332), and a second recording unit (333). In response to a request from an information management device (20) that manages data, the first recording unit (331) records information regarding a browsing right of data in a blockchain. The verification unit (332) verifies a zero-knowledge proof for proving that a user is a valid user who has been given the browsing right on the basis of the information regarding the browsing right written in the blockchain. The second recording unit (333) records information regarding a verification result of the proof in the blockchain.

Abstract: Lenses are arrayed in a lattice on an array surface of a microlens array. A lens has a convex surface that is cylindrical throughout sections that are parallel to a lattice direction of the lens and are orthogonal to the array surface. In each of meridians of the sections parallel to the lattice direction of the lens, a sag amount is corrected so as to increase an inclination of a skirt. In another aspect, a lens has a concave surface that is cylindrical throughout sections that are parallel to a lattice direction of the lens and are orthogonal to an array surface. In each of meridians of the sections parallel to the lattice direction of the lens, a sag amount is corrected so as to increase an inclination of a rim.

Abstract: There is provided an information processing system including: a first apparatus (10a) that divides a user key (UK) of a share-source user through a secret distribution process to generate a plurality of distribution keys (S1 and S2); a second apparatus (10b) that sends a processing request to execute a predetermined process by using one of a plurality of the distribution keys generated by the first apparatus; and a third apparatus (20) that makes a determination based on one of a plurality of the distribution keys generated by the first apparatus and the processing request received from the second apparatus.

Abstract: The generation device (20) is a generation device for generating certification information used for verification using zero-knowledge proof, and includes a conditional expression generation unit (23a) and a certification information generation unit (23b). The conditional expression generation unit (23a) generates, for different conditions, a plurality of conditional expressions that defines confidential information under one or more conditions. The certification information generation unit (23b) generates, as the certification information, a plurality of proofs based on each of the conditional expressions.

Abstract: There is provided an information processing device including: a communication unit configured to receive a first hash value calculated using a first sharing key from a terminal; and a dividing unit configured to determine a division unit of a word used for document search on the basis of matching between an encryption dictionary and a second hash value that is calculated by performing a homomorphic hash operation on the first hash value using a second sharing key corresponding to the first sharing key, in which the communication unit transmits, to the terminal, encrypted information related to the division unit determined by the dividing unit.

Abstract: The present invention provides a diffuser plate in a simple structure capable of achieving optical properties with less luminance irregularity and color irregularity and good quality of appearance. A diffuser plate is a diffuser plate where a plurality of microlenses are placed on a principal surface, shapes of the plurality of microlenses along a cross-section perpendicular to the principal surface are different from one another and do not have an axis of symmetry. A method for designing the diffuser plate includes steps of determining a specific reference microlens; placing the reference microlens on the principal surface; forming a specific phase modulation shape; and determining a shape of the plurality of microlenses by combining the specific reference microlens and the specific phase modulation shape.

Abstract: A transmission-type or reflection-type diffuser plate including a planar base material on which an optical element having an effective diameter of “a” in an X-axis direction and an effective diameter of “b” in a Y-axis direction is provided to constitute an a×b two-dimensional basic periodic structure, each of the basic periodic structure having an Na×Mb two-dimensional periodic phase structure in which a basic block has N rows and M columns including N optical elements in the X-axis direction and M optical elements in the Y-axis direction, the diffuser plate being configured such that if a phase structure Pnm in the n-th row and the m-th column is expressed by Pn1+P1m, and directivity is represented by square of the absolute value of Fourier transform of complex transmittance or complex reflectance of an optical element in the n-th row and the m-th column in the basic block; a ratio of standard deviation to average of the directivity is 0.3 or less.

Abstract: Provided is a diffuser plate that makes it possible to mitigate unevenness of luminance or unevenness of color while suppressing speckle noise of transmitted light or reflected light. The diffuser plate of the present invention includes a microlens array having a structure that creates an optical path length difference for incident light or reflected light, the microlenses having the same effective diameter. The microlens array constitutes a basic block structure in which periodic arrangement is provided with a period of an integer multiple of the effective diameter, a two-dimensional second periodic structure having a period that is N times the period of the microlens array in the basic periodic structure is configured by a repetitive arrangement of the basic blocks, and the microlenses are set to create an optical path length difference based upon a specific arrangement within the basic block structure.

Abstract: A diffuser plate includes a plurality of fine structures having two or more types of lens functions arranged on a main surface. Intensity of diffused light within a desired diffusion angle range is substantially uniform, and the diffuser plate satisfies a relation of P×P×Sk?400 [?m2], where P is an average pitch of the plurality of fine structures, Sk is a standard deviation of relative luminance of the plurality of fine structures in their front directions, P?200 [?m], and Sk?0.005. Thus, it is possible to provide a diffuser plate having a simple structure capable of achieving optical properties with little luminance and color unevenness and excellent appearance quality when an image is projected.

