24 results about "Pentaprism" patented technology

The invention belongs to the technical field of telescope manufacturing, and discloses a large-view-field telescope optical system which is characterized in that a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentaprism, a roof prism, a first eyepiece lens, a second eyepiece lens and a third eyepiece lens are sequentially designed from the object side to the image side in the optical axis direction. According to the optical system, only the ten lenses have diopters, the requirement for the field of view of 6.7 degrees under the 8-fold condition is met, and the exit pupil distance reaches 22.6 mm.

A penta prism collimator having four freeform surfaces that fold the optical path of light received from a microdisplay collimates light for coupling to a waveguide. In some embodiments, the freeform surfaces are toroidal surfaces made from a single injection-molded element, such as a single piece of plastic. The freeform surfaces collimate the light at a variety of distances from an input pupil of a waveguide, allowing for more freedom of placement within a frame of a WHUD.

An optical system of binoculars includes a first object biconvex lens of positive focal power, a second object meniscus lens of negative focal power, a third object meniscus lens of positive focal power, a fourth object meniscus lens of negative focal power, a half pentaprism, a roof prism, a first eyepiece biconcave lens of negative focal power, a second eyepiece biconvex lens of positive focal power, a third eyepiece biconvex lens of positive focal power, a fourth eyepiece meniscus lens of negative focal power, and a fifth eyepiece meniscus lens of positive focal power. These are sequentially arranged along an optical axis direction from an object side to an observation side. When focusing, the fourth object lens moves along the optical axis direction. The binoculars include an exit pupil diameter range of 3.5 mm-4.5 mm, an exit pupil distance range of 15-18 mm, and a field angle range of 6°-6.5°.

The invention belongs to the technical field of telescope manufacturing, and discloses a small-caliber large-view-field telescope optical system which is characterized in that an objective lens first lens, an objective lens second lens, an objective lens third lens, a focusing lens, a semi-pentaprism, a roof prism, an eyepiece first lens, an eyepiece second lens and an eyepiece third lens are sequentially arranged from the object side to the image side in the optical axis direction. According to the optical system, a large field of view of 6.7 degrees can be realized under the condition of 10 times.

A reimaging lens assembly includes a pentaprismatic optic that includes two reflective surfaces and two refractive surfaces. The reflective surfaces are powered surfaces, and the reflective surfaces may be spherical, aspherical, and / or freeform reflective surfaces. The pentaprismatic optic may receive light from a wide field of view (WFOV), and may change the angle of the output light from that of the input light, for example by 90 degrees. The pentaprismatic optic may be coupled to an image receiver, such as a cooled or uncooled camera. The reimaging lens assembly may include further optical elements between the pentaprismatic optic and the image receiver, such as one or more lenses, filters, and / or cold stops. The lens assembly provides a compact system, with a small number of optical elements, and with desensitized output that reduces image jitter.

The application belongs to the technical field of telescope manufacturing, and discloses a small-caliber large-view-field telescope optical system, characterized in that: from the object side to the image side along the optical axis direction, an objective lens first lens, an objective lens second lens, an objective lens third lens, a focusing mirror, a half-pentagonal prism, a ridge prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens, an eyepiece fourth lens, an eyepiece fifth lens and an eyepiece sixth lens are sequentially arranged; and the optical system realizes a large view field of 6.7° under 10 times.

The application relates to a quantitative detection method and quantitative detection equipment of orthogonality; the quantitative detection method of orthogonality in the application can realize the calibration of the orthogonality index by making the detection light path parallel to the pumping light path after being folded by 90 degrees through a five-prism, and enabling two originally spatially orthogonal light beams to be observed and measured on the same collection assembly, thereby providing a standardized quantitative basis for the accurate implementation, quantitative evaluation and long-term maintenance of the high-precision spatial orthogonality of the pumping light path and the detection light path of the double-beam magnetometer.

The application discloses a kind of two-dimensional guide rail straightness and perpendicularity testing device, comprising: X-axis guide rail, one end of the X-axis guide rail is fixedly connected with X-axis motor, the output end of the X-axis motor is fixedly connected with X-axis screw rod, and X-axis sliding block is threadedly sleeved on the X-axis screw rod;Y-axis guide rail, the Y-axis guide rail is vertically arranged with X-axis guide rail, one end of the Y-axis guide rail is fixedly connected with Y-axis motor, the output end of the Y-axis motor is fixedly connected with Y-axis screw rod, and Y-axis sliding block is threadedly sleeved on the Y-axis screw rod;Five-prism, the five-prism is fixedly connected with the top of X-axis sliding block;Photoelectric phase-sensitive sensor, laser and multidimensional adjusting mechanism.The application can quickly and accurately test the straightness and perpendicularity of two-dimensional guide rail by the setting of multidimensional adjusting mechanism, five-prism and photoelectric phase-sensitive sensor etc., to improve the testing efficiency of the straightness and perpendicularity of two-dimensional guide rail.

