CN117388999B - Zoom lens and optical detection system - Google Patents
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Abstract
The invention discloses a zoom lens and an optical detection system, which relate to the field of optical elements and systems and comprise an optical element, a zoom ring, a focusing ring, a laser beam light source, an optical stabilizer and a protective shell, wherein the output end of the optical element is connected with the input end of the zoom ring, the output end of the zoom ring is connected with the input end of the focusing ring, the focusing ring is in bidirectional connection with the laser beam light source, the output end of the optical stabilizer is connected with the input end of the zoom ring, and the protective shell works independently.
Description
Technical Field
The present invention relates to the field of optical elements and systems, and more particularly to a zoom lens and an optical detection system.
Background
In the development of modern technology, optical elements, systems or instruments have a wide range of applications in various fields. Among them, the zoom lens and the optical detection system are one of important research directions. With advances in technology and increasing demands for high quality images, zoom lenses are becoming increasingly popular. The traditional fixed focal length lens can only shoot images with fixed focal length, and the zoom lens can freely adjust the focal length, so that two different visual angles of long-distance shooting or wide-angle shooting are realized. Therefore, the zoom lens and the optical detection system have wide application prospects.
However, in the zoom lens of the prior art, because the zoom lens needs to use a plurality of lenses to control parameters such as focal length, aperture, depth of field, and the like, the whole lens assembly is generally heavy and has a large size. For the case of carrying or shooting for a long time, such a lens greatly increases the burden of the user, which is disadvantageous for improving the shooting experience. In addition, the zoom lens in the prior art is not ideal for shooting scenes and conditions of weak light or rapid movement. In practical use, the focal length range of the zoom lens still has some limitations due to the influence of light, environment, photographed object and other factors, and cannot adapt to various photographing environments. The focal length of a lens used by the traditional optical detection system is usually fixed, and the zooming function cannot be realized; the traditional optical detection system has low imaging quality and poor stability.
Therefore, the invention discloses a zoom lens which can realize high-quality imaging effect under different application scenes.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a zoom lens and an optical detection system, which can realize high-quality imaging effect under different application scenes; the deformation reflector and the lens group are adopted, so that self-adaptive focusing can be realized, imaging distortion is reduced, and the adaptability of shooting environment is improved; the lens group adopts optical glass and surface coating to optimize chromatic aberration, chromatic dispersion and energy loss degree of light so as to improve imaging definition and contrast; the zoom ring adopts a liquid crystal zoom device to realize optical focal length adjustment, aperture control and depth of field adjustment, and can realize manual and automatic working modes; the focusing ring adopts a liquid crystal deformable mirror to realize adjustment of focusing distance, and senses the distance between ambient light and a shooting object in real time through an automatic focusing sensing point, so that the accuracy and the efficiency of focusing adjustment are improved; the laser light source assists in automatic focusing and measurement, and performs zooming and focusing adjustment according to detection data, so that imaging definition and contrast in a complex environment are improved; the optical stabilizer adopts the static phase array image stabilizer to realize stable control of the shot picture, and can eliminate the blurring and shaking phenomena caused by handheld shooting; the protective shell is made of carbon fiber materials, is light, firm and durable, adopts a COM dynamic simulation method to perform optical simulation and optimization, can effectively improve imaging quality, has strong adaptability, and is convenient to carry; and the automation degree and the intelligent degree are high.
The invention adopts the following technical scheme:
a zoom lens, the zoom lens comprising: the optical element is used for controlling light to refract and focus, the optical element comprises a deformed reflector and a lens group, the deformed reflector changes the surface curvature through a light focusing self-adaptive model, the lens group adopts optical glass and surface coating to optimize the chromatic aberration, chromatic dispersion and energy loss degree of the light, and the lens group comprises a front group lens and a rear group lens;
the zoom ring is used for adjusting the focal length of the lens, changing the size and definition of an imaging object, adopting a liquid crystal zoom device to realize optical focal length adjustment, aperture control and depth of field adjustment, and adjusting the focal length of the lens by changing electric field intensity, and comprises a manual working mode and an automatic working mode, wherein the manual working mode realizes the adjustment of the focal length of the lens by manually rotating the zoom ring by a user, and the automatic working mode automatically optimizes the electrode layout and working parameters of the liquid crystal zoom device by a light zooming simulation optimization model;
the focusing ring is used for adjusting the focusing distance of the lens, the focusing ring adjusts the focusing distance by adopting a liquid crystal deformable mirror, the liquid crystal deformable mirror senses the ambient light and the distance of a shooting object in real time through an automatic focusing sensing point, and the focusing distance is calculated through a deep learning transfer matrix model;
The laser beam light source is used for assisting in automatic focusing and measurement, detects the distance and depth of a shooting object by emitting an infrared laser beam, and performs zooming and focusing adjustment according to detection data;
the optical stabilizer is used for counteracting vibration and jitter existing in the shooting process of the lens, and the optical stabilizer adopts the static phased array image stabilizer to realize stable control of a shooting picture;
the protection shell is used for protecting the outside of the zoom lens, and the protection shell adopts carbon fiber to lighten the quality of the zoom lens;
the output end of the optical element is connected with the input end of the zoom ring, the output end of the zoom ring is connected with the input end of the focusing ring, the focusing ring is connected with the laser beam light source in a bidirectional manner, the output end of the optical stabilizer is connected with the input end of the zoom ring, and the protective shell works independently.
As a further technical scheme of the invention, the light focusing self-adaptive model automatically adjusts the shape and curvature of the deformed reflector according to the incidence angle and position of light, the light focusing self-adaptive model comprises a light transmission module, a reflector curvature control module, a distortion correction module and an adaptive calculation module, the light transmission module tracks the propagation path and propagation behavior of the light entering the zoom lens through a light signal feedback circuit, the propagation behavior comprises refraction, reflection, diffuse reflection, scattering and dispersion, the reflector curvature control module changes the curvature of the deformed reflector through electrode control to perform light focusing, the distortion correction module adopts a polynomial function to describe the distortion characteristic of the deformed reflector and calculates correction parameters through a fitting optimization algorithm, the adaptive calculation module improves the self-adaptability and accuracy of the light focusing through iterative operation, the output end of the light transmission module is connected with the input end of the reflector curvature control module, the output end of the reflector curvature control module is connected with the input end of the distortion correction module, and the output end of the distortion correction module is connected with the adaptive calculation module.
