2632 results about "Lighting system" patented technology

The invention provides an intelligent control method for a floodlight illumination system, and the method comprises the steps: obtaining an environment surface roughness coefficient, spectral reflection distribution and spatial geometric change data, determining the wall surface material absorptivity and shielding region coordinates, and obtaining environment reflection characteristics and shielding distribution data; analyzing shielding boundary sharpness and shielding angle distribution according to the spatial geometric change and the coordinates of the shielding area, calculating a luminous flux distribution curve of a local dark area, and judging whether the influence range of the dark area exceeds a preset threshold range or not; calculating the illumination coverage integrity according to the updated light field distribution and polarization reflection characteristics, determining the boundary sharpness of a light beam, and obtaining a light field uniformity parameter; and according to the light field uniformity parameter and the shielding thermal radiation effect, calculating and optimizing light field parameters.

The invention discloses a fire-fighting early warning system and method based on artificial intelligence, and relates to the technical field of intelligent fire-fighting early warning, and the system comprises an environment sensing module which comprises a multispectral sensor, a temperature sensor, a smoke sensor and a high-definition camera, and is used for collecting fire characteristic spectral data and transmitting the data to a data analysis module; the data analysis module comprises an edge calculation unit and a data fusion unit, and is used for performing feature extraction and anomaly detection on the fire feature spectrum data through a deep learning model to generate a fire risk assessment result; the early warning decision module comprises a risk assessment unit, an early warning grading unit and a communication unit, and is used for determining an early warning grade according to a fire risk assessment result and triggering equipment of the execution feedback module; and the execution feedback module comprises a spraying system, an emergency lighting system and an alarm and is used for executing fire emergency measures according to the instruction of the early warning decision module. According to the invention, comprehensive improvement of fire prevention and control efficiency is realized through cooperative work of multiple modules.

The invention discloses a matrix layout illumination state detection method, device and equipment, and the method comprises the steps: collecting and analyzing a power supply bus current waveform and a single lamp feedback signal, and generating a node feature cluster; extracting a power consumption difference value of adjacent lamps, identifying an abnormal observation point and constructing a fault diffusion chain; marking a timestamp for the fault diffusion chain, determining a fault source, and marking current by injecting characteristics to delimit an influence domain; deploying monitoring anchor points at the boundary of the influence domain, collecting the light color parameter variation and predicting the residual life; extracting the oscillation envelope of the starting current peak, evaluating the health degree of the driver and generating a maintenance density field; and a three-dimensional detection field is constructed by fusing multi-dimensional detection data, singular points are searched, and coordinates of a fault lamp are accurately analyzed through fault positioning pulses. According to the invention, three-dimensional monitoring from electrical characteristics and optical performance to driver states is realized, a single lamp fault can be accurately positioned, a life trend can be predicted, fault propagation can be tracked, and technical support is provided for intelligent operation and maintenance of a large-scale illumination system.

The invention relates to the technical field of intelligent traffic and energy-saving illumination, in particular to an intelligent management and control method and system for energy-saving illumination of a highway tunnel and a computer program, and is suitable for an intelligent illumination control system for improving tunnel driving safety and energy efficiency of an illumination system. Dynamic response and fine energy consumption adjustment of tunnel lighting are realized through out-of-tunnel brightness multi-source fusion prediction, entrance section feedforward, closed-loop dimming control, a segmented intelligent lighting strategy based on vehicle detection and an in-tunnel brightness closed-loop and stepless dimming mechanism. The system has a multi-sensor redundancy mechanism and can automatically return to a safety mode when equipment fails, so that the continuity and the safety of illumination are guaranteed; and meanwhile, data summarization and energy-saving statistics are combined, control parameters are optimized in cooperation with a digital twinning or self-learning algorithm, the energy-saving effect and the operation and maintenance efficiency are further improved, and the purposes of traffic safety and low-carbon operation are considered.

The invention provides an energy-saving optimization method and device for intelligent city lighting and energy management. The method comprises the following steps: acquiring multi-source fusion data acquired by a multi-mode sensor configured at a lighting node in real time; carrying out coupling analysis on junction temperature fluctuation characteristics of the lighting equipment and a harmonic spectrum of a power supply system according to the multi-source fusion data, and determining dynamic characteristic parameters of the lighting equipment; constructing a multi-objective optimization function according to the dynamic characteristic parameters; and processing the multi-objective optimization function to generate a multi-domain collaborative optimization control strategy. Through implementation of the scheme of the invention, the finally output multi-domain cooperative control strategy can dynamically adjust illumination output and power supply deployment in real time according to the sensing data, and the overall energy consumption of the illumination system is effectively reduced.

