A camera optical path device and a solid microscope

Abstract

This utility model relates to the technical field of microscopes, and more particularly to an imaging optical path device and a solid microscope, including a beam splitting mechanism, an imaging optical path tube, and an industrial camera. A beam splitting prism is disposed within the beam splitting mechanism, which is connected to a continuous zoom objective lens group and a prism steering group. One side of the beam splitting mechanism is connected to one end of the imaging optical path tube, and the other end of the imaging optical path tube is connected to the industrial camera. The beam splitting prism is configured to split the object beam incident through the light entrance aperture into the prism steering group and the imaging optical path tube. The imaging optical path tube is hollow, and a lens group is disposed within it. By setting the lens group within the imaging optical path tube to adjust the beam aperture and focal length of the object beam, the technical problem of incompatibility between the imaging focal length of the existing imaging optical path device and the industrial camera, resulting in significant off-axis vignetting, is solved, improving imaging clarity and ensuring the detection quality of the industrial camera.

Description

Technical Field

[0001] This utility model relates to the technical field of microscopes, and in particular to a camera optical path device and a solid microscope. Background Technology

[0002] A stereomicroscope is an advanced visual instrument that uses visible light as an illumination source. Its key feature is its ability to provide an upright, three-dimensional image of the observed object, allowing the observer to understand its three-dimensional structure more intuitively and clearly. Its working principle involves initially magnifying the object through a precisely designed objective lens system, followed by further magnification through the eyepiece, ultimately presenting the observer with a magnified image with depth perception. Industrial cameras, on the other hand, are typically equipped with high-resolution sensors (such as 4K or higher), capturing clearer details than ordinary microscope cameras, making them suitable for inspecting minute structures (such as semiconductor defects and precision parts).

[0003] Currently, existing stereo microscopes use an external industrial camera as the imaging optical path. Its main function is to enhance imaging performance, expand application scenarios, and meet the high requirements of industrial inspection. The imaging optical path device includes a beam splitter and an industrial camera. The beam splitter splits the light path in two, projecting the light onto the eyepiece and the industrial camera respectively.

[0004] However, existing camera optical path devices suffer from technical problems such as incompatibility between the imaging focal length and the industrial camera, and significant off-axis vignetting, due to the optical path passing through the beam splitting mechanism and multiple lenses and prisms in the objective lens group. Utility Model Content

[0005] The purpose of this utility model is to provide a camera optical path device to solve the technical problem in the prior art that the imaging focal length is not compatible with the industrial camera and the off-axis vignetting is large because the optical path passes through the beam splitting mechanism and multiple lenses and prisms in the objective lens group.

[0006] In the first aspect, the present invention provides a camera optical path device, which is disposed between the continuous zoom objective lens group and the prism turning group of a solid microscope, and includes a beam splitting mechanism, a camera optical path tube and an industrial camera.

[0007] The beam splitting mechanism is equipped with a beam splitting prism. The bottom of the beam splitting mechanism is used to communicate with the continuous zoom objective lens group, the top of the beam splitting mechanism is used to communicate with the prism turning group, one side of the beam splitting mechanism is connected to one end of the camera optical path tube, and the other end of the camera optical path tube is connected to the industrial camera. The beam splitting prism is configured to split the incident image beam into the prism turning group and the camera optical path tube.

[0008] The camera optical path tube is hollow, and a lens group is provided inside the camera optical path tube. The lens group is configured to adjust the focal length and beam aperture of the image beam.

[0009] Furthermore, the camera optical path device also includes a lens tube, which is slidably disposed in the camera optical path tube along the axial direction of the camera optical path tube, and the lens group is disposed in the lens tube.

[0010] Furthermore, the camera optical path device also includes an adjustment ring, which is sleeved on the outside of the camera optical path cylinder. The adjustment ring is threadedly connected to the camera optical path cylinder and is drivenly connected to the lens cylinder to drive the lens cylinder to slide along the axial direction of the camera optical path cylinder.

