Optical platform and optical system using the same

Abstract

The application discloses an optical platform and an optical system applying the optical platform, and the optical platform comprises a substrate and an optical panel made of a brittle material, the optical panel is arranged on the substrate, and the upper surface of the optical panel is flat. Compared with the prior art, the application has the advantages that: by arranging the layered optical platform structure, the upper optical panel is made of the brittle material, the excellent surface flatness can be ensured, the mechanical performance of the optical platform can be greatly improved on the premise of reserving the advantages of the traditional optical platform, the stability and convenience of the applied optical system are greatly improved, and in addition, since the optical panel is made of the brittle material, the expansion coefficient is small, the expansion coefficient of the optical panel is matched with that of the traditional optical element, and the temperature stability of the applied optical system can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of optical experimental equipment, and in particular to an optical platform and an optical system using the optical platform. Background Technology

[0002] Optical platforms, also known as optical breadboards, optical desktops, scientific desktops, or experimental platforms, are widely used in optics, electronics, precision machinery manufacturing, metallurgy, aerospace, aviation, marine, precision chemicals, and non-destructive testing, as well as in other mechanical industries as critical devices for vibration isolation of precision testing instruments and equipment.

[0003] Optical platforms strive for horizontality, and during their fabrication, the entire table surface is extremely flat. The table surface is covered with engineering threaded holes arranged in a square pattern, which, along with corresponding screws, are used to fix optical components.

[0004] Most optical platforms are currently made of metal, such as carbon steel, but carbon steel is prone to rust and difficult to maintain. Stainless steel is also used, but its limited processing flexibility results in poor flatness. Furthermore, during use, impacts and other factors can easily cause dents on the platform's surface. Because metal is malleable, these dents also create surface bumps. Even small dents can affect the positioning of the optical positioning blocks, while tiny bumps or burrs can severely interfere with their positioning. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an optical platform that can improve mechanical performance, in order to address the shortcomings of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide an optical system that uses the above-mentioned optical platform.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an optical platform, characterized in that: it includes a substrate and an optical panel made of a brittle material, the optical panel being disposed on the substrate, and the upper surface of the optical panel being planar.

[0008] Preferably, the optical panel and the substrate are fixed by means of adhesive bonding, mechanical bonding or optical bonding to the upper surface of the substrate.

[0009] Further, the optical platform can also be a three-layered structure, the optical platform further comprising an optical flat and a pressing block, the optical flat being located below the substrate and the projection of the optical flat on the horizontal plane covering the substrate and the optical panel, the pressing block being fixed with the part of the optical flat located outside the periphery of the substrate, the pressing block being further pressed against the upper surface of the optical panel near the edge, so that the pressing block fixes the optical panel, the substrate and the optical flat.

[0010] To ensure the pressing between the pressing block and the optical panel, an elastic body is arranged between the pressing block and the optical panel.

[0011] The present application solves the second technical problem by adopting the technical solution of an optical system characterized by applying the optical platform as described above.

[0012] To facilitate the experimental operation on the optical platform and improve the flexibility of the optical system, the optical system further comprises a positioning block for setting optical instruments or optical elements, the positioning block being arranged on the upper surface of the optical panel, the substrate and / or the optical panel being detachably connected with the positioning block, the connection between the substrate and the positioning block being direct or indirect.

[0013] According to an aspect of the present application, to facilitate the indirect connection between the positioning block and the substrate, the optical panel comprises at least two panel modules, the positioning block being arranged on the panel modules, each panel module being arranged on the substrate at intervals to splice the optical panel, a groove being formed between adjacent panel modules, the groove being recessed from the upper surface of the optical panel towards the substrate, a fixing member for connecting with the positioning block being embedded in the groove, the fixing member being lower than the upper surface of the optical panel, the fixing member being fixed with the substrate.

[0014] According to another aspect of the present application, to facilitate the indirect connection between the positioning block and the substrate, a groove is formed on the optical panel, the groove being recessed from the upper surface of the optical panel towards the substrate, a fixing member for connecting with the positioning block being embedded in the groove, the fixing member being lower than the upper surface of the optical panel, the fixing member being fixed with the substrate.

[0015] Preferably, to facilitate the connection of each side of the positioning block with the substrate, the groove comprises a plurality of first grooves and second grooves arranged at angles, the first grooves and the second grooves being arranged in an array, each first groove being arranged between two adjacent second grooves, each second groove being arranged between two adjacent first grooves, the positioning block being arranged at the region enclosed by two adjacent rows of first grooves and two adjacent columns of second grooves.

[0016] According to an aspect of the present application, the optical panel and the positioning block are fixed by magnetic attraction.

[0017] Preferably, the optical panel is provided with a first positioning hole, the positioning block is provided with a base, the base is provided with a second positioning hole, one of the first positioning hole and the second positioning hole is embedded with a magnet, and the other of the first positioning hole and the second positioning hole is embedded with a magnetic material.