The invention discloses a laser demarcation device calibration system and method, and belongs to the technical field of laser demarcation device calibration, the laser demarcation device calibration system comprises a standard horizontal line camera group, a standard contour line camera group, a standard plumb line camera group and a four-dimensional workbench, the standard horizontal line camera group comprises a third CCD camera and a sixth CCD camera, the standard contour line camera group comprises a first CCD camera and a fourth CCD camera, the standard plumb line camera group comprises a second CCD camera and a fifth CCD camera, the first CCD camera, the third CCD camera, the fourth CCD camera and the sixth CCD camera are located in the same horizontal plane, and the second CCD camera, the fourth CCD camera and the fifth CCD camera are located on the same plumb line; the four-dimensional workbench comprises a base table, a height lifting assembly, a two-dimensional inclination assembly, a rotation assembly and a pentaprism. According to the invention, not only is the measurement accuracy of the laser demarcation device improved, but also the calibration work efficiency of the laser demarcation device is improved.

The invention discloses a high-precision stability test system and method for a right-angle prism device, and solves the problems that a method for testing the stability of a prism and an external mechanical structural member in an existing right-angle prism device is low in test precision and test efficiency and is not suitable for an environmental test. The device specifically comprises a rectangular frame, a plane reflection unit arranged on the inner bottom surface of the rectangular frame, a pentaprism unit arranged on the top surface of the rectangular frame, and an auto-collimation theodolite arranged on one side of the rectangular frame, the plane reflection unit comprises a plane reflection mirror which is horizontally arranged upwards, a grinding surface is arranged on the plane reflection unit, the plane reflection unit is used for placing a rectangular prism device to be measured, and the side surface of the rectangular prism device to be measured is tightly attached to the grinding surface; the top of the rectangular frame is provided with a frame light through hole corresponding to the plane mirror. A light outlet of the pentaprism unit corresponds to the light through hole of the frame; and the center height of the auto-collimation theodolite corresponds to the light inlet of the pentaprism unit.

The utility model discloses a telescope optical system with a long exit pupil distance, which is characterized in that a first objective lens, a second objective lens, a focusing lens, a semi-pentaprism, a roof prism, a first eyepiece lens, a second eyepiece lens, a third eyepiece lens and a fourth eyepiece lens are sequentially arranged from an object side to an image side along the direction of an optical axis, the first objective lens is a biconvex lens, the second objective lens is a biconcave lens, the first objective lens and the second objective lens form a balsaming lens, the focusing lens is a concave-convex lens, the convex surface faces the object side, the first ocular lens is a biconcave lens, the second ocular lens is a biconvex lens, and the focusing lens is a concave-convex lens. The first eyepiece lens and the second eyepiece lens form a balsaming lens, the third eyepiece lens is a biconvex lens, the fourth eyepiece lens is a concave-convex lens, and the convex surface faces the object side.

The application provides a collimator adjusting device and system, wherein the collimator adjusting device comprises a carrier, a laser theodolite, a five-prism and a focus-adjustable image analyzer which are detachably arranged on the carrier; during operation, the laser theodolite provides horizontal calibration parallel light, the calibration parallel light is sequentially converged by an off-axis parabolic mirror of a collimator to be adjusted and a plane mirror, and then converged on a target generator target, so as to assist in adjusting the height of a reference axis of the collimator to be adjusted; the five-prism is arranged between the laser theodolite and the off-axis parabolic mirror along the arc and vector direction of the collimator and reciprocally slides horizontally, so that the outgoing light of the collimator to be adjusted is deflected by 90 degrees; and the focus-adjustable image analyzer is used for receiving the outgoing light deflected by the five-prism, so as to assist in adjusting the collimation accuracy of the collimator to be adjusted. The application is suitable for high-precision adjusting scenes of various customized reflective collimators, and has simple structure and convenient production, which is beneficial to cost reduction and efficiency increase of enterprises.

The invention discloses an installation and adjustment method and system for a double-grating spectrum beam combining system with multiple reflectors, and the method comprises the following steps: firstly, building and transmitting an installation and adjustment reference through a theodolite and a pentaprism, and sequentially and serially installing and adjusting the reflectors and a first grating of a first half optical path based on a preset geometrical relationship; then, rebuilding a reference, and installing and adjusting the second reflection grating by adopting a mode of combining an auto-collimation method and a positioning tool; and finally, establishing a focusing detection light path based on a short-focus positive lens and a reticle, adjusting the pointing direction of a collimating lens by observing the stability of the position of a focusing light spot along with the translation of the reticle, and adjusting the collimation degree by observing the minimization of an out-of-focus light spot. According to the invention, high-precision and high-efficiency adjustment of a multi-reflector and double-grating structure is realized, and the light beam quality and the adjustment consistency of the spectrum beam combining system are remarkably improved.

