Abstract: An imaging system including an image acquisition device, a light-field imaging arrangement including an optical meta-device operable to facilitate imaging of a light-field of a target scene, and a structured-light imaging arrangement including an optical meta-device operable to facilitate generation of structured-light to be provided to a target scene to facilitate imaging of the target scene. The light-field imaging arrangement and the structured-light imaging arrangement are operably coupled with the image acquisition device such that the imaging system is selectively operable in, at least, a light-field imaging mode for performing light-field imaging of the target scene and a structured-light imaging mode for performing structured-light imaging of the target scene. The optical meta-device of the light-field imaging arrangement and the optical meta-device of the structured-light imaging arrangement may be provided by the same optical meta-device.

Abstract: Compound eyes of insects are great optical system for imaging and sensing by the nature creator, which is an unsurpassed challenge due to its precision and small size. Here, we use meta-lens consisting of GaN nano-antenna to open the fascinating doorway to full-color achromatic light field imaging and sensing. A 60×60 multi-channels meta-lens array is used for effectively capturing multi-dimensional optical information including image and depth. Based on this, the multi-dimensional light field imaging and sensing of a moving object is capable to be experimentally implemented. Our system presents a diffraction-limit resolution of 1.95 micrometer via observing the standard resolution test chart under white light illumination. This is the first mimic optical light field imaging and sensing system of insect compound eye, which has potential applications in micro robotic vision, non-men vehicle sensing, virtual and augmented reality, etc.

Abstract: A harmonic light-generating metasurface includes a base substrate and a plurality of structures, that include nonlinear material, that are disposed in a pattern on a surface of the base substrate. Each structure of the plurality of structures individually supports a magnetic dipole mode. An electromagnetic field enhancement of the magnetic dipole mode induces generation of a harmonic signal by the plurality of structures. Alternatively, a harmonic light-generating metasurface, includes a base substrate, a supporting substrate that includes a nonlinear material, and a plurality of paired structures disposed in a pattern on a surface of the supporting substrate. Each paired structure, of the plurality of paired structures, collectively supports a toroidal dipole mode. An electromagnetic field enhancement of the toroidal dipole mode penetrates the supporting substrate to induce generation of a harmonic signal by the supporting substrate.

Abstract: A harmonic light-generating metasurface includes a base substrate and a plurality of structures, that include nonlinear material, that are disposed in a pattern on a surface of the base substrate. Each structure of the plurality of structures individually supports a magnetic dipole mode. An electromagnetic field enhancement of the magnetic dipole mode induces generation of a harmonic signal by the plurality of structures. Alternatively, a harmonic light-generating metasurface, includes a base substrate, a supporting substrate that includes a nonlinear material, and a plurality of paired structures disposed in a pattern on a surface of the supporting substrate. Each paired structure, of the plurality of paired structures, collectively supports a toroidal dipole mode. An electromagnetic field enhancement of the toroidal dipole mode penetrates the supporting substrate to induce generation of a harmonic signal by the supporting substrate.

Abstract: The present invention provides a device for generating an abrupt autofocusing beam, comprising a light source module, a metasurface phase modulating element, and a focus lens, wherein the light source module generates an incident light beam, the metasurface modulating element has a first optical receiving surface for receiving the incident light beam, and an optical emitting surface having a plurality of dielectric nano-structures formed thereon for modulating the incident light beam into a diffracted light beam wherein the plurality of nano-structures respectively corresponding to optical-phase mask patterns, and the focus lens is arranged at a side of the optical receiving surface for performing optical Fourier transform of the diffracted light beam obtained from the metasurface phase modulating element.

Abstract: The present invention provides an optical component comprising a dielectric layer and a nanorod array; the nanorod array is formed on a surface of the dielectric layer and extends along a lateral direction and a vertical direction. The nanorod array comprises a plurality of nanorods extending along the dielectric layer. The nanorods have a gap between one another, and an angle is defined by two adjacent nanorods. A bump is formed at each of two ends of the nanorod.

Abstract: In this disclosure, an optical component which comprises an array of metalenses is provided. Each metalens comprises a plurality of nanostructures and a dielectric layer and the nanostructures are disposed on the dielectric layer, and the nanostructures comprises an array of first phase compensation structures, and an array of second phase compensation structures. The array of the first phase compensation structures are disposed to surround the array of the second phase compensation structures so as to define a single metalens. The first and second phase compensation structures are complementary to each other and substantially satisfy the Babinet's principle.

Abstract: Compound eyes of insects are great optical system for imaging and sensing by the nature creator, which is an unsurpassed challenge due to its precision and small size. Here, we use meta-lens consisting of GaN nano-antenna to open the fascinating doorway to full-color achromatic light field imaging and sensing. A 60×60 multi-channels meta-lens array is used for effectively capturing multi-dimensional optical information including image and depth. Based on this, the multi-dimensional light field imaging and sensing of a moving object is capable to be experimentally implemented. Our system presents a diffraction-limit resolution of 1.95 micrometer via observing the standard resolution test chart under white light illumination. This is the first mimic optical light field imaging and sensing system of insect compound eye, which has potential applications in micro robotic vision, non-men vehicle sensing, virtual and augmented reality, etc.

Abstract: In this disclosure, an optical component which comprises an array of metalenses is provided. Each metalens comprises a plurality of nanostructures and a dielectric layer and the nanostructures are disposed on the dielectric layer, and the nanostructures comprises an array of first phase compensation structures, and an array of second phase compensation structures. The array of the first phase compensation structures are disposed to surround the array of the second phase compensation structures so as to define a single metalens. The first and second phase compensation structures are complementary to each other and substantially satisfy the Babinet's principle.

