53results about How to "Easy to adjust focus" patented technology

A photographing device is disclosed. The photographing device includes a display configured to display live view of a subject, a focus adjuster configured to adjust a focus in a manual focus mode according to a user manipulation, a focus calculator configured to automatically calculate a target focus which corresponds to the subject, and a controller configured to display a manual focus guide including a first indicator indicating a current focus and a second indicator indicating the target focus on the display, and in response to the focus being adjusted by the user manipulation, change location of the first indicator within the manual focus guide according to the adjustment state.

Provided is an electrostatic lens array, including multiple substrates arranged with intervals, each of the multiple substrates having an aperture for passing a charged particle beam, in which: in a travelling direction of the charged particle beam, a peripheral contour line formed by any one of surfaces of the multiple substrates other than an upper surface of a most upstream substrate and a lower surface of a most downstream substrate has a protruding portion protruding from a peripheral contour line of one of the upper surface of the most upstream substrate and the lower surface of the most downstream substrate; and a position of the protruding portion is defined by a position regulating member, whereby parallelism is adjustable so that a surface including the protruding portion is parallel to a surface to be irradiated with the charged particle beam after passing through the aperture.

This invention provides a focal point regulating method and focal point regulating device in a camera device. In the camera, when a camera lens is moved at am optical axis direction to regulate a focusing position, the focusing position can be easily regulated with high precision even if the peak points of the picked contrast feature and MTF feature are unclear. A first and second test charts (CH1, CH2) each having an imaging pattern defined by white color and black color are set in front and rear of the target position (P) of an object, a focus lens (3) is moved in the direction of optical axis X, focal point evaluation value of the imaging pattern focused on an image element (5) is determined for each of the first and second test charts (CH1, CH2) in correspondence with the movement quantity of the focus lens (3), and the position of the focus lens (3) is set such that the focal point evaluation value in the first test chart (CH1) coincides with the focal point evaluation value in the second test chart (CH2).

The invention provides a portable three-dimensional visual photoacoustic imaging system, which comprises a central processing unit, a driving circuit, a data acquisition circuit, a signal amplification circuit, a signal pre-processing circuit, an ultrasonic sensor, an external circuit interface, laser diodes, a collimating lens group, a beam expanding lens group, a focusing lens group, an X-axis reflecting galvanometer, a Y-axis reflecting galvanometer, a field lens, a linear motor, an X-axis motor, a Y-axis motor and a shell. Fast and efficient three-axis scanning galvanometer technology is applied to the field of photoacoustic stimulation. The portable three-dimensional visual photoacoustic imaging system is integrated with the laser diodes, so that portable three-dimensional visual photoacoustic imaging can be realized. Besides, the portable three-dimensional visual photoacoustic imaging system can be widely applied to the field of material detection, industrial flaw detection, medical imaging and the like of complex structures such as square structures, tubular structure, film type structures and the like.

The invention discloses a method and device for engraving a three-dimensional image on glass with a regular cambered surface. The method includes the process of using a laser focusing method for forming a damage point in the glass with the regular cambered surface and the process of moving a laser focusing point in the glass with the regular cambered surface, wherein the distance between the glass and the laser focusing point is adjustable, the laser focusing point engraves different regions in the circumferential direction of the glass by means of rotation of the glass, and the laser focusing point moves up and down to engrave different regions in the length direction of the glass; the engraving process is finished through the corresponding device according to the method. Three-dimensional image engraving on drum-shaped or cylindrical glass can be finished, three-dimensional image engraving has wider development space, and the requirement for market diversification is met.

The invention provides an illuminating device and is applicable to the technical field of illuminating devices. The illuminating device comprises an electrical cabinet, a light reflecting cup and a luminous component, one end of the light reflecting cup is provided with a transparent piece and a first hemming portion which is used for compressing the transparent piece, and the luminous component is arranged in the light reflecting cup which is arranged on the electrical cabinet; the other end of the light reflecting cup is provided with a fixing ring and a second hemming portion which is used for compressing the fixing ring; at least two protrusion portions are protruded on the side surface of the fixing ring along the radial direction, and a snapping component which can act on the protrusion portions is arranged on the electrical cabinet; and a rope component is connected with the electrical cabinet and connected with a hang ceiling installation fastening assembly. The illuminating device is good in seal performance and product reliability and convenient to install and maintain.