[0011] Furthermore, the camera optical path device also includes a guide pin, an arc-shaped groove is provided in the adjusting ring, a through hole is provided in the camera optical path tube, an installation groove is provided on the outer wall of the lens tube, one end of the guide pin is provided in the installation groove, and the other end of the guide pin passes through the through hole and is slidably disposed in the arc-shaped groove.

[0012] Furthermore, the lens group includes a plurality of lenses arranged at intervals in sequence;

[0013] At least one of the lenses is configured as a positive lens, at least one of the lenses is configured as a negative lens, and the combined focal length of the lens group is configured to be between 63mm and 77mm.

[0014] Furthermore, a spacer is provided between any two adjacent lenses, and the spacer abuts against the two adjacent lenses respectively.

[0015] Furthermore, the camera optical path device also includes a pressure ring, which is disposed at one end inside the lens barrel, and one side of the pressure ring abuts against the lens.

[0016] Furthermore, the beam-splitting mechanism is provided with a beam-splitting prism mount, the beam-splitting prism is disposed within the beam-splitting prism mount, the top of the beam-splitting prism mount is provided with an upper through hole, the top of the beam-splitting prism mount is used to connect with the prism turning assembly, the bottom of the beam-splitting prism mount is provided with a lower through hole, the bottom of the beam-splitting prism mount is used to connect with the continuous zoom objective lens assembly, the beam-splitting prism mount is provided with a side through hole, and the camera optical path tube is disposed facing the side through hole.

[0017] Furthermore, the beam splitting mechanism also includes a prism pad, which is disposed between the beam splitting prism and the beam splitting prism base.

[0018] Secondly, this utility model also provides a solid microscope, including the aforementioned imaging optical path device.

[0019] Compared with the prior art, the present invention provides a camera optical path device, including a beam splitting mechanism, a camera optical path tube, and an industrial camera; a beam splitting prism is disposed inside the beam splitting mechanism, the bottom of the beam splitting mechanism is used to communicate with a continuous zoom objective lens group, the top of the beam splitting mechanism is used to communicate with a prism steering group, one side of the beam splitting mechanism is connected to one end of the camera optical path tube, and the other end of the camera optical path tube is connected to the industrial camera; the beam splitting prism is configured to split the incident image beam into the prism steering group and the camera optical path tube; the camera optical path tube is hollow, and the camera optical path... The tube contains a lens group configured to adjust the focal length and aperture of the image beam. By adjusting the aperture and focal length of the image beam through the lens group in the camera optical path tube, the split image beam is matched with the parameters of the industrial camera. This solves the technical problem in existing camera optical path devices where the imaging focal length is incompatible with the industrial camera and there is significant off-axis vignetting due to the optical path passing through the beam splitting mechanism and multiple lenses and prisms in the objective lens group. This improves image clarity and ensures the inspection quality of the industrial camera. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the camera optical path device provided in the embodiment of this utility model;

[0022] Figure 2 This is an exploded view of the structure of the beam splitting mechanism and the camera optical path tube in the camera optical path device provided in the embodiment of this utility model;

[0023] Figure 3 This is a cross-sectional view of the camera optical path tube in the camera optical path device provided in the embodiment of this utility model.

[0024] Figure label:

[0025] 10. Continuous zoom objective lens group; 20. Prism steering group;

[0026] 100. Beam splitting mechanism; 110. Beam splitting prism; 120. Beam splitting prism mount; 130. Prism gasket;

[0027] 200. Camera optical path tube; 210. Lens group; 220. Lens tube; 230. Adjustment ring; 240. Guide pin; 250. Spacer; 260. Pressure ring;

[0028] 300. Industrial cameras. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] Example 1

