51 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.

The utility model discloses a binocular telescope. Comprising a first positive-focal-power biconvex objective lens, a second negative-focal-power meniscus objective lens, a third positive-focal-power meniscus objective lens, a fourth negative-focal-power meniscus objective lens, a semi-pentaprism, a roof prism and a first negative-focal-power biconcave objective lens which are sequentially arranged from the object side to the observation side in the optical axis direction. The first lens is a positive-power biconvex eyepiece lens, the second lens is a positive-power biconvex eyepiece lens, the third lens is a positive-power biconvex eyepiece lens, the fourth lens is a negative-power meniscus eyepiece lens, and the fifth lens is a positive-power meniscus eyepiece lens; during focusing, the objective fourth lens moves back and forth along the optical axis direction. The exit pupil diameter of the binocular telescope ranges from 3.5 mm to 4.5 mm, the exit pupil distance ranges from 15 mm to 18 mm, the field angle ranges from 6 degrees to 6.5 degrees, and the binocular telescope has the advantages of being high in resolution, small in chromatic aberration, small in size and light in weight.

The invention belongs to the technical field of optical adjustment of large-aperture telescopes, and particularly relates to a device and a method for in-situ measurement of optical axis errors of a large-aperture telescope in an external field. The method comprises the following steps: S1, roughly adjusting the four-dimensional adjusting base to enable the auto-collimation light pipe to be aligned with the center of a pitch axis of a to-be-measured piece; s2, rotating the pitch axis of the to-be-measured piece, and adjusting the angle inclination adjusting mechanism to enable the reflecting surface of the plane mirror to be perpendicular to the optical axis of the auto-collimation light pipe, and at the moment, enabling the optical axis of the auto-collimation light pipe to coincide with the pitch axis of the to-be-measured piece; s3, using the to-be-detected piece to track a natural star, when the natural star is located at the center of the detector target surface of the to-be-detected piece, rotating the rotatable pentaprism mechanism to enable the third window to be aligned with the natural star, and enabling the natural star to be imaged on the detector target surface of the auto-collimation light pipe and the detector target surface of the to-be-detected piece at the same time; and S4, calculating a visual axis error of the to-be-measured piece based on the imaging track of the natural star. According to the invention, the process can be simplified, the efficiency can be improved, and the large-aperture telescope optical axis difference can be measured in real time in an out-field on-site manner.

The invention discloses a pentaprism scanning wavefront detection device and method based on a pyramid interferogram. The device comprises a guide rail, a pentaprism, a beam splitter prism, a plane spectroscope, a cube-corner prism, an imaging lens and a CCD camera. The method comprises the following steps: firstly, building a measuring light path in front of a to-be-measured wave surface, ensuring that a guide rail is parallel to the to-be-measured wave surface, and obtaining an interference pattern formed by a light beam reflected by a plane spectroscope and a light beam reflected by a cube-corner prism; then, the pitching and inclination angles of the plane spectroscope are adjusted, so that the number of fringes in an interferogram area is 20-50; then the guide rail is moved to scan the wavefront to be measured, and interferograms of the pentaprism at different positions are obtained; and finally, extracting inclination amounts of different positions of the measured wave surface from the interference pattern by using a fast Fourier transform (FFT) algorithm, and obtaining surface shape distribution of the measured wave surface through polynomial fitting. The device is simple in structure and low in cost, can accurately measure the emergent wave of the collimation system, and provides an effective basis for the adjustment of the collimation system.

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.

The invention discloses a camera module and electronic equipment, and belongs to the technical field of electronic equipment. The camera module comprises a lens assembly, the lens assembly comprises at least three lenses, the at least three lenses are arranged at intervals along a first direction, the lenses comprise a first lens, and the first lens has positive focal power; the first reflection assembly is arranged on one side of the lens assembly in the first direction, the first reflection assembly is used for reflecting incident light rays incident in the second direction to the lens assembly, and the second direction intersects with the first direction; the second reflection assembly is arranged on the other side, away from the first reflection assembly, of the lens assembly in the first direction, the second reflection assembly comprises at least one pentagonal prism, and the pentagonal prism is used for turning incident light rays from the lens assembly; and the photosensitive chip is arranged on one side of the second reflection assembly, and the photosensitive chip is used for receiving the incident light from the second reflection assembly so as to form an image.

The present invention discloses an erect image system and a laser rangefinder binocular telescope, relating to the field of binocular telescopes. The erect image system includes: a left erect image system and a right erect image system; both the left erect image system and the right erect image system include a roof prism and a cemented prism; the cemented prism is formed by cementing a half pentaprism and a small half pentaprism; a beam splitting coating is provided on the cementing surface of the half pentaprism and the small half pentaprism. The present invention not only has a simple structure and small occupied volume, but also is convenient to use, can realize binocular observation and aiming at the object to be measured, and can display the distance of the object to be measured in real time in the field of view while observing the object.