Provided is an electrostatic lens array, including multiple substrates arranged with intervals, each of the multiple substrates having an aperture for passing a charged particle beam, in which: in a travelling direction of the charged particle beam, a peripheral contour line formed by any one of surfaces of the multiple substrates other than an upper surface of a most upstream substrate and a lower surface of a most downstream substrate has a protruding portion protruding from a peripheral contour line of one of the upper surface of the most upstream substrate and the lower surface of the most downstream substrate; and a position of the protruding portion is defined by a position regulating member, whereby parallelism is adjustable so that a surface including the protruding portion is parallel to a surface to be irradiated with the charged particle beam after passing through the aperture.

A monitoring lens apparatus is provided and includes a fixed cylinder, a first lens frame provided at an inner portion of the fixed cylinder and movable in an optical axis direction, a second lens frame provided at the inner portion of the fixed cylinder and movable in the optical axis direction, a first ring provided rotatably to the fixed cylinder and provided with a cam groove for driving the first lens frame, a second ring provided rotatably to the fixed cylinder on an object side of the first ring and provided with a cam groove for driving the second lens frame, and an extended portion provided integrally with the first ring and extended to the object side to cover an outer periphery of the second ring.

The present invention relates to a variable magnification device and a telescopic sight using the same, and more particularly, to a variable magnification device which is capable of easily adjusting a magnification of a telescopic sight. The variable magnification device includes: a rotation bunch which has a ring shape conforming to the circumference of a barrel of a telescopic sight and includes a bent end formed on one side of the circumference of the rotation bunch; and a rod which is connected to the bent end and is bendable in the longitudinal direction of the barrel. The magnification of the telescopic sight can be adjusted with an aiming posture maintained, thereby allowing immediate hit on a target. In addition, a leverage effect can be used to easily and finely adjust the magnification of the telescopic sight with one hand, thereby preventing distortion of an aiming posture as maximally as possible.

The invention discloses VR glasses convenient to carry and use. The VR glasses comprise a mounting base, wherein lens mounting through holes are symmetrically formed at a side surface of the mountingbase in a penetrating mode, a clamping limiting groove is formed at the other side surface of the lens mounting through hole, a focal length adjusting assembly is arranged on an inner side of the lensmounting through hole, the focal length adjusting assembly is movably connected with the mounting base, a mobile phone clamping mechanism is arranged on an inner side of a clamping limiting groove, the mobile phone clamping mechanism is fixedly connected with the mounting base in an inserted mode, the mobile phone clamping mechanism comprises a base, clamping pieces and adjusting pieces, the clamping pieces are symmetrically arranged at two ends of the base, the clamping pieces are movably connected with the base in an inserted mode, and the adjusting pieces are arranged on the side surface of the base. The VR glasses are advantaged in that the VR glasses has characteristics of reasonable structure and convenience in use, a mobile phone can be quickly and stably clamped through the arranged mobile phone clamping mechanism, and the VR glasses are more convenient to carry due to the fact that special projection equipment does not need to be arranged.

The purpose of the present invention is to reduce the diameter of an endoscope objective optical system while facilitating focus adjustment and obtaining bright, wide-angle and high-definition image quality. The endoscope objective optical system (1) comprises, in order from the object-side, a front group (G1) having a negative refractive power, a brightness stop (S), and a rear group (G2) having a positive refractive power. The front group includes, in order from the object-side, a first lens (L1) which is a single lens having a negative refractive power and a second lens (L2) which is a single lens having a positive refractive power. The rear group (G2) includes a third lens (L3) which is a single lens having a positive refractive power, a cemented lens (CL1) created from a combination of a fourth lens (L4) having a positive refractive power and a fifth lens (L5) having a negative refractive power, and a sixth lens (L6) having a positive refractive power. The surface of the first lens facing the object is a flat surface, the second lens is meniscus-shaped, and the sixth lens is cemented to an imaging element. The endoscope objective optical system (1) satisfies the following conditional expression: 4 < Fno F6 / F1_5 < 500...(1) Where, Fno is the effective F-number of the endoscope objective optical system; F6 is the focal length of the sixth lens; and F1_5 is the composite focal length of the first to fifth lenses.