[0018] To better ensure the positioning of the positioning blocks and the stability of the system, the positioning blocks are at least two and are arranged adjacently, and the adjacent positioning blocks are magnetically attracted.

[0019] Preferably, the positioning blocks are magnetically attracted in the following manner: each positioning block is further provided with a first fixing block and a second fixing block, each side wall of the base is formed with a first notch, the side wall refers to the wall surface of the cross section of the base, the first notch is formed by recessing the surface of the side wall of the base towards the inside of the base, the first fixing block is arranged above the base, each side wall of the first fixing block is formed with a second notch corresponding to the first notch, the first notch and the second notch are integrated, the second fixing block is embedded at the first notch and the second notch, the second fixing block is fixed with the first fixing block, the outer surface of the second fixing block away from the first notch and the second notch is provided with at least two positioning grooves, one of the positioning grooves is embedded with a magnet, and the other of the positioning grooves is embedded with a magnetic material, so that the second fixing block of each positioning block is magnetically attracted to the second fixing block of the adjacent positioning block.

[0020] To avoid the mechanism of magnetic attraction affecting the positioning of the positioning block and ensure the positioning accuracy, each side wall of the base at the position between the two sides of the first notch constitutes a reference surface, the reference surface is a plane, the second fixing block is recessed by a certain distance relative to the reference surface, the corresponding reference surfaces of the adjacent positioning blocks abut each other, and the bottom surface of the second fixing block is higher than the bottom surface of the base.

[0021] To avoid the mechanism of magnetic attraction forming a lateral pulling force on the positioning block, the size of the positioning groove embedded with the magnetic material is greater than the size of the positioning groove embedded with the magnet.

[0022] To further improve the stability of the positioning block, the optical system further comprises a leaning body, the leaning body is arranged at the position close to the edge of the upper surface of the optical panel, the positioning block has at least two and is capable of abutting the side of the leaning body towards the middle of the optical system, and the adjacent positioning blocks abut each other, each side wall of the base is formed with a first notch, the side wall refers to the wall surface of the cross section of the base, the first notch is formed by recessing the surface of the side wall of the base towards the inside of the base, the optical system further comprises a fixed connecting piece and a top bead screw, the fixed connecting piece is arranged only on the free wall surface of the positioning block which does not contact the leaning body and other positioning blocks, and the top bead screw is screwed from the side surface of the fixed connecting piece to abut the bottom surface of the first notch of the base, so that the adjacent positioning blocks abut each other and the positioning block and the leaning body abut each other.

[0023] According to another aspect of the present application, the positioning block and the optical panel are fixed by compression between them, the positioning block comprises a base, a fixing connector and a top bead screw, the fixing connector is directly or indirectly detachably connected with the base plate, the fixing connector is arranged on the side of the base and at least partially above the base, the top bead screw passes through the fixing connector from top to bottom and abuts against the upper surface of the base, thereby making the positioning block and the optical panel compress.

[0024] According to another aspect of the present application, the positioning block and the optical panel are fixed by magnetic attraction between them through external components, the optical panel is provided with a first positioning hole, the positioning block comprises a base provided with a second positioning hole, an adapter for arranging optical elements is arranged on the positioning block, the adapter has a leg, the leg is a magnetic metal piece, the leg passes into the first positioning hole of the optical panel from the upper surface of the base through the second positioning hole, and the leg is magnetically attracted and fixed with a magnet arranged in the first positioning hole.

[0025] According to another aspect of the present application, the positioning block and the optical panel are fixed by vacuum adsorption between them, the bottom surface of the positioning block is tightly attached to the upper surface of the optical panel, a hollow inner cavity is formed in the optical panel, the inner cavity penetrates the upper surface of the optical panel, and the inner cavity is connected to a vacuum pump, so that the positioning block is adsorbed by vacuumizing.

[0026] In order to further improve the positioning accuracy and stability of the positioning block, the optical system further comprises a supporting body, the supporting body is arranged on the upper surface of the optical panel near the edge, the positioning block has at least two and can abut against one side of the supporting body towards the middle of the optical system, and adjacent positioning blocks abut against each other.

[0027] In order to facilitate the application of force between the supporting body and the positioning block to stably abut against each other, the positioning block abutting against the supporting body and the corresponding supporting body are magnetically attracted and adsorbed.

