CN111552088A

CN111552088A - Light beam separation system

Info

Publication number: CN111552088A
Application number: CN201910109907.4A
Authority: CN
Inventors: 李继达; 陈坚美; 李松
Original assignee: Hangzhou Smart Lidar Technology Co ltd
Current assignee: Hangzhou Smart Lidar Technology Co ltd
Priority date: 2019-02-11
Filing date: 2019-02-11
Publication date: 2020-08-18

Abstract

The invention relates to the technical field of prisms, and discloses a light beam separation system which comprises an eyepiece observation system, a first half-pentaprism, a photoelectric conversion device, a second half-pentaprism, a light path lens group, a display device, an objective lens group and a roof prism, wherein the first half-pentaprism is placed on the right side of the eyepiece observation system, the second half-pentaprism is bonded at the bottom of the first half-pentaprism, the photoelectric conversion device is positioned below the second half-pentaprism, and the roof prism is positioned above the right side of the first half-pentaprism. The light beam separation system achieves the purpose of dividing one path of light into 2 paths or more, can achieve the coaxiality of three paths of light, namely the separation of the coaxial light, or the supplement of extra light into a main light path, the cost is high when one prism is specially customized for the existing light path beam separation system on the market, the universality and the processing and assembling difficulty are high, the light splitting of the light path can be achieved only by adding one half-five prism in the design, the structure is simple, and the processing cost is low.

Description

Light beam separation system

Technical Field

The invention relates to the technical field of prisms, in particular to a light beam separation system.

Background

The prism is a polyhedron made of transparent materials (such as glass, crystal and the like), is widely applied in optical instruments, and can be divided into a plurality of types according to the properties and the purposes of the prism, for example, a 'dispersion prism' which decomposes composite light into spectra in a spectral instrument, an equilateral prism is more commonly used, a 'total reflection prism' which changes the proceeding direction of light in instruments such as a periscope, a binocular telescope and the like so as to adjust the imaging position of the prism is generally a right-angle prism.

According to a beam splitting prism assembly and a beam splitting system disclosed in CN 205749884U of china, the beam splitting system can only split one path of light into two paths, and cannot realize combination or separation of the third path of light, and the compensation prism is a customized prism, which leads to high processing and manufacturing costs, and a prism is specially customized to be used in cooperation with a schmidt-bihaman prism system to realize combination (separation) of light beams, such a system structure has relatively high requirements on cost and processing technology, and processing also needs a special tool clamp, so a beam splitting system is provided to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a light beam separation system which has the advantages of simple and compact structure and capability of providing a light beam separation system capable of separating multiple light beams, and solves the problems that the processing and manufacturing cost is high due to the customized prism, the combination (separation) of the light beams is realized by specially customizing one prism to be matched with a Schmidt-Biehan prism system (a Paul prism system, an Abbe prism system and the like), the cost and the processing process requirements of the system structure are relatively high, and a special tool clamp is required for processing.

(II) technical scheme

In order to achieve the purpose of providing a beam splitting system which has a simple and compact structure and can split multiple paths of light beams, the invention provides the following technical scheme: the utility model provides a light beam separation system, includes eyepiece observation system, first half-pentaprism, photoelectric conversion device, half-pentaprism of second, a branch light path lens group, display device, objective lens group and roof prism, first half-pentaprism has been placed on eyepiece observation system's right side, the bottom of first half-pentaprism bonds and has half-pentaprism of second, photoelectric conversion device is located the below of half-pentaprism of second, the roof prism is located the upper right side of first half-pentaprism, the objective lens group is located roof prism's right side, a branch light path lens group is located the right side of half-pentaprism of second, display device is located the right side of a branch light path lens group.

Preferably, first half pentaprism angle and second half pentaprism angle are the same completely, first half pentaprism and second half pentaprism mutual adhesion and opposite face are parallel, promptly the right flank of second half pentaprism is parallel with the left surface of first half pentaprism, the top side of first half pentaprism is parallel with the bottom side of second half pentaprism, the bottom side of first half pentaprism and the top side of second half pentaprism bond.

