34results about How to "With zoom function" patented technology

In a neutron moderator, a neutron irradiation method, and a hazardous substance detection apparatus, an inspection chamber (21) where an inspection target (A) can be inserted and removed is provided. Around this inspection chamber (21), a thermal neutron absorbing material (15) is provided. A neutron generator(11) is arranged facing the inspection target (A) in the inspection chamber (21), and a neutron moderating material (12) is arranged at an opposing side of the inspection target (A) with respect to the neutron generator (11). The external surface of the neutron moderating material (12) is covered with gamma ray shielding materials (13, 14), and a Ge detector (24) and a BGO detector (25) are provided to detect gamma ray emitted from the inspection target (A). With this configuration, necessary fast neutron and thermal neutron can be taken out, while suppressing generated secondary gamma ray. Accordingly, a hazardous substance can be detected accurately regardless of a constituent element thereof.

The invention relates to a periscopic camera module which comprises a first reflection element which is used for reflecting incident light to enable the incident light to be longitudinally turned, thefirst reflecting element is movably installed on a first base, the first base is provided with a first driving module, and the first driving module can drive the first reflecting element to rotate; an optical lens which is used for receiving the light reflected by the first reflecting element and outputting an imageable light beam to an image space; a second reflecting element which comprises atleast one second reflecting surface, and the at least one second reflecting surface is suitable for transversely turning the imageable light beam for at least one time; a photosensitive chip which issuitable for receiving the imageable light beam which is transversely turned by the second reflecting element. The invention further provides corresponding electronic equipment. According to the periscopic camera module, the anti-shake and zooming functions can be achieved with a small occupied space.

The invention discloses a control method and system of an intelligent table lamp capable of preventing myopia and a storage medium. The control method comprises the steps of S100, obtaining the eye fatigue degree of a user; S200, judging whether the eye fatigue degree of the user exceeds a preset eye fatigue degree or not; and S300, when the eye fatigue degree exceeds the preset eye fatigue degree, sending reminding information according to a constructed characteristic vision correction table, projecting image information capable of preventing myopia through intelligent table lamp projection equipment, and adjusting the eye muscle of the user according to the image information. The eye fatigue degree of the monitored user is obtained through the intelligent table lamp, a monitoring systemis triggered according to the eye fatigue degree, and image information is projected to relieve the eye muscle state of the user, so that the eyes of the user keep a good healthy visual state.

The invention discloses a current / voltage conversion circuit with filtering and amplification functions and belongs to a current / voltage conversion circuit. The current / voltage conversion circuit comprises a current input end 1 and a voltage output end 2 and is characterized in that a current / voltage conversion signal circuit 3, a filtering circuit 4 and an amplification circuit 5 have a connecting relationship that: the current input end 1 is connected with resistors 6' in a current detection resistor sequence 6; a switch 7' in a multiway selection switch 7 is closed and the other switches 7' are open to form a voltage signal U1; noise is removed from the U1 by the filtering circuit 4 to form a voltage signal U2; and a voltage signal U3 with an increased amplitude, namely the voltage output end 2, is obtained after the U2 passes through the voltage amplification circuit 5. The current / voltage conversion circuit has the advantages that the current / voltage conversion circuit has a stable working state and is free from oscillation; the input dynamic range is wide; a weak current signal can be detected; the response time is short; the signal to noise ratio is high; and the current / voltage conversion circuit has an amplification function and a higher practical value, and facilitates subsequent processing.

The invention relates to a laser illuminator used for underwater distance gating detection imaging, and belongs to the technical field of laser illuminators. The laser illuminator comprises a laser illumination drier, a laser device light source, a TEC semiconductor cooler and an illuminating optical system. The laser illuminator can transmit data with an underwater distance gating detection imaging device, is used for illuminating the underwater distance gating detection imaging device, and has the characteristics of compact structure, small size, long life, high stability and wide working temperature range. The laser device light source adopts a pulse solid laser device, the wavelength of the light source is 532nm with low underwater absorption efficiency, and targets 5-100m lower than the water level can be illuminated by using a Q switching technology. The illuminating optical system has a zooming function, and allows the divergence angle of the illumination laser to be continuously adjustable in a range of 15-60DEG in order to make the laser illuminator be flexible in the underwater distance gating detection imaging application. The TEC semiconductor cooler can adjust the temperature of the laser device light source to guarantee the working stability.

