39 results about "Teleconverter" patented technology

The invention discloses a teleconverter lens. The teleconverter lens comprises a system front group and a system rear group, the system front group comprises a first lens group and a second lens group, and the system rear group comprises a third lens group and a fourth lens group; the first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object plane to the image plane along the optical axis; the second lens group comprises 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 along the optical axis; the third lens group comprises a tenth lens and an eleventh lens which are sequentially arranged from the object plane to the image plane along the optical axis; the fourth lens group comprises a twelfth lens and a thirteenth lens; the focal length fz1 of the first lens group and the focal length fz2 of the second lens group satisfy 0.8200 lt; fz1 / fz2lt; the focal length fz3 of the third lens group and the focal length fz4 of the fourth lens group satisfy 1.6800 lt; fz3 / fz4lt; and 7.3000). Therefore, the lengths of front and back groups of the system can be reduced, the total length of the system is less than 120mm, and the characteristic of short total length of the system is achieved.

The utility model relates to the technical field of camera focusing, and provides a lens focusing device, which comprises a focusing lens and a focusing assembly, the focusing assembly is provided with a light through hole penetrating through two sides of the focusing assembly, and the light through hole is coaxial with the rotation axis of the focusing assembly. A first connecting part and a second connecting part are arranged on the two sides of the focusing assembly respectively, the focusing lens is detachably arranged on the first connecting part, and the second connecting part is used for being connected with a to-be-adjusted lens. The lens focusing device provided by the utility model is used for solving the defect of alternately executing focusing and imaging verification in the prior art, and the focusing lens is integrated in the focusing assembly, so that an external teleconverter does not need to be repeatedly moved in the focusing operation, and an operator can synchronously complete focal length adjustment and imaging verification only by adjusting the focusing assembly. And positioning error accumulation caused by multiple times of displacement of the teleconverter is avoided.

The invention aims to provide a dual-camera focusing and focus checking system based on a UVC mode, and the system achieves the automatic switching of an equivalent test distance between a main camera and an auxiliary camera through a cooperative control mechanism of an electric sliding rail type Chart platform and a teleconverter module. MTF threshold tables corresponding to different test stages are called according to different test stages of focusing, focus checking, final inspection and the like of the camera, so that the MTF values of the different test stages are compared; through adaptive focusing and focus checking of the double cameras based on the UVC mode, the cameras delivered to a user can work in an optimal use state.

An additional teleconverter lens of a mobile phone comprises seven lenses. The first lens R1 is equal to 28.5 to 29.5, and the second lens R2 is equal to 95.5 to 96.5; the second lens R1 is equal to infinity, and R2 is equal to 42-43; the R1 of the third lens ranges from 19.5 to 20.5, and the R2 of the third lens ranges from 109.5 to 110.5; a fourth lens R1 is equal to 109.5 to 110.5, and R2 is equal to 15 to 16; a fifth lens R1 is equal to 15 to 16, and R2 is equal to 199.5 to 200.5; the sixth lens R1 is equal to 31.5 to 32.5, and the sixth lens R2 is equal to 10 to 11; and the seventh lens R1 is equal to 17 to 18, and R2 is equal to 64 to 65. The additional teleconverter lens of the mobile phone is high in definition when the mobile phone is matched with an external lens to shoot remote portraits.

The embodiment of the utility model belongs to the technical field of lens focusing. The utility model further relates to a simple focusing device of the camera module with the threaded lens, the simple focusing device comprises a shell, a light source panel and a teleconverter located below the light source panel are arranged in the shell, the light source panel is used for placing the SFR image, the bottom of the shell is detachably connected with a focusing mechanism, and the focusing mechanism is used for focusing the SFR image. And the focusing mechanism is used for adjusting the focusing of the camera module lens. According to the camera module, the focusing device is introduced, and the focusing operation is performed before the full-sealing thread glue is adopted for fixing, so that the influence of AA equipment instability and material tolerance on the performance of the camera module can be compensated, the analysis yield of the camera module is remarkably improved, defective products are reduced, the production cost is reduced, and the market competitiveness of products is improved.