[0037] like Figures 1 to 3 As shown, this embodiment of the present invention provides an imaging optical path device, disposed between the continuous zoom objective lens group 10 and the prism turning group 20 of a stereomicroscope, including a beam splitting mechanism 100, an imaging optical path tube 200, and an industrial camera 300; a beam splitting prism 110 is disposed inside the beam splitting mechanism 100, the bottom of the beam splitting mechanism 100 is used to communicate with the continuous zoom objective lens group 10, the top of the beam splitting mechanism 100 is used to communicate with the prism turning group 20, one side of the beam splitting mechanism 100 is connected to one end of the imaging optical path tube 200, and the other end of the imaging optical path tube 200 is connected to the industrial camera 300. The beam splitting prism 110 is configured to split the incident image beam into the prism turning group 20 and the imaging optical path tube 200; the imaging optical path tube 200 is hollow, and a lens group 210 is disposed inside the imaging optical path tube 200, the lens group 210 being configured to adjust the focal length and beam aperture of the image beam.

[0038] That is, the imaging optical path device provided in this embodiment of the utility model adjusts the beam aperture and focal length of the image beam by setting a lens group 210 in the imaging optical path tube 200, so that the image beam after beam splitting matches the parameters of the industrial camera 300. This solves the technical problem in the prior art that the imaging focal length of the imaging optical path device is not compatible with the industrial camera 300 and the off-axis vignetting is large because the optical path passes through the beam splitting mechanism 100 and multiple lenses and prisms in the objective lens group. This improves the imaging clarity and ensures the detection quality of the industrial camera 300.

[0039] Specifically, the beam splitting mechanism 100 is disposed between the continuous zoom objective lens group 10 and the prism steering group 20. Its bottom is connected to the continuous zoom objective lens group 10 by bolts, thereby receiving the objective lens beam emitted by the continuous zoom objective lens. The top of the beam splitting mechanism 100 is connected to the prism steering group 20 by bolts, while the imaging optical path tube 200 is disposed horizontally on one side of the beam splitting mechanism 100. The beam splitting prism 110 is disposed directly above the continuous zoom objective lens group 10, thereby receiving the image beam from the continuous zoom objective lens group 10 and splitting it into horizontal and vertical directions, and then transmitting the image beam to the prism steering group 20 and the imaging optical path tube 200. The other end of the camera optical path tube 200 is connected to the industrial camera 300 by bolts. The lens group 210 is set in the camera optical path tube 200 along the optical path. The lens group 210 can be set as a positive lens group 210 or a negative lens group 210 according to the actual needs of the industrial camera 300, thereby narrowing or widening the beam aperture and adjusting the focal length of the object image at the same time.

[0040] Furthermore, the camera optical path device also includes a lens tube 220, which is slidably disposed in the camera optical path tube 200 along the axial direction of the camera optical path tube 200, and a lens group 210 is disposed in the lens tube 220.

[0041] Specifically, the lens tube 220 is cylindrical and hollow, with its outer diameter slightly smaller than the inner diameter of the imaging optical path tube 200, thus facilitating its sliding placement within the imaging optical path tube 200. The lens assembly 210 is snapped into the lens tube 220. By sliding the lens tube 220 within the imaging optical path tube 200, the distance of the lens assembly 210 relative to the industrial camera 300 and the beam splitter 110 can be adjusted to meet the requirements of the imaging plane diameter and magnification of the industrial camera 300, compensate for manufacturing errors in the industrial camera 300 and the objective lens system, and ensure synchronized image plane sharpness between the industrial camera 300 and the eyepiece system.

[0042] Furthermore, the camera optical path device also includes an adjustment ring 230, which is sleeved on the outside of the camera optical path cylinder 200. The adjustment ring 230 is threadedly connected to the camera optical path cylinder 200 and is drivenly connected to the lens cylinder 220 so as to drive the lens cylinder 220 to slide along the axial direction of the camera optical path cylinder 200.

[0043] Specifically, the adjusting ring 230 is circular and fitted onto the outside of the camera optical path tube 200. The outer wall of the camera optical path tube 200 has external threads, and the adjusting ring 230 has internal threads, allowing for a threaded connection. The adjusting ring 230 and the lens tube 220 can be connected via a connecting rod or a magnetic connector. Thus, the user only needs to turn the adjusting ring 230 to slide the lens tube 220 along the axial direction of the camera optical path tube 200, easily adjusting the position of the lens assembly 210.

