63 results about "Pentaprism" patented technology

The invention belongs to the technical field of telescope manufacturing, and discloses a 20 * 42 telescope system which is characterized in that an objective first lens, an objective second lens, a focusing lens, a semi-pentaprism, a roof prism, a rhombic prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens and an eyepiece fourth lens are sequentially arranged in the optical axis direction from the object side to the image side. The visual field of the whole machine is 3.25 degrees, the exit pupil diameter is 2.1 mm, the exit pupil distance is 35 mm, the nearest focusing distance is 8 m, and the image stabilization range is + / -5 degrees.

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.

The invention belongs to the technical field of telescope manufacturing, and discloses a large-aperture spotting scope optical system which is characterized in that an objective lens first lens, an objective lens second lens, a Porro first prism, a Porro second prism, a semi-pentaprism, a reticle, 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, continuous zooming from 25 times to 75 times can be realized, and the imaging quality is good.

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 invention discloses a telescope optical system, which belongs to the technical field of telescope manufacturing and 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, a third eyepiece lens and a fourth eyepiece lens are sequentially arranged from an object side to an image side, according to the fifth lens of the eyepiece, the imaging quality is improved by using multiple groups of balsaming lenses.

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 the imaging device is assigned at least one first image sensor for detecting light of a first spectral range and a second image sensor for detecting light of a second spectral range, and a dichroic beam splitter layer is arranged between the main body and the prism wedge of the pentaprism as a first internal reflective and transparent splitter layer, such that incident rays comprising the first and second spectral ranges are split by the dichroic beam splitter layer into first rays of the first spectral range and second rays of the second spectral range.wherein at least one separate optical element for modifying a property of the light in the first spectral range and / or the second spectral range is arranged between the pentaprism and the first image sensor and / or the second image sensor. The invention further relates to a lens system and an endoscope.

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.

The invention discloses an adjustment-free optical system based on aiming and receiving common aperture and a use method thereof. The optical system comprises an aiming / receiving objective lens, an aiming eyepiece and a prism component. The prism component is arranged between the aiming / receiving objective lens and the aiming eyepiece. The prism component comprises a Schmidt roof prism, a half pentaprism, a beam splitter, an isosceles prism, a transition block, a right-angle prism and a receiving pinhole diaphragm. The beam splitter is connected to the outer reflection surface of the half pentaprism. The isosceles prism and the transition block are adjacently connected to the outer surface of the beam splitter. The outer side of the transition block is connected with a right-angle prism and a receiving pinhole diaphragm. A photoelectric detector is arranged on the outer side of the receiving pinhole diaphragm. The invention adopts an aiming / receiving common optical path design and is adjustment-free, so that light of multiple different wavelengths can achieve the purpose of conjugation, ensures that the white light aiming optical axis coincides with the laser receiving optical axis, and the receiving pinhole diaphragm is always on the focal plane, reduces the difficulty of adjustment, and improves the work efficiency.

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.

The invention discloses a photoelectric load optical axis and IMU deviation calibration device and a calibration and use method thereof, relates to the technical field of optical correction devices, and solves the problems that a traditional photoelectric load optical axis and IMU deviation calibration device is low in precision and cannot be assembled and adjusted in batches. The device comprises a collimator which is internally provided with a detector and a light source; the reflector I corresponds to the first opening; a pentaprism; the semi-transparent and semi-reflective mirror II corresponds to the second opening; a reflector II; the reflecting mirror III corresponds to the third opening; a small reflector I and a small reflector II are adhered to the surface of the IMU; light emitted by the collimator is divided into two beams after passing through the reflector I, the pentaprism and the semi-transparent and semi-reflective mirror II, and one beam of light is emitted to the small reflector I from the second opening and is reflected by the small reflector I to return according to an original light path; and the other beam of light is emitted to the small reflector II from the third opening through the reflector II and the reflector III, and is reflected by the small reflector II to return according to the original light path, and the two beams of returned light are focused at the central position of the detector.

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 invention relates to an imaging device for a distal end portion of an endoscope, an objective lens system and an endoscope. The invention relates to an imaging device for a distal end part of an endoscope, in which the imaging device comprises a pentaprism having a 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 can be assigned to the imaging device, and a dichroic beam splitting layer as a first internal reflection and transmission light splitting layer is arranged between the body of the pentaprism and the prism wedge such that an incident light beam comprising the first and second spectral regions is split by the dichroic beam splitting layer into a first light beam of the first spectral region and a second light beam 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 the properties of the light in the first spectral region and / or the second spectral region. The invention further relates to an objective lens 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.