As a further technical scheme of the invention, the liquid crystal zoom device comprises a polarizer, a compensator and a polaroid, wherein the liquid crystal zoom device forms a liquid crystal layer through the polarizer and the compensator, when an electric field acts on the liquid crystal layer, the liquid crystal layer adjusts refractive index and phase difference based on the change of the intensity of the electric field, liquid crystal molecules in the liquid crystal layer rotate to change the polarization direction of light, zooming is completed, and the polaroid controls light rays through filtering polarized light.
As a further technical scheme of the invention, the light zooming simulation optimization model establishes coupling relations of light beams at different positions according to the law of conservation of energy of light to form a constraint condition formula, the constraint condition formula obtains the optimal electrode layout and working parameters by calculating the transmission rule and imaging quality of the light beams in the liquid crystal zoom, and the constraint condition formula is expressed as:
（1）
in the case of the formula (1),and->Represents the transverse beam waist radius of the 1 st and 2 nd ray bundles at different positions,/>And->Indicating the distance that the 1 st and 2 nd ray bundles are transmitted in the liquid crystal zoom,represents the total energy of the 1 st bundle of light, +. >Representing the total energy of the 2 nd bundle of rays; the method comprises the steps of obtaining a stereoscopic interference pattern through intersection of plane waves of two light ray bundles, determining an optimal light path based on distance deviation generated in an imaging process of the stereoscopic interference pattern, wherein phase distribution of the plane waves of the two light ray bundles is expressed as follows:
（2）
in the formula (2) of the present invention,and->Representing phase values of the 1 st and 2 nd ray bundles at different positions,and->Indicating the position coordinates of the 1 st and 2 nd ray bundles,/->Indicating that the 2 nd light beam is inPhase value of position>Indicating that the 1 st ray bundle is at +.>Phase value of position>Indicating that the 1 st ray bundle is at +.>Phase value of position>Indicating that the 2 nd ray bundle is +.>A phase value of the location; translation formula of phase space of two ray bundles where phase difference occurs:
（3）
in the formula (3) of the present invention,indicating the phase difference produced by the bundle of rays at different positions,/->Indicating the phase is atModulation of position->Indicating that the bundle of light is +.>Total phase value of position +.>Representation ofTranslation of the bundle of light to->The liquid crystal zoom device adjusts the focal length and clearly images the images by adjusting the magnitude and the direction of the phase difference, and calculates the optical path difference of the light beam at different positions of the liquid crystal zoom device according to the optical path difference equation, wherein the optical path difference equation is expressed as:
（4）
In the formula (4) of the present invention,representing the optical path difference of the beam at different positions of propagation in the lc zoom,representing the bundle of light rays +_ in the liquid crystal zoom>Refractive index at location, +.>The path of the light beam in the liquid crystal zoom device is represented, the transmission rule and imaging quality of the light are determined through the optical path difference, the optimal electric field intensity is determined, and the calculation formula is as follows:
（5）
in the formula (5) of the present invention,indicating the light beam +_ in the liquid crystal zoom>Optimal electric field strength at the location, < >>Indicating the light beam +_ in the liquid crystal zoom>Voltage at location, ">Is the inter-electrode distance in the liquid crystal layer.
As a further technical scheme of the invention, the deep learning transfer matrix model comprises an input layer, a convolution layer, a full connection layer, an activation function layer, a loss function layer, a transfer matrix layer, a pooling layer, a batch normalization layer and an output layer, and the work of the deep learning transfer matrix model comprises the following steps:
step 1, acquiring data, and inputting the environmental light perceived by the sensing points and the distance data of the shooting object into the deep learning transfer matrix model through the input layer for processing;
step 2, extracting and compressing features, extracting an input local feature map from input data through the convolution layer, enhancing the expression capacity of the deep learning transfer matrix model through the activation function layer, sampling the local feature map through a pooling layer, and carrying out normalization processing through the batch normalization layer;
Step 3, outputting an estimated value of the focusing distance, fully connecting the local feature images subjected to convolution, pooling and normalization through the fully connecting layer, and outputting the estimated value of the focusing distance;
step 4, loss calculation, namely calculating the loss of the deep learning transfer matrix model through the loss function layer, wherein the loss function layer calculates a loss function of the deep learning transfer matrix model according to the error between the actual focusing distance and the estimated focusing distance;
step 5, model optimization, namely learning the similarity and the relativity between data through the transfer matrix layer, and converting input data into a transfer matrix to realize effective representation and optimization processing of the data;
and 6, outputting and focusing the result, outputting a focusing distance value through an output layer, and performing automatic focusing according to the focusing distance value.
As a further technical scheme of the invention, an optical detection system and a zoom lens are provided, wherein the optical detection system comprises a signal processing and storing module, a power module, an optical control module and an optical simulation optimizing module;
the signal preprocessing and storing module is used for processing and storing the image data acquired by the zoom lens, amplifying, filtering and digitizing the acquired image data by adopting a microprocessor DSP, and transmitting the processed image data to a cloud for storage and analysis in a wireless transmission mode;
The power supply module is used for supplying power to the optical detection system and comprises a battery power supply mode and an external connection power supply mode;
the optical control module is used for controlling the stable operation of the zoom lens and the adjustment of optical signals, and comprises an optical controller, an optical switch, an optical attenuator and an optical modulator, wherein the optical controller, the optical switch, the optical attenuator and the optical modulator work in parallel;
the optical simulation optimization module is used for performing optical simulation and optimization on the zoom lens, and the optical simulation optimization module performs optical simulation and optimization by adopting a COM dynamic simulation method;
the output end of the zoom lens is connected with the input end of the optical control module, the output end of the optical control module is connected with the input end of the optical simulation optimizing module, the output end of the zoom lens is connected with the input end of the signal processing and storing module, the output end of the power module is connected with the input end of the zoom lens, and the output end of the power module is connected with the input end of the optical control module.
As a further technical scheme of the invention, the optical controller controls the focal length and the focusing distance of the zoom lens through a built-in feedback control circuit, the optical switch controls the zoom lens to move along with a target object through changing the on-off state of an optical path, the optical attenuator controls the stable movement of the zoom lens through reducing the intensity of an optical signal, and the optical modulator controls the adjustment of the intensity, the phase and the frequency of the optical signal through changing the intensity of an electric field.
As a further technical scheme of the invention, the battery power supply mode provides a portable power supply for the optical detection system through the chargeable and dischargeable battery, the external connection power supply mode is connected to the direct current or alternating current transmission and distribution system through an external power interface to acquire power input, the power supply module realizes non-intermittent switching between the battery power supply mode and the external connection power supply mode through a standby power supply driving card, the standby power supply driving card comprises a high-speed serial expansion bus PCIe and a standby power supply processing circuit, and the high-speed serial expansion bus PCIe realizes end-to-end real-time switching of a main power supply and a standby power supply by adopting a hot plug standby switching mode and QOS anti-delay blocking service.