The invention provides a whole-house health intervention lighting system and a lighting method thereof, and the system comprises a distributed multi-mode sensing layer which is used for non-inductively collecting the physiological, behavior and environment information of a user through a sensor module integrated in a lighting lamp; the edge calculation and model analysis layer is used for carrying out preprocessing and feature extraction on the data acquired by the distributed multi-mode perception layer and providing a model self-interpretation function; the decentralized federated artificial intelligence decision-making layer is used for constructing a personalized health model based on a federated learning framework, performing health state prediction and generating an intervention instruction; the cooperative multi-target intervention planning layer is used for converting the intervention instruction into a whole-house cooperative illumination control strategy; and the system health and fault-tolerant reconstruction layer is used for monitoring the state of the system and realizing function reconstruction when a fault occurs, and the organic cooperation among the layers realizes the capabilities of non-inductive monitoring, privacy protection, continuous learning and active intervention of the lighting system.

The invention relates to the technical field of intelligent lighting control, and discloses an LED lighting energy-saving control system based on data judgment, which comprises a data sensing module, a scene recognition module, a strategy storage module and a driving control module, the data sensing module is used for collecting personnel dynamic behavior information and environment illumination intensity information in an illumination area; the scene recognition module outputs a corresponding scene recognition signal by receiving, fusing and analyzing the sensing data; a mapping relation table is stored in the strategy storage module; and the driving control module queries the mapping relation table through the scene identification signal to obtain the illumination control parameter of the target, and converts the illumination control parameter into an instruction signal for driving the LED lamp. According to the invention, through multi-dimensional data fusion and scene adaptive control, refined energy saving of the lighting system is realized on the premise of ensuring comfort.

The invention provides an emergency lighting control chip and an emergency lighting system, the emergency lighting control chip is connected with an energy storage battery, an emergency lighting unit and a first node, the first node is used for receiving input current, both the energy storage battery and the emergency lighting unit are provided with positive ends and negative ends, and the emergency lighting control chip comprises a switch module. By setting the switching time sequence of the switch module, the functions of constant-current charging, full charge protection, overvoltage protection and emergency discharging can be realized in the emergency lighting control chip, an additional LED lamp does not need to be specially arranged, and the cost of manual wiring is lower.

The invention provides an intelligent self-adaptive lighting system based on environmental perception and behavior recognition, relates to the technical field of self-adaptive lighting control, and aims to determine an illumination perception rule during adaptive adjustment of the brightness of a lighting source in a target area according to a lighting adjacent path and dynamic atmosphere information, perform layered compensation on the illumination perception rule, and improve the brightness of the lighting source in the target area. Obtaining an adaptive compensation strategy when the illumination angle of the illumination light source is adjusted; according to the posture activity index and the behavior response index, determining a state partition constraint when the illumination light source in the target area carries out illumination partition decision making along with the user motion trail, and determining a light color rheological characteristic when the illumination light source carries out color temperature switching according to the state partition constraint; and carrying out self-correction matching on the illumination demand mode in the illumination environment of the target area according to the adaptive compensation strategy and the light color rheological characteristics. According to the invention, linkage self-correction control can be carried out on the illumination mechanism of the illumination light source, so that the real-time response capability of the intelligent illumination system under the driving of complex space behaviors is improved.

The invention relates to the technical field of industrial lighting control, in particular to a dynamic optimization regulation and control method and system for an industrial intelligent lighting lamp based on multi-mode environment perception and computer equipment. An environment feature matrix and a lamp portrait matrix are constructed by deploying a sensor network integrating illumination intensity, thermal distribution and production process light demand labels and combining lamps embedded with unique two-dimensional code labels and digital portraits of the lamps. A 0-1 continuous value priority matrix is generated based on cooperation of a multi-layer perceptron and FLC, and a control threshold is dynamically adjusted in combination with QoS parameters of an edge gateway. Under the abnormal working condition, a two-dimensional code maintenance work order is triggered, an adjacent lamp is activated to compensate illumination, meanwhile, a safety redundancy coefficient is fed back through a compensation effect, a dynamic demand model is driven to be iteratively upgraded, and a self-evolution system of'perception-decision-regulation-optimization 'is formed. According to the scheme, the environmental adaptability, the energy efficiency utilization rate and the operation and maintenance intelligent level of the industrial lighting system are remarkably improved, and real-time response and low-carbon energy conservation are both considered.