The invention discloses a current / voltage converting circuit with filtering and amplifying functions, belonging to a current / voltage converting circuit. The current / voltage converting circuit comprises a current input terminal 1 and a voltage output terminal 2. The circuit is characterized by comprising a current / voltage converting signal circuit 3, an active low pass filter circuit 4 and a voltage signal amplifying circuit 5. A connection relation is as follows: the current input terminal 1 is connected with resistors 6' in a current detecting resistor array 6 respectively, a path of switch 7' in a plurality of paths of switches 7 is in a turn-on state, other switches 7' are in a turn-off state and a voltage signal U1 is obtained, noise in the U1 is removed by the active low pass filter circuit 4, a voltage signal U2 is obtained, a voltage signal U3 with an increased amplitude is obtained after U2 is processed by the voltage signal amplifying circuit 5, and the U3 reaches the voltage output terminal 2. The circuit has the advantages of stable work state without oscillation, wide input dynamic range, capability of detecting a weak current signal, short response time, high signal-to-noise ratio, amplifying function, convenient subsequent processing, and high practical value.

The invention relates to the technical field of solar application devices, in particular to a variable-focus Fresnel lens focuser. The variable-focus Fresnel lens focuser comprises a Fresnel lens, a support system, an installing assembly and an adjusting system. The support system comprises an outer support and an inner support. The inner support is arranged on the inside of the outer support and can move relative to the outer support, and a sliding device is arranged on the inner support in a sliding mode. The installing assembly comprises a lens frame and an installing frame, the Fresnel lens is fixedly arranged on the lens frame, the lens frame can be arranged on the installing frame in a rotatable mode, the installing frame is arranged on the sliding device in a rotatable mode, and the rotating direction of the installing support is perpendicular to the rotating direction of the lens frame. The adjusting system comprises a rotating adjusting assembly and a displacement adjusting assembly. The lens is arranged on the support system through the installing assembly, and the adjusting system can conduct angle rotation on the lens and the installing assembly and can adjust the lens and the installing assembly vertically and horizontally. The variable-focus Fresnel lens focuser has a variable-focus function.

The present invention relates to the technical field of photocopying equipment, in particular to a product art design photocopy table with zoom function, comprising: a chute, a convex mirror frame, and pulleys; the chute is arranged at both ends of the lower part of the design platform, and The platforms are connected by welding; a convex mirror frame and a convex mirror are installed in the middle of the chute, and the chute is connected with the convex mirror frame and the convex mirror through pulleys by embedding; the two ends of the lower part of the design platform are provided with sleeves, and the design The platform and the sleeve are connected by welding; a column is installed in the middle of the lower part of the sleeve, and the sleeve and the column are connected by fitting; the present invention has the function of the device body by improving the structure and combining the existing technology Powerful and practical, the device body can be disassembled, and has the advantages of a zoom function, which solves the problems and deficiencies in the existing device technology and makes it more practical.

The invention discloses a window-mounted fresh air purifier based on an internal circulation mode. The window-mounted fresh air purifier comprises a shell. An upper sealing fixed piece is distributedat the top end in the shell, and a lower sealing fixed piece is distributed at the bottom end in the shell. Outdoor air inlets are distributed in the outer side face of the shell. Air outlet cover plates are distributed on the inner side face of the shell. Indoor air outlets are distributed in the surface of the shell. A sealing partition plate is vertically installed between the upper sealing fixed piece and the lower sealing fixed piece. Heat conduction fins are installed at the two ends of the inner side face of the sealing partition plate. An air flow guide piece is installed at the centerof the inner side face of the sealing partition plate. An internal circulation cavity is distributed in the bottom of the shell and communicated with an outer cavity through a first air duct valve. An outdoor air outlet and an indoor air inlet are distributed in the two sides of the internal circulation cavity respectively. A whole filter element is sufficiently used, the applicability of the device is greatly improved, the device and user safety are sufficiently protected, and the installation process is convenient and rapid.

The invention discloses a pair of 3D glasses with the amplification function. The pair of 3D glasses comprises a glasses frame, a battery, lenses, a button and a communication chip. The button is used for controlling the working state of the pair of 3D glasses, the communication chip is used for receiving a synchronizing signal of a 3D displaying device, and magnifying glasses are arranged in front of the lenses. According to the pair of 3D glasses with the amplification function, the watched videos can be amplified, the pair of 3D glasses has the amplification function, and the watching effect is good after the user wears the 3D glasses with the amplification function.

