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29 results about "Teleconverter" patented technology

A teleconverter (sometimes called tele extender) is a secondary lens mounted between a camera and a photographic lens which enlarges the central part of an image obtained by the objective lens. A 2× teleconverter for a 35 mm camera would enlarge the central 12×18 mm part of an image to the size of 24×36 mm in the standard 35 mm film format.

Lens focusing device

ActiveCN224247975UMountingsFocusing aidsRotational axisTeleconverter
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.
Owner:ZHEJIANG UNIVIEW TECH CO LTD

Dual-camera focusing and focus checking system based on UVC mode

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.
Owner:70MAI CO LTD

Additional teleconverter lens of mobile phone

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.
Owner:HUIZHOU HONGXIN PHOTOELECTRIC TECH CO LTD

A zoom lens

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.
Owner:东莞市宇承科技有限公司

Optical detection device and cleaning detection apparatus for a deep cavity fiber end face

PendingCN122651284AEliminate Perspective ErrorsImprove detection efficiencyDepth of fieldPrism
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.
Owner:TZTEK TECHNOLOGY CO LTD

Shooting parameter adjusting method and device and electronic equipment

PendingCN121151672ATelephoto lensSimulation
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.
Owner:VIVO MOBILE COMM CO LTD

Teleconverter lens

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.
Owner:DONGGUAN YUTONG OPTICAL TECH

Laser debugging device

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.
Owner:GOERTEK OPTICAL TECH CO LTD

Action camera teleconverter

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.
Owner:DONGGUAN CHENSONG ELECTRONIC TECHNOLOGY CO LTD

AOA multi-group lens AA device

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.
Owner:SHENZHEN ZHONGKE PRECISION TECH CO LTD

Camera module detection equipment

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.
Owner:TRULY OPTO ELECTRONICS

An autofocusing method for a limited-teleconverter zoom lens

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.
Owner:杭州图谱光电科技有限公司

Dual-wedge plate modulated phase-shift detection autofocus apparatus and method

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.
Owner:XIDIAN UNIV HANGZHOU RES INST +1

Manual focusing device

ActiveCN223625955UCamera moduleTeleconverter
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.
Owner:CHONGQING TIANSHI PRECISION TECH CO LTD

Teleconverter lens and imaging system

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.
Owner:SHENZHEN BAIBOHE TECH CO LTD

Camera module optical axis calibration and distance simulation tool based on teleconverter

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.
Owner:JINAN RUOLIN VIDEO TECH CO LTD

Full-automatic four-station periscopic AA equipment

PendingCN121750967AWhiteboardControl system
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.
Owner:SHENZHEN ZHONGKE PRECISION TECH CO LTD

A motor testing method and system

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.
Owner:SHENGTAI (XINYU) ELECTRONIC IND CO LTD

Phase shift detection automatic focusing device and method modulated by double wedge-shaped plates

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.
Owner:XIDIAN UNIV HANGZHOU RES INST +1

Optical zoom lens performance test fixture

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.
Owner:CHONGQING TIANSHI PRECISION TECH CO LTD

Zoom lens and image capturing device

To provide a compact, high-performance zoom lens which allows an extender group to be inserted therein.SOLUTION: A zoom lens provided herein comprises a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power, arranged in order from the object side to the image side, and is configured such that distances between adjacent lens groups change while zooming. The zoom lens further comprises an extender group configured to be inserted to or removed from the light path to change the focal length of the zoom lens. The zoom lens satisfies given conditional expressions regarding; a focal length f1 of the first lens group; a focal length ft of the zoom lens at the telephoto end; an optical axial distance D from a final lens group located on the most image side to a lens group next to the final lens group when focused at infinity at the telephoto end; an optical axial distance TL from a lens surface on the most object side to the image plane when focused at infinity at the telephoto end; a focal length f3 of the third lens group; and a focal length f4 of the fourth lens group.SELECTED DRAWING: Figure 1
Owner:CANON KK