The invention relates to the technical field of illumination control, solves the problem that in the prior art, illumination control lacks self-learning ability, and consequently comfort and individual requirements are difficult to consider, and provides a scene-based LED lamp strip self-adaptive control method, device and equipment. The method comprises the steps of obtaining scene information of a physical space where an LED lamp strip is located, and obtaining illumination control strategies of the LED lamp strip in different time periods in a first preset period according to the scene information; in a first preset period, in response to a user switch instruction, illumination is performed according to the illumination control strategy and the environmental parameters of the current time period; updating the illumination control strategy according to historical illumination data in a first preset period; and after a first preset period, in response to a user switch instruction, controlling the LED lamp strip to illuminate according to the adjusted illumination control strategy and environmental parameters in the current time period. The intelligent level and the user satisfaction degree of the lighting system can be effectively improved.

The invention discloses an indoor zero-blue-light healthy lighting system and method, and relates to the technical field of healthy lighting, and the method comprises the steps: firstly, determining lighting parameters and demands in combination with the vision of old people and a pension scene; zero blue light layered lighting hardware is constructed; integrating a plurality of sensors and a plurality of control functions to form an intelligent control module; then, self-adaptive illumination adjustment is achieved through multiple algorithms; and finally, applying the adjusted system to pension scene verification, and forming an adaptive scheme according to feedback fine tuning parameters. Through zero blue light layered lighting hardware and a multi-source perception fusion algorithm, the system adapts to the visual and behavior requirements of the elderly, adopts a pure LED light source to eliminate blue light hazards, achieves the cooperation of layered lighting and intelligent control, achieves the dynamic adjustment to meet precise lighting and reduce energy consumption, and also responds to the environment and behaviors in real time through various algorithms, maintains color temperature transition and zero blue light output, and achieves the intelligent control of the elderly. And the health value and experience are improved.

The invention discloses an energy-saving amount calculation method based on a lighting system after building lighting energy-saving transformation, which relates to the technical field of intelligent lighting, and comprises the following steps: integrating preprocessed environment monitoring data and lighting quality image parameters by using a multi-modal data fusion mechanism, constructing an initial energy consumption reference value model to carry out regression analysis on comprehensive feature data, and calculating the energy-saving amount of the lighting system after building lighting energy-saving transformation; updating the initial energy consumption reference value model to generate a final energy consumption reference value model; and the remote energy consumption detection and diagnosis center carries out comparative analysis on the energy consumption reference value of the initial energy consumption reference value model and the energy consumption reference value of the final energy consumption reference value model, and outputs an energy saving amount calculation result in combination with a dynamic energy saving amount correction mechanism. According to the method, the preprocessed environment monitoring data and the illumination quality image parameters are integrated by using a multi-modal data fusion mechanism to generate the comprehensive feature data, and unified modeling of multiple factors influencing energy consumption is realized.

The utility model provides a track system and a lighting system, the track system comprises at least two track sections, each track section comprises an electric power guide rail, and a plurality of electric conductors extending along the length direction of the electric power guide rail are arranged in the electric power guide rail; the at least one connector comprises an electric connector, the electric connector comprises two electric connecting parts corresponding to the two electric power guide rails respectively, and the electric connector is provided with a rotating axis perpendicular to a connecting line between the two electric connecting parts; wherein the electric connector is configured to be pivotally arranged relative to the rotation axis and has a connection position and a disconnection position, and under the connection position, the two electric connection parts are electrically contacted with the electric conductors in the two electric power guide rails respectively; in the disconnected position, the at least one electrical connection portion is electrically isolated from the electrical conductor of the corresponding power rail. Compared with the prior art, the track system has the advantages that the electrical connection and disconnection among a plurality of track sections can be quickly realized, and the mounting and dismounting efficiency of the track system is improved.

An orientation specific lens coupled to a light emitting device suspended above an elongated space configured to illuminate specific horizontal and vertical subfields of the elongate space, producing illumination uniformity ratios. An AI engine and remote communications assist the lighting source to serve as an intelligence egress path according to various operational conditions.