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 utility model discloses a single lens reflex one-time imaging camera with a replaceable lens, which comprises a camera body and photographic paper arranged in the camera body, and further comprises a replaceable lens bayonet, a mechanical shutter system, a single lens reflex optical view finding system and an FDU instant imaging module, the camera further comprises an interchangeable lens, the interchangeable lens is connected with the camera body through an interchangeable lens bayonet, and the interchangeable lens bayonet is connected with the camera body through a clamping device. The single lens reflex optical framing system comprises a reflector assembly, a pentaprism structure and a viewfinder, the reflector assembly is arranged behind the replaceable lens bayonet, the position of the reflector assembly is controlled through a mechanical shutter system to achieve switching between framing and shooting, and light enters from the replaceable lens, is reflected to the pentaprism structure through the reflector assembly and is finally projected to the viewfinder; the mechanical shutter system is arranged behind the reflector assembly; according to the scheme, the universality of the camera is optimized, and a user can freely replace the lens according to different scenes and enjoy the convenience of instant imaging at the same time.

The utility model discloses a tool structure for stabilizing precision of a laser collimator, and relates to the technical field of laser interferometer equipment. The laser collimator comprises a linear rail, wherein a laser collimator body is arranged on one side of the linear rail; an adjusting assembly is arranged at the top of the linear rail and comprises a refraction base, the refraction base is arranged at the top of the linear rail, a parallel platform is arranged at the top of the linear rail, mounting rods are fixedly connected to the tops of the parallel platform and the refraction base, and a pentaprism and an M device are slidably connected to the surfaces of the two mounting rods respectively. The device has the advantages of simplicity in operation, high focusing speed, adjustable height, adaptability to different positions, convenience in movement and the like, and is accurate in precision detection and high in efficiency; as an important ring in the laser collimator, the tool structure not only improves the focusing speed, but also can solve the problem of poor consistency, and reduces the detection time cost.

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 present invention belongs to the technical field of telescope manufacturing, and discloses a large-aperture target observation telescope optical system, which is characterized in that: along the optical axis direction, from the object side to the image side, there are successively arranged an objective first lens, an objective second lens, a Porro first prism, a Porro second prism, a half pentaprism, a reticle, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens, an eyepiece fourth lens, an eyepiece fifth lens, an eyepiece sixth lens, and an eyepiece seventh lens. This optical system can achieve continuous zooming from 25 times to 75 times, and has good imaging quality.

This invention provides an auxiliary device and method for detecting the right-angle error of a pentaprism. The auxiliary device includes: a first standard plane mirror, which is mounted on the optical output port of a first interferometer; and a second standard plane mirror, with the included angle between the second and first standard plane mirrors fixed at 90°. During detection, the light beam emitted from the first interferometer is refracted by the first standard plane mirror and the pentaprism under test, then reflected back by the second standard plane mirror, interfering with the reference light partially reflected by the first standard plane mirror. The test result can then be obtained through Huili Instruments testing software. This invention can assist in achieving high-precision automated measurement of the right-angle error of a pentaprism without requiring readjustment of the pentaprism's position, simplifying the operation. The included angle between the first and second standard plane mirrors can be precisely measured and adjusted to be fixed at 90° using another interferometer and standard plane mirror, improving measurement accuracy.

A binocular telescope includes a pair of Schmidt-Pechan roof prisms, one half pentaprism, a right-angle prism, a main circuit board, and an auxiliary circuit board. The half pentaprism is connected to a lateral surface of another half pentaprism, and includes a lateral surface substantially faces the other half pentaprism. The right-angle prism includes one lateral surface connected to the lateral surface of the half pentaprism, and another lateral surface whose normal is perpendicular to the normals of the lateral surfaces of both the half pentaprism and the another half pentaprism. A light emitter and a light receiver of the auxiliary circuit board are arranged above the another lateral surface of the right-angle prism and electrically connected with the main circuit board respectively. Therefore, the binocular telescope is arranged in a centralized manner, so that the complexity in production and maintenance is effectively reduced.

The present invention discloses an ellipsometry initial incident angle calibration device and method. The calibration device includes a translation device, a first pitch adjustment device, a second pitch adjustment device, and an intermediate adjustment device. The translation device includes a translation platform, a CCD camera, and a telecentric lens. The telecentric lens is detachably mounted on the CCD camera, and the CCD camera translates on the translation platform. The first pitch adjustment device includes a first pitch and yaw adjustment platform and an autocollimator mounted on the first pitch and yaw adjustment platform. The second pitch adjustment device includes a second pitch and yaw adjustment platform and a frequency-stabilized laser mounted on the second pitch and yaw adjustment platform. The intermediate adjustment device includes a position adjustment platform and a pentaprism mounted on the position adjustment platform. Compared with the prior art, the present invention can achieve that the optical axis of the autocollimator is 90° with the movement axis of the CCD camera, and the optical axis of the frequency-stabilized laser is 180° with the movement axis of the CCD camera, so as to complete the calibration of the initial 90° incident angle of ellipsometry.