According to the COM dynamic simulation method, a cloud server is adopted to establish a three-dimensional model of the zoom lens, a mathematical model of the optical detection system is established according to an optical transmission and optical path tracking principle, the optical transmission and optical path tracking principle comprises an optical path tracking algorithm, a light minimum deviation principle and an angle transmission matrix method, the optical simulation optimization module adopts a monitoring computer as a simulation control unit, the simulation control unit and the cloud server are used for conveying simulation control instructions through a wireless communication bridge, and the wireless communication bridge is used for transmitting the simulation control instructions to the cloud server through an RS232 serial communication protocol to be executed.
Has the positive beneficial effects that:
the invention discloses a zoom lens and an optical detection system, which can realize high-quality imaging effect under different application scenes; the deformation reflector and the lens group are adopted, so that self-adaptive focusing can be realized, imaging distortion is reduced, and the adaptability of shooting environment is improved; the lens group adopts optical glass and surface coating to optimize chromatic aberration, chromatic dispersion and energy loss degree of light so as to improve imaging definition and contrast; the zoom ring adopts a liquid crystal zoom device to realize optical focal length adjustment, aperture control and depth of field adjustment, and can realize manual and automatic working modes; the focusing ring adopts a liquid crystal deformable mirror to realize adjustment of focusing distance, and senses the distance between ambient light and a shooting object in real time through an automatic focusing sensing point, so that the accuracy and the efficiency of focusing adjustment are improved; the laser light source assists in automatic focusing and measurement, and performs zooming and focusing adjustment according to detection data, so that imaging definition and contrast in a complex environment are improved; the optical stabilizer adopts the static phase array image stabilizer to realize stable control of the shot picture, and can eliminate the blurring and shaking phenomena caused by handheld shooting; the protective shell is made of carbon fiber materials, is light, firm and durable, adopts a COM dynamic simulation method to perform optical simulation and optimization, can effectively improve imaging quality, has strong adaptability, and is convenient to carry; and the automation degree and the intelligent degree are high.
Drawings
FIG. 1 is a schematic view of an overall module of a zoom lens according to the present invention;
FIG. 2 is a schematic diagram of a liquid crystal zoom device of a zoom lens according to the present invention;
FIG. 3 is a schematic diagram of a light focusing adaptive model in a liquid crystal zoom lens according to the present invention;
FIG. 4 is a schematic flow chart of a deep learning transfer matrix model in a liquid crystal zoom lens according to the present invention;
fig. 5 is a schematic diagram of an optical detection system according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A zoom lens, the zoom lens comprising:
the optical element is used for controlling light to refract and focus, the optical element comprises a deformation reflector and a lens group, the deformation reflector changes surface curvature through a light focusing self-adaptive model to realize self-adaptive focusing so as to reduce imaging distortion and improve adaptability of shooting environment, the lens group adopts optical glass and surface coating to optimize chromatic aberration, chromatic dispersion and energy loss degree of the light so as to improve imaging definition and contrast, and the lens group comprises a front group lens and a rear group lens;
The zoom ring is used for adjusting the focal length of the lens, changing the size and definition of an imaging object, adopting a liquid crystal zoom device to realize optical focal length adjustment, aperture control and depth of field adjustment, and adjusting the focal length of the lens by changing electric field intensity, and comprises a manual working mode and an automatic working mode, wherein the manual working mode realizes the adjustment of the focal length of the lens by manually rotating the zoom ring by a user, and the automatic working mode automatically optimizes the electrode layout and working parameters of the liquid crystal zoom device by a light zooming simulation optimization model so as to realize quick and accurate control adjustment of the focal length of the lens;
the focusing ring is used for adjusting the focusing distance of the lens to realize the definition adjustment of an imaging object, the focusing ring adopts a liquid crystal deformable mirror to adjust the focusing distance, the liquid crystal deformable mirror senses the ambient light and the distance of a shooting object in real time through an automatic focusing sensing point, and the focusing distance is calculated through a deep learning transfer matrix model so as to improve the accuracy and efficiency of the focusing distance adjustment;
the laser beam light source is used for assisting in automatic focusing and measurement, detects the distance and depth of a shooting object by emitting an infrared laser beam, and performs zooming and focusing adjustment according to detection data so as to improve the definition and contrast of imaging in a complex environment;
The optical stabilizer is used for counteracting vibration and shake of the lens during shooting so as to achieve the effect of stabilizing shooting, and the optical stabilizer adopts the static phase array image stabilizer to realize stable control of shooting pictures;
the protection shell is used for protecting the outside of the zoom lens, and the protection shell adopts carbon fiber to lighten the quality of the zoom lens;
the output end of the optical element is connected with the input end of the zoom ring, the output end of the zoom ring is connected with the input end of the focusing ring, the focusing ring is connected with the laser beam light source in a bidirectional manner, the output end of the optical stabilizer is connected with the input end of the zoom ring, and the protective shell works independently.
In a specific embodiment, the working method of the zoom lens includes the following steps:
1. manual or automatic adjustment of the zoom ring: the zoom ring is manually or automatically adjusted according to the requirements to adjust the focal length of the lens, and the size and definition of an imaging object are changed.
2. Manually or automatically adjusting the focus ring: the focusing ring is manually or automatically adjusted to realize definition adjustment of an imaging object, and the focusing distance of the liquid crystal deformable mirror is accurately adjusted.
3. Auxiliary autofocus and measurement: the laser beam source detects the distance and depth of the photographed object by emitting an infrared laser beam, and performs zoom and focus adjustment according to the detection data, so as to improve the definition and contrast of imaging in a complex environment.
4. The static phase array image stabilizer is adopted to realize stable control of the shot picture, so that vibration and shake existing in shooting of the lens are counteracted, and the effect of stable shooting is achieved.
5. The quality of the zoom lens is reduced by adopting carbon fiber, and the zoom lens is externally protected.
The steps are realized by controlling the deformable reflector and the lens group and using the liquid crystal zoom device and the liquid crystal deformable mirror, the laser beam light source, the static phase array image stabilizer and other optical technologies, and finally, the optimization and improvement of multiple aspects such as lens focal length, focusing distance, imaging definition, stable shooting, environmental adaptation and the like are achieved.
