10 results about "Spectral sensitivity" patented technology

Provided are a light emitting device capable of reducing glare, a headlight, and a vehicle including the same.The light emitting device comprises: a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less; and a wavelength conversion member including a first fluorescent material having a light emission peak wavelength in a range of 480 nm or more and less than 580 nm and a second fluorescent material having a light emission peak wavelength in a range of 580 nm or more and 680 nm or less and having a composition different from that of the first fluorescent material, wherein the light emitting device emits light having a first luminance ratio Ls / L that is 0.9 or less, where Ls / L is a ratio of a first effective radiance Ls of the light emitted by the light emitting device in consideration of a spectral luminous efficiency curve for photopic vision of humans specified by the CIE (Commission Internationale de l'Eclairage) and S-cone spectral sensitivity of humans, to a luminance L of the light emitted by the light emitting device in consideration of the spectral luminous efficiency curve for photopic vision of humans.

The application discloses a kind of high sediment concentration remote sensing inversion method and device of suspended load based on Sentinel-2 image, first, the satellite multispectral data and measured sediment concentration data of target water area are collected, and are preprocessed;Then the initial spectral feature set including the band feature combination of visible light-short wave infrared range is constructed, then the cross-validation recursive feature elimination algorithm (RFECV) is used to carry out preliminary screening from initial feature library, then according to spectral sensitivity analysis, the optimal feature subset is obtained by fine screening;Again, using random forest (RF) model is based on optimal spectral feature and sediment concentration data set training, constructs suspended load sediment concentration inversion model;Finally, the model is applied to realize the remote sensing inversion of high sediment concentration of suspended load, generates the sediment concentration time series of target water area.The present application effectively overcomes the common spectral saturation problem under high sediment concentration condition, can realize high-precision inversion in 0-45 kg / m³ concentration range, significantly improves the robustness and accuracy of suspended load high sediment concentration remote sensing inversion.

The photographing device (15) of the present application is provided with a camera (30), light sources (21-23), a band-pass filter (31), and a conversion unit (60). The camera (30) is provided with an image sensor (33) having a color filter of N bands (N is a natural number of 3 or more). The light sources (21-23) of M types (M is a natural number of 2≦M≦N) have emission spectrum characteristics each having a peak in a different wavelength region from each other within a visible light region and a near-infrared region. The conversion unit (60) performs matrix operation on a photographing signal (S1) of N bands obtained by the image sensor (33) when the camera (30) photographs an article (12), thereby generating image signals of M bands each having a spectral sensitivity in a different wavelength region from each other. The light directions and the emission intensities of the light sources (21-23) are selected respectively.

A substrate processing apparatus that can radiate light on a composition in an optimum radiation amount based on acquired spectral sensitivity characteristics can be provided. A substrate processing apparatus configured to perform pattern formation processing on a composition on a substrate includes a first radiation unit configured to radiate first light onto the substrate, a dispenser configured to apply the composition to a first position inside the substrate processing apparatus, a template holding unit configured to hold a template to be brought in contact with the composition on the substrate, and a controller configured to control a radiation amount of the first light to be radiated by the first radiation unit based on spectral sensitivity characteristics of the composition that are measured in advance.

The application discloses a kind of ocean oil pollution detection methods based on ultraviolet-visible light multimodal fusion, belong to marine environment monitoring field.The method is first to ultraviolet and visible light image pre-processing, constructs and trains by MobileNetV4 and ResNet18 The double-branch feature extraction network is extracted;Double-mode deep feature is extracted, and the weight is dynamically calculated by spectral sensitivity weighting module and adaptive weighted fusion is completed, and modal fusion feature is obtained;Finally, the feature is input into improved BiFPN to complete multi-scale weighted fusion, introduce 4 cross-modal multi-head attention mechanism to enhance features, output oil spill segmentation and detection results.The application deeply fuses double-mode complementary information, realizes multi-scale feature adaptive fusion and enhancement, reduces the complexity of calculation while ensuring high precision and strong robustness of detection, and can realize high-precision real-time detection of ocean oil pollution on resource-constrained edge platform, effectively solve the technical problems that single optical mode is easily disturbed by light, oil-water background is confused and edge device power is limited in complex sea conditions.