The invention discloses a visual microscope which comprises a base, a support, a display screen and an objective lens rotary plate. The support is arranged on the base and fixedly connected with the base. The display screen and the objective lens rotary plate are arranged on the support. An SD card slot and a USB interface are formed in one side of the display screen. A control button is arranged below the display screen. An objective lens is arranged below the objective lens rotary plate. The objective lens is connected with the objective lens rotary plate in a rotating mode. An illumination top lamp is arranged on one side of the objective lens rotary plate and fixedly connected with the support. An object table and an illumination bottom lamp are arranged below the objective lens. The illumination bottom lamp corresponds to the object table. The object table is horizontally arranged. The visual microscope is convenient to operate, good in display effect, clear in imaging and capable of storing images.

A vegetation coverage degree dynamic acquisition device consists of a camera, a camera holder, a camera fixed part, an engine compartment, a support (including a support base and a support measuring rod), a notebook computer, an engine compartment connecting line, and an engine compartment fixed component. The camera is arranged on the camera holder and is fixed by the camera fixed part; an lower end of the support measuring rod is connected with the support base, and the upper end of the support measuring rod is connected with the engine compartment fixed component; the engine compartment is arranged above the engine compartment fixed component, and is connected with the camera through the engine compartment connecting line; and the notebook computer is connected with the camera through a camera connecting line. The invention has the advantages of scientific design, simple structure, easiness for carrying, and efficient cohesion with supporting software. The camera is employed to substitute a digital camera hard for manipulation, and efficient cohesion with supporting software is realized through programs, thereby improving portability and universality of the device, and realizing bulk acquisition of photos of a quadrat and dynamic and real-time acquisition of vegetation coverage degree information during field operation.

Disclosed are a focus regulating apparatus for use with a projector and a projector using the same. The apparatus has a structure which is designed to overcome asymmetry in focus regulation due to the optical characteristics of the projector. The focus regulating apparatus of a projector includes: a focus regulator, which is provided in a projection lens unit of a projector main body so that the focus can be regulated by rotating a lens barrel of the projection lens unit; and an actuator, which gears with the focus regulator and moves rectilinearly with respect to the projector main body, thereby causing the focus regulator to rotate. The rotation of the focus regulator is varied when the actuator rectilinearly moves at a constant speed. The apparatus thus enables an asymmetry in focus regulation to be overcome when a screen size for the projector is adjusted.

A photographing device is disclosed. The photographing device includes a display configured to display live view of a subject, a focus adjuster configured to adjust a focus in a manual focus mode according to a user manipulation, a focus calculator configured to automatically calculate a target focus which corresponds to the subject, and a controller configured to display a manual focus guide including a first indicator indicating a current focus and a second indicator indicating the target focus on the display, and in response to the focus being adjusted by the user manipulation, change location of the first indicator within the manual focus guide according to the adjustment state.

The invention discloses a slide projection device. The slide projection device comprises a machine body (8), wherein the inner space of the machine body (8) comprises a storage area (82) for storing a plurality of slide assemblies (88) at the bottom, a focal length setting area (83) at the upper part and an opening area (81) in the front of the upper part; a light source (80) for projection is arranged at the rear end of the upper part of the machine body (8); each of the slide assemblies (88) comprises a fixed frame (7) as well as a lifting drive screw (51) and a lifting bracket (6) driven by the corresponding lifting drive screw (51) which are positioned on two sides of the corresponding fixed frame (7); a hook (70) for suspending a slide (871) is arranged on the upper top wall of each fixed frame (7); a magnet (872) is arranged on the lower bottom wall of each fixed frame (7); and the magnets (872) are used for being matched with iron sheets (873) at the bottom of the slides (871).