[0044] Preferably, the camera optical path device further includes a guide pin 240, an arc-shaped groove is provided in the adjusting ring 230, a through hole is provided in the camera optical path tube 200, an installation groove is provided on the outer wall of the lens tube 220, one end of the guide pin 240 is provided in the installation groove, and the other end of the guide pin 240 passes through the through hole and is slidably provided in the arc-shaped groove.

[0045] Specifically, the guide pin 240 is a cylindrical pin. The through hole is an elongated slot on the outer wall of the camera optical path tube 200 along the axial direction. The outer wall of the lens tube 220 is provided with a mounting groove, which is perpendicular to the axial direction of the lens tube 220. This allows the guide pin 240 to pass through the elongated slot and slide along it. The adjusting ring 230 has an arc-shaped groove, and the other end of the guide pin 240 slides along the arc-shaped groove. The arc-shaped groove can be designed according to actual adjustment needs. In this embodiment, the arc-shaped groove is a groove arranged circumferentially around the adjusting ring 230. Thus, when the adjusting ring 230 is turned, the adjusting ring 230 rotates spirally along the axial direction of the camera optical path tube 200, the guide pin 240 slides along the arc-shaped groove, and drives the lens tube 220 to move along the axial direction of the camera optical path tube 200, adjusting the position of the lens tube 220.

[0046] Furthermore, the lens group 210 includes a plurality of lenses arranged at intervals in sequence; at least one lens is configured as a positive lens, at least one lens is configured as a negative lens, and the combined focal length of the lens group 210 is configured as 63mm to 77mm.

[0047] Specifically, in this embodiment, the lens group 210 is provided with four lenses arranged at intervals, namely a positive lens, a negative lens, a positive lens, and a negative lens respectively; the beam is adjusted sequentially by the spaced positive lens, negative lens, positive lens, and negative lens to make the beam aperture consistent with the beam aperture required by the industrial camera 300, and the combined focal length of the lens group 210 is set to 70mm to meet the focal length requirements of the industrial camera 300.

[0048] Furthermore, a spacer 250 is provided between any two adjacent lenses, and the spacer 250 abuts against the two adjacent lenses respectively.

[0049] Specifically, a spacer 250 is provided between each of the two lenses. The spacer 250 is circular, with its two ends abutting against the adjacent lens to fix the lens in place. By providing the spacer 250 between the lenses, the accuracy and stability of the spacing between the relevant lenses can be ensured.

[0050] Furthermore, the camera optical path device also includes a pressure ring 260, which is disposed at one end inside the lens barrel 220, and one side of the pressure ring 260 abuts against the lens.

[0051] Specifically, the pressure ring 260 is disposed inside one end of the lens tube 220, and its side closest to the inside of the lens tube 220 abuts against the lens closest to the outside of the lens tube 220, thereby fixing the lens inside the lens tube 220, ensuring the lens is in a stable position, and thus ensuring that the optical axis of the lens group 210 is not off-center.

[0052] Furthermore, the beam splitting mechanism 100 is provided with a beam splitting prism mount 120, and a beam splitting prism 110 is disposed inside the beam splitting prism mount 120. The top of the beam splitting prism mount 120 is provided with an upper through hole, and the top of the beam splitting prism mount 120 is used to connect with the prism turning assembly 20. The bottom of the beam splitting prism mount 120 is provided with a lower through hole, and the bottom of the beam splitting prism mount 120 is used to connect with the continuous zoom objective lens assembly 10. The beam splitting prism mount 120 is provided with a side through hole, and the camera optical path tube 200 is positioned facing the side through hole.

