5360 results about "Optical power" patented technology

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. According to the optical lens, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of being good in imaging quality.

The invention discloses an optical cable fault diagnosis system and method based on a vibration filtering algorithm, relates to the technical field of optical cable fault diagnosis, and solves the problems of low efficiency, long response time and the like in the prior art and the technical problem that the health condition of an optical cable is difficult to comprehensively assess through single optical power data. The quality data of the optical cable are acquired; training an artificial intelligence model based on the historical vibration signal data to obtain an optical cable fault identification model; recognizing the vibration data based on an optical cable fault recognition model to obtain a recognition result; calculating an optical cable aging evaluation coefficient based on the vibration signal data and the optical power loss data; constructing an optical cable aging evaluation coefficient correction model based on the environment data to correct the optical cable aging evaluation coefficient obtained through calculation, and obtaining a target optical cable aging evaluation coefficient; and judging whether to carry out fault early warning based on the identification result and the target optical cable aging evaluation coefficient. The technical problem is solved.

The embodiment of the invention provides a new energy optical power correction method and system based on weather abrupt change prediction. The method comprises the following steps: identifying a cloud layer type contained in a target area, and obtaining a cloud layer type coverage rate; if the cumulonimbus coverage rate exceeds a first threshold value, predicting a cloud layer movement path in combination with the cloud layer movement vector field to obtain a first cloud layer coverage change sequence; if the layer cloud coverage rate exceeds a second threshold value, an irradiance attenuation coefficient is predicted based on the cloud layer thickness in the meteorological data and the solar altitude angle, and a second cloud layer coverage change sequence is obtained in combination with the ground aerosol optical thickness and the corrected irradiance attenuation coefficient; and monitoring real-time operation data of the power station, combining the first / second cloud layer coverage change sequence, predicting a matching relationship between a cloud layer moving direction and a power station power reduction area by adopting a double-flow Transform architecture, calculating a power fluctuation range corresponding to each power station power reduction area, dynamically adjusting power grid operation parameters of a target area, and determining the power grid operation parameters of the target area. The power grid stability is ensured.

The invention provides an optical lens, which comprises seven lenses from an object side to an imaging surface along an optical axis: a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with negative focal power, the object side surface of the second lens near the optical axis is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface near the optical axis; the object side surface of the fourth lens is a convex surface near the optical axis, and the image side surface of the fourth lens is a concave surface near the optical axis; the object side surface of the fifth lens is a concave surface near the optical axis, and the image side surface of the fifth lens is a concave surface near the optical axis; the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface near the optical axis, and the image side surface of the sixth lens is a concave surface near the optical axis; and the object side surface of the seventh lens is a convex surface near the optical axis, and the image side surface of the seventh lens is a concave surface near the optical axis. The optical lens provided by the invention has one or more advantages of short total length, large aperture, small distortion and the like.

The invention provides an optical lens, which comprises nine lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power; the seventh lens has positive focal power; the eighth lens has negative focal power; and the ninth lens has positive focal power. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of short focus, miniaturization, large field angle, large aperture, large target surface, low distortion and low sensitivity.

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; the object side surface of the seventh lens is a concave surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. The optical lens provided by the invention has the advantage of excellent imaging quality through specific surface shape arrangement and reasonable focal power distribution.

The invention provides an optical lens, which comprises eight lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface; the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of excellent imaging quality.

The invention provides an optical lens, which comprises eight lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power, and the object side surface of the seventh lens is a convex surface; and the image side surface of the eighth lens is a convex surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of excellent imaging quality.

Method, for example implemented by computer means, for characterizing at least part of a lens element adapted for a wearer and comprising a plurality of optical elements, each optical element of the plurality of optical elements providing at least an optical power, for example so as to at least one of slow down, retard or prevent a progress of the abnormal refraction of the eye of the wearer; wherein the method comprises: —obtaining a two-dimension representation of the local optical power of at least part of the lens element using a deflectometry method, for example a fringe deflectometry method, —determining the optical power distribution over at least part of the two-dimension representation of the lens element, and—characterizing at least the part of the lens element within said at least part of the two-dimension representation of the lens element by analyzing the determined optical power distribution.