A focus position detection device for an infrared imaging device

The application relates to a focusing position detection device of an infrared imaging device, which comprises a mounting frame, a temperature-controlled target with a temperature-controlled target surface that can be heated and faces the ground, a depth-of-field test target with a depth-of-field test target surface and a far-view target element and a near-view target element, a tool module for clamping the infrared imaging device, a focusing module for adjusting the imaging focal length of a lens, and a host computer for solving the depth-of-field test target image to obtain an MTF value. The target surfaces of the temperature-controlled target and the depth-of-field test target are arranged downward and away from the workbench, so that natural dust prevention is achieved, the interference of the heat radiation of the workbench is reduced, the position of the extender lens and the height of the depth-of-field test target can be adjusted, the host computer can automatically solve the MTF value according to the depth-of-field test target image, and therefore the far-near depth-of-field focusing capability test of the infrared imaging device can be completed at the same time of single imaging.
Owner:WUHAN GAOXIN TECH

Teleconverter anti-shake method and device, electronic equipment, storage medium and program product

PendingCN121728351ASoftware engineeringGain
The invention relates to a teleconverter anti-shake method and device, electronic equipment, a storage medium and a program product. The method comprises the following steps: acquiring an angular velocity sequence of the electronic equipment in a shooting process; the angular velocity sequence comprises an angular velocity at the current moment and angular velocities at a plurality of historical moments before the current moment; based on the angular velocity sequence, determining a target jitter frequency and a target jitter angle corresponding to the next moment of the current moment; determining a target gain corresponding to the target jitter frequency and the target jitter angle based on a corresponding relationship among the reference jitter frequency, the reference jitter angle and the reference gain; and carrying out optical image stabilization on a teleconverter in the electronic equipment based on the target gain. By adopting the method, the anti-shake effect of the teleconverter can be improved.
Owner:GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

Zoom lens, extender, and image pickup apparatus

To provide a zoom lens capable of easily changing a focal distance range to a long focal distance side by an extender, having a large diameter capable of excellently maintaining optical performance before and after the extender is inserted, and having a long focal distance.SOLUTION: A zoom lens consists of, in order from an object side, first and second lens groups having positive and negative refractive power and a rear group including a plurality of lens groups. The distance between adjacent lens groups is changed during zooming. The rear group includes an aperture diaphragm, an n-th lens group closest to an image and having positive refractive power, and a (n-1)-th lens group on the object side of the n-th lens group and having negative refractive power. Focal distances of the (n-1)-th and the n-th lens groups, and a distance on an optical axis from the surface closest to the image of the (n-1)-th lens group to the surface closest to the object side of the n-th lens group and a distance on the optical axis from the aperture diaphragm to the surface of the image in a zoom position where a distance on the optical axis from a surface closest to the image of the (n-1)-th lens group to a surface closest to the object side of the n-th lens group becomes the shortest in an entire zoom range are set respectively and appropriately.SELECTED DRAWING: Figure 1
Owner:CANON KK

Lens barrel and camera equipped with same

A lens barrel (10) comprises a lens mount (23), a fifth lens group unit (17), a cam frame (13), a cam pin (17c), a cam pin holder (17b), a main shaft (17g), and an urging spring (17f). The cam frame 13 encloses the fifth lens group unit 17, and has a cam groove 13a. The cam pin 17c moves in the optical axis direction in a state of being engaged with the cam groove 13a. The cam pin holder 17b is provided to the fifth lens group unit 17 in a state of being capable of relative motion in the optical axis direction, and holds the cam pin 17c. The main shaft 17g allows the fifth lens group unit 17 to move in the optical axis direction. The urging spring 17f is provided to the fifth lens group unit 17, urges the cam pin holder 17b toward the subject side in the optical axis direction, and contracts when the teleconverter 30 is mounted to the lens mount 23 to retract the fifth lens group unit 17 in the optical axis direction.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Teleconverter