[0028] Compared with the prior art, the present application has the advantages that: by arranging a layered optical platform structure, the upper optical panel is made of brittle material, which can ensure excellent surface flatness, and can greatly improve the mechanical properties of the optical platform under the premise of retaining the advantages of the traditional optical platform, thereby greatly improving the stability and convenience of the applied optical system; in addition, since the optical panel is made of brittle material, the expansion coefficient is small, which is matched with the expansion coefficient of the traditional optical element, and the temperature stability of the applied optical system can be greatly improved; the positioning block of the optical system is fixed with the optical platform by means of fasteners, magnetic attraction, vacuum, compression and the like, which can also greatly improve the stability and flexibility of the optical system. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Schematic diagram of optical platform of first embodiment of the present application;

[0030] Figure 2 Exploded structural schematic diagram of optical platform of first embodiment of the present application;

[0031] Figure 3 Schematic diagram of optical platform of second embodiment of the present application;

[0032] Figure 4 Exploded structural schematic diagram of optical platform of second embodiment of the present application;

[0033] Figure 5 Schematic diagram of optical platform of third embodiment of the present application;

[0034] Figure 6 Sectional view of optical platform of third embodiment of the present application;

[0035] Figure 7 Schematic diagram of optical system of first application example of the present application;

[0036] Figure 8 Schematic diagram of positioning block and optical instrument in Figure 7

[0037] Schematic diagram of positioning block in Figure 9 Figure 8 Schematic diagram of positioning block in

[0038] Figure 10 Figure 9 Schematic diagram of positioning block in

[0039] Figure 11 Schematic diagram of base of positioning block in Figure 9

[0040] Figure 12 Schematic diagram of optical system of second application example of the present application;

[0041] Figure 13 Schematic diagram of positioning block of optical system of second application example of the present application;

[0042] Figure 14 Schematic diagram of positioning block in Figure 12

[0043] Figure 15 Schematic diagram of optical system of third application example of the present application;

[0044] Figure 16 Schematic diagram of optical system of fourth application example of the present application; ​​​​

[0045] Figure 17 is a sectional view of Figure 16

[0046] Figure 18 is a partial schematic view of an optical system of a fifth application example of the present application;

[0047] Figure 19 is a sectional view of Figure 18 DETAILED DESCRIPTION

[0048] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like designations indicate the same or like elements or features that have the same or similar function(s).

[0049] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended for convenience of description and simplification of description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and since the disclosed embodiments of the present application can be disposed in different directions, these orientation-indicating terms are merely illustrative and should not be regarded as limiting. For example, "upper", "lower" are not necessarily limited to directions opposite or consistent with the direction of gravity. In addition, features defined as "first", "second" can explicitly or implicitly include one or more of the features.

[0050] Embodiment One

[0051] Referring to Figure 1 and Figure 2 , an optical platform includes an optical panel 1, the surface of which is a pure flat plane. The optical panel 1 is made of a brittle material such as ceramic, glass or quartz, and can achieve very good surface flatness through optical cold processing. Due to the particularity of the brittle material, operations such as drilling holes are not very convenient, and long-term grinding is required, which is very low in efficiency, and laser cutting can only cut some relatively thin materials, such as materials of several millimeters. However, since the thickness of the optical platform is much greater than this, if the thickness is not enough, the surface of the entire optical platform will be deformed, affecting the flatness of the optical panel 1 and affecting the positioning accuracy.

[0052] ​​Therefore, in the present application, a layered optical platform is proposed. In the present embodiment, the optical platform includes two layers. The first layer is the optical panel 1, and the second layer is the substrate 2. The optical panel 1 is arranged above the substrate 2, in particular, on the upper surface of the substrate 2. The upper surface of the optical panel 1 away from the substrate 2 is a plane. The optical panel 1 and the substrate 2 are respectively processed and formed. The optical panel 1 can be fixed to the substrate 2 by means of glue bonding, mechanical or optical bonding to form a complete optical platform. The entire optical platform is a generally flat cuboid. This way of splicing the upper and lower two layers can increase the thickness of the optical platform and increase the stability. At the same time, due to the adoption of the two-layer structure, the first layer can be cut or spliced, thereby reducing the processing cost.

[0053] The material of the substrate 2 is not limited, such as the same brittle material as the optical panel 1 or a ductile metal material, etc. If the substrate 2 and the optical panel 1 adopt the same material, the fixing method can be glue bonding or optical bonding process to fix the optical panel 1 above the substrate 2. Since the materials of the optical panel 1 and the substrate 2 are the same, the stress of the optical platform after gluing is very small, the thickness is sufficient, and the stability of the optical platform is guaranteed. If the substrate 2 adopts a different metal material from the optical panel 1, screw holes can be processed on the substrate 2, and the substrate 2 and the optical panel 1 can be fixed by crimping.

[0054] Specifically, in the present embodiment, the optical panel 1 includes at least two panel modules 11, which can be processed from a whole piece of brittle material by means of laser cutting or other processing methods. The above-mentioned plurality of panel modules 11 are preferably square in cross-section and arranged in an array on the upper surface of the substrate 2. Preferably, the shape and size of each panel module 11 are consistent. In the present embodiment, the panel modules 11 have a total of 56 pieces and are arranged in an array of eight rows and eight columns. Figure 1 The left upper to right down direction is a row, and the right upper to left down direction is a column. The same definition is used to describe other embodiments and application examples hereinafter.

[0055] The above-mentioned panel modules 11 are bonded to the substrate 2. After the array is spliced, grinding can be performed so that the upper surfaces of the panel modules 11 away from the substrate 2 are located on the same plane, so that the flatness of the upper surface of the optical panel meets the requirements of the optical platform.