The application discloses a teleconverter lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens and a fifteenth lens arranged in sequence along an optical axis from an object plane to an image plane, wherein the first lens and the second lens are cemented, the third lens and the fourth lens are cemented, the seventh lens and the eighth lens are cemented, the tenth lens and the eleventh lens are cemented, and the thirteenth lens and the fourteenth lens are cemented. The teleconverter lens provided by the embodiment of the application realizes multiple performances such as 3.36 times high magnification, F2.63 large aperture and distortion lower than 0.6% through the structural design of 15 lenses and the matching of the focal power of each lens, and meanwhile, the total length of the teleconverter lens is controlled within 105 mm, so that the telephoto experience with high performance and portability is provided for users.

The application provides an optical detection device for a deep-cavity optical fiber end face and a cleaning detection equipment, and belongs to the field of optical communication. The optical detection device comprises a light source barrel lens, an illumination turning unit, an imaging turning unit, a telescope lens group, a detection prism, an imaging barrel lens, an imaging unit and a focusing unit. The imaging turning unit is used for turning the image and expanding the space. The telescope lens group realizes long-distance image transmission in a narrow space. After the oblique outgoing illumination light of the detection prism is deflected, it is perpendicular to the surface to be detected, and the illumination is more uniform. The imaging barrel lens adopts an image-side telecentric design. The imaging unit adopts a no-interface Schmitt structure design, which can solve the shallow depth of field problem caused by high resolution and realize automatic focusing with the focusing unit. The overall structure of the application is simple and stable in imaging. The front-end integrated prism turning light path eliminates the perspective error, and the double light path design improves the detection efficiency. The application can be widely applied in the fields of optical communication, 3C, semiconductor and the like with deep-cavity scenes.

The invention discloses a shooting parameter adjusting method and device and electronic equipment, and belongs to the technical field of camera shooting. The shooting parameter adjusting method is executed by the electronic equipment, the electronic equipment comprises a first camera, the first camera is provided with a teleconverter lens, and the method comprises the following steps: acquiring a holding position of a user on the teleconverter lens under the condition of displaying a shooting preview interface; and according to the holding position, adjusting shooting parameters and updating the shooting preview interface.

The invention discloses a camera calibration method based on a teleconverter and a related device, and relates to the technical field of photoelectric machinery, calibration equipment comprises a jig, the teleconverter and a graph card installation assembly, and working modes comprise a debugging mode and a calibration mode. The graph card installation assembly is provided with a debugging graph card in a debugging mode, and is provided with a calibration graph card in a calibration mode. And starting the calibration equipment. And in the debugging mode, the target camera is installed in the jig, and the relative positions of the target camera, the teleconverter and the debugging diagram card are adjusted, so that the imaging of the target camera on the debugging diagram card through the teleconverter is in a clear state. In the calibration mode, by adjusting the position of the jig, the target camera is controlled to shoot the calibration graph card through the teleconverter to obtain multiple calibration images, and the multiple calibration images are located at different positions of the field angle of the target camera; processing the plurality of calibration images by using a target release method to obtain calibration parameter values corresponding to the target camera; and writing the calibration parameter value into the target camera.

The utility model discloses three-eye welding equipment for a camera. Comprising a workbench, a welding mechanism arranged on the workbench, a glass drawing card mechanism arranged at the end of one side of the workbench, a mounting platform arranged on the workbench and located on one side of the welding mechanism, a first X-axis moving mechanism arranged below the mounting platform, and a teleconverter mechanism arranged on one side of the mounting platform. The fixing tool is arranged on the mounting platform and located on one side of the teleconverter mechanism, the welding mechanism is fixedly mounted on the workbench, the glass drawing card mechanism is fixedly mounted on the workbench, the first X-axis moving mechanism is fixedly mounted on the workbench, the mounting platform is connected with the first X-axis moving mechanism, and the second X-axis moving mechanism is fixedly mounted on the workbench. And the fixing tool is fixedly mounted on the mounting platform. The welding device has the advantages of being good in welding effect, convenient to operate, capable of conducting power-on testing on the camera, capable of improving working efficiency and high in automation degree.