In the above embodiment, the light focusing adaptive model automatically adjusts the shape and curvature of the deformed reflector according to the incident angle and position of the light, so as to improve the focusing accuracy, the light focusing adaptive model includes a light transmission module, a reflector curvature control module, a distortion correction module and an adaptive calculation module, the light transmission module tracks the propagation path and propagation behavior of the light entering the zoom lens through the light signal feedback circuit, the propagation behavior includes refraction, reflection, diffuse reflection, scattering and dispersion, the reflector curvature control module changes the curvature of the deformed reflector through electrode control to perform light focusing, the distortion correction module adopts a polynomial function to describe the distortion characteristic of the deformed reflector, and calculates a correction parameter through a fitting optimization algorithm, the adaptive calculation module improves the self-adaptability and accuracy of the light focusing through iterative operation, the output end of the light transmission module is connected with the input end of the reflector curvature control module, the output end of the reflector curvature control module is connected with the input end of the distortion correction module, and the output end of the adaptive calculation module is connected with the input end of the adaptive calculation module.
In a specific embodiment, the optical control module is a module for controlling the operation and parameter adjustment of an optical system, which mainly comprises an optical controller, an optical switch, an optical attenuator and an optical modulator. The optical controller is used for adjusting the electronic signals of the optical system and changing the focal length and focusing distance of the zoom lens; the optical switch is used for controlling the opening and closing of the optical path to control the stable control of the optical stabilizer, so that the motion blur and vibration in the image are effectively eliminated; the optical attenuator is used for reducing the intensity of the optical signal so as to facilitate the stable control of the optical stabilizer; the optical modulator is used to modulate and condition the optical signal to achieve some specific functions of the optical system.
The optical elements work in parallel to realize the rapid and accurate control of the optical system. In practical application, the optical control module can flexibly adjust and combine functions and parameters of internal elements according to different tasks and environments so as to meet requirements and demands of different optical systems. Meanwhile, the optical control module has the characteristics of intelligence, self-adaption and high-speed response, and can realize optimal control and accurate adjustment of an optical system, so that a more stable and clear imaging effect is realized.
In the above embodiment, the liquid crystal zoom device includes a polarizer, a compensator, and a polarizing plate, where the liquid crystal zoom device forms a liquid crystal layer through the polarizer and the compensator, and when an electric field acts on the liquid crystal layer, the liquid crystal layer adjusts refractive index and phase difference based on a change of electric field intensity, and liquid crystal molecules in the liquid crystal layer rotate to change a polarization direction of light, thereby completing zooming, and the polarizing plate controls light through filtering polarized light.
In a specific embodiment, the zoom ring adopts a liquid crystal zoom to realize optical focal length adjustment, aperture control and depth of field adjustment, and the liquid crystal zoom is an optical element based on liquid crystal materials. The liquid crystal zoom is generally composed of three parts of a polarizer, a compensator, and a polarizing plate. The polarizer converts natural light entering the liquid crystal layer into linear polarized light with a specific direction; the compensator can change the phase difference of the linear polarized light incident on the compensator, so that the light rays passing through the compensator can generate different degrees of phase difference; the last polarizer is used to filter out the linear polarized light with a specific direction. In this process, when an electric field is applied to the liquid crystal layer, the refractive index thereof may be changed and the path of the light beam propagating through the liquid crystal layer may be changed. By controlling parameters such as the size and the direction of the electric field, the parameters such as image focusing, depth of field, exposure and the like can be accurately controlled.
Therefore, the liquid crystal zoom forms a programmable structure by using the polarizer and the compensator which are combined together, and can be adjusted according to the requirement, so that the precise control of the optical focal length, the aperture and the depth of field is realized.
In the above embodiment, the light zooming simulation optimization model establishes the coupling relation of the light beam at different positions according to the energy conservation law of the light, and forms a constraint condition formula, wherein the constraint condition formula obtains the optimal electrode layout and working parameters by calculating the transmission rule and imaging quality of the light beam in the liquid crystal zoom device, so as to realize rapid and accurate control of adjustment of the focal length of the lens, and the constraint condition formula is expressed as:
（1）
in the case of the formula (1),and->Represents the transverse beam waist radius of the 1 st and 2 nd ray bundles at different positions,/>And->Indicating the distance that the 1 st and 2 nd ray bundles are transmitted in the liquid crystal zoom,represents the total energy of the 1 st bundle of light, +.>Representing the total energy of the 2 nd bundle of rays; the method comprises the steps of obtaining a stereoscopic interference pattern through intersection of plane waves of two light ray bundles, determining an optimal light path based on distance deviation generated in an imaging process of the stereoscopic interference pattern, wherein phase distribution of the plane waves of the two light ray bundles is expressed as follows:
（2）
In the formula (2) of the present invention,and->Representing phase values of the 1 st and 2 nd ray bundles at different positions,and->Indicating the position coordinates of the 1 st and 2 nd ray bundles,/->Indicating that the 2 nd light beam is inPhase value of position>Indicating that the 1 st ray bundle is at +.>Phase value of position>Indicating that the 1 st ray bundle is at +.>Phase value of position>Indicating that the 2 nd ray bundle is +.>A phase value of the location; translation formula of phase space of two ray bundles where phase difference occurs:
（3）
in the formula (3) of the present invention,indicating the phase difference produced by the bundle of rays at different positions,/->Indicating the phase is atModulation of position->Indicating that the bundle of light is +.>Total phase value of position +.>Indicating translation of the bundle of light rays to +.>The liquid crystal zoom device adjusts the focal length and clearly images the images by adjusting the magnitude and the direction of the phase difference, and calculates the optical path difference of the light beam at different positions of the liquid crystal zoom device according to the optical path difference equation, wherein the optical path difference equation is expressed as:
（4）
in the formula (4) of the present invention,representing the optical path difference of the beam at different positions of propagation in the lc zoom,representing the bundle of light rays +_ in the liquid crystal zoom>Refractive index at location, +.>The path of the light beam in the liquid crystal zoom device is represented, the transmission rule and imaging quality of the light are determined through the optical path difference, the optimal electric field intensity is determined, and the calculation formula is as follows:
（5）
In the formula (5) of the present invention,indicating the light beam +_ in the liquid crystal zoom>Optimal electric field strength at the location, < >>Indicating the light beam +_ in the liquid crystal zoom>Voltage at location, ">Is the inter-electrode distance in the liquid crystal layer.