The invention provides an optical lens, which comprises eight lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the image side surface of the sixth lens is a concave surface; the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; and the object side surface of the eighth lens is a concave surface. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of excellent imaging quality.

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises a first lens with focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a sixth lens with negative focal power and a seventh lens with positive focal power from a first side to a second side along an optical axis. The number of the lenses with focal power in the optical lens is seven; the optical lens meets the following conditions:-2 < = F3 / F < =-0.5, 0.25 < = R6 / R7 < = 1.5 and-20 < = F1 / F < = 20, F3 is the effective focal length of the third lens, F is the effective focal length of the optical lens, R6 is the curvature radius of the second side surface of the third lens, R7 is the curvature radius of the first side surface of the fourth lens, and F1 is the effective focal length of the first lens.

The present technology relates to systems and methods for objectively assessing accommodation of adjustable intraocular lenses ("AIOLs"). In some embodiments, a method of objectively assessing accommodation of an AIOL implanted within an eye of a patient includes receiving, via an accommodation assessment system, (a) first optical coherence tomography (OCT) geometric data associated with the AIOL when the eye is in a first accommodative state, and (b) second OCT geometric data associated with the AIOL when the eye is in a second accommodative state. The method next includes determining, based in part on a comparison of the OCT data, a first change to a thickness of an adjustable lens of the AIOL and / or a second change to a curvature of an optical surface of the AIOL. The method then includes determining, based in part on the first change and / or second change, a third change to an optical power of the AIOL.

An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with fold(s) extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between the inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes. A third lens component coupled to the first or second component provides additional optical power.

An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with fold(s) extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between the inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes. A third lens component coupled to the first or second component provides additional optical power.

An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid reservoir. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. The fluid reservoir comprises a bellows region with fold(s) extending circumferentially around an optical axis of the eye. The bellows engages the lens capsule, and a compliant fold region between inner and outer bellows portions allows the profile of the AIOL to deflect when the eye accommodates for near vision. Fluid transfers between the inner fluid chamber and the outer fluid reservoir to provide optical power changes. A third lens component coupled to the first or second component provides additional optical power.

The invention discloses an industrial lens, and belongs to the field of optical lenses. An industrial lens comprises a first lens group and a second lens group which are coaxially arranged, a diaphragm is arranged between the first lens group and the second lens group, the first lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object space to an image space, the first lens and the second lens have positive focal power, and the third lens has negative focal power; the second lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from the object space to the image space, the fourth lens and the seventh lens have negative focal power, and the fifth lens and the sixth lens have positive focal power; the industrial lens satisfies the following relational expression: IH / FNO is greater than or equal to 3.12; fu1 / f is less than or equal to 2.1; fu2 / f is greater than or equal to 0.65; fOV / (D * TTL) > = 0.03; wherein IH is the maximum image plane height of the industrial lens, FNO is the aperture value of the industrial lens, fu1 is the effective focal length of a first lens group in the industrial lens, fu2 is the effective focal length of a second lens group in the industrial lens, f is the effective focal length of the whole industrial lens, FOV is the maximum field angle of the industrial lens, D is the head aperture size of the industrial lens, and TTL is the total optical length of the industrial lens. The industrial lens provided by the invention has the advantages of wide visual field, high resolution and compact size, and is of great significance in promoting the technical progress in the field of industrial automation.