[0056] Each of the adjacent two panel modules 11 has a certain spacing, and the adjacent rows and columns of the optical modules 11 form grooves 12. The form of the groove 12 is recessed from the upper surface of the optical panel 1 away from the substrate 2 to the substrate 2. In the present embodiment, preferably, the spacing between each of the adjacent two panel modules 11 is equal, and the panel modules 11 are arranged at uniform intervals.

[0057] The fixing member 3 is embedded in the groove 12, and is preferably made of metal. In this embodiment, the fixing member 3 is in the shape of a strip, and its length and width are adapted to the groove 12. The fixing member 3 can be provided with a first fixing hole 31. There can be a plurality of first fixing holes 31, which are arranged along the length direction of the fixing member 3, and are used to fix the positioning block (to be described below). Preferably, the first fixing hole 31 is a threaded hole, so that the positioning block is fixed by a fastener such as a screw. The fixing member 3 shown in the figure is in the shape of a sheet, and alternatively, the fixing member 3 can be in the shape of a block. A magnet can be arranged in the first fixing hole 31, and the positioning block 8 is fixed by magnetic attraction. In order to avoid interference between the fixing members 3, the fixing members 3 embedded in the grooves 12 between adjacent rows are arranged in an up-down staggered manner, and the fixing members 3 embedded in the grooves 12 between adjacent columns are arranged in a left-right staggered manner. After the fixing member 3 is embedded in the groove 12, the overall height of the fixing member 3 is lower than the optical panel 1, i.e., the upper surface of the fixing member 3 is lower than the upper surface of the optical panel 1.

[0058] The fixing member 3 can be fixed to the substrate 2 by an adhesive such as silicone or paraffin wax. There is a first fixing hole 31 around each panel module 11.

[0059] Embodiment Two

[0060] Referring to Figure 3 and Figure 4 In this embodiment, the difference from the above-described embodiment one is that the optical panel 1 is a whole plate, i.e., an integral plate member, and the upper surface thereof away from the substrate 2 is a high- flatness optical reference surface formed by grinding and polishing. In addition, the groove is cut on the optical panel 1 by laser cutting. In this embodiment, the groove includes the first groove 13 and the second groove 14 arranged at an angle, and is formed by recessing from the upper surface of the optical panel 1 away from the substrate 2 towards the substrate 2. In this embodiment, the first groove 13 and the second groove 14 are both arranged in an array, wherein the first groove 13 is seven rows and six columns, and the second groove 14 is six rows and seven columns. The first groove 13 and the second groove 14 are both in the shape of a strip, and the extending directions thereof are preferably perpendicular to each other. In addition, the shape and size of the first groove 13 and the second groove 14 are the same.

[0061] Each first groove 13 is arranged between two adjacent second grooves 14, each second groove 14 is arranged between two adjacent first grooves 13, and each row of first grooves 13 is further provided with a second groove 14 on both outer sides thereof. Thus, the shape formed thereby is that the two first grooves 13 of any two adjacent rows and the two second grooves 14 of any two adjacent columns enclose a rectangular shape (not a closed loop, i.e., the first groove 13 and the second groove 14 are not connected). In some application examples, a first positioning hole 15 is further provided in the area enclosed by the two first grooves 13 of any two adjacent rows and the two second grooves 14 of any two adjacent columns, and is used to fix the positioning block (to be described below).

[0062] The fixing member 3' is embedded in each first groove 13 and second groove 14, and a first fixing hole 31' is formed in the fixing member 3' for fixing a positioning block (to be described below). Preferably, the first fixing hole 31' is a screw hole. Alternatively, a magnet can be arranged in the first fixing hole 31' to be fixed with the positioning block 8 by magnetic attraction.

[0063] Embodiment Three

[0064] Referring to Figure 5 and Figure 6 In this embodiment, the optical platform is a three-layer structure, further comprising an optical flat 4 below the substrate 2, the projection of the optical flat 4 on the horizontal plane covers the substrate 2 and the optical panel 1, and the size of the optical panel 1 can be consistent with that of the substrate 2, so that the optical flat 4 protrudes around the substrate 2.

[0065] The optical platform further comprises a pressing block 5, an elastic body 6 and a damping pad 7. The bottom of the pressing block 5 is fixed to the part of the optical flat 4 around the substrate 2, which is preferably close to the edges of the substrate 2 and the optical panel 1. The pressing block 5 is also pressed against the upper surface of the optical panel 1 near the edges, thereby fixing the optical panel 1, the substrate 2 and the optical flat 4. In this embodiment, the pressing block 5 is in a generally Z-shaped form, comprising a fixed part 51 fixed to the optical flat 4, a pressing part 52 pressing the optical panel 1, and a connecting part 53 extending between the fixed part 51 and the pressing part 52, the fixed part 51 and the pressing part 52 extend reversely at the upper and lower ends of the connecting part 53. The fixed part 51 and the optical flat 4 can be fixed by screws or other fasteners. In addition, in this embodiment, the pressing block 5 is arranged at the four corners of the optical panel 1, and alternatively, more pressing blocks 5 can be arranged to press against the positions between adjacent two corners.