In a specific embodiment, the light zooming simulation optimization model adopts a numerical simulation method, and by tracking and simulating the propagation of light in an optical system, aberration and focusing turns under different focal lengths are calculated, and then electrode layout and working parameters are calculated by means of a mathematical model, so that the adjustment of the focal length of the lens is controlled rapidly and accurately. The light zooming simulation optimization model abstracts the optical system into a group of optical elements and light paths, and models the optical elements and the light paths, wherein the optical elements and the light paths comprise optical system parameters, optical element parameters and the like. And tracking and simulating a light transmission path by adopting a light transmission model, and calculating aberration and focusing turns under different focal lengths so as to reflect the imaging quality and accuracy under different focal lengths. Numerical optimization and simulation are carried out on different aberrations and focusing circles so as to optimize the layout and working parameters of the electrodes and realize quick and accurate control of focal length. And comparing and evaluating the optimization result with target requirements, and finally determining proper electrode layout and working parameters. Specifically, the calculation formula of the ray zoom simulation optimization model includes: aberration calculation formula, MTF calculation formula, focusing circle calculation formula, electrode design formula, etc., and specific formulas and calculation methods depend on specific models.
In a word, the light zooming simulation optimization model can enable the liquid crystal zoom to better control the adjustment of the focal length of the lens through numerical simulation and an optimization algorithm, and achieves the rapid, accurate and high-quality imaging effect. The improvement can promote the optical lens to be widely applied in various fields, and has very important significance. The working hardware environment mainly comprises the following components:
optical detection device: optical detection devices are required to acquire image data of an object, and CCD/CMOS image sensors, cameras, high-speed cameras and the like are common, wherein high-speed and high-precision optical positioning devices are also required to accurately position the object and ensure the stability of an optical detection system.
Light source device: the high-quality light source device without attenuation, ultra-high brightness and the like is adopted to provide enough light source energy for the optical detection system so as to ensure the quality and definition of image data.
Simulation optimizing system: modern optical simulation and optimization systems, such as ZEMAX, code V and other software are used for optical simulation and optimization, and the performance and accuracy of the optical detection system are improved by trying various configurations and parameter combinations to find the optimal solution.
High-speed computer: since optical simulation and optimization requires a large number of complex calculations, it is necessary to configure a high-speed, high-performance computer system to ensure rapid accuracy of simulation and optimization results.
A data storage system: optical modeling and optimization requires processing large amounts of complex data, and therefore requires the provision of high-capacity, high-speed data storage systems for storing and processing the large amounts of data generated.
The use and the equipment of the hardware equipment can be subjected to customized configuration according to specific application requirements, and the hardware environment meeting the calculation requirements of the optical simulation and optimization model is realized by combined use.
The laboratory configuration adopts an i8 series dual-core computer and adopts a 64+256GB storage mode. Setting a simulation experiment environment, setting a device voltage level of 6-35V, setting device parameter precision of 96%, calculating an algorithm calculation error of not more than 0.5%, respectively adopting a light zooming simulation optimization model (A group) and a random adjustment algorithm (B group) to carry out simulation comparison experiments, respectively adopting the two algorithms to carry out zooming adjustment control on the same target object at different distances, simulating a focusing process of a zoom lens, carrying out 5 simulation experiments on each group, respectively recording zooming adjustment completion time and definition, and recording in table 1.
Table 1 statistics of detection results
From the above table, it can be seen that the average adjustment time of group a is 2.14 seconds and the average adjustment time of group B is 4.54 seconds from the adjustment completion time, and that group a completes zoom adjustment significantly faster than group B. From the definition score, the average definition score of group a was 7.4 points, while the average definition score of group B was 5.6 points, with group a having more excellent definition performance relative to group B. Therefore, it can be concluded that the light zooming simulation optimization model (group a) shows faster adjustment time and better definition performance in the zooming process when focusing at different distances for the same object.
And (3) respectively adopting a light zooming simulation optimization model (A group) and a random adjustment algorithm (B group) to carry out simulation comparison experiments, respectively adopting the two algorithms to carry out zooming adjustment control on targets with different sizes at the same distance, simulating the focusing process of a zoom lens, carrying out 5 simulation experiments on each group, and respectively recording the zooming adjustment completion time and definition, wherein the zooming adjustment completion time and definition are recorded in Table 2.
Table 2 statistics of detection results
From the above table, it can be seen that the average adjustment time of group a is 1.86 seconds, and the average adjustment time of group B is 4 seconds, from the adjustment completion time, and that group a completes zoom adjustment significantly faster than group B. From the definition score, the average definition score of group a was 7.4 points, while the average definition score of group B was 5.2 points, with group a having more excellent definition performance relative to group B. Therefore, it can be concluded that the light zooming simulation optimization model (group a) shows faster adjustment time and better definition performance in the zooming process when zooming adjustment control is performed on objects with different sizes at the same distance.
In the above embodiment, the deep learning transfer matrix model includes an input layer, a convolution layer, a full connection layer, an activation function layer, a loss function layer, a transfer matrix layer, a pooling layer, a batch normalization layer, and an output layer, and the work of the deep learning transfer matrix model includes the following steps:
step 1, acquiring data, and inputting the environmental light perceived by the sensing points and the distance data of the shooting object into the deep learning transfer matrix model through the input layer for processing;
step 2, extracting and compressing features, extracting an input local feature map from input data through the convolution layer, enhancing the expression capacity of the deep learning transfer matrix model through the activation function layer, sampling the local feature map through a pooling layer, and carrying out normalization processing through the batch normalization layer;
step 3, outputting an estimated value of the focusing distance, fully connecting the local feature images subjected to convolution, pooling and normalization through the fully connecting layer, and outputting the estimated value of the focusing distance;
step 4, loss calculation, namely calculating the loss of the deep learning transfer matrix model through the loss function layer, wherein the loss function layer calculates a loss function of the deep learning transfer matrix model according to the error between the actual focusing distance and the estimated focusing distance;
Step 5, model optimization, namely learning the similarity and the relativity between data through the transfer matrix layer, and converting input data into a transfer matrix to realize effective representation and optimization processing of the data;
and 6, outputting and focusing the result, outputting a focusing distance value through an output layer, and performing automatic focusing according to the focusing distance value.
In a specific embodiment, the deep learning transfer matrix model is a model based on a deep learning algorithm, which is designed by an optical imaging system, and can be used for analyzing and learning the image data of a shooting object, so that the accurate calculation of the focusing distance is realized.