The invention provides an intelligent illumination adaptive control method and system based on power line carrier and a storage medium, and the method comprises the steps: firstly building reliable connection with all illumination terminals and sensors through power line carrier communication, and then collecting the environment light intensity and human body state information through the sensors; secondly, judging whether a person exists in the lighting area or not according to the human body state, if not, triggering an energy-saving unmanned mode, and if yes, comparing the ambient light intensity with a target threshold value; if natural light is sufficient, illumination is maintained or turned down, if natural light is insufficient, human body motion features are extracted, the motion state is recognized through a preset model, brightness is increased for severe activities, duration is accumulated for a static state, and brightness or color temperature is adjusted in a self-adaptive mode according to a scene; and finally generating an instruction and issuing and executing through a power line. According to the invention, reliable communication and control are realized by power line carriers, serial threshold judgment and intelligent decision are carried out by fusing multi-dimensional environment information, and the intelligent level, the energy-saving effect and the user experience of a lighting system are improved.

The invention relates to the technical field of underwater operation equipment, solves the problems that existing dam underwater crack repairing depends on divers or complex equipment, the automation degree is low, the construction period is long, the comprehensive cost is high and the adaptability is poor, and particularly relates to concrete dam underwater crack repairing and leaking stoppage equipment which comprises a robot for underwater cruise, and the robot comprises a machine body; the cruise vision module comprises a foresight navigation lens group, a look-around lens group, a bottom wide-angle lens, an active illumination system, an obstacle avoidance sonar system and a topographic mapping sonar; the crack detection module comprises a crack scanning ultrasonic detector, a high-resolution strip-shaped scanning lens group, a laser ray scanner, a multispectral imager, a laser distance measuring sensor, a water flow sensor and an attitude sensor, the crack repairing module comprises two groups of mechanical arms for punching and grouting, and the central controller controls the robot to execute. Crack filling, structure bonding recovery and long-acting sealing are achieved, and meanwhile the construction difficulty and the comprehensive cost are reduced.

The invention discloses a liquid crystal glass defect detection device and a control method.The detection device comprises a transmission mechanism, a portal frame and an optical imaging assembly, specifically, the angle of a camera is adjusted through an imaging adjusting assembly to meet the Gremer's law, the limitation of the depth of field of an inclined plane is solved, and single-time full-clear imaging is achieved; in the lighting system, a side-in type optical coupling assembly drives an optical coupling head comprising a hard air floating block and a silica gel pad by utilizing a linear driving and floating suspension mechanism, and a fixed-distance air film is flexibly attached to the silica gel pad through the air floating block, so that friction-free floating relative to a glass side straight surface is realized. The liquid crystal glass defect detection device effectively solves the problems of coupling difficulty and collision damage caused by glass edge position fluctuation in high-speed transmission, ensures efficient and stable light coupling so as to enhance internal defect contrast, and ensures high-precision and high-efficiency online detection.

The invention belongs to the technical field of unmanned aerial vehicles and intelligent lighting, and particularly relates to an unmanned aerial vehicle intelligent dimming and lighting system self-adaptive to ambient light, which comprises an unmanned aerial vehicle platform, a lighting module, an environment sensing module, a flight state sensing module and an intelligent control and decision module. The intelligent control and decision module fuses environment illumination and unmanned aerial vehicle flight data, and outputs optimal illumination parameters based on a deep reinforcement learning algorithm; and the illumination driving and regulating module accurately controls the brightness and color temperature of the LED light source array of the illumination module and the beam angle of the optical lens group. The environment illumination, the flight state and the task requirement are sensed in real time, and the output brightness, the color temperature and the beam angle of the LED light source array are intelligently adjusted based on the deep reinforcement learning algorithm, so that energy waste caused by fixed-intensity illumination is avoided.

The invention provides an urban lighting intelligent management and comprehensive evaluation method and system, and relates to the technical field of urban intelligent lighting and energy-saving control, and the method comprises the steps: collecting a basic lighting parameter set of a road of an urban lighting system, and calculating basic lighting calculation data; collecting calibration parameters of the lighting system after the lighting loop enters a stable working state; acquiring an illumination data set and an electric power parameter set of the illumination loop and outputting a real-time illumination data set; calculating an urban comprehensive lighting rate, an urban weighted average illumination value, a theoretical illumination power density coefficient, an actual illumination output coefficient and an illumination system comprehensive energy efficiency ratio, taking the urban comprehensive lighting rate as an urban lighting rate statistical result, and taking other calculation results as a multi-dimensional energy efficiency index system; and establishing a lighting rate-energy efficiency index correlation model, identifying abnormal and low-efficiency lighting scenes, and generating personalized urban lighting optimization suggestions, thereby realizing double accurate control of the lighting state and lighting energy efficiency of the urban lighting system.