The invention relates to an image sensor, a camera module and terminal equipment. The image sensor comprises an optical array and a receiving array, wherein the optical array comprises a plurality ofoptical elements arranged in an array; each optical element comprises a shell, an electrode, a first liquid and a second liquid, wherein the electrode is fixedly opposite to the shell, the shell is provided with a cavity, the electrode can form an electric field in the cavity, the first liquid and the second liquid are arranged in the cavity in a mutually insoluble manner, the first liquid and thesecond liquid are transparent liquid respectively, a refracting interface is formed between the first liquid and the second liquid, and the electrode can drive at least one of the first liquid and the second liquid to change the curvature of the refracting interface; and the receiving array comprises a plurality of receiving units arranged in an array, wherein any optical element corresponds to at least one receiving unit in an optical axis direction, and the receiving unit is used for receiving light rays passing through the optical element. The optical elements can be used for adjusting a chief ray angle to be matched with a chief ray angle of a zoom lens group in order to improve the imaging quality.

The invention relates to the technical field of photocopy equipment, in particular to a product artistic design photocopy table with a scaling function. The product artistic design photocopy table comprises a slide groove, a convex mirror frame and pulleys. The slide groove is formed in two ends of the lower portion of a design platform and is connected with the design platform by means of welding; the convex mirror frame and a convex mirror are mounted in the middle of the inside of the slide groove, and the slide groove is connected with the convex mirror frame and the convex mirror by the pulleys in an embedded manner; sleeves are arranged at the two ends of the lower portion of the design platform, and the design platform is connected with the sleeves by means of welding; upright columns are mounted in the middles of the lower portions of the sleeves, and the sleeves are connected with the upright columns in a sleeving manner. The product artistic design photocopy table has the advantages that the product artistic design photocopy table is structurally improved and is combined with the prior art, accordingly, a product artistic design photocopy table body has powerful functions, is high in practicality, can be detached and has the scaling function, the problems of existing devices in the prior art can be solved, the shortcomings of the existing devices in the prior art canbe overcome, and the product artistic design photocopy table is practical.

The invention discloses a display cabinet with an amplification function for cultural relic marketing promotion. The display cabinet includes a base; a display cabinet body is arranged at the top endof the base; the display cabinet body is of a cube structure; the bottom surface of the display cabinet body is connected with the top surface of the base; the top surface, the front face, the back face, the left face, and the right face of the display cabinet body are provided with magnifying lenses; the magnifying lenses are embedded in the side wall of the display cabinet body and connected with the display cabinet body, an objective table is arranged in the display cabinet body, the objective table is arranged in the center of the interior of the display cabinet body, the bottom surface ofthe objective table is connected with the bottom surface of the interior of the display cabinet body, and the top end of the objective table corresponds to the magnifying lenses. The dispplay cabinethas the beneficial effects that the display cabinet has a magnifying function, so that an exhibit can be carefully viewed by an appreciator even if the exhibit is separated from the appreciator by acertain distance, and the marketing exhibition effect is effectively improved; and the display cabinet is simple in structure, convenient to use, convenient to repair or maintain in the later period,easy to manufacture and easy to popularize.

The invention relates to a single-degree-of-freedom dual-mode infinite turnover mechanism. The mechanism comprises a first branch chain (1), a second branch chain (2) and a third branch chain (3), wherein the first branch chain (1) and the second branch chain (2) are rotationally connected through a first right connecting rod (1-3), a second right connecting rod (1-4), a third left connecting rod(2-1) and a fourth left connecting rod (2-2); the second branch chain (2) is rotatably connected with the third branch chain (3) through a third right connecting rod (2-3), a fourth right connecting rod (2-4), a fifth left connecting rod (3-1) and a sixth left connecting rod (3-2); and the third branch chain (3) is rotationally connected with the first branch chain (1) through a fifth right connecting rod (3-3), a sixth right connecting rod (3-4), a first left connecting rod (1-1) and a second left connecting rod (1-2). Through the connection, the whole mechanism forms a closed loop. The single-degree-of-freedom mechanism has dual motion modes of columnar zooming and infinite overturning, and can be contracted into one beam or unfolded into a polygonal loop; and meanwhile, the scaling ratio of the shape of the polygonal loop to the mechanism can be adjusted by changing the number of shear fork units in the first branch chain (1), the second branch chain (2) and the third branch chain (3).