Specifically, the deep learning transfer matrix model is used for model training and optimization by using a Convolutional Neural Network (CNN) and other deep learning algorithms according to different shooting environments and objects by collecting a large amount of image data, so that a transfer matrix model suitable for the current shooting environment and object is constructed. The model can convert the image data of the shooting object into the information of the focusing distance through matrix transformation, so that the focusing distance can be calculated rapidly and accurately. Specifically, in the optical imaging system, the liquid crystal deformable mirror senses the ambient light and the distance of a shooting object in real time through an automatic focusing sensing point, acquires image data in real time, and accurately calculates the focusing distance through a deep learning transfer matrix model. Through the study and optimization of the model, the focal length under different distances can be accurately calculated, and the deformation degree of the liquid crystal deformable mirror can be timely adjusted, so that the accurate adjustment of the focusing distance is realized, and the imaging quality and definition of the optical imaging system are improved.
In the above embodiment, an optical detection system includes a zoom lens, the optical detection system including a signal processing and storage module, a power module, an optical control module, and an optical simulation optimization module;
the signal preprocessing and storing module is used for processing and storing the image data acquired by the zoom lens, amplifying, filtering and digitizing the acquired image data by adopting a microprocessor DSP, and transmitting the processed image data to a cloud for storage and analysis in a wireless transmission mode;
the power supply module is used for supplying power to the optical detection system and comprises a battery power supply mode and an external connection power supply mode;
the optical control module is used for controlling the stable operation of the zoom lens and the adjustment of optical signals, and comprises an optical controller, an optical switch, an optical attenuator and an optical modulator, wherein the optical controller, the optical switch, the optical attenuator and the optical modulator work in parallel;
the optical simulation optimization module is used for performing optical simulation and optimization on the zoom lens, and the optical simulation optimization module performs optical simulation and optimization by adopting a COM dynamic simulation method;
The output end of the zoom lens is connected with the input end of the optical control module, the output end of the optical control module is connected with the input end of the optical simulation optimizing module, the output end of the zoom lens is connected with the input end of the signal processing and storing module, the output end of the power module is connected with the input end of the zoom lens, and the output end of the power module is connected with the input end of the optical control module.
In a specific embodiment, a method of operating an optical detection system includes the steps of:
1. image data acquisition is started: and starting an optical detection system, starting to acquire image data through a zoom lens, and transmitting the image data to a signal preprocessing and storage module for amplification, filtering and digital processing.
2. The power supply mode is selected: and a battery power supply mode or an external connection power supply mode is selected according to the requirements to supply power to the optical detection system so as to ensure the normal operation of the system.
3. Optical control and adjustment: the optical control module is used for carrying out stable control and optical signal adjustment on the zoom lens, and optical devices such as an optical switch, an optical attenuator, an optical modulator and the like are adjusted, so that the accurate adjustment and optimization of optical signals are realized, and the definition degree and the accuracy of image data are ensured.
4. Optical simulation and optimization: and starting an optical simulation optimization module by adopting a COM dynamic simulation method, and performing optical simulation and optimization on the zoom lens so as to improve the detection precision and the recognition capability of the optical detection system on the target object.
5. Data storage and analysis: and transmitting the processed image data to the cloud, so as to realize storage and analysis of the image data and provide data support and decision reference.
6. Ending the work: and (3) completing optical detection and analysis of the target object, closing the system and maintaining the system.
The steps realize high-quality and high-efficiency optical detection and image data processing of the optical detection system on the target object through the synergistic effect of the components such as the signal preprocessing and storage module, the power supply module, the optical control module, the optical simulation optimizing module and the like, and ensure the stability and the reliability of the system.
In the above embodiment, the optical controller controls the focal length and the focusing distance of the zoom lens through a built-in feedback control circuit, the optical switch controls the zoom lens to move along with the target object by changing the on-off state of the optical path, the optical attenuator controls the stable movement of the zoom lens by reducing the intensity of the optical signal, and the optical modulator controls the adjustment of the intensity, the phase and the frequency of the optical signal by changing the intensity of the electric field.
In a specific embodiment, the optical control module is a module for controlling the operation and parameter adjustment of an optical system, which mainly comprises an optical controller, an optical switch, an optical attenuator and an optical modulator. The optical controller is used for adjusting the electronic signals of the optical system and changing the focal length and focusing distance of the zoom lens; the optical switch is used for controlling the opening and closing of the optical path to control the stable control of the optical stabilizer, so that the motion blur and vibration in the image are effectively eliminated; the optical attenuator is used for reducing the intensity of the optical signal so as to facilitate the stable control of the optical stabilizer; the optical modulator is used to modulate and condition the optical signal to achieve some specific functions of the optical system. The optical elements work in parallel to realize the rapid and accurate control of the optical system. In practical application, the optical control module can flexibly adjust and combine functions and parameters of internal elements according to different tasks and environments so as to meet requirements and demands of different optical systems. Meanwhile, the optical control module has the characteristics of intelligence, self-adaption and high-speed response, and can realize optimal control and accurate adjustment of an optical system, so that a more stable and clear imaging effect is realized.
In the above embodiment, the battery power supply mode provides a portable power supply for the optical detection system through the chargeable and dischargeable battery, the external connection power supply mode is connected to the direct current or alternating current transmission and distribution system through an external power interface to obtain power input, the power module realizes non-intermittent switching between the battery power supply mode and the external connection power supply mode through a standby power supply driving card, the standby power supply driving card comprises a high-speed serial expansion bus PCIe and a standby power supply processing circuit, and the high-speed serial expansion bus PCIe adopts a hot plug standby switching mode and QOS anti-delay blocking service to realize end-to-end real-time switching between a main power supply and a standby power supply.
In a specific embodiment, the power module adopts a chargeable and dischargeable battery to provide a portable power supply for the optical detection system, and is connected to a direct current or alternating current transmission and distribution system through an external power interface to acquire power input of the power supply so as to ensure reliability and durability of the power supply. Meanwhile, the power supply module realizes non-intermittent switching between a battery power supply mode and an external connection power supply mode through the standby power supply driving card so as to improve the stability and reliability of the optical detection system.
The standby power driver card includes a high-speed serial expansion bus PCIe and a standby power handling circuit. The high-speed serial expansion bus PCIe adopts a hot plug standby switching mode and QOS anti-delay blocking service to realize end-to-end real-time switching of the main power supply and the standby power supply so as to ensure that the normal operation of the optical detection system is not influenced in the switching process. The standby power supply processing circuit can realize real-time monitoring of the power supply module and remote control of the standby power supply, so that the standby power supply can be quickly switched to when the main power supply fails, and a user is informed to carry out necessary maintenance and replacement operations, thereby ensuring long-term stable operation and service life of the optical detection system.