The utility model discloses an active focusing device for a camera and camera assembling equipment. The active focusing device for the camera comprises a rack, a lens clamping mechanism and a visual centering mechanism, the lens clamping mechanism comprises a visual centering channel; the visual centering mechanism comprises an image acquisition card, a first image acquisition device, a teleconverter and a second image acquisition device; the image acquisition card, the first image acquisition device, the teleconverter, the visual centering channel and the second image acquisition device are sequentially arranged along a first direction; the image acquisition card is provided with an alignment mark; the first image collector is arranged on the rack in a sliding manner and is provided with a first collection port facing the visual centering channel; the teleconverter is arranged on the rack in a sliding manner; the teleconverter is centered with the visual centering channel along a first direction through the first image collector; the second image collector is provided with a second collection port facing the visual centering channel and the alignment mark; the image acquisition card is mounted on the rack in a position-adjustable manner; and the lens clamping mechanism is centered with the alignment mark along the first direction through the second image collector.

The utility model discloses a teleconverter lens which comprises a system front group and a system rear group. The system front group comprises a first lens group and a second lens group, and the system rear group comprises a third lens group and a fourth lens group; the first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object plane to the image plane along the optical axis; the second lens group comprises 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 along the optical axis; the third lens group comprises a tenth lens and an eleventh lens which are sequentially arranged from the object plane to the image plane along the optical axis; the fourth lens group comprises a twelfth lens and a thirteenth lens; the focal length fz1 of the first lens group and the focal length fz2 of the second lens group satisfy 0.8200 lt; fz1 / fz2lt; the focal length fz3 of the third lens group and the focal length fz4 of the fourth lens group satisfy 1.6800 lt; fz3 / fz4lt; and 7.3000). Therefore, the lengths of front and back groups of the system can be reduced, the total length of the system is less than 120mm, and the characteristic of short total length of the system is achieved.

The utility model discloses a lens detection device which comprises an operation platform, a rotating disc is arranged on the operation platform, and a plurality of lens carriers are uniformly distributed on the edge of the rotating disc along the circumferential direction of the rotating disc. A pre-focusing assembly, a visual positioning assembly, a fine focusing assembly, a smudginess testing assembly, a dispensing assembly and a curing assembly are sequentially arranged on the operation platform around the rotating disc, and the rotating disc rotates to drive the lens assembly to sequentially pass through the focusing assembly, the visual positioning assembly, the fine focusing assembly, the smudginess testing assembly, the dispensing assembly and the curing assembly. According to the lens detection device provided by the utility model, the visual positioning assembly is arranged to carry out visual positioning on the lens before fine focusing, so that the coaxiality of the center of the teleconverter and the lens is ensured, the situation that the stress of the clamping device deviates to one side is avoided, and the influence of a lens structure error on detection is avoided; and the detection requirement of a high-definition lens can be met.

The invention discloses a laser debugging device, and relates to the technical field of laser, the laser debugging device is used for debugging the relative position of a laser diode and a shell, the laser debugging device comprises a mounting plate, a fixing assembly, a position adjusting assembly, a distance increasing lens and a receiving camera, the fixing assembly is arranged on the mounting plate, and the fixing assembly is provided with a first fixing position; the first fixing position is used for fixing the shell; the position adjusting assembly is arranged on the mounting plate and located on one side of the fixing assembly, the position adjusting assembly is provided with a second fixing position, the second fixing position is used for placing the laser diode, and the position adjusting assembly is used for adjusting the relative position of the laser diode and the shell; the distance increasing lens is arranged on the fixing assembly and used for increasing the distance of laser emitted by the laser diode. The receiving camera is arranged on the side, away from the position adjusting assembly, of the fixing assembly, located at the focal point of the distance increasing lens and used for receiving light spots emitted by the laser diode. According to the technical scheme provided by the invention, the size of the debugging device is reduced while long-distance light spot testing is realized at a short distance.

1. Name of the product in this design: Action Camera Teleconverter. 2. Purpose of this design: For use in action camera lenses. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A lens barrel (10) comprises a lens mount unit (20a), a retractable lens frame (18b), a seventh lens group unit (18), three cam pins (18ad), guide shafts (18af), a pressing member (18d), and a compression spring (18ag). At least two of the guide shafts (18af) are provided to the seventh group unit (18) and are disposed in the optical axis (X). The compression spring (18ag) applies a biasing force that biases the retractable lens frame (18b) against the pressing member (18d) in the optical axis (X) direction, and expands and contracts when a teleconverter (30) is mounted to the lens mount unit (20a), causing the retractable lens frame (18b) to retract to the subject side in the optical axis (X) direction.