The invention relates to the technical field of power distribution network communication, in particular to a power distribution network communication method and system based on a remote access network, and the method comprises the steps: recognizing an attenuation fault point caused by the bending stress of an optical fiber; performing optical fiber signal transmission quality evaluation through the attenuation fault point to obtain a signal transmission quality index; simulating the non-uniform distribution of the refractive index of the optical fiber by using a variational finite element method to obtain an inter-mode energy coupling change rule; performing dynamic power pre-compensation on the optical fiber link quality based on the inter-mode energy coupling change rule and the signal transmission quality index to obtain an optical power compensation amount; and connecting a master station in the distribution automation system with a measurement and control terminal of a remote access network through a communication link, and performing compensation control on the communication link according to the optical power compensation amount. By introducing the dynamic power pre-compensation technology, the change of the link state can be quickly responded, and the continuity and stability of the communication link between the main station in the distribution automation system and the measurement and control terminal of the remote access network are ensured.

The invention relates to the technical field of optical power prediction, and discloses a photovoltaic power generation power short-term prediction method and device, equipment and a medium, and the method comprises the steps: obtaining photovoltaic power data and irradiance data of a day before a target prediction day; inputting the photovoltaic power data into the first model and the second model; obtaining a first prediction sequence and a second prediction sequence of the photovoltaic power; inputting the irradiance data into a day-ahead weather state pre-judgment model to obtain a weather state pre-judgment result of the target prediction day; and based on the weather state pre-judgment result, selecting a target fusion mode, and fusing the first prediction sequence and the second prediction sequence to obtain a photovoltaic power generation power short-term prediction result. According to the technical scheme provided by one or more embodiments of the invention, the LSTM-RNN model and the time correlation model are introduced, and day-ahead weather state pre-judgment is combined, so that the effect of improving the accuracy of photovoltaic power prediction is achieved.

The invention provides an optical lens and electronic equipment with the same, and the optical lens comprises a first lens which has negative focal power, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface; the second lens has negative focal power, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface; the third lens has positive focal power; the fourth lens has positive focal power; the fifth lens has positive focal power, and the first side surface and the second side surface of the fifth lens are convex surfaces; a sixth lens, wherein the sixth lens has negative focal power; a seventh lens, wherein the seventh lens has positive focal power; and the eighth lens has focal power, the first side surface of the eighth lens is a convex surface, and the second side surface of the eighth lens is a concave surface. According to the invention, at least one of the problems of difficulty in miniaturization, small field angle, poor imaging quality in a dark environment, poor temperature performance, serious aberration and poor light transmission capability of an optical lens in the prior art is solved.

The utility model discloses an optical lens. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object side to an image side along an optical axis, the first lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface is a concave surface; the third lens has negative focal power, and the object side surface of the third lens is a concave surface; the fourth lens has positive focal power, the object side surface of the fourth lens is a convex surface, and the image side surface is a convex surface; the object side surface of the fifth lens is a convex surface; the image side surface of the sixth lens is a convex surface; the seventh lens has negative focal power, and the object side surface of the seventh lens is a concave surface; the eighth lens has positive focal power, the object side surface of the eighth lens is a convex surface, and the image side surface is a convex surface; wherein the combined effective focal length Fa of the first to fourth lenses and the total effective focal length F of the optical lens meet the condition that Fa / F is greater than or equal to-4.1 and less than or equal to-2.2.

The invention provides an optical imaging lens. The optical imaging lens comprises a lens barrel, a lens group and a spacing assembly, wherein the lens group and the spacing assembly are accommodated in the lens barrel; the lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power and a fifth lens with negative focal power which are sequentially arranged from the object side to the image side along the optical axis. The sixth lens has positive focal power; the seventh lens has negative focal power; the spacing assembly comprises a second spacing element which is arranged between the second lens and the third lens and is in contact with the image side surface of the second lens, and a third spacing element which is arranged on the image side of the third lens and is in contact with the image side surface of the third lens; the optical imaging lens satisfies the following conditions: 7.69 mm < = f * tan (HFOV) < = 9.27 mm, and 33.65 < EP23 / T23 < 59.35.