Abstract: The present invention provides an optical component comprising a dielectric layer and a nanorod array; the nanorod array is formed on a surface of the dielectric layer and extends along a lateral direction and a vertical direction. The nanorod array comprises a plurality of nanorods extending along the dielectric layer. The nanorods have a gap between one another, and an angle is defined by two adjacent nanorods. A bump is formed at each of two ends of the nanorod.

Abstract: A phase-modulated optical component for the visible spectrum is provided and is capable of producing images in three primary colors. The phase-modulated optical component is primarily structured by a plurality of aluminum nanorods that are arranged in several two-dimensional arrays to form a plurality of pixels. The nanorods can yield surface plasmon resonances in red, green and blue light. By tuning the nanorod size in the arrays, the wavelength-dependent reflectance thereof can be varied across the visible spectrum, thereby realizing wavelength division multiplexing operations for the phase-modulated optical component.

Abstract: An active photocatalytic reactor configured to process biological culturing water with an accelerated process. Water to be used in a biological culturing system is stabilized with pollutants in the water reduced. The active photocatalytic reactor is less affected by outside environment while having faster activating speed. The active photocatalytic reactor can further be combined with a traditional filter to form a serial or parallel connection for more effectively purifying the culturing water with damage to the whole system avoided.

Abstract: A composite material which expands the range of light-absorption of an original constitution material, which is formed through two or more total oxides contacting and fixing to the oxygen reduced oxides with the same composition of materials as the total oxides. The composite material can excite the light-driven reaction to achieve an enlarged absorption range of the light band. In the contacting and fixing process of the composite material, a calcination process is not required, so that the process can be applied to a substrate which is plastic or not suitable for high-temperature heating.

Abstract: An image-based refractive index measuring system comprises an optical device and an electronic device. The optical device is used to guiding an external light which is passed through an analyte. The electronic device comprises an image capture module, an image analyze module and a display module. The image capture module generates a first image by capturing the external light source. The image analyze module connects to the image capture module to receive the first image, and analyzes the first image in order to generate an analytical result comprising the refractive index of the analyte. The display module connects to the image analyze module to receive and display the analytical result.

Abstract: The present invention discloses a gamma dose rate measurement system comprising a shielding device and an electronic device. The shielding device is arranged for masking a visible light, so that only a light source substantially being a gamma ray passes through the shielding device. The electronic device comprises a sensing module, an image analysis module and a display module. The sensing module generates a current signal after sensing the gamma ray; the image analysis module receives the current signal and generates an analysis result including a total gamma dose rate and a gamma energy spectrum; and the display module is arranged for displaying the analysis result.

Abstract: A metamaterial structure and method of manufacturing the same are disclosed. The metamaterial includes a substrate, a first resonance unit and a second resonance unit. The surface of the substrate has a bump. The first resonance unit and the second resonance unit are disposed on an adhesive direction from the bump, whereby forming the sterical resonance unit, which is able to increase the coupling efficiency of incident light in some specific frequency and form an in-situ reconfigurable metamaterial.

Abstract: An image-based diopter measuring system comprises an optical device and an electronic device. The optical device is used to guiding an external light which is passed through an analyte. The electronic device comprises an image capture module, an image analyze module and a display module. The image capture module generates a first image by capturing the external light source. The image analyze module connects to the image capture module to receive the first image, and analyzes the first image in order to generate an analytical result comprising the diopter of the analyte. The display module connects to the image analyze module to receive and display the analytical result.

Abstract: A method for measuring propagation loss in a plane light guide plate, which includes the following steps of making an input light generated by an input light generator pass through an optical coupler, an optical reflection device individually or pass through the optical coupler first and then the optical reflection device, and finally propagate toward an optical measurement device to obtain at least one optical parameter according to the optical coupler, the optical reflection device or the combination thereof; and making the input light pass through the optical coupler and then the plane light guide plate, and further pass through the plane light guide plate from one side thereof toward the optical reflection device in order to reflect the input light toward the optical measurement device, so as to obtain a propagation loss of the plane light guide plate according to the at least one optical parameter.

Abstract: A non-visible particle detection device includes an optical module capable of converting an ionizing radiation into visible light. The optical module includes has an attachment unit that is configured to removably attach the optical module to the image capturing module of a mobile device. The image capturing module generates a photon digital image based on the photons converted from the ionizing radiation. The mobile device can be implemented with a radiation dose determining module to execute a radiation dose equivalent calculation method. Based on the pixel brightness analysis of the photon digital image, the radiation equivalent dose can be determined. This method sums up the total brightness of all pixels in the images, determines whether the total brightness is smaller than the minimum effective brightness, and determines the radiation equivalent dose when the total brightness is equal to or larger than the minimum effective brightness.

Abstract: A near-field optical disk having surface plasmon amplification by stimulated emission of radiation (SPASER) is provided. The near-field optical disk having SPASER includes a transparent substrate, a first transparent dielectric thin film layer formed on the transparent substrate, a SPASER thin film layer formed on the first transparent dielectric thin film layer, a second transparent dielectric thin film layer formed on the SPASER thin film layer, a recording thin film layer formed on the second transparent dielectric thin film layer, and a third transparent dielectric thin film layer formed on the recording thin film layer.