The invention relates to a projection lens, which sequentially includes a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a sixth lens along the optical axis from the projection side to the image source side group. The first lens group has negative refractive power, including the first lens, the second lens group has positive refractive power, the third lens group has positive refractive power, the fourth lens group has negative refractive power, the fifth lens group has positive refractive power, and the sixth lens group has Positive refractive power, where the projection lens meets the following conditions: 0.4<R 12 / f<2.5; R 12 is the curvature radius of the image source side of the first lens, and f is the effective focal length of the projection lens.

In a neutron moderator, a neutron irradiation method, and a hazardous substance detection apparatus, an inspection chamber (21) where an inspection target (A) can be inserted and removed is provided. Around this inspection chamber (21), a thermal neutron absorbing material (15) is provided. A neutron generator(11) is arranged facing the inspection target (A) in the inspection chamber (21), and a neutron moderating material (12) is arranged at an opposing side of the inspection target (A) with respect to the neutron generator (11). The external surface of the neutron moderating material (12) is covered with gamma ray shielding materials (13, 14), and a Ge detector (24) and a BGO detector (25) are provided to detect gamma ray emitted from the inspection target (A). With this configuration, necessary fast neutron and thermal neutron can be taken out, while suppressing generated secondary gamma ray. Accordingly, a hazardous substance can be detected accurately regardless of a constituent element thereof.

The invention belongs to the field of security monitoring data processing, and specifically provides a method and device for online editing of laser lens synchronous data based on the web. The method includes the following steps: receiving video data and laser synchronous data sent by embedded optical equipment; After the video data is decoded, the current visible light video and the size of the laser spot are played in real time; the received laser synchronization data is used to generate a line chart with the visible light position data and the laser position data as coordinates; the inflection point of the line chart is traversed, and the location of the inflection point is received command, compare the position value of the inflection point positioned with the current video, and edit and adjust the position value of the inflection point according to the comparison result; after the traversal is completed, the edited laser synchronization data is sent back to the embedded optical device. It is convenient to see the change rule of the synchronous data, complete interpolation, change value, delete value operation and real-time presentation of the effect of value change.

The invention relates to a zoom lens. The zoom lens comprises a first lens group with positive focal power, a second lens group with negative focal power, a diaphragm, a third lens group with positivefocal power and a fourth lens group with positive focal power, which are sequentially arranged from an object side to an image side; the first lens group and the third lens group are fixed groups, the second lens group is a zoom group capable of moving along an optical axis, and the fourth lens group is a focusing group capable of moving along the optical axis; the second lens group and the thirdlens group satisfy 9.5 <= (d1 - d2) / (fT / fW) <= 13, and d1 is the distance from the image side surface of the last lens of the second lens group to the object side surface of the first lens of the third lens group at the wide-angle end of the zoom lens; d2 is the distance from the image side surface of the last lens of the second lens group to the object side surface of the first lens of the thirdlens group at the telescopic end of the zoom lens; and fT is the focal length value of the telescopic end, and fW is the focal length value of the wide-angle end. The imaging quality is high.

The invention discloses an infrared continuous zooming optical system based on composite zooming and having an ultra-large zoom ratio. The infrared continuous zooming optical system sequentially comprises a continuous zooming group and a secondary zooming group from an object space to an image space along an optical axis direction; the continuous zooming group sequentially comprises a main objective lens group, a secondary objective lens group, a primary zooming group, a compensation group and a fixed group from an object side to an image side along the optical axis direction; the secondary zooming group sequentially comprises a first rear group lens, a second rear group lens and a third rear group lens from the object side to the image side along the optical axis direction; when the primary zooming group is farthest from the compensation group, the optical system is in a short focus state; when the primary zooming group is closest to the compensation group, the optical system is in along focus state; the light beam from the object side is converged between the fixed group and the first rear group lens through the continuous zooming group; and the first rear group lens, the secondrear group lens and the third rear group lens are used for finally imaging an image formed by the continuous zooming group on the target surface of the detector. The ultra-large zoom ratio continuouszooming compact miniaturization design is adopted, the system image quality is good, and the imaging is clear.