The invention discloses a gas-solid two-phase boundary layer inner and outer area synchronous measurement device, which comprises an experiment area for gas-solid two-phase flow to penetrate through, a high-energy pulse laser is arranged on the experiment area, fluorescent paint is sprayed on the inner wall of the experiment area, and a plurality of prime lens cameras are arranged on the periphery of the experiment area. The inner wall of the experimental area is provided with a telephoto lens and a double telephoto lens, and the telephoto lens camera and the prime lens camera are both connected with a synchronous controller; the invention also discloses a method for synchronously measuring the inner and outer regions of the gas-solid two-phase boundary layer. According to the invention, the measurement precision is improved.

The invention relates to AOA multi-group lens AA equipment, which is used for optically aligning a G1 lens, a G2 lens and a Prism, and comprises a base module, and an SUT module is slidably arranged on the base module and is used for bearing and adjusting the posture of the Prism; the SUT module is provided with a Prism jig used for placing a Prism; the G1 feeding module is arranged on the base module, is located on one side of the SUT module and is used for adsorbing, moving and adjusting the posture of the G1 lens; the G2 feeding module is arranged on the base module in a sliding mode, located on the side, away from the G1 feeding module, of the SUT module and used for adsorbing, moving and adjusting the posture of the G2 lens. The teleconverter module is arranged on the base module and corresponds to the Prism jig; the G1 feeding module and the G2 feeding module transfer a G1 lens and a G2 lens to the Prism jig respectively, the teleconverter module is used for collecting optical images of the Prism, the G1 lens and the G2 lens, and pose adjustment is carried out through the SUT module, the G1 feeding module and the G2 feeding module, so that optical axes of the Prism, the G1 lens and the G2 lens coincide and are aligned, and the optimal optical performance of a final finished product is achieved.

The invention discloses camera module detection equipment, and relates to the field of camera module testing, and the equipment comprises a machine table, a table plate is fixed on the machine table, one end of the table plate is provided with a clamping frame, the clamping frame is used for fixing a camera module to be tested, the other end of the table plate is provided with a moving assembly, the moving assembly is provided with a chart, and a plurality of distance increasing frames are arranged between the chart and the clamping frame. The distance increasing frame is provided with a distance increasing mirror, the distance increasing frame is in sliding connection with the platen, the moving direction of the distance increasing frame is perpendicular to the moving direction of the chart, and the platen is provided with a control screen; the distance increasing frame slides on the platen, the object distance is fixedly adjusted, the distance between the chart and the to-be-detected camera module is adjusted through the moving assembly, the object distance is movably adjusted, then the imaging effect of the camera module under different object distances is achieved, long-distance object distance detection can be achieved, adjustment is convenient, precision is high, the occupied area is reduced, and the cost is reduced. And the same space can accommodate more detection machines, so that the space utilization rate is improved, and the cost is reduced.

The application discloses an automatic focusing method of a limited far variable conjugate distance variable magnification lens, which comprises the following steps: constructing a measurement two-dimensional lookup table according to a variable magnification group magnification Z, a uniformly coarse divided object distance WD and a focusing group position FP; performing polynomial fitting on each column of data of the measurement two-dimensional lookup table, and constructing a fitting two-dimensional lookup table FP'(WD, Z) by using the fitting values of the uniformly coarse divided WD and FP; moving the variable magnification group and the focusing group to realize variable magnification following according to the current actual WD and the FP'(WD, Z); determining a search range and a single search step in the FP'(WD, Z) according to the current Z, and performing fast automatic focusing by using a hill climbing search method; reversely searching the closest FP by taking the current Z and the current FP in the automatic focusing result as the key, and taking the WD corresponding to the closest FP as a new current WD; and repeatedly performing subsequent variable magnification following and fast automatic focusing according to the new current WD and the FP'(WD, Z). The method reduces the measurement workload, guarantees the accuracy of subsequent variable magnification following, improves the experience of users, and further reduces the time of subsequent automatic focusing.

This invention discloses a phase-shift detection autofocus device and method using dual-wedge plate modulation, relating to the field of image processing technology. The device includes a beam splitter, a teleconverter, dual wedge plates, a first tube mirror, a second tube mirror, a monochrome image sensor, and a color image sensor. The beam splitter divides the original sample optical path acquired by the microscope objective into an imaging optical path and a focusing optical path. The optical axis of the imaging optical path is aligned with the optical axis of the objective lens. The first tube mirror and the color image sensor are sequentially arranged along the imaging optical path. The teleconverter, dual wedge plates, second tube mirror, and monochrome image sensor are sequentially arranged along the focusing optical path. The two wedge plates in the dual wedge plates are equidistant from the optical axis of the focusing optical path. The dual wedge plates are used to modulate the light rays on the left and right halves of the focusing optical path, thereby providing a phase-shift detection autofocus device that combines focusing direction discrimination capability, high focusing accuracy, and a large focusing range.