The invention is suitable for the field of intelligent illumination control and energy-saving management, and provides an illumination state monitoring management method and system for energy-saving operation of a subway station, and the method comprises the steps: continuously collecting the electrical characteristics, optical performance parameters, equipment basic attributes and historical operation records of illumination nodes, and carrying out the fusion to form analysis basic data; identifying potential fault risk nodes based on the data; simulating a fault influence by using a digital twin model and comparing the fault influence with a safety standard; and starting preventive optical compensation or compensation-combined graded early warning according to a comparison result. The system correspondingly comprises a parameter acquisition module, a risk analysis module, an influence analysis module and an optical compensation and early warning module. According to the invention, fault advanced pre-judgment, accurate compensation and efficient operation and maintenance are realized, the energy-saving and safe operation requirements are balanced, and the intelligent management level of the illumination system is improved.

The arrangement comprises a projection system (22) for microlithography and a wall element (28) for thermally shielding the projection system (22) from an illumination system (10). The projection system (22) has an object field that can be illuminated by the illumination system (10) and optical elements (M1-M6) for imaging the object field onto an image plane (21). The wall element (28) also includes a passive shielding surface element (30) arranged in a transition region between a last beam section (41) of the illumination system (10) and a first beam section (42) of the projection system (22). According to the invention, the arrangement further comprises an active cooling element (31) positioned in the transition region, with a cooling surface (32) that extends at least partially along a surface area of ​​the passive shielding surface element (30).The active cooling element positioned in the transition area can significantly reduce the rate of change of the heat flow from the lighting system to the projection system.

The utility model provides a track system and a lighting system. The track system comprises at least two track sections, and each track section comprises a track shell and a first limiting part arranged on the track shell; the at least one mechanical connector comprises a first connecting piece and two second connecting pieces arranged corresponding to the at least two track sections, and each second connecting piece is rotationally connected to the first connecting piece and is provided with a second limiting part; wherein the first connecting piece is connected with the two rail shells in a clamped mode, and the second connecting piece is provided with a first rotating position and a second rotating position; at the first rotating position, the projections of the first limiting parts and the second limiting parts corresponding to the first limiting parts in the splicing direction of the two track sections are not overlapped; and in the second rotating position, the projections of the first limiting parts and the second limiting parts corresponding to the first limiting parts in the splicing direction of the two track sections are at least partially overlapped. According to the utility model, the first limiting part and the second limiting part are clamped and separated, so that the connection and the disassembly of the two track sections are easily realized.

The utility model relates to the technical field of lighting control, in particular to a lighting system, which comprises a power supply unit, a lighting device and a controller, and is characterized in that the power supply unit comprises a control unit, a constant current control circuit and a constant voltage control circuit; the control unit comprises a first input end, a second input end, a first output end and a second output end, the first output end is connected with the constant current control circuit, and the second output end is connected with the constant voltage control circuit; the lighting device comprises a positive pole connecting line, a negative pole connecting line and n lamps, and each lamp is connected between the positive pole connecting line and the negative pole connecting line in parallel. According to the utility model, the current and voltage dual control is combined, so that the lighting system can be protected when the number of lamps changes or even suddenly fails, the lamps can be maintained to continuously illuminate, the safe and stable operation of the circuit is facilitated, and a more reliable lighting environment is provided for a user.

The invention discloses an intelligent building illumination adjustment method and system based on people flow perception and a medium, and relates to the technical field of illumination adjustment, and the method comprises the steps: collecting image time sequence data of a first region, and extracting static and mobile people flow information; based on the two types of information, working interaction of static and mobile personnel is judged, and a first mobile people stream with interaction and a second mobile people stream without interaction are classified; in combination with static people flow and two types of mobile people flow information, generating first block illumination constraint information based on a personnel activity type and a ground walking demand; the first area lighting adjustment is performed with the constraint information. The technical problems that an existing building lighting system cannot achieve refined regional lighting control according to dynamic behavior characteristics of people, consequently, lighting resources are wasted, and user experience is insufficient are solved, dynamic self-adaptive partitioned lighting adjustment is achieved through multi-dimensional perception of people flow, behavior types and interaction requirements, and the user experience is improved. And the utilization rate of lighting resources and the use comfort of personnel are improved.