The invention discloses an optical cable topology visualization monitoring analysis system and method, and relates to the technical field of optical cable monitoring. According to the optical cable topology visual monitoring analysis system and method, the complex dependency relationship between optical cable network equipment is accurately captured by using the graph neural network, and the wavelength division multiplexing, OTDR test and optical power measurement technologies are fused, so that online monitoring without interrupting service communication is realized, the real-time performance and efficiency of monitoring are improved, the positioning precision of optical cable broken fibers can be improved, and the optical cable topology visual monitoring analysis system and method are suitable for popularization and application. Through new and old OTDR curve comparison and big data analysis, optical fiber aging and degradation trends are pre-judged in advance, accurate active operation and maintenance are realized, the probability of optical cable fault occurrence is reduced, the reliability and stability of a network are improved, and by cooperating with visual display of a complex power grid optical cable map, the method has the advantages of high accuracy and high reliability. The topological structure and the geographic position of the optical cable are visually displayed by fusing multiple levels, clear visual information is provided for operation and maintenance personnel, and management and decision making are facilitated.

The invention discloses an optical fiber aligning method and equipment, and belongs to the technical field of optical fiber maintenance, the optical fiber aligning method comprises the following steps: carrying out macro bending on the light emitting end of an optical fiber, then detecting the optical power change of tail fibers of numerous optical fibers, and if the optical power change of the tail fiber of a certain optical fiber accords with a set incidence relation between a macro bending angle and optical attenuation, determining that the optical fiber aligning is finished. If the optical fiber is subjected to macro bending, the tail fiber of the optical fiber corresponds to the optical fiber subjected to macro bending at the light emitting end, so that an optical fiber pairing link is constructed according to the port information and the tail fiber information corresponding to the optical fiber, the fiber pairing operation of the optical fiber is completed, the fiber pairing operation of all the optical fibers can be completed by repeating the operation, the position of the target tail fiber does not need to be manually found, and the efficiency is improved. The fiber alignment operation can be completed only by detecting the optical power change of the tail fibers under the condition that the number of the tail fibers is large and the relation is disordered, the fiber alignment efficiency is greatly improved, service communication does not need to be interrupted, and the use experience of a user is ensured.

The zoom lens comprises a focusing lens group, a zoom lens group and a fixed lens group which are sequentially arranged from an object plane to an image plane along an optical axis, the focusing lens group has negative focal power, the zoom lens group has positive focal power, and the fixed lens group has positive focal power. The focusing lens group comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object plane to an image plane; the zoom lens group comprises a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from the object plane to the image plane; the fixed lens group includes a tenth lens. According to the zoom lens provided by the embodiment of the invention, a three-component structure is adopted, ten lenses are used, the number of the lenses in the three lens groups is set, and the focal power matching of the three lens groups and the ten lenses is further limited, so that the high-image-quality zoom lens which is small in size, large in aperture, infrared and confocal at high and low temperatures is realized, and the zoom lens can be matched with a 1 / 1.8 ''chip for use.

The invention provides a projection lens, which comprises seven lenses from a projection surface to an image source surface along an optical axis: a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power and a fifth lens with negative focal power, the second lens has positive focal power; the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the projection side of the fifth lens is a concave surface, and the surface of the image source side of the fifth lens is a concave surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; the surface of the projection side of the seventh lens is a convex surface, and the curvature radius R7 of the surface of the projection side of the fourth lens and the curvature radius R8 of the surface of the image source side of the fourth lens meet the formula:-0.5 lt; (R7-R8) / (R7 + R8) lt; and-0.1. According to the projection lens provided by the invention, the projection quality of the projection lens is improved through the reasonable configuration of the surface types of the lenses and the reasonable matching of the focal power.