The present invention provides a mechanism for quickly flipping a magnifying mirror, comprising a red dot sight and a magnifying mirror, a bracket seat, a flipping mechanism and the magnifying mirror, wherein the flipping mechanism is rotatably and adjustably arranged on the bracket seat; the bottom of the magnifying mirror is fixed on the flipping mechanism, and the magnifying mirror further comprises a limiting mechanism arranged between the bracket seat and the flipping mechanism. When the magnifying mirror is required to participate, the original aiming position is kept unchanged, and after the handle is bent into place, the rebound mechanism automatically pushes the handle out, so that the handle is positioned by the limiting mechanism, and at this time the magnifying mirror is just flipped to be located on the same optical axis as the red dot sight. In this state, the magnifying mirror can participate in the red dot aiming through the magnification of the magnifying mirror. When the magnifying mirror is not required to participate, the handle is first pushed and then bent in the opposite direction, so that the magnifying mirror is reversely flipped to avoid the red dot sight, so that the magnifying mirror is quickly flipped by one hand through the flipping mechanism, and the original aiming position is not affected.

The utility model discloses a manual focusing device which is characterized in that the manual focusing device comprises a rack, a countertop is arranged in the middle of the rack, a display screen, a sliding rail, a sliding block, a linear motion module and a test box are arranged on the countertop, the display screen is arranged on the countertop through a support, the test box is located in the middle of the countertop, and the test box is used for placing a camera module. The sliding block is arranged on the sliding rail in a sliding fit mode, a teleconverter support is arranged on the sliding block, a teleconverter is arranged on the teleconverter support, the teleconverter can move to the right-facing upper portion of the testing box so that the camera module can directly face the center of the teleconverter, a plane light source capable of vertically moving is arranged on the linear motion module, and the plane light source is located right-facing upper portion of the teleconverter. The test box is electrically connected with a host which is electrically connected with the display screen. The manual focusing device has the beneficial effects that the focal length of the lens is changed through manual operation, so that the lens is clearly imaged, and an analysis result is displayed by the display screen.

The invention discloses a teleconverter lens and an imaging system, and relates to the technical field of photography. The teleconverter lens comprises a shell, a first lens group and a second lens group, the first lens group and the second lens group are located in the shell, the first lens group and the second lens group are sequentially arranged from an object plane to an image plane along an optical axis, the first lens group has positive focal power, the second lens group has negative focal power, and the second lens group has positive focal power. The total focal length of the teleconverter lens is the difference between the absolute value of the positive focal power of the first lens group and the absolute value of the negative focal power of the second lens group, and the first lens group can reciprocate along the optical axis relative to the second lens group to achieve focusing. By adopting the teleconverter lens and the imaging system, the total optical length of the lens can be reduced, and the imaging quality can be improved.

The invention discloses a teleconverter-based camera module optical axis calibration and distance simulation tool, and relates to the field of security monitoring, the teleconverter-based camera module optical axis calibration and distance simulation tool comprises a base and a camera module, the top of the base is provided with a horizontal lead screw mechanism, and an output structure of the horizontal lead screw mechanism is provided with a vertical lead screw mechanism in a transmission manner; a vertical lead screw mechanism is arranged on the base, an output structure of the vertical lead screw mechanism is in transmission connection with a camera mounting seat, an optical assembly is arranged at the top of one side of the base and comprises a three-order distance increasing clamping seat and a distance increasing lens, the distance increasing lens is arranged on the inner side of the top of the three-order distance increasing clamping seat in a sleeving mode, and the bottom of the three-order distance increasing clamping seat is fixed to the top of one side of the base. When the camera module optical axis calibration and distance simulation tool based on the teleconverter is used, the problem that ideal calibration of a telephoto lens cannot be achieved within a short distance can be successfully solved by accurately adjusting the positions of the camera module and the teleconverter, and the camera module optical axis calibration and distance simulation tool based on the teleconverter is particularly suitable for application scenes such as security monitoring, road monitoring and night imaging.