[0066] The elastic body 6 described above is arranged between the pressing part 52 and the optical panel 1, so that the pressing block 5 can better press the optical panel 1, and avoid relative movement between the two rigid parts.

[0067] In order to reduce the influence of the vibration generated during the experiment on the experimental data, the damping pad 7 described above is further arranged between the lower surface of the substrate 2 and the upper surface of the optical flat 4.

[0068] The optical platform described above can be applied to an optical system, and the application of the optical system will be described below.

[0069] Application Example One

[0070] Referring to Figures 7-11The optical system comprises the optical platform, the positioning block 8 and the support 9. The positioning block 8 is arranged on the upper surface of the optical panel 1 and is directly fastened to the base plate 2 by means of the screw or other fasteners. In the embodiments of the present application, the positioning block 8 is indirectly connected to the base plate 2 and is fixed to the fixing member 3 and / or the fixing member 3'. The positioning block 8 is directly connected to the optical panel 1. The connection between the positioning block 8 and the optical panel 1 is detachable. The optical instrument 100 such as a laser and a collimator can be arranged on the positioning block 8. The positioning block 8 can be provided with at least two positioning blocks 8, and the adjacent positioning blocks 8 abut each other.

[0071] The positioning block 8 comprises a base 81, a first fixing block 82 arranged on the base 81 and a second fixing block 83. The base 81 is substantially square in cross section. The first notch 812 is formed on each side wall of the base 81. The side wall refers to the corresponding wall surface of the four sides in the cross section. The first notch 812 is formed by recessing the side wall surface of the base 81 towards the inside of the base 81. The reference surface 811 is formed on the position of each side wall of the base 81 on both sides of the first notch 812. The reference surface 811 is a plane. That is, the four corners of the base 81 are respectively provided with the reference surface 811. Each corner has two reference surfaces 811 perpendicular to each other. The base 81 of the positioning block 8 is matched in shape and size with the area surrounded by the two first grooves 13 and the two second grooves 14 of the two adjacent rows on the optical platform, so as to be installed at the area. The positioning block 8 is allowed to partially exceed the area, that is, to exceed the inner side of the first groove 13 and the second groove 14, but not to exceed the outer side of the first groove 13 and the second groove 14. Here, the inner side of the first groove 13 and the second groove 14 refers to the side towards the area, and the outer side of the first groove 13 and the second groove 14 refers to the side away from the area.

[0072] The first fixing block 82 is arranged above the base 81 and is matched in shape and size with the base 81. The second notch 821 corresponding to the first notch 812 is formed on each side wall of the first fixing block 82. The first notch 812 and the second notch 821 are integrally connected. The bottom surface (the surface close to the inside of the first fixing block 82) of the second notch 821 is provided with the second fixing hole 822. Preferably, the second fixing hole 822 is a screw hole.

[0073] The first notch 812 and the second notch 821 can be cut by cutting or cold working, so as to improve the practicability. The base 81 can be made of brittle materials such as quartz, glass or ceramic, and the first fixing block 82 can be made of metal, so as to facilitate the formation of the second fixing hole 822. The base 81 and the first fixing block 82 are preferably fixed by means of gluing.

[0074] The second fixing block 83 is embedded in the first gap 812 and the second gap 821, and the second fixing block 83 is recessed from the reference surface 811 by a certain distance, i.e. when the positioning block 8 contacts with the external plane, the positioning is achieved by the reference surface 811, such as the reference surface 811 between the two adjacent positioning blocks 8 abutting each other. And the bottom surface of the second fixing block 83 is higher than the bottom surface of the base 81, so as not to contact with the optical panel 1, avoiding affecting the positioning accuracy of the positioning block 8. The second fixing block 83 can be fixed with the first fixing block 82 by a fastener such as a screw passing through the second fixing hole 822 of the first fixing block 82. The outer surface of the second fixing block 83 away from the first gap 812 and the second gap 821 is provided with at least two positioning grooves 831, one of which is embedded with a magnet, and the other is embedded with a magnetic material such as stainless steel, so that the two adjacent positioning blocks 8 can be further ensured by the second fixing block 82. The positioning groove 831 embedded with the magnetic material is larger than the positioning groove 831 embedded with the magnet, and the lateral pulling force does not occur when the different positioning blocks 8 are attracted by the second fixing block 82.

[0075] The optical instrument 100 described above can be arranged in the middle of the positioning block 8 (an installation space is formed by the middle opening of the first fixing block 81) and exposed on the upper surface of the positioning block 8.