The invention relates to a laser illuminator used for underwater distance gating detection imaging, and belongs to the technical field of laser illuminators. The laser illuminator comprises a laser illumination drier, a laser device light source, a TEC semiconductor cooler and an illuminating optical system. The laser illuminator can transmit data with an underwater distance gating detection imaging device, is used for illuminating the underwater distance gating detection imaging device, and has the characteristics of compact structure, small size, long life, high stability and wide working temperature range. The laser device light source adopts a pulse solid laser device, the wavelength of the light source is 532nm with low underwater absorption efficiency, and targets 5-100m lower than the water level can be illuminated by using a Q switching technology. The illuminating optical system has a zooming function, and allows the divergence angle of the illumination laser to be continuously adjustable in a range of 15-60DEG in order to make the laser illuminator be flexible in the underwater distance gating detection imaging application. The TEC semiconductor cooler can adjust the temperature of the laser device light source to guarantee the working stability.

The invention discloses an amplifier based on a distributed filter. The amplifier comprises a pump light source, a first optical isolator, a filtering and amplifying module and a second optical isolator, an output end of the pump light source is connected with an input end of the filtering and amplifying module through an optical fiber, an output end of the filtering and amplifying module is connected with an input end of the second optical isolator, and an output end of the second optical isolator is an output end of the amplifier based on the distributed filter. An input end of the first optical isolator is connected with a signal light source, and an output end of the first optical isolator is connected with an input end of a first wavelength division multiplexer. The optical fiber distance for realizing the amplification function is long, N filters are placed on an optical fiber for realizing the amplification function, the multistage noise reduction is realized, and the signal-to-noise ratio is further improved.

The invention provides a camera lens. The pick-up lens sequentially comprises a front lens group and a rear lens group from a shot object side to an imaging side, the front lens group comprises a first lens, a second lens with positive focal power and a third lens with positive focal power; the rear lens group comprises a fourth lens of which the surface close to the imaging side is a convex surface and a fifth lens of which the surface close to the imaging side is a convex surface; wherein the distance TTL1 on the axis from the surface, close to the shot object side, of the first lens of the camera lens in the macro configuration to the imaging surface and the effective focal length f of the camera lens meet the following condition: TTL1 / flt; 1.3, 2, 3; the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens meet the condition of 0 lt; f2 / f4lt; and 1.0. According to the invention, the problem that optical zooming and high image quality are difficult to realize at the same time in a camera lens in the prior art is solved.

The invention discloses a smart television with a camera provided with the zoom function and a zoom method of the camera of the smart television. The smart television comprises a machine shell and a screen, the camera is installed above the machine shell, a teleconverter array disc is installed on the back side of the screen, a plurality of teleconverters are installed on the array disc, and the array disc is connected with a driving motor which is used for driving the array disc to move to switch the teleconverters opposite to the camera. According to the smart television, the mode of replacing the teleconverters is adopted to enable a lens to achieve the zoom function, the field range of the camera can be further adjusted according to the size of the screen, the manufacturing cost is low, and the operation is easy to ahcieve. When the smart television is used, the lens of the camera is flush with the teleconverters to achieve the zoom function of the lens, the teleconverter array disc with the teleconverters is arranged, the magnification times of the teleconverters on the teleconverter array disc are different, therefore, the driving motor drives the teleconverter array disc to rotate to enable the lens to be flush with the needed teleconverters according to requirements of the lens, and convenience is brought for the lens to conduct zooming for corresponding magnification times.

The invention relates to a single-degree-of-freedom double-mode infinite turning mechanism. These mechanisms all include first to third scissor branch chains (1, 2, 3), and the first scissor branch chain (1) and the second scissor branch chain (2) pass through the first and second right connecting rods. (1‑3, 1‑4), the third and fourth left connecting rods (2‑1, 2‑2) realize the rotational connection; the second scissor branch chain (2) and the third scissor branch chain (3) Through the third and fourth right connecting rods (2-3, 2-4), the fifth and sixth left connecting rods (3-1, 3-2) to realize the rotational connection; the third scissors branch chain (3) and The first scissors branch chain (1) realizes rotational connection by the fifth and sixth right connecting rods (3-3, 3-4), the first and the second left connecting rods (1-1, 1-2); The above connection, the whole mechanism forms a closed loop. This type of single-degree-of-freedom mechanism has a dual motion mode of columnar scaling and infinite flipping, which can be contracted into a bundle or expanded into a polygonal loop; at the same time, by changing the first to third scissor branches (1, 2, 3) The number of scissor elements, which can adjust the scaling ratio of the polygonal loop shape and the mechanism.