The application relates to the technical field of calibration, and discloses a rapid target calibration system which comprises a laser transmitter, a laser receiver, a prism, an information processor, a mounting frame and an electronic level, the laser transmitter is arranged at the top end of the mounting frame, the laser transmitter is a laser transmitter which can rotate and is internally provided with a five-prism laser emitting head, the prism is arranged at the top end of another mounting frame, and the laser receiving device is fixed at the two ends of a measured device through magnetic bases; three motors are simultaneously started to drive the threaded rods to rotate, the threaded rods are used to drive the telescopic rods to move along the inner wall of the mounting rod so that the top plate is moved to a proper height, the horizontal detection device is used to determine whether the top plate is horizontal, the three motors are respectively adjusted to make the top plate horizontal, the stability of the equipment and the accuracy of data are improved, the work efficiency is improved, the target calibration work has no special requirement for the site, and a helicopter can be freely parked.

Provided is an optical module wherein a first prism is composed of a dichroic pentaprism that receives incident light on an incident surface and has five sides, at least a part of the incident light is reflected twice on a first side surface and a second side surface in the first prism, is emitted from an emission surface of the first prism, and is incident on a first imaging element, the first imaging element converts the incident light flux into an electric signal and extracts the electric signal as a first optical image, the incident light on the incident surface and the emission light from the emission surface are configured to be perpendicular to each other, a second prism receives transmitted light which is the other at least part of the incident light and is transmitted through a selected side surface of the first side surface or the second side surface in the first prism, and emitted from an emission surface of the second prism and made incident on a second imaging element, the second imaging element is configured to convert the incident light flux into an electric signal and extract the electric signal as a second optical image, and the first prism, the first imaging element, the second prism, and the second imaging element are integrated and arranged at the tip of a search scope.

This utility model relates to the field of telescope technology and discloses a magnetically attached binocular telescope, including a telescope body and a movable cap. The telescope body has a central axis in the middle, a first magnetic block fixed at the top of the central axis, a second magnetic block at the bottom of the movable cap, and a buffer layer at the top of the movable cap. Inside the telescope body, from the object side to the image side, are arranged a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentagonal prism, a roof prism, a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens, a fifth eyepiece lens, and a sixth eyepiece lens, which can effectively reduce the pressure of the telescope eyepieces on the observer's eyes.

This invention discloses an optical system for an optically stabilized telescope with a field-planing lens, belonging to the field of optical lens technology. It includes an objective lens group GR1, a prism group GR2, a field-planing lens group GR3, and an eyepiece group GR4. The objective lens group GR1 includes a first objective lens G1, a second objective lens G2, a third objective lens G3, a focusing lens G4, and a field-stabilizing lens G5. The prism group includes a semi-pentaprism G6 and a roof prism G7. The field-planing lens group includes a first field-planing lens G8 and a second field-planing lens G9. The eyepiece group includes a first eyepiece lens G10, a second eyepiece lens G11, a third eyepiece lens G12, and a fourth eyepiece lens G13. This invention achieves focusing on targets at different distances by adjusting the focusing lens G4. Utilizing gyroscope feedback, the field-stabilizing lens G5 compensates for image shake caused by telescope jitter by translation, stabilizing the target originally in the center of the field of view. This allows the observer to quickly and stably observe, improving observation quality.

The application relates to a laser ranging scope and a use method thereof, which comprises, coaxially and sequentially, an objective lens, a transmitting beam splitter, a small objective lens, a half-pentaprism, a beam splitter prism, a roof prism, a graticule, an ocular group, a laser transmitting unit and a laser receiving unit; after light is split by the half-pentaprism, one route of white light is emitted out of the ocular group for human eye observation and aiming, and the other route of white light is used for image acquisition; the laser transmitting unit comprises a laser transmitter, a laser beam emitted by the laser transmitter is transmitted into the edge light transmission area of the objective lens through the transmitting beam splitter, is collimated through the objective lens and is shot towards a target to be measured, the reflected laser echo is reversely transmitted, is split by the beam splitter prism and is incident to the laser receiving unit, distance measurement operation is completed by a photoelectric sensor and a signal processing circuit integrated in the laser receiving unit, and the obtained distance measurement information is displayed through a liquid crystal screen. The application builds a white light imaging light path and a laser transmitting and receiving light path by means of existing optical components, the overall layout is reasonable and compact, and aiming and rapid distance measurement can be considered.