Possess: multiple color sensing part (51) ~ (54), including multiple color filter (511) ~ (541) and receive the light of multiple light receiving sensor (512) ~ (542) through each color filter (511) ~ (541); Multiple signal processing circuit (61) ~ (64) correspond to each of the multiple color sensing part, input from each color sensing part (51) ~ (54) signal, have integral function; Operation part (7), the output from each signal processing circuit (61) ~ (64) is operated. Multiple color sensing part (51) ~ (54) includes the color sensing part with the spectral sensitivity corresponding to the X component, Y component, Z component of the color matching function, the second color sensing part (52), (53) with the spectral sensitivity corresponding to the Y component is multiple. Each signal from the second color sensing part (52), (53) is processed in the corresponding signal processing circuit (62), (63), and is added in the operation part (7).

A communication terminal includes a host (C), a memory, a display device (ET), an input device (ET), a camera (CA) operating in the visible light range, wireless communication circuitry, an acoustic sensor, and an acoustic transducer. It also includes an image sensor (IM) operating in the invisible light range, distinct from the camera and capable of generating a series of pixel images in an invisible spectral domain outside the silicon spectral sensitivity range. The sensor includes an array of photosensitive elements sensitive to light in the invisible light range, the elements being disposed on a non-silicon substrate connected to readout circuitry on a silicon substrate, and bandpass filters (130; 140n; 150n) operating in the invisible light range and inserted into the light path. The terminal is configured to capture a set of images of a scene through multiple exposure stages of the array for multiple different focus axes of the sensor, wherein at least a portion of the pixels receive light emitted from the same part of the scene at different wavelengths in each exposure stage. The terminal also includes processing circuitry capable of combining the images captured in these stages such that the same photosensitive element in the array can be assigned at least two photometric values ​​within a range of at least two different spectral bands, with a resolution higher than the inherent resolution of the image sensor.

This invention relates to the fields of remote sensing image processing and agricultural and forestry monitoring technology, and provides a method and apparatus for compressing spectral data from unmanned aerial vehicles (UAVs). The method includes: acquiring spectral image data of a target area and determining a set of multi-indicator functional traits to be inverted in the target area; calculating the joint importance score of each spectral band to all functional traits based on the set of multi-indicator functional traits using a spectral sensitivity analysis model; dividing each spectral band into a core region, a transition region, and a redundant region according to the joint importance score; employing deep learning-based feature-preserving encoding for the core region, transform encoding for the transition region, and feature extraction encoding for the redundant region; and decoding and reconstructing the encoded streams of each region to obtain the target spectral data used for functional trait inversion. This achieves maximum preservation of key spectral information required for multi-indicator collaborative inversion under high compression ratio conditions, ensuring the accuracy of functional trait inversion in the reconstructed data.

A light emitting device comprises: a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less; and a wavelength conversion member including a first fluorescent material having a light emission peak wavelength in a range of 480 nm or more and less than 580 nm and a second fluorescent material having a light emission peak wavelength in a range of 580 nm or more and 680 nm or less and having a composition different from that of the first fluorescent material. The light emitting device emits light having a first luminance ratio Ls / L of 0.9 or less, the first luminance ratio Ls / L being a ratio of a first effective radiance Ls of the light emitted by the light emitting device in consideration of a spectral luminous efficiency curve for photopic vision of humans specified by CIE and the S-cone spectral sensitivity of humans, to a luminance L of the light emitted by the light emitting device in consideration of the spectral luminous efficiency curve for photopic vision of humans. The first fluorescent material comprises a rare earth aluminate fluorescent material having a composition represented by formula (1A).

The present invention relates to an optical testing device and an analysis method for analyzing a test object that can be arranged in a detection area against a background, comprising the background with a background-side light source configured for a specific configuration of the background such that light with a background-side spectral distribution can be generated at a variable radiant power for illuminating the background, a reflected-light-side light source configured for reflected-light illumination of the test object such that light with a reflected-light-side spectral distribution can be emitted onto the test object that can be arranged in the detection area, wherein the background-side spectral distribution differs from the reflected-light-side spectral distribution, and a monochrome camera configured for imaging the detection area.that light, according to its spectral distribution, can be detected with spatial accuracy by a spectral sensitivity value and thus as a spectral gray value in an image. According to the invention, the testing device comprises control means that are designed to interact with the background light source in such a way that the radiant power of the light from the background light source can be varied according to a setpoint value in order to influence the gray value in the background area of ​​the image.