The invention belongs to a magnification lens, and particularly relates to a magnification cover applied to small size display screen font magnification. The small size display screen font magnification cover provided by the invention comprises the magnification lens and a frame. The magnification lens and the frame are bonded through super glue. The small size display screen font magnification cover is characterized in that the small size display screen font magnification cover further comprises a clamp. According to the invention, the small size display screen font magnification cover has the advantages that the small size display screen font magnification cover has a magnification function, is suitable for small size screen reading, has a clamp function and a chuck, and can be conveniently fixed on all kinds of display screens.

The invention aims to solve the safety monitoring problem of servers, and discloses a safety monitoring device for a server. The device comprises: a supporting plate, wherein supporting rods are symmetrically mounted on the left side surface of the supporting plate; connecting columns are fixedly mounted at the left ends of the supporting rods; illuminating lamps are fixedly mounted on the right side surface of the connecting columns; sliding pipes are symmetrically installed at the two ends of the connecting column; connecting shafts are installed between the sliding pipes and the connecting columns; a connecting frame is arranged between the sliding pipes in a sleeved mode; fastening screws are installed between the connecting frame and the sliding pipes; a motor is fixedly installed on the upper side of the right end of the connecting frame; a lantern ring is fixedly installed on the lower side of the right end of the connecting frame; a rotating shaft is installed between the motor and the lantern ring; a first rotating plate, a second rotating plate, a third rotating plate, and a fourth rotating plate are installed on the surface of the rotating shaft. According to the device, a circuit board in a server is subjected to safety monitoring through rotating plates with multiple functions, so that problems of the server can be found in time, and the server is guaranteed to be safer.

The application relates to an image sensor, a camera module and a terminal device. The image sensor includes: an optical array, including a plurality of optical elements arranged in an array, the optical elements include a housing, electrodes, a first liquid and a second liquid, the electrodes are fixed relative to the housing, the housing is provided with a cavity, and the electrodes can be placed in the air. An electric field is formed in the cavity, the first liquid and the second liquid are arranged in the cavity immiscibly, the first liquid and the second liquid are respectively transparent liquids, and a refraction interface is formed between the first liquid and the second liquid, and the electrodes can Drive at least one of the first liquid and the second liquid to change the curvature of the refraction interface; and a receiving array, including a plurality of receiving units arranged in an array, any optical element corresponding to at least one receiving unit along the optical axis direction, receiving The unit is used to receive light passing through the optical element. The above-mentioned optical elements can adjust the chief ray angle to match the chief ray angle of the zoom lens group, so as to improve the imaging quality.

A lens device comprises a first lens group, a second lens group, a third lens group and a fourth lens group. The first lens group includes a first lens having negative refractive power and a second lens having negative refractive power. The second lens group includes a third lens having positive refractive power. The third lens group includes a fourth lens having positive refractive power. The fourth lens group includes a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having positive refractive power. The lens device satisfies thefollowing condition: f is the effective focal length of the lens device and is the effective focal length of the first lens group.

The invention provides a cross stereo image viewing device which is provided with two lens cones. The frame of each lens cone is provided with a convex lens and a concave lens. The cone body of each lens cone is formed by an internal cone and an external cone which are spirally connected. Connecting sheets are fixedly connected on each lens cone. The connecting sheets arranged on each lens cone are divided into an upper sheet and a lower sheet. The connecting sheets are provided with hinge holes. The overlapped hinge holes are internally provided with a flexibly connected hinge shaft. The axial direction of the hinge shaft is perpendicular to the axial direction of the lens cones. A locking mechanism is installed between the hinge shaft and the connecting sheets. According to the viewing device, the two lens cones can be adjusted so that the two optical axes are enabled to cross in front of an object lens. When stereo image pairs are viewed, the left eye sees the plane image of the right side through the left lens group of the viewing device, the right eye sees the plane image of the left side through the right lens group of the viewing device, and the extension line extends to the left and right stereo image pairs so that the objective of viewing the large cross stereo images can be realized. The cross stereo image viewing device has an amplification function so that the remote or nearby stereo image pairs can be clearly seen by adjusting the distance between the eye lens and the object lens of the viewing device.

The present invention relates to a split zoom lens comprising: at least two lens components, each of which comprises at least one lens; and a zoom lens which is arranged between the two lens components, wherein the at least two lens components and the zoom lens jointly form an optical system capable of imaging, and the relative position of at least one lens component and the zoom lens is determined by active calibration. The invention also provides a corresponding camera module based on the split zoom lens, and an assembling method of the split zoom lens and the camera module. According to the invention, the optical lens or the camera module with the zoom capability can be realized on the premise of ensuring the small size; and the trepanning size of the trepanning screen can be reduced.