(III) advantageous effects

Compared with the prior art, the invention provides a light beam separation system, which has the following beneficial effects:

the light beam separation system needs to customize a prism to be matched with a Schmidt-Biehan prism system (a Paul prism system, an Abbe prism system and the like) in a traditional mode, the system is used for bonding two half-five prisms with equal or unequal sizes and same angles, the cost is low, the processing and the assembly are convenient, the beam splitting (combination) of light paths with different wave bands can be easily realized by matching different coating films on a bonding surface, the working mode of the device is that the two half-five prisms of the first half-five prism and the second half-five prism are bonded, the light splitting can be realized aiming at the difference of light reflection and transmittance of different wave bands after the coating films are carried out on the bonding surface, the purpose of splitting one path of light into 2 paths and above can be realized, the coaxiality of three paths of light can be realized, namely the coaxial light is split, or additional light is supplemented into the main light path, the beam splitting system on the existing market is specially customized one prism, the, the universality and the processing and assembling difficulty are high, the light splitting of a light path can be realized by only adding one half-pentaprism in the design, the structure is simple, and the processing is low.

Drawings

FIG. 1 is a schematic structural diagram of a beam splitting system according to the present invention;

FIG. 2 is a general optical path diagram of a beam splitting system according to the present invention;

FIG. 3 is a diagram of the r1 optical path of a beam splitting system according to the present invention;

FIG. 4 is a diagram of the r2 optical path of a beam splitting system according to the present invention;

FIG. 5 is a diagram of the r3 optical path of a beam splitting system according to the present invention;

FIG. 6 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 7 is a general optical path diagram of a second embodiment of the present invention;

fig. 8 is a light path diagram of r4 according to a second embodiment of the present invention;

fig. 9 is a light path diagram of r5 according to a second embodiment of the present invention;

fig. 10 is a light path diagram of r6 according to a second embodiment of the present invention; .

In the figure: 1 ocular observation system, 2 first half-pentaprism, 3 photoelectric conversion devices, 4 second half-pentaprism, 5 optical path lens groups, 6 display devices, 7 objective lens groups and 8 roof prism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-5, a beam splitting system comprises an eyepiece viewing system 1, a first half-pentaprism 2, a photoelectric conversion device 3, a second half-pentaprism 4, a light path lens group 5, a display device 6, an objective lens group 7 and a roof prism 8, wherein the first half-pentaprism 2 is placed on the right side of the eyepiece viewing system 1, the smallest acute angle degree in the second half-pentaprism 4 is equal to the smallest acute angle degree in the first half-pentaprism 2, a coating film is provided on the bottom surface of the first half-pentaprism 2, the first half-pentaprism 2 and the second half-pentaprism 4 are both made of glass, a coating film is provided on the top surface of the second half-pentaprism 4, the first half-pentaprism 2 is obliquely arranged, the second half-pentaprism 4 is obliquely arranged, the first half-pentaprism 2 is manufactured by integral fine grinding, the angle of the first half-pentaprism 2 is identical to the angle of the second half-pentaprism 4, the first half-pentaprism 2 and the second half-pentaprism 4 are adhered to each other and have, namely, the right side surface of the second half-pentaprism 4 is parallel to the left side surface of the first half-pentaprism 2, the top side surface of the first half-pentaprism 2 is parallel to the bottom side surface of the second half-pentaprism 4, the bottom side surface of the first half-pentaprism 2 is bonded to the top side surface of the second half-pentaprism 4, the second half-pentaprism 4 is manufactured by integral fine grinding, the second half-pentaprism 4 is bonded to the bottom of the first half-pentaprism 2, the photoelectric conversion device 3 is positioned below the second half-pentaprism 4, the roof prism 8 is positioned at the upper right of the first half-pentaprism 2, the objective lens group 7 is positioned at the right side of the roof prism 8, the size of the second convex lens in the eyepiece observing system 1 is smaller than that of the objective lens group 7, the light path lens group 5 is positioned at the right side of the second half-pentaprism 4, the light path lens group 5 comprises a third convex lens, a focusing lens and a concave lens, the third convex lens is positioned at the left side of the focusing lens, the display device 6 is positioned at the right side of the light path branching lens group 5, the eyepiece observation system 1 comprises a first convex lens and a second convex lens, the first convex lens is positioned at the left side of the second convex lens, the traditional mode needs to customize a prism to be matched with a Schmidt-Pechan prism system (a Paul prism system, an Abbe prism system and the like), the system is used for bonding two half-five prisms with equal or unequal sizes and same angles, the cost is low, the processing and the assembly are convenient, the beam splitting (combination) of different wave band light paths can be easily realized by matching different coating films on the bonding surface, the working mode of the device bonds two half-five prisms of a first half-five prism 2 and a second half-five prism 4, the light splitting can be realized aiming at the difference of the light reflection and the transmittance of different wave bands after the coating films on the bonding surface, so as to realize the purpose of splitting one path light into 2 paths and above, the light path splitting system on the market is high in cost because one prism is specially customized, universality and processing and assembling difficulty are high, light splitting of light paths can be realized only by adding one half-five prism in the design, the structure is simple, processing is low, r1/r2/r3 in the drawing is a light path turning-back mode of each light path, and the light paths can be matched and combined with each other for use.