[0076] In order to facilitate the fixation of the positioning block 8 and the optical platform, a second positioning hole 813 can be provided on the base 81, corresponding to the first positioning hole 15 on the optical panel 1, and a magnet or a magnetic material (not shown) can be embedded in the first positioning hole 15 and the second positioning hole 813, or a screw hole accessory can be added, so that the positioning block 8 and the optical panel 1 are fixed by magnetic attraction or fasteners.

[0077] Preferably, the second positioning hole 813 is embedded with a magnetic material, and the first positioning hole 15 is embedded with a magnet. Since the positioning block 8 is often circulated, if there is a magnet on the positioning block 8, it will easily attract impurities, thereby affecting the positioning accuracy. At the same time, the magnet in the first positioning hole 15 of the optical panel 1 can also be made detachable, which can be fixed in the optical panel 1 by a screw when needed, and can be removed and placed separately when not needed, so as to prevent the existence of the magnet from attracting excess impurities, thereby raising the lower surface of the base 81 and causing unevenness.

[0078] Preferably, in order to improve the flatness and positioning accuracy of the positioning block 8, the second positioning hole 813 on the positioning block 8 has four, which are uniformly distributed in the square area of the positioning block 8, and the diameter of the second positioning hole 813 is larger than the diameter of the first positioning hole 15 on the optical panel 1.

[0079] The body 9 is in a long strip shape, arranged on the upper surface of the optical panel 1, and a plurality of bodies 9 are arranged in a ring shape at the edge of the optical panel 1, and the body 9 can also be arranged as 1, 2 or 3 as needed, and 2 as shown in the figure. The body 9 is located at the outer periphery of the first groove 13 and the second groove 14. The body 9 can be fixed to the optical panel 1 by adhesive. The reference surface 811 of the positioning block 8 located at the outermost periphery can abut (tightly contact) the side of the body 9 facing the middle of the optical system, thereby facilitating the positioning of the body 9. Here, the side of the body 9 facing the middle of the optical system refers to when the body 9 is arranged in a ring shape, the positioning block 8 is arranged on the inner side of the ring-shaped space, and the positioning block 8 abuts the inner periphery of the body 9 in the ring-shaped space. The body 9 can form a third notch 91 at the position corresponding to the second fixing block 83, so as to put a magnet or a magnetic material, and realize the magnetic attraction fixing of the positioning block 8 and the body 9 through the second fixing block 83. The arrangement of the body 9 can exert force on the positioning block 8 located at the outermost periphery to better ensure the positioning of each positioning block 8.

[0080] Alternatively, the optical platform can also be in the form of embodiment one, at this time, the shape and size of the base 81 of the positioning block 8 are adapted to the panel module 11, that is, one panel module 11 corresponds to one positioning block 8 (it is not necessarily required that each panel module 11 is provided with a positioning block 8).

[0081] Since the optical panel 1 is formed by optical cold processing, a very good surface flatness is formed, and additional fixing mode accessories (such as the fixing piece 3 and the fixing piece 3' described above) can be added later, which is slightly lower than the upper surface, so as not to affect the flatness of the entire optical panel 1. At the same time, since the optical panel 1 is made of brittle material, not ductile material such as metal, in the process of use, the bump will only form a pit on the surface, not a protrusion, burr and other problems, and in the case of a small pit, it will not affect the positioning of the positioning block 8 above, thereby greatly improving the service life of the optical platform, and the expansion coefficient of the brittle material is small, which is matched with the expansion coefficient of the traditional optical element, and the temperature stability of the optical system can be greatly improved. At the same time, cooperating with the positioning block of the application, the stability of the optical system built by using the optical platform can also be greatly improved.

[0082] Application example two

[0083] Reference Figures 12-14In the present embodiment, the difference from the above-mentioned application example two is that the positioning block 8 further comprises a fixed connecting piece 84 and a top bead screw 85 with elasticity, instead of the first fixed block 82 and the second fixed block 83. The fixed connecting piece 84 is arranged on the side of the base 81 and at least partially above the base 81. The top bead screw 85 passes through the fixed connecting piece 84 from top to bottom and abuts against the upper surface of the base 81. The fixed connecting piece 84 is further fixed with the fixing piece 3' embedded on the optical panel 1 by means of screws or other fasteners, so as to press the positioning block 8 against the optical platform. Preferably, the fixed connecting piece 84 is pressed against the four corners of the base 81. Adjacent corners of adjacent positioning blocks 8 can share one fixed connecting piece 84.

[0084] In the present embodiment, since the fixed connecting piece 84 is connected with the fixing piece 3', the base 81 of the positioning block 8 can no longer be provided with the second positioning hole 813 for fixing with the optical panel 1.