In the above embodiment, the COM dynamic simulation method uses a cloud server to build a three-dimensional model of the zoom lens, and builds a mathematical model of the optical detection system according to an optical transmission and optical path tracking principle, where the optical transmission and optical path tracking principle includes an optical path tracking algorithm, a light minimum deviation principle and an angle transmission matrix method, the optical simulation optimization module uses a monitoring computer as a simulation control unit, the simulation control unit and the cloud server communicate a simulation control instruction through a wireless communication bridge, and the wireless communication bridge transmits the simulation control instruction to the cloud server through an RS232 serial communication protocol to execute.
In a specific embodiment, in the optical detection system, an optical simulation optimization module performs optical simulation and optimization on the zoom lens by adopting a COM dynamic simulation method. The COM dynamic simulation method is a calculation method based on a numerical solution, is widely applied to the design of an optical system, and can quickly and accurately obtain parameters and characteristics of imaging of the optical system through construction of a mathematical model and computer solution. Specifically, the optical simulation optimization module firstly utilizes a modeling tool in COM software to build a three-dimensional model of the zoom lens, including the geometric shape, material properties, optical parameters and the like of the optical lens. And then, establishing a mathematical model of the optical system according to the transmission theory and the optical path tracking principle of the optical system, wherein the mathematical model comprises the mathematical methods such as an optical path tracking algorithm, a light minimum deviation principle, an angle transmission matrix method and the like. And then, solving and optimizing the established mathematical model by adopting a computer numerical solution method to obtain various imaging parameters and characteristics of the optical system, such as imaging quality, resolution, distortion, aberration and the like. Through optical simulation and optimization, the imaging performance and the precision of the optical detection system can be effectively improved, so that the actual application requirements are met.
In a word, the optical simulation optimizing module is one of key parts of the optical detection system, adopts a COM dynamic simulation method to perform optical simulation and optimization, can effectively improve imaging performance and precision of the optical system, and has very important practical significance and application value.
While specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are by way of example only, and that various omissions, substitutions, and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is limited only by the following claims.
Claims (5)
1. A zoom lens, characterized in that: the zoom lens includes:
the optical element is used for controlling light to refract and focus, the optical element comprises a deformed reflector and a lens group, the deformed reflector changes the surface curvature through a light focusing self-adaptive model, the lens group adopts optical glass and surface coating to optimize the chromatic aberration, chromatic dispersion and energy loss degree of the light, and the lens group comprises a front group lens and a rear group lens;
The zoom ring is used for adjusting the focal length of the lens, changing the size and definition of an imaging object, adopting a liquid crystal zoom device to realize optical focal length adjustment, aperture control and depth of field adjustment, and adjusting the focal length of the lens by changing electric field intensity, and comprises a manual working mode and an automatic working mode, wherein the manual working mode realizes the adjustment of the focal length of the lens by manually rotating the zoom ring by a user, and the automatic working mode automatically optimizes the electrode layout and working parameters of the liquid crystal zoom device by a light zooming simulation optimization model;
the focusing ring is used for adjusting the focusing distance of the lens, the focusing distance of the liquid crystal deformable mirror is adopted for adjusting, the liquid crystal deformable mirror senses the ambient light and the distance of a shooting object in real time through an automatic focusing sensing point, and the focusing distance of a deep learning transfer matrix model is calculated;
the laser beam light source is used for assisting in automatic focusing and measurement, detects the distance and depth of a shooting object by emitting an infrared laser beam, and performs zooming and focusing adjustment according to detection data;
the optical stabilizer is used for counteracting vibration and jitter existing in the shooting process of the lens, and the optical stabilizer adopts the static phased array image stabilizer to realize stable control of a shooting picture;
The protection shell is used for protecting the outside of the zoom lens, and the protection shell adopts carbon fiber to lighten the quality of the zoom lens;
the output end of the optical element is connected with the input end of the zoom ring, the output end of the zoom ring is connected with the input end of the focusing ring, the focusing ring is connected with the laser beam light source in a bidirectional manner, the output end of the optical stabilizer is connected with the input end of the zoom ring, and the protective shell works independently; the light focusing self-adaptive model automatically adjusts the shape and curvature of the deformation reflector according to the incidence angle and position of light, the light focusing self-adaptive model comprises a light transmission module, a reflector curvature control module, a distortion correction module and an adaptive calculation module, the light transmission module tracks the propagation path and propagation behavior of the light entering the zoom lens through a light signal feedback circuit, the propagation behavior comprises refraction, reflection, diffuse reflection, scattering and dispersion, the reflector curvature control module changes the curvature of the deformation reflector through electrode control to perform light focusing, the distortion correction module adopts a polynomial function to describe the distortion characteristic of the deformation reflector and calculates correction parameters through a fitting optimization algorithm, the adaptive calculation module improves the self-adaptation and accuracy of the light focusing through iterative operation, the output end of the light transmission module is connected with the input end of the reflector curvature control module, the output end of the reflector curvature control module is connected with the input end of the distortion correction module, and the output end of the distortion correction module is connected with the input end of the adaptive calculation module; the liquid crystal zoom device comprises a polarizer, a compensator and a polaroid, wherein the liquid crystal zoom device forms a liquid crystal layer through the polarizer and the compensator, when an electric field acts on the liquid crystal layer, the liquid crystal layer adjusts refractive index and phase difference based on the change of the intensity of the electric field, liquid crystal molecules in the liquid crystal layer rotate to change the polarization direction of light so as to complete zooming, and the polaroid controls light through filtering polarized light;
The light zooming simulation optimization model establishes coupling relations of light beams at different positions according to the energy conservation law of light to form a constraint condition formula, the constraint condition formula is expressed as:
（1）
in the case of the formula (1),and->Represents the transverse beam waist radius of the 1 st and 2 nd ray bundles at different positions,/>And->Indicating the distance that the 1 st and 2 nd ray bundles are transmitted in the liquid crystal zoom,represents the total energy of the 1 st bundle of light, +.>Representing the total energy of the 2 nd bundle of rays; the method comprises the steps of obtaining a stereoscopic interference pattern through intersection of plane waves of two light ray bundles, determining an optimal light path based on distance deviation generated in an imaging process of the stereoscopic interference pattern, wherein phase distribution of the plane waves of the two light ray bundles is expressed as follows:
（2）