Example two:

referring to fig. 6-10, in a light beam splitting system, a roof prism 8 is located at the left upper side of a first half-pentaprism 2, a light path lens set 5 and a display device 6 are obliquely arranged, and a photoelectric conversion device 3 is parallel to the opposite surface of a second half-pentaprism 4.

The optical path in the second embodiment is subdivided into r4/r5/r6, fig. 8, 9 and 10 are optical path diagrams of r4/r5/r6 in turn, the optical path diagram of r4/r5/r6 in the second embodiment is obviously different from the optical path diagram of r1/r2/r3 in the first embodiment, the optical path diagram of r4/r5/r6 is used to express the optical path folding manner of each optical path in the second embodiment, and each optical path can be used in combination with each other.

To sum up, the conventional optical beam splitting system needs to customize a prism to match with a schmidt-heiham prism system (paul prism system, abbe prism system, etc.), which uses two half-five prisms with equal or unequal sizes but same angles for bonding, has low cost and convenient processing and assembly, and can easily realize beam splitting (combination) of different wave band optical paths by matching different bonding surfaces with different coating films, the working mode of the device bonds two half-five prisms of the first half-five prism 2 and the second half-five prism 4, realizes beam splitting aiming at different wave band light reflection and different transmittance after coating films on the bonding surfaces, so as to realize the purpose of splitting one path of light into 2 paths and above, realize the coaxiality of three paths of light, i.e. the coaxial light is split out, or additional light is supplemented into a main optical path, the existing optical path splitting systems on the market are specially customized with one prism at high cost, the universality and the processing and assembling difficulty are high, the light splitting of a light path can be realized by only adding one half-pentaprism in the design, the structure is simple, and the processing is low.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a beam splitting system, includes eyepiece observation system (1), first half pentaprism (2), photoelectric conversion device (3), second half pentaprism (4), branch light path lens group (5), display device (6), objective lens group (7) and roof prism (8), its characterized in that: first half pentaprism (2) have been placed on the right side of eyepiece observation system (1), the bottom of first half pentaprism (2) bonds and has second half pentaprism (4), photoelectric conversion device (3) are located the below of second half pentaprism (4), roof prism (8) are located the upper right side of first half pentaprism (2), objective lens group (7) are located the right side of roof prism (8), light path lens group (5) are located the right side of second half pentaprism (4), display device (6) are located the right side of light path lens group (5).

2. A beam splitting system according to claim 1, wherein: first half pentaprism (2) angle is the same with second half pentaprism (4) angle completely, first half pentaprism (2) and second half pentaprism (4) are mutual bonding and the opposite face is parallel, promptly the right flank of second half pentaprism (4) is parallel with the left surface of first half pentaprism (2), the top side of first half pentaprism (2) is parallel with the base side of second half pentaprism (4), the base side of first half pentaprism (2) and the top side of second half pentaprism (4) bond.