Abstract: The present invention provides a diffuser plate whose luminance of emission light emitted from a microlens is even in a diffusion range. The diffuser plate comprises a projection side main surface, an emission side main surface, and a fine structure having a plurality of microlens shape parts with a microlens-like shape. A numerical aperture NA of the projection light is greater than 0 and 0.140 or less. An incident angle ?i formed by an optical axis of the projection light at the microlens shape part and a normal of the projection side main surface intersecting with each other is in a range of 0 to 50 degrees. At least one of the plurality of microlens shape parts emits the emission light at an emission angle ?o formed by the optical axis of the emission light and the normal of the projection side main surface intersecting with each other.

Abstract: There is provided an information processing system including: a first apparatus (10a) that divides a user key (UK) of a share-source user through a secret distribution process to generate a plurality of distribution keys (S1 and S2); a second apparatus (10b) that sends a processing request to execute a predetermined process by using one of a plurality of the distribution keys generated by the first apparatus; and a third apparatus (20) that makes a determination based on one of a plurality of the distribution keys generated by the first apparatus and the processing request received from the second apparatus.

Abstract: There is provided an information processing apparatus that generates an encrypted bit string (102) in which a hash value calculated by using keyed hashing from a keyword (101) for an information search is mapped into a bit string having a predetermined length, selects a predetermined number of bits from the encrypted bit string on the basis of a dynamically generated random number (103), inverts the predetermined number of selected bits, and sends the encrypted bit string and inverted-bit-number information to an external apparatus. The inverted-bit-number information indicates a number of bits inverted by a bit inverting unit (15).

Abstract: A diffuser plate capable of achieving excellent appearance quality when an image is projected. A transmissive diffuser plate including a microlens angle modulation distribution group provided on at least one of a light incident surface and a light emitting surface is provided. A microlens angle modulation distribution group includes a plurality of microlenses and an angle modulation part having an angle modulation distribution for angle-modulating a direction of main light emitted from each of the plurality of microlenses. When a ratio ?/P of a wavelength ? [?m] of the main light to an average arrangement period P [?m] of the microlens is denoted by ? [rad], and when the direction of the main light emitted from each of the plurality of microlenses is modulated by a modulation angle ? [rad], a ratio ?/? of the modulation angle ? to ? satisfies 0.1<?/?<10.0.

Abstract: A composite diffuser plate capable of inhibiting luminance unevenness from occurring locally is described. The composite diffuser plate includes a first diffuser plate and a second diffuser plate arranged in this order from an incident side. At least one of the first diffuser plate and the second diffuser plate is composed of a random microlens array including multiple microlenses. The microlenses include a plurality of parameters defining a lens shape. At least one of the plural parameters is randomly distributed. The random microlens array causes a phase difference to be generated in transmitted light.

Abstract: Provided is a diffuser plate that makes it possible to mitigate unevenness of luminance or unevenness of color while suppressing speckle noise of transmitted light or reflected light. The diffuser plate of the present invention includes a microlens array having a structure that creates an optical path length difference for incident light or reflected light, the microlenses having the same effective diameter. The microlens array constitutes a basic block structure in which periodic arrangement is provided with a period of an integer multiple of the effective diameter, a two-dimensional second periodic structure having a period that is N times the period of the microlens array in the basic periodic structure is configured by a repetitive arrangement of the basic blocks, and the microlenses are set to create an optical path length difference based upon a specific arrangement within the basic block structure.

Abstract: The present invention provides a diffuser plate whose luminance of emission light emitted from a microlens is even in a diffusion range. The diffuser plate comprises a projection side main surface, an emission side main surface, and a fine structure having a plurality of microlens shape parts with a microlens-like shape. A numerical aperture NA of the projection light is greater than 0 and 0.140 or less. An incident angle ?i formed by an optical axis of the projection light at the microlens shape part and a normal of the projection side main surface intersecting with each other is in a range of 0 to 50 degrees. At least one of the plurality of microlens shape parts emits the emission light at an emission angle ?o formed by the optical axis of the emission light and the normal of the projection side main surface intersecting with each other.

Abstract: The present invention provides a diffuser plate in a simple structure capable of achieving optical properties with less luminance irregularity and color irregularity and good quality of appearance. A diffuser plate is a diffuser plate where a plurality of microlenses are placed on a principal surface, shapes of the plurality of microlenses along a cross-section perpendicular to the principal surface are different from one another and do not have an axis of symmetry. A method for designing the diffuser plate includes steps of determining a specific reference microlens; placing the reference microlens on the principal surface; forming a specific phase modulation shape; and determining a shape of the plurality of microlenses by combining the specific reference microlens and the specific phase modulation shape.

Abstract: The present invention provides a diffuser plate in a simple structure capable of achieving optical properties with less luminance irregularity and color irregularity and good quality of appearance. A diffuser plate is a diffuser plate where a plurality of microlenses are placed on a principal surface, shapes of the plurality of microlenses along a cross-section perpendicular to the principal surface are different from one another and do not have an axis of symmetry. A method for designing the diffuser plate includes steps of determining a specific reference microlens; placing the reference microlens on the principal surface; forming a specific phase modulation shape; and determining a shape of the plurality of microlenses by combining the specific reference microlens and the specific phase modulation shape.