[0085] Application example three

[0086] Reference is made to Figure 15 In the present embodiment, the difference from the above-mentioned application example one is that the base 81 is still fixed with the optical panel 1 by means of magnetic attraction. The first fixed block 82 and the second fixed block 83 are replaced by a fixed connecting piece 84'. The fixed connecting piece 84' is fixed with the fixing piece 3' on the optical panel 1 by means of screws or other fasteners. In addition, the positioning block 8 further comprises a top bead screw 85' which is screwed from the side of the fixed connecting piece 84' so as to abut against the bottom surface of the first notch 812 of the base 81 (the surface of the first notch 812 close to the middle of the base 81). The above-mentioned fixed connecting piece 84' is arranged only on the free surface of the positioning block 8, i.e. the surface which does not contact the abutting body 9 and other positioning blocks 8. By abutting the fixed connecting piece 84' against the base 81, the positioning block 8 can be pressed against the adjacent positioning block 8, so as to position other positioning blocks 8 which are not provided with the fixed connecting piece 84'.

[0087] In the present embodiment, since the fixed connecting piece 84' and the top bead screw 85' do not cooperate with each base 81, they do not belong to the positioning block 8.

[0088] Application example four

[0089] Reference is made to Figure 16 and Figure 17In this embodiment, the difference from the above-mentioned application example one is that the positioning block 8 is installed with a base 81 without any fixing mechanism (the positioning block 8 only has the base 81), so that other optical elements needed can be installed or removed flexibly through the second positioning hole 813 on the base 81 without affecting the positioning. As shown in the figure, the positioning block 8 is provided with an adapter 200, which is preferably in the form of a rotating disc, and the adapter 200 has a supporting leg 201, which is preferably a magnetic metal piece, penetrating downward from the upper surface of the base 81 into the first positioning hole 15 of the optical panel 1 through the second positioning hole 813, and the adapter 200, the positioning block 8 and the optical platform are fixed through the magnet 17 arranged in the first positioning hole 15. The supporting leg 201 is slightly smaller than the second positioning hole 813 to avoid affecting the positioning of the positioning block 8. Any optical element, such as a polarizer, can be installed in the adapter 200 without affecting the overall optical system.

[0090] Application example five

[0091] Reference Figure 18 and Figure 19 In this embodiment, the difference from the above-mentioned application example one is that the positioning block 8 can only include the base 81, and the base 81 no longer has the second positioning hole 813 to be fixed with the optical panel 1.

[0092] The bottom surface of the base 81 is tightly attached to the upper surface of the optical panel 1, and the optical panel 1 has a hollow inner cavity 16 formed therein, which can directly penetrate the upper surface of the optical panel 1, and the inner cavity 16 is connected to a vacuum pump (not shown) so as to be able to vacuumize the inner cavity 16 and adsorb the positioning block 8. The inner cavity 16 can also penetrate the upper surface of the optical panel 1 through the above-mentioned first positioning hole 15.

[0093] In the above-mentioned application examples, it is described that the positioning block 8 can be detachably fixed with the optical platform through fasteners, magnetic attraction, pressing blocks or vacuum, etc., so as to increase the flexibility of the optical system assembly.

Claims

1. An optical system comprising an optical platform and a positioning block (8) for setting an optical instrument (100) or an optical element, characterized in that: the optical platform comprises a substrate (2) and an optical panel (1) made of a brittle material, the optical panel (1) is arranged on the substrate (2), the upper surface of the optical panel (1) is flat, and the optical panel (1) is fixed to the upper surface of the substrate (2) by means of gluing, mechanical or optical bonding; the optical platform further comprises an optical flat (4) and a pressing block (5), the optical flat (4) is located below the substrate (2) and the projection of the optical flat (4) on the horizontal plane covers the substrate (2) and the optical panel (1), the pressing block (5) is fixed to the part of the optical flat (4) located outside the periphery of the substrate (2), and the pressing block (5) is also pressed against the position close to the edge of the upper surface of the optical panel (1), so that the pressing block (5) fixes the optical panel (1), the substrate (2) and the optical flat (4); the positioning block (8) is arranged on the upper surface of the optical panel (1), the substrate (2) and / or the optical panel (1) can be detachably connected with the positioning block (8), the connection between the substrate (2) and the positioning block (8) is direct or indirect connection; the optical panel (1) comprises at least two panel modules (11), the positioning block (8) is arranged on the panel module (11), each panel module (11) is arranged on the substrate (2) at intervals to splice the optical panel (1), a groove (12) is formed between adjacent panel modules (11), the groove (12) is recessed from the direction of the upper surface of the optical panel (1) towards the substrate (2), a fixing member (3) for connecting with the positioning block (8) is embedded in the groove (12), the fixing member (3) is lower than the upper surface of the optical panel (1), and the fixing member (3) is fixed to the substrate (2).

2. The optical system of claim 1, wherein: An elastic body (6) is arranged between the pressing block (5) and the optical panel (1).