The invention discloses an industrial lighting method based on an HPLC broadband power line carrier, and the method comprises the following steps: S1, obtaining all scene information of a factory production line, the scene information comprising lighting demands corresponding to different processes and different time periods of the production line; s2, formulating an illumination strategy according to a corresponding illumination demand, and storing the illumination strategy in the control platform; s3, acquiring data information in the scene through an acquisition module, transmitting the data information to a control platform through an HPLC (High Performance Liquid Chromatography) broadband power line carrier communication module, analyzing the data information through the control platform, calling a proper lighting strategy, sending a corresponding instruction through the PLC broadband power line carrier communication module, and lighting the current scene; in conclusion, the defects in the prior art are overcome, remote control, debugging and maintenance of the lighting equipment can be achieved through the HPLC broadband power line carrier technology, the flexibility and response speed of the lighting system are greatly improved, and the high social use value and application prospects are achieved.

A lighting system comprising at least one bulb assembly, an integrated switching power supply, a plurality of electrical wires electrically connecting the bulb assembly to the power supply, and male / female connectors. The bulb assembly has a housing including a light source disposed on a surface of a printed circuit board (PCB), at least one processor provided on the PCB, at least one electrical connector disposed on another surface of the PCB and configured to connect to the plurality of wires, and a means for sealing the housing against water ingress.

The application discloses a ship binding bridge lighting system, which comprises lighting lamps, power supply cables, a junction box and lamp fixing devices, the lighting lamps comprise normal lighting lamps and emergency lighting lamps, the power supply cables comprise normal lighting power supply cables, emergency lighting power supply cables and lighting bus cables, and the lamp fixing devices comprise lamp bases and wiring rows; the normal lighting power supply cables and the emergency lighting power supply cables are connected with the junction box respectively, and the junction box is connected with the lighting bus cables; the application also relates to a ship binding bridge lighting system using method. The application adopts the form of four-core lighting bus cables, installs the normal lighting lamps and the emergency lighting lamps on the lamp bases of the lighting bus cable paths, and arranges the normal lighting lamps and the emergency lighting lamps on the same paths, so that the cost of the cables is reduced.

The invention relates to a collaborative operation and maintenance method and device for port equipment, and relates to the technical field of computer technology, and the method comprises the steps: carrying out the evaluation of the operation risk of the illumination equipment in a future time period through comprehensively obtaining the operation parameters of the illumination equipment, the environment information of a storage yard area, and the division related data of an operation area, and obtaining the operation risk of the illumination equipment; and on this basis, the maintenance emergency degree of each lighting device is comprehensively judged in combination with associated abnormal conditions possibly existing between the devices and the operation arrangement of the areas where the devices are located, so that device maintenance tasks with response priority differentiation are formed and orderly distributed. By adopting the method, the matching degree between the maintenance response and the actual operation arrangement can be improved, the influence of the lighting fault on the storage yard operation can be reduced, and the overall reliability and the operation and maintenance efficiency of the port lighting system in a complex operation environment can be improved.

The invention relates to an optical element, in particular a lens (1) or a mirror, preferably for a semiconductor technology system, in particular for a lighting system or for a projection lens of a projection exposure system, comprising: a substrate (2), and a coating (3) which is applied to a surface (2a) of the substrate (2). The coating (3) has at least one refractive layer (4) with a location-dependent varying thickness (d(x,y)), wherein a minimum thickness (dMin) of the refractive layer (4) is at least 5 ΔB, preferably at least 10 ΔB, particularly preferably at least 15 ΔB, and wherein a difference (dMax- dMin) between a maximum thickness (dMax) and the minimum thickness (dMin) of the refractive layer (4) is greater than ΔB, preferably greater than 2 ΔB, particularly greater than 3 ΔB, where ΔB denotes the useful wavelength of the optical element (1).The invention also relates to an optical system, preferably a semiconductor technology system, comprising: a beam source for providing useful radiation at a useful wavelength (<B), preferably in the DUV wavelength range, in particular at 468 nm, 365 nm, 248 nm, 193 nm or 157 nm, and at least one optical element (1) designed as described above.