The invention discloses an automatic sealing machine, and belongs to the technical field of sealing machines. The automatic sealing machine comprises a lower frame, wherein an automatic feeding mechanism and a desktop sheet metal are connected to the lower frame; the automatic feeding mechanism mainly comprises a fixing frame; the fixing frame is respectively connected with an empty material traystoring frame, a full material tray storing frame, a transfer module and a transfer conveying module; the transfer module and the transfer bearing module are connected with the empty material tray storing frame and the full material tray storing frame; a turntable is connected with a jig; and the lower frame is further respectively connected with a PP cup detection station matched with the jig, aliquid injection station, an aluminum foil cutting and feeding station, an aluminum foil detection station, a heat sealing station and a laser engraving station. According to the automatic sealing machine, full-automatic control is adopted, an operator only needs to regularly take and place the material trays to collect finished products, so that the work intensity is low; the efficiency is high,and the quality is reliable; by adopting a servo module and a ball screw to drive, the positioning is more accurate, and the production efficiency is higher; and a peristaltic pump is adopted for liquid injection, so that the liquid injection is stable, and the flow control precision is high.

A camera device (1) includes an AF value calculating unit (14), a focus position determining unit (15), and an LED control unit (16). The AF value calculating unit (14) calculates an AF value from a camera image captured by an image imaging element (2). The focus position determining unit (15) determines a correct focus position based on the AF value. The LED control unit (16) controls light emission of an LED (13) provided in a main body (4) and indicates the correct focus position to a user. This allows to assist the user in focus adjustment by means of a light emitter provided in the main body. Thus, the camera device which allows the user by himself to adjust focus with ease without the help of others is provided.

The present invention relates to a variable magnification device and a telescopic sight using the same, and more particularly, to a variable magnification device which is capable of easily adjusting a magnification of a telescopic sight. The variable magnification device includes: a rotation bunch which has a ring shape conforming to the circumference of a barrel of a telescopic sight and includes a bent end formed on one side of the circumference of the rotation bunch; and a rod which is connected to the bent end and is bendable in the longitudinal direction of the barrel. The magnification of the telescopic sight can be adjusted with an aiming posture maintained, thereby allowing immediate hit on a target. In addition, a leverage effect can be used to easily and finely adjust the magnification of the telescopic sight with one hand, thereby preventing distortion of an aiming posture as maximally as possible.

The invention discloses an optical sight with a night viewing function. The optical sight comprises a mirror frame, an information analyzing device and a displayer; an infrared camera is arranged under an objective lens; a chute is formed in the top end of the middle part of the mirror frame; the information analyzing device is arranged above the chute; a battery box is arranged at the right end of the information analyzing device; an accumulator is mounted in the battery box; a control switch is arranged above the right side of the battery box; a focusing knob is arranged on the right side ofthe chute; the objective lens is arranged on the right side of the mirror frame; the displayer is arranged in front of the objective lens, and is connected to the objective lens through a hinge; theinfrared camera is mounted at the bottom of the left side for collecting environmental information at night; the information analyzing device is arranged at the top end of the middle part for processing information detected by the infrared camera; a permanent magnet is arranged at the bottom of the information analyzing device for replacing batteries; the displayer is arranged on the right side for conveniently seeing surrounding environments clearly; and the focusing knob is arranged on the right side of the chute for conveniently adjusting the focal distance of the infrared camera.

The invention relates to a VR helmet for immersive virtual clinical inquiry skill training. The VR helmet comprises VR glasses (1) and a VR head-mounted device (2) connected to the VR glasses (1). TheVR glasses (1) comprise a shell, and the shell comprises two oppositely arranged side shells (11), a front shell (12) connected to the front parts of the side shells (11), and an upper shell (13) connected to the upper parts of the side shells (11); wherein a first frame plate (1101), a second frame plate (1102) and a third frame plate (1103) are sequentially arranged in the shell, the first frame plate (1101) and the third frame plate (1103) are fixedly arranged, and an adjusting device of the second frame plate (1102) is connected to the first frame plate (1101); a lens (11032) is arrangedon the third frame plate (1103), a mobile device (300) is installed between the first frame plate (1101) and the front shell (12), through holes (11024) are formed in the first frame plate (1101) andthe second frame plate (1102), and the through holes (11024) correspond to the lens (11032). The invention can realize VR display.