The invention discloses a teleconverter, and relates to the technical field of optical lenses, the teleconverter is composed of a first lens, a second lens, a third lens and a fourth lens, and the first lens, the second lens, the third lens and the fourth lens are sequentially arranged along an optical axis from an object side to an image side; the first lens has positive focal power, the second lens has negative focal power, the third lens has positive focal power, and the fourth lens has negative focal power; the first lens and the second lens are arranged at intervals, the second lens and the third lens form a bonded lens, and the third lens and the fourth lens are arranged at intervals. The teleconverter disclosed by the invention can be matched with various focal lengths and can meet the use of more lenses.
Owner:HUNAN CHIOPT OPTICAL TECH

Camera module detection device and detection system thereof

A camera module detection device comprises a detection box, a Chart graph, a light-emitting plate, a sliding rail assembly, a teleconverter, a rotary sliding table and a test box. The interior of the detection box is of a hollow structure, the sliding rail assembly is arranged on the left side of the interior of the detection box, the teleconverter is arranged on the right side of the interior of the detection box, and the rotary sliding table is arranged at the bottom of the outer wall of the right side of the detection box; a camera module used for detection is arranged in an inner cavity of the test box, and the test box is placed on the top of the rotary sliding table. According to the camera module detection device and the detection system thereof, through the structural design of the sliding rail assembly designed in the detection box, the fixing frame and the light-emitting plate, a worker can fix a Chart picture between the fixing frame and the light-emitting plate, and the design can enable the test box, the Chart picture and the teleconverter to be in a horizontal state; therefore, the detection device can realize horizontal testing.
Owner:TRULY OPTO ELECTRONICS

Detection method and detection system for field angle of camera

The invention discloses a camera field angle detection method and detection system, and the method comprises the following steps: controlling a camera module to shoot a target under a fixed shooting distance to obtain an original image, the target comprising a plurality of black and white grids; performing interpolation processing on the original image, and cutting the image after interpolation processing to obtain an image of a central calculation area; processing the image of the central calculation area and calculating a side length pixel value of a black-and-white grid in the image of the central calculation area; and calculating the field angle of the camera based on the pixel value of the side length of the black and white grid, the physical side length of the black and white grid, the pixel value of the chip, the shooting distance and the reciprocal of the magnification of the teleconverter, wherein the chip is an image sensor chip. Existing stations of a production line can be reused, targets in an existing test environment are directly utilized, independent targets do not need to be additionally built, equipment redundancy is avoided, and the detection cost can be remarkably reduced.
Owner:JIANGXI SHENGTAI PRECISION OPTICS CO LTD

SFR detection equipment

The invention relates to the field of SFR detection, and particularly discloses SFR detection equipment, an X-axis guide rod of a horizontal moving mechanism is fixed on a first flat plate, a Y-axis guide rod is fixed on a second flat plate, the second flat plate is connected to the X-axis guide rod in a sliding mode through a sliding block in the X direction, and a third flat plate is connected to the Y-axis guide rod in a sliding mode through a sliding block in the Y direction. The rotating mechanism comprises a sliding table fixing base and a rotating sliding table which are rotationally connected in the Z direction, and the sliding table fixing base is fixed to the third flat plate. The module mounting mechanism is fixed on the rotary sliding table, and the module mounting mechanism is used for mounting and fixing a to-be-tested camera module. The teleconverter mounting mechanism comprises a supporting plate, a Z-axis guide rod and a teleconverter lens, the supporting plate is located over the second flat plate in the Z direction, one end of the Z-axis guide rod is fixed to the second flat plate, the other end of the Z-axis guide rod is fixed to the supporting plate, and the teleconverter lens is connected to the Z-axis guide rod, so that the SFR detection equipment is simple in structure, and the to-be-detected camera module arranged on the SFR detection equipment is convenient to adjust.
Owner:HEFEI LIANCHUANG OPTICAL CO LTD