3. An optical system comprising an optical platform and a positioning block (8) for setting an optical instrument (100) or an optical element, characterized in that: the optical platform comprises a substrate (2) and an optical panel (1) made of a brittle material, the optical panel (1) is arranged on the substrate (2), the upper surface of the optical panel (1) is flat, and the optical panel (1) is fixed to the upper surface of the substrate (2) by means of gluing, mechanical or optical bonding; the optical platform further comprises an optical flat (4) and a pressing block (5), the optical flat (4) is located below the substrate (2) and the projection of the optical flat (4) on the horizontal plane covers the substrate (2) and the optical panel (1), the pressing block (5) is fixed to the part of the optical flat (4) located outside the periphery of the substrate (2), and the pressing block (5) is also pressed against the position close to the edge of the upper surface of the optical panel (1), so that the pressing block (5) fixes the optical panel (1), the substrate (2) and the optical flat (4). The positioning block (8) is arranged on the upper surface of the optical panel (1), the substrate (2) and / or the optical panel (1) can be detachably connected with the positioning block (8), the connection between the substrate (2) and the positioning block (8) is direct or indirect connection; the optical panel (1) is formed with a groove, the groove is recessed from the direction of the upper surface of the optical panel (1) to the substrate (2), the groove is embedded with a fixing piece (3') for connecting with the positioning block (8), the fixing piece (3') is lower than the upper surface of the optical panel (1), and the fixing piece (3') is fixed with the substrate (2).

4. The optical system of claim 3, wherein: The groove comprises a plurality of first grooves (13) and second grooves (14) arranged at an angle, the first grooves (13) and the second grooves (14) are arranged in an array, each first groove (13) is arranged between two adjacent second grooves (14), and each second groove (14) is arranged between two adjacent first grooves (13), and the positioning block (8) is arranged at a region surrounded by two first grooves (13) in two adjacent rows and two second grooves (14) in two adjacent columns.

5. The optical system of claim 3, wherein: An elastic body (6) is arranged between the pressing block (5) and the optical panel (1).

6. An optical system comprising an optical platform and a positioning block (8) for arranging an optical instrument (100) or an optical element, characterized in that: The optical platform comprises a substrate (2) and an optical panel (1) made of a brittle material, the optical panel (1) is arranged on the substrate (2), the upper surface of the optical panel (1) is planar, and the optical panel (1) is fixed with the upper surface of the substrate (2) by means of gluing, mechanical or optical bonding; The optical platform further comprises an optical flat (4) and a pressing block (5), the optical flat (4) is located below the substrate (2) and the projection of the optical flat (4) on the horizontal plane covers the substrate (2) and the optical panel (1), the pressing block (5) is fixed with the part of the optical flat (4) located outside the periphery of the substrate (2), and the pressing block (5) is also pressed against the position close to the edge of the upper surface of the optical panel (1), so that the pressing block (5) fixes the optical panel (1), the substrate (2) and the optical flat (4); The positioning block (8) is arranged on the upper surface of the optical panel (1), the substrate (2) and / or the optical panel (1) can be detachably connected with the positioning block (8), the connection between the substrate (2) and the positioning block (8) is direct or indirect connection; The optical panel (1) and the positioning block (8) are fixed by magnetic attraction, the optical panel (1) is provided with a first positioning hole (15), the positioning block (8) comprises a base (81), the base (81) is provided with a second positioning hole (813), one of the first positioning hole (15) and the second positioning hole (813) is embedded with a magnet, and the other of the first positioning hole (15) and the second positioning hole (813) is embedded with a magnetic material; The positioning block (8) has at least two and is arranged adjacent to each other, and the adjacent positioning blocks (8) are magnetically attracted and adsorbed. Each positioning block (8) further comprises a first fixed block (82) and a second fixed block (83), a first notch (812) is formed on each side wall of the base (81), the side wall refers to the wall surface where the side of the cross section of the base (81) is located, the first notch (812) is formed by the side wall surface of the base (81) being recessed towards the inside of the base (81); the first fixed block (82) is arranged above the base (81), a second notch (821) corresponding to the first notch (812) is formed on each side wall of the first fixed block (82), the first notch (812) and the second notch (821) are integrated, the second fixed block (83) is embedded at the first notch (812) and the second notch (821), the second fixed block (83) is fixed with the first fixed block (82), at least two positioning grooves (831) are formed on the outer surface of the second fixed block (83) away from the first notch (812) and the second notch (821), one of the positioning grooves (831) is embedded with a magnet, and the other positioning groove (831) is embedded with a magnetic material, so that the second fixed block (83) of each positioning block (8) is magnetically adsorbed with the second fixed block (83) of the adjacent positioning block (8).

7. The optical system of claim 6, wherein: Each side wall of the base (81) at a position on both sides of the first notch (812) constitutes a reference surface (811), the reference surface (811) is a plane, the second fixed block (83) is recessed by a certain distance relative to the reference surface (811), the corresponding reference surfaces (811) between the adjacent positioning blocks (8) abut each other, and the bottom surface of the second fixed block (83) is higher than the bottom surface of the base (81).

8. The optical system of claim 6, wherein: The size of the positioning groove (831) embedded with the magnetic material is greater than the size of the positioning groove (831) embedded with the magnet.

9. The optical system of claim 6, wherein: An elastic body (6) is arranged between the pressing block (5) and the optical panel (1).

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