in the formula (2) of the present invention,and->Representing the phase values of the 1 st and 2 nd ray bundles at different positions, +.>Andindicating the position coordinates of the 1 st and 2 nd ray bundles,/->Indicating that the 2 nd ray bundle is +.>Phase value of position>Indicating that the 1 st ray bundle is at +.>Phase value of position >Indicating that the 1 st light beam is inPhase value of position>Indicating that the 2 nd ray bundle is +.>A phase value of the location; translation formula of phase space of two ray bundles where phase difference occurs:
（3）
in the formula (3) of the present invention,indicating the phase difference produced by the bundle of rays at different positions,/->Indicating that the phase is +.>Modulation of position->Indicating that the bundle of light is +.>Total phase value of position +.>Indicating translation of the bundle of light rays to +.>The liquid crystal zoom device adjusts the focal length and clearly images the images by adjusting the magnitude and the direction of the phase difference, and calculates the optical path difference of the light beam at different positions of the liquid crystal zoom device according to the optical path difference equation, wherein the optical path difference equation is expressed as:
（4）
in the formula (4) of the present invention,representing the optical path difference of the beam of light at different positions of propagation in said lc zoom, +.>Representing the bundle of light rays +_ in the liquid crystal zoom>Refractive index at location, +.>The path of the light beam in the liquid crystal zoom device is represented, the transmission rule and imaging quality of the light are determined through the optical path difference, the optimal electric field intensity is determined, and the calculation formula is as follows:
（5）
in the formula (5) of the present invention,indicating the light beam +_ in the liquid crystal zoom>The optimum electric field strength at the location, Indicating the light beam +_ in the liquid crystal zoom>Voltage at location, ">Is the inter-electrode distance in the liquid crystal layer; the deep learning transfer matrix model comprises an input layer, a convolution layer, a full connection layer, an activation function layer, a loss function layer, a transfer matrix layer, a pooling layer, a batch normalization layer and an output layer, and the work of the deep learning transfer matrix model comprises the following steps:
step 1, acquiring data, and inputting the environmental light perceived by the sensing points and the distance data of the shooting object into the deep learning transfer matrix model through the input layer for processing;
step 2, extracting and compressing features, extracting an input local feature map from input data through the convolution layer, enhancing the expression capacity of the deep learning transfer matrix model through the activation function layer, sampling the local feature map through a pooling layer, and carrying out normalization processing through the batch normalization layer;
step 3, outputting an estimated value of the focusing distance, fully connecting the local feature images subjected to convolution, pooling and normalization through the fully connecting layer, and outputting the estimated value of the focusing distance;
step 4, loss calculation, namely calculating the loss of the deep learning transfer matrix model through the loss function layer, wherein the loss function layer calculates a loss function of the deep learning transfer matrix model according to the error between the actual focusing distance and the estimated focusing distance;
Step 5, model optimization, namely learning the similarity and the relativity between data through the transfer matrix layer, and converting input data into a transfer matrix to realize effective representation and optimization processing of the data;
and 6, outputting and focusing the result, outputting a focusing distance value through an output layer, and performing automatic focusing according to the focusing distance value.
2. An optical detection system, characterized by: a zoom lens comprising the optical detection system of claim 1, the optical detection system comprising a signal processing and storage module, a power module, an optical control module, and an optical analog optimization module;
the signal preprocessing and storing module is used for processing and storing the image data acquired by the zoom lens, amplifying, filtering and digitizing the acquired image data by adopting a microprocessor DSP, and transmitting the processed image data to a cloud for storage and analysis in a wireless transmission mode;
the power supply module is used for supplying power to the optical detection system and comprises a battery power supply mode and an external connection power supply mode;
the optical control module is used for controlling the stable operation of the zoom lens and the adjustment of optical signals, and comprises an optical controller, an optical switch, an optical attenuator and an optical modulator, wherein the optical controller, the optical switch, the optical attenuator and the optical modulator work in parallel;
The optical simulation optimization module is used for performing optical simulation and optimization on the zoom lens, and the optical simulation optimization module performs optical simulation and optimization by adopting a COM dynamic simulation method;
the output end of the zoom lens is connected with the input end of the optical control module, the output end of the optical control module is connected with the input end of the optical simulation optimizing module, the output end of the zoom lens is connected with the input end of the signal processing and storing module, the output end of the power module is connected with the input end of the zoom lens, and the output end of the power module is connected with the input end of the optical control module.
3. An optical detection system according to claim 2, wherein: the optical controller controls the focal length and focusing distance of the zoom lens through a built-in feedback control circuit, the optical switch controls the zoom lens to move along with a target object through changing the on-off of an optical path, the optical attenuator controls the stable movement of the zoom lens through reducing the intensity of an optical signal, and the optical modulator controls the adjustment of the intensity, the phase and the frequency of the optical signal through changing the intensity of an electric field.
4. An optical detection system according to claim 2, wherein: the battery power supply mode provides a portable power supply for the optical detection system through the chargeable and dischargeable battery, the external power supply mode is connected to the direct current or alternating current transmission and distribution system through an external power interface to obtain power input, the power module realizes non-intermittent switching of the battery power supply mode and the external power supply mode through the standby power supply driving card, the standby power supply driving card comprises a high-speed serial expansion bus PCIe and a standby power supply processing circuit, and the high-speed serial expansion bus PCIe realizes end-to-end real-time switching of a main power supply and a standby power supply by adopting a hot plug standby switching mode and a QOS anti-delay blocking service.
5. An optical detection system according to claim 2, wherein: the COM dynamic simulation method comprises the steps that a cloud server is adopted to build a three-dimensional model of the zoom lens, a mathematical model of the optical detection system is built according to optical transmission and optical path tracking principles, the optical transmission and optical path tracking principles comprise an optical path tracking algorithm, a light minimum deviation principle and an angle transmission matrix method, the optical simulation optimization module adopts a monitoring computer as a simulation control unit, the simulation control unit and the cloud server are used for conveying simulation control instructions through a wireless communication bridge, and the wireless communication bridge is used for transmitting the simulation control instructions to the cloud server through an RS232 serial communication protocol to be executed.
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| CN107003120A (en) * | 2014-12-09 | 2017-08-01 | 巴斯夫欧洲公司 | Fluorescence detector |
| CN115437099A (en) * | 2022-09-29 | 2022-12-06 | 苏州灵猴机器人有限公司 | Automatic focusing optical system and focusing method |
| CN116626901A (en) * | 2023-05-18 | 2023-08-22 | 潍坊歌尔电子有限公司 | AR optical system, AR glasses, and zoom control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107003120A (en) * | 2014-12-09 | 2017-08-01 | 巴斯夫欧洲公司 | Fluorescence detector |
| CN115437099A (en) * | 2022-09-29 | 2022-12-06 | 苏州灵猴机器人有限公司 | Automatic focusing optical system and focusing method |
| CN116626901A (en) * | 2023-05-18 | 2023-08-22 | 潍坊歌尔电子有限公司 | AR optical system, AR glasses, and zoom control method |
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