The application provides a precision in-situ detection and adjustment system for an inner cavity of a quality frame, and belongs to the technical field of precision machining and measurement. The five-prism device comprises a five-prism, the five-prism comprises a first incident surface, a first exit surface adjacent to the first incident surface, a first shielding surface, and two side surfaces; the included angle between the first incident surface and the first exit surface is 90°, and the included angle between the adjacent side surfaces of the inner cavity of the quality frame to be detected is also 90°; the first shielding surface is provided with a first light shielding device. During the detection process, the five-prism device is arranged in the cavity of the quality frame, and is arranged on a first base together with the quality frame; the autocollimator is aligned with the first incident surface; the parallel light emitted by the autocollimator is transmitted from the first incident surface through the first side surface, is deflected by 90°, is emitted from the first exit surface, and acts on the second side surface in the form of a crosshair to determine the perpendicularity error between the first side surface and the second side surface.

This invention belongs to the field of telescope manufacturing technology and discloses a binocular optical system with a large field of view and low edge distortion. Its features include: a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentagonal prism, a roof prism, a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens, a fifth eyepiece lens, and a sixth eyepiece lens arranged sequentially from the object side to the image side along the optical axis. The telescope optical system has a magnification of 8x, an exit pupil distance of 20.90mm, an exit pupil diameter of 5.037mm, and a field of view of 9°.

The application provides a compact short-wave infrared optical lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a prism, a fifth lens and a sixth lens arranged in sequence along the direction from the object side to the image side; the prism comprises a half-pentaprism and an isosceles prism; the object side and the image side of the first lens are both provided with a convex structure; the object side of the second lens is provided with a concave structure, and the image side is provided with a concave structure; the object side of the third lens is provided with a convex structure, and the image side is provided with a concave structure; the object side of the fourth lens is provided with a concave structure, and the image side is provided with a plane structure; the object side of the fifth lens is provided with a concave structure, and the image side is provided with a plane structure; the object side of the sixth lens is provided with a plane structure, and the image side is provided with a convex structure; the light from the object side is reflected five times in the prism, of which three times are total reflection and twice are internal reflection, so as to fold the optical path. The compact short-wave infrared optical lens is compact and small in size.

The utility model discloses a light beam separating device based on half pentaprisms, which relates to the technical field of light beam separating devices, and comprises a shell, a first half pentaprism and a second half pentaprism are arranged in the shell, the first half pentaprism is positioned above the second half pentaprism, and the second half pentaprism is positioned above the first half pentaprism. A sliding gap for a coated sheet to pass through is formed between the first half pentaprism and the second half pentaprism, and a coated sheet box is fixedly connected in the square groove. According to the light beam separation device based on the half pentaprisms, the first half pentaprism, the second half pentaprism, the sliding gap and other structures are arranged, beam splitting or combination of light paths of different wave bands can be easily achieved by matching with different coated sheets, the universality is improved, and therefore the manufacturing cost is saved, meanwhile, the coated sheets are wiped through the cleaning roller, the cleaning effect is achieved, and the working efficiency is improved. And after entering the sliding gap, the coated sheet cannot slide randomly under the extrusion action of the cleaning roller, so that the positioning effect is realized, and the use stability is ensured.

The application discloses a wide-angle three-dimensional anti-scanning cold-type middle-wave infrared optical system, which comprises, in sequence from an object side to an image side, an azimuth-elevation scanning group, a main objective lens group, a horizontal roll scanning group and a relay group; the main objective lens group comprises four lenses, namely a single-crystal germanium lens with negative focal power, a single-crystal silicon lens with negative focal power, a single-crystal silicon lens with positive focal power and a single-crystal germanium lens with positive focal power; the horizontal roll scanning group comprises a half-penta prism and a Schmidt prism; the horizontal roll scanning group is used for eliminating image rotation introduced by azimuth scanning of the azimuth-elevation scanning group and completing horizontal roll scanning; in a clockwise direction, a first working surface of the half-penta prism and a second working surface of the Schmidt prism are perpendicular to an optical path; the relay group comprises three lenses, namely a single-crystal germanium lens with negative focal power, a single-crystal silicon lens with positive focal power and a single-crystal silicon lens with negative focal power. The application realizes 100% cold-stop efficiency, has small volume and weight, simple and stable structure and excellent thermal insensitivity.

The utility model discloses an optical system of an optical anti-shake telescope. An objective lens group, a prism group and an eyepiece group are sequentially arranged from an object side to an image side along the direction of an optical axis. Wherein the objective lens group comprises a first objective lens, a second objective lens, a third objective lens, a focusing lens and an anti-shake lens; the prism group comprises a half pentaprism and a roof prism; the eyepiece group comprises a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens and a fifth eyepiece lens; target focusing at different distances is achieved by adjusting the focusing lens, when the anti-shake function is started, the anti-shake lens still stabilizes a target which is originally located in the center of a view field at the center of the view field according to sensing of the gyroscope, and by reasonably distributing focal power and aberration of all the lenses, the anti-shake function is achieved. The anti-shake lens compensates picture shake caused by telescope shake through translation, so that an observer can quickly and stably observe, and the observation quality is improved.