An objective lens for an endoscope performs focusing from a farthest point object to a nearest point object by moving, along optical axis Z, at least one lens group excluding a most object-side lens group. The following conditional formulas (1) and (2) are satisfied: 1.2≰ft / fw  (1); and 0.0<(fm−fw) / (ft−fw)≰0.5  (2), where ft: a focal length of an entire system when the objective lens has been focused on the nearest point object, fw: a focal length of the entire system when the objective lens has been focused on the farthest point object, dt: an object distance to the nearest point object, dw: an object distance to the farthest point object, dm, which is represented by dm=(2×dw×dt) / (dw+dt): an object distance to a middle point object, and fm: a focal length of the entire system when the objective lens has been focused on the middle point object.

A camera device (1) comprises an AF value calculating unit (14), a focus position determining unit (15), and an LED control unit (16). The AF value calculating unit (14) calculates an AF value from a camera image captured by an image imaging element (2). The focus position determining unit (15) determines a correct focus position based on the AF value. The LED control unit (16) controls light emission of an LED (13) provided in a main body (4) and indicates the correct focus position to a user. This allows to assist the user in focus adjustment by means of a light emitter provided in the main body. Thus, the camera device which allows the user by himself to adjust focus with ease without the help of others is provided.

The invention discloses a slide projection device. The slide projection device comprises a machine body (8), wherein the inner space of the machine body (8) comprises a storage area (82) for storing a plurality of slide assemblies (88) at the bottom, a focal length setting area (83) at the upper part and an opening area (81) in the front of the upper part; a light source (80) for projection is arranged at the rear end of the upper part of the machine body (8); each of the slide assemblies (88) comprises a fixed frame (7) as well as a lifting drive screw (51) and a lifting bracket (6) driven by the corresponding lifting drive screw (51) which are positioned on two sides of the corresponding fixed frame (7); a hook (70) for suspending a slide (871) is arranged on the upper top wall of each fixed frame (7); a magnet (872) is arranged on the lower bottom wall of each fixed frame (7); and the magnets (872) are used for being matched with iron sheets (873) at the bottom of the slides (871).

The invention discloses a condensation-preventing ground buried lamp. A breathing cavity with an opening formed in the lower end is formed in the bottom of a main shell body of the ground buried lamp,the breathing cavity communicates with an inner cavity of the lamp through a breathing hole, and a breathing device consists of a head part and a threaded column; the head part is of a hexagonal cylindrical structure which is hollow inside, and a sided hole is formed in each of the six side faces of the head part; a thread is formed in the cylindrical surface of the threaded column, and a circular airway along the center of the cylinder is arranged in the threaded column; the circular airway is separated from the hollow part inside the head part through a breathing membrane; the breathing cavity is of a hexagonal structure and matched with the head part of the breathing device; the inner diameter of the breathing hole is matched with the threaded column, the head part of the breathing device is arranged in the breathing cavity, and the threaded column of the breathing device enters the inner cavity of the lamp by penetrating through the breathing hole and is fixed at the bottom of themain shell body through nuts; and a vertical groove is formed in each of the six side faces of the breathing cavity, and the opening of the lower end of the breathing cavity is covered by a steel net. The condensation-preventing ground buried lamp can prevent the breathing device from being blocked and damaged.

