51results about How to "Easy to adjust focus" patented technology

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.

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.

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.

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.

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 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 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).

A novel slide throw-in device comprises a machine body (8), wherein a storage region (82), a focus adjustment region (83) and an opening region (81) are arranged in an internal space of the machine body (8), the storage region (82) is arranged at a bottom part and is used for storing a plurality of slide assemblies (88), the focus adjustment region (83) is arranged at an upper part, the opening region (81) is arranged at a front side of the upper part, a light source (80) is arranged at a rear end of the upper part of the machine body (8) and is used for projection, each of the plurality of slide assemblies (88) comprises a fixed frame (7), lifting driving screw rods (81) and lifting supports (6), the lifting driving screw rods (51) are arranged at two sides of the fixed frame (7), the lifting supports (6) drive the lifting driving screw rods (51), a hook (70) is arranged on an upper top wall of the fixed frame (7) and is used for hanging a slide (871), and a magnet (872) is arranged on a lower bottom wall of the fixed frame (7) and is used for being matched with an iron sheet at a bottom part of the slide (871).

The invention discloses an adjustable focusing type illumination lamp based on curvature adjustment of a light gathering bowl; an upper lamp cylinder and a lower lamp cylinder of the illuminating lampare in threaded connection; a strip-shaped side hole is formed in the side wall of the upper lamp cylinder; a lead screw is arranged in the center of the bottom surface of a lamp stand; sliding chutes are formed in the inner wall of the upper lamp cylinder at intervals; the circumferential surface of the lamp stand is provided with protrusions at intervals; the lamp stand is arranged in the innercavity of the upper lamp cylinder and the protrusions are located in the sliding chutes; a focusing disc is screwed on the lead screw and is located at the position of the strip-shaped side hole; a lamp bead is arranged in the center of the top surface of the lamp stand; the bottom end of the elastic deformable light gathering bowl is connected with the top surface of the lamp stand and the lampbead is located in the center; the top surface of the elastic deformable light gathering bowl is provided with a flanging; the lampshade is connected with the top surface of the upper lamp cylinder through threads and the flanging is fixed between the lampshade and the top surface of the upper lamp cylinder; a rear cover is connected with the bottom surface of the lower lamp cylinder through threads; and a lithium battery is arranged in the inner cavity of the lower lamp cylinder and is connected with the lamp bead through a power switch. According to the illumination lamp in the invention, curvature adjustability of the light gathering bowl is realized, the light divergence and convergence range can be continuously controlled and improved, and multiple use of the illumination lamp is realized.