The invention relates to full-automatic four-station periscopic AA equipment which comprises a rack, a PCB feeding module, an LENS feeding module, a four-station periscopic AA module, an NG tray module and a control system are arranged on the rack, the PCB feeding module comprises a PCB feeding rail and a PCB supply module, the LENS feeding module comprises an LENS Tray feeding module, the LENS Tray feeding module is fixed to the rack through countersunk bolts, and the NG tray module is fixed to the rack through the countersunk bolts. And a conveying track of the LENS Tray feeding module is aligned with a feeding hole of the four-station periscope AA module. According to the invention, the PCB feeding function, the LENS feeding function, the four-station processing function and the NG material collecting function are integrated through the rack, so that a complete automatic process is formed; the light path assembly adopts a design that a teleconverter and a 45-degree reflecting prism are separated, so that the white board detection module can be arranged between the teleconverter and a product to synchronously detect smudginess and an optical center, and compared with an integrated structure, the product yield is remarkably improved; four stations cooperate to improve the production efficiency, and the large-scale production requirement is met.

A zoom lens consists of, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear group including a plurality of lens units. A distance between adjacent lens units is changed during zooming. The rear group includes a diaphragm, an n-th lens unit disposed closest to an image plane and having a positive refractive power, and an (n−1)-th lens disposed on the object side of the n-th lens unit and having a negative refractive power. A predetermined condition is satisfied.

The application relates to the technical field of camera modules, in particular to a motor testing method and system, the method comprising the following steps: S100, a module is controlled to move to a test position under a laser head, the value of a laser reading device is acquired, and the position of the module when the value of the laser reading device is within a preset laser reading range is recorded as a hysteresis test position; S200, the module is controlled to move to a preset focusing distance range of a magnification lens, and the position of the module is recorded as a focusing test position; S300, a light source assembly is built; S400, a component to be tested is placed in a test position of a test fixture; S500, the test fixture is controlled to move to the hysteresis test position, and motor hysteresis testing and stable time testing are performed on the component to be tested; S600, the test fixture is controlled to move to the focusing test position, and automatic focusing testing is performed on the component to be tested; and S700, an abnormality analysis result is generated. According to the scheme, the testing efficiency can be improved, the labor cost can be reduced, and the component to be tested can be prevented from being damaged due to multiple installation, disassembly and transfer during the testing process.

The invention discloses a double-wedge-plate modulated phase shift detection automatic focusing device and method, and relates to the technical field of image processing, the device comprises a beam splitter, a teleconverter, a double-wedge plate, a first barrel lens, a second barrel lens, a monochromatic image sensor and a color image sensor; the beam splitter divides a sample original light path collected by an objective lens of the microscope into an imaging light path and a focusing light path; the optical axis of the imaging light path is consistent with that of the objective lens; the first barrel lens and the color image sensor are sequentially arranged along an imaging light path; the teleconverter, the double-wedge-shaped plate, the second barrel lens and the monochromatic image sensor are sequentially arranged along a focusing light path; the distances between the two wedge-shaped plates in the double wedge-shaped plates and the optical axis of the focusing optical path are equal; and the double-wedge-shaped plate is used for modulating light on the left half side and the right half side in a focusing light path, so that the automatic focusing device for phase shift detection has the advantages of focusing direction discrimination capability, high focusing precision and large focusing range.

The utility model discloses an optical zoom lens performance test fixture which comprises a sliding support, a sliding rail is arranged on the sliding support, a test box support, a teleconverter support and a light source plate support are arranged on the sliding rail in a sliding mode through sliding blocks, and the test box support, the teleconverter support and the light source plate support are sequentially arranged. An image acquisition test box is detachably arranged on the test box support, a teleconverter is arranged on the teleconverter support, a light source panel is arranged on the light source plate support, a Chart graph is arranged below the light source panel, the image acquisition test box is electrically connected with a zoom lens, and the optical center of the zoom lens is opposite to the optical center of the teleconverter and the center of the Chart graph. The zoom lens performance testing device has the advantages that the performance of the zoom lens in the long-focus mode and the wide-angle mode can be tested on the same device, the construction cost of the device is low, image information is collected through the image collecting and testing box, image analysis is conducted through the upper computer, and performance testing of the zoom lens is completed.