The utility model discloses a pentaprism right-angle error detection auxiliary device, and belongs to the technical field of pentaprism detection, the pentaprism right-angle error detection auxiliary device comprises a basic module and an auxiliary detection module, the basic module comprises a mounting assembly, an adjusting assembly is arranged on the surface of the mounting assembly, and the auxiliary detection module is arranged at one end of the mounting assembly. The auxiliary detection module comprises an auxiliary assembly arranged at one end of the installation assembly, and a pointing fixing assembly is arranged on one side of the auxiliary assembly. The auxiliary assembly can assist the adjusting assembly in angle adjustment, and the pointing fixing assembly can point to any scale on the auxiliary assembly to achieve fixation; through the arrangement of the adjusting assembly, the degree of the included angle formed by the adjusting assembly can be adjusted according to the scale pointed by the pointing fixing assembly, so that the right angle of the pentaprism can be detected, a user with low education can also use the device to detect the right angle of the pentaprism, and the applicability is improved.

The present invention relates to an imaging device for a distal end section of an endoscope, wherein the imaging device comprises a pentaprism with a main body and a prism wedge, and at least a first image sensor for capturing light of a first spectral region and a second image sensor for capturing light of a second spectral region are assignable to the imaging device, and a dichroic beam splitting layer as a first internal reflective and transmissive splitting layer is arranged between the main body and the prism wedge of the pentaprism, so that incident beams comprising the first and second spectral regions are split by the dichroic beam splitting layer into first beams of the first spectral region and second beams of the second spectral region, wherein at least one separate optical element is arranged between the pentaprism and the first image sensor and / or the second image sensor for changing a property of the light of the first spectral region and / or the second spectral region. Furthermore, the invention concerns an objective system and an endoscope.

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 present invention discloses a multi-optical axis on-line compensation alignment system and method for a space environment simulation system, which relates to the field of space optoelectronic tracking and pointing. The key technical solutions include a TSSOC system, a pentaprism, a stray light simulation system, and a second reflector. The TSSOC system is used to send simulated light simulating an observed object to a camera to be measured. The pentaprism is used to determine the intersection of the optical axes of the TSSOC system and the stray light simulation system for placing the camera to be measured. A beacon light source is built in the TSSOC system. The beacon light emitted by the beacon light source is divided into two beams. One beam is always inside the TSSOC system to form a reference light spot in the signal camera, and the other beam passes through the second reflector on the camera to be measured to form a second beacon light spot in the signal camera. In the scenario where the incident angle of stray light changes dynamically, by dynamically adjusting the TSSOC system to keep the reference light spot and the second beacon light spot coincident, the position of the camera to be measured relative to the simulated light can be dynamically compensated.

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 high-definition synchronous shooting telescope, which is provided with an optical objective lens system, an optical positive image system and an optical eyepiece system, the optical positive image system is composed of a semi-pentaprism and a roof prism, a first reflecting surface of the semi-pentaprism is plated with a first reflecting film, and a second reflecting surface of the semi-pentaprism is plated with a second reflecting film. The first reflecting film is provided with a semi-pentaprism light-emitting hole, light entering the semi-pentaprism is emitted through the semi-pentaprism light-emitting hole and enters the roof prism, and the light enters the optical eyepiece system through the roof prism; a second reflecting surface of the half pentaprism is plated with a second reflecting film, the second reflecting film is provided with a photographing light transmitting hole, and part of the light entering the roof prism enters a photographing and / or camera shooting system through the photographing light transmitting hole. Photographing and camera shooting can be operated while human eye observation is achieved, a photographed picture is completely the same as a scenery observed from the eyepiece, the picture is clear, and observation of the telescope is not affected.

The invention provides a device and a method for adjusting static balance of a sensitive part of a gyro direction finder. The method comprises the following steps: placing a static balance test tool with a pentaprism below an instrument, and placing an auto-collimation theodolite on the outer side; adjusting the auto-collimation theodolite to enable the optical axis to be horizontal and aligned with the pentaprism; lowering the sensitive part, deflecting the horizontal collimated light by 90 degrees by the pentaprism, and vertically irradiating the horizontal collimated light to a plane reflector in the center of the bottom of the sensitive part; and observing the offset of an auto-collimation image relative to the division center through the auto-collimation theodolite, and when the offset exceeds a threshold value epsilon, adjusting a counterweight adjusting block at the bottom of the sensitive part to perform radial micro displacement until the offset is not greater than epsilon, thereby finishing adjustment. The method is helpful for stabilizing the light path, reducing subjective difference and improving adjustment consistency and efficiency.

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 invention belongs to but not limited to the technical field of hollow pentaprisms, and discloses a hollow pentaprism manufacturing method and an internal angle error measurement method thereof, and the method comprises the steps: determining a 135-degree alignment relation between an autocollimator III and an autocollimator I by using an autocollimator I, an autocollimator II, a double-sided mirror I and a double-sided mirror II; a first autocollimator, a second autocollimator, a first single-sided mirror and a second single-sided mirror are used for manufacturing a hollow pentaprism and measuring the internal angle of the hollow pentaprism. According to the invention, a plurality of autocollimators and two single-sided mirrors can be used for quickly and accurately manufacturing a hollow pentaprism or performing internal angle error measurement on the manufactured hollow pentaprism.

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.