The invention discloses a focus-adjustable light condensing heating deicing device for power transformation equipment and a focus adjustment method. The device comprises a photon lamp mounting panel, wherein multiple photon lamps are mounted on the front of the photon lamp mounting panel; the photon lamp mounting panel comprises n same isosceles-trapezoid panels; the isosceles-trapezoid panel is formed by movably articulating more than or equal to three sections of sub-trapezoidal plates; n isosceles-trapezoid panels are independently arranged along the circumferential direction and form a regular n-polygon ring; a regular n-polygon plate center is embedded in an inner cavity of the regular n-polygon ring; the sub-trapezoidal plate on the innermost side of each isosceles-trapezoid panel is movably articulated with the plate center through a rotary connection shaft; and a focus adjustment mechanism is arranged on the back of the photon lamp mounting panel and used for automatically adjusting the sub-trapezoidal plates to rotate synchronously to focus the photon lamps. In the method, the curvature of the photon lamp mounting panel is changed by the focus adjustment mechanism, and the focus of the photon lamp changes along to adapt to the actual safe deicing distance. The light condensing focus can be automatically adjusted, and the power-on deicing need of equipment of different safe distances can be met.

The invention relates to a photoelectric detector with high bandwidth and high responsivity, which belongs to the field of semiconductor devices and comprises an InP substrate, and an InP isolation table, an N-type contact layer, an N-type InP layer, an InGaAs light absorption layer, a P-type InP layer and a P-type contact layer which are sequentially grown on the InP substrate, the device is characterized in that a first grating layer used for reflecting light emitted by the P-type contact layer to the InGaAs light absorption layer is arranged on the P-type contact layer, a second grating layer used for converging, transmitting and automatically coupling light beams is arranged on one side, back to the InP isolation platform, of the InP substrate, the second grating layer comprises a plurality of annular grating strips which are concentrically arranged, the diameter of the InGaAs light absorption layer is 5-10 m, and the diameter of the InGaAs light absorption layer is 5-10 m. And the thickness is 500 to 3000 nm. According to the invention, the PD bandwidth can be improved, and the PD responsivity can be improved and the PD light coupling difficulty can be reduced at the same time.

The invention discloses a laser marking machine provided with a light focusing groove. The laser marking machine comprises a base, a supporting column is arranged on the base, an adjusting shaft A isarranged on the supporting column, and the supporting column is connected with a laser cross beam through the adjusting shaft A. A laser is arranged on the laser cross beam, the laser comprises a laser generator, a light condensation cavity is connected to the front end of the laser generator, and the rear end of the laser generator is a total reflection mirror. An adjusting shaft B is arranged onthe supporting column, a workpiece groove is formed in the base, a guide rail is arranged on the workpiece groove, and the adjusting shaft B can adjust the relative positions of a workpiece and a laser beam. The laser marking machine provided with the light focusing groove can facilitate work of focal length adjusting of laser, and laser deviation caused by inaccuracy of manual laser focal lengthadjusting is reduced.

The invention discloses slide launching equipment which comprises a machine body (8), wherein the inner space of the machine body (8) comprises a storing area (82) for storing a plurality of slide components (88), an upper focal length adjusting area (83) and an opened area (81) at the front side of the upper part; a light source (80) for playing slides is mounted at the rear end of the upper part of the machine body (8); each of the plurality of slide components (88) comprises a fixing frame (7), a lifting driving screw rod (51) on two sides of the fixing frame (7), and a lifting support rack (6) driven by the lifting driving screw rod (51); a hook (70) for suspending a slide (871) is mounted on the upper top wall of the fixing frame (7); a magnet (872) is mounted on the lower bottom wall of the fixing frame (7); the magnet (872) is matched with an iron piece (873) at the bottom of the slide (871).

The invention relates to slide launching equipment. The slide launching equipment comprises a machine body (8), wherein an inner space of the machine body (8) comprises a storage area (82) used for storing a plurality of slide components (88), a focal length regulating area (83) at the upper part, and an opening area (81) on the front side of the upper part; wherein a light source (80) used for projecting is installed at the rear end of the upper part of the machine body (8), each of the slide components (88) comprises a fixing framework (7), lifting drive screws (51) located on the two sidesof the fixing framework (7) and a lifting bracket (6) driven by the lifting drive screws, a hook (70) used for suspending a slide (871) is installed on the upper top wall of the fixing framework (7),a magnet (872) is installed on the lower bottom wall of the fixing framework (7), and the magnet (872) is used for being matched with a sheet iron (873) at the bottom part of the slide (871).