The invention provides an optical lens. The optical lens comprises a lens barrel, and a lens group and a spacing assembly which are accommodated in the lens barrel; the lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a sixth lens with negative focal power and a seventh lens with negative focal power which are sequentially arranged from the object side to the image side along the optical axis; the center thickness of the second lens is larger than the center thickness of other lenses in the lens group, and the maximum thickness of a non-light-transmitting area of the second lens is larger than the maximum thickness of non-light-transmitting areas of other lenses. The spacing assembly comprises a second spacing element, a third spacing element, a fourth spacing element and a fifth spacing element; the optical lens satisfies the following conditions: 1.60 < L / (f * tan (Semi-FOV)) < 1.95; (CT2 + CT4) / CT3 is more than 5.55 and less than 7.50; 5.90 < = D5s / d2slt; 7.00 and 6.70 < EP02 / EP23 < 8.65.

The invention discloses a VGA (Video Graphics Array)-based 5G miniature optical transceiver module self-calibration method, which belongs to the technical field of optical transceiver module self-calibration, and comprises the following steps: S1, establishing a self-calibrated benchmark reference value through an initialization module and collecting environment parameters and benchmark optical parameters; s2, dynamically collecting and receiving optical power and environment change data, and judging whether deviation exceeds a threshold value or not to trigger model retraining by collecting actual operation data of environment parameters and driving parameters and combining a neural network model prediction target value; integration of a new data set and re-fitting of a non-linear relation enable the model to continuously adapt to the influence of long-term factors; key parameters such as a gain coefficient or a temperature compensation curve of a proportional-integral-differential control algorithm are dynamically corrected, long-term precision and reliability of a self-calibration system are guaranteed, and the problem of calibration failure caused by failure of a static model is avoided.

The embodiment of the invention discloses a microscope objective optical system, a microscope objective and a wafer detection microscope, and relates to the field of optics. The system is sequentially provided with a first lens group, a second lens group and a third lens group along the same optical axis from an image space to an object space; wherein the third lens group has positive focal power and is used for collecting light beams; the second lens group has negative focal power, the first lens group has positive focal power, the second lens group and the third lens group are used for correcting and compensating the optical system, and the second lens group comprises at least two lenses made of materials with different dispersion coefficients. The second lens group and the third lens group with correction and compensation functions are arranged, so that the optical system can meet the microscopic requirement of an ultra-wide working spectrum range, and the imaging quality is ensured.

Some implementations described herein provide techniques and apparatuses provide a semiconductor device including a photonics device having a backside transmissive region and methods of manufacturing. The semiconductor device includes a first semiconductor device stacked over a second semiconductor device, where the first semiconductor device includes a photodiode structure and the second semiconductor device includes the backside transmissive region. The backside transmissive region, which is below the photodiode structure of the first semiconductor device, includes a trench structure having highly reflective structures and / or properties to maintain an optical power of light waves propagating through the backside transmissive region. An absence of structures within the trench structure lessens a likelihood of interferences which may cause a transmission loss (e.g., a reflection loss, an absorption loss, a scattering loss, and / or a mode mismatch loss) relative to another transmissive region that is adjacent to the photodiode structure.

The invention provides an optical lens, a lens module and electronic equipment, the optical lens comprises a first lens group, a first prism, a second lens group and a second prism which are sequentially arranged from an object side to an image side, and the first lens group has positive focal power and is used for receiving light rays and converging the light rays; the first prism comprises a first incident plane, a first reflecting plane and a first emergent plane, a first included angle between the first incident plane and the first reflecting plane is smaller than 45 degrees, and the optical axis of the first emergent plane coincides with the optical axis of the second lens group; the second lens group has negative focal power; the second prism comprises a second incident plane, a second reflecting plane and a second emergent plane, a second included angle between the second reflecting plane and the second emergent plane is smaller than 45 degrees, the first included angle is equal to the second included angle, and the optical axis of the second incident plane coincides with the optical axis of the second lens group. According to the optical lens, the second lens group is arranged between the first prism and the second prism, so that the optical lens has relatively high focusing capability and macro effect and relatively high imaging quality.