[0053] Specifically, the beam-splitting prism mount 120 is square and hollow. It has a circular upper through-hole at the top, connecting to the prism steering assembly 20 via bolts. A circular lower through-hole at the bottom connects to the continuous zoom objective lens assembly 10 via bolts. The beam-splitting prism mount 120 has a side through-hole along the horizontal direction, with the camera optical path tube 200 facing the side through-hole and connected to the beam-splitting prism mount 120 via bolts. The beam-splitting prism 110 is fixed inside the beam-splitting prism mount 120, with its incident surface facing the continuous zoom objective lens assembly 10. Two beams exit towards the prism steering assembly 20 and the camera optical path tube 200, respectively. In this embodiment, the beam-splitting prism mount 120 also contains a type 2 Proprism, which works in conjunction with the beam-splitting prism 110 to achieve the requirements of reversing the inverted image formed by the objective lens system and splitting the camera optical path.

[0054] Furthermore, the beam splitting mechanism 100 also includes a prism spacer 130, which is disposed between the beam splitting prism 110 and the beam splitting prism base 120.

[0055] Specifically, the prism spacer 130 can be configured according to the shape of the beam splitter 110. It can be made of flexible material and fill the gap between the beam splitter 110 and the beam splitter prism base 120, thereby ensuring the beam splitter 110 is fixed and stable.

[0056] Secondly, this utility model also provides a solid microscope, including the above-mentioned camera optical path device, which has all the technical features of the above-mentioned camera optical path device and can naturally achieve all the technical effects of the above-mentioned camera optical path device. This embodiment will not be described in detail.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A camera optical path device, disposed between the continuous zoom objective lens group (10) and the prism turning group (20) of a stereo microscope, characterized in that, It includes a beam splitter (100), a camera optical path tube (200), and an industrial camera (300); The beam splitting mechanism (100) is provided with a beam splitting prism (110). The bottom of the beam splitting mechanism (100) is used to communicate with the continuous zoom objective lens group (10). The top of the beam splitting mechanism (100) is used to communicate with the prism turning group (20). One side of the beam splitting mechanism (100) is connected to one end of the camera optical path tube (200). The other end of the camera optical path tube (200) is connected to the industrial camera (300). The beam splitting prism (110) is configured to split the incident image beam into the prism turning group (20) and the camera optical path tube (200). The camera optical path tube (200) is hollow, and a lens group (210) is provided inside the camera optical path tube (200). The lens group (210) is configured to adjust the focal length and beam aperture of the image beam.

2. The imaging light path arrangement according to claim 1, characterized in that The camera optical path device further includes a lens tube (220), which is slidably disposed on the camera optical path tube (200) along the axial direction of the camera optical path tube (200), and the lens group (210) is disposed on the lens tube (220).

3. The optical path device according to claim 2, wherein The camera optical path device further includes an adjustment ring (230), which is sleeved on the outside of the camera optical path cylinder (200). The adjustment ring (230) is threadedly connected to the camera optical path cylinder (200) and is drivenly connected to the lens cylinder (220) to drive the lens cylinder (220) to slide along the axial direction of the camera optical path cylinder (200).

4. The optical path device according to claim 3, wherein The camera optical path device also includes a guide pin (240), an arc-shaped groove is provided in the adjusting ring (230), a through hole is provided in the camera optical path tube (200), an installation groove is provided on the outer wall of the lens tube (220), one end of the guide pin (240) is provided in the installation groove, and the other end of the guide pin (240) is slidably provided in the arc-shaped groove through the through hole.

5. The optical path arrangement according to any one of claims 2 to 4, characterized in that The lens group (210) includes a plurality of lenses arranged at intervals in sequence; At least one of the lenses is configured as a positive lens, at least one of the lenses is configured as a negative lens, and the combined focal length of the lens group (210) is configured as 63mm to 77mm.

6. The optical path device according to claim 5, wherein A spacer (250) is provided between any two adjacent lenses, and the spacer (250) abuts against the two adjacent lenses respectively.

7. The optical path device according to claim 5, wherein The camera optical path device also includes a pressure ring (260), which is disposed at one end inside the lens barrel (220), and one side of the pressure ring (260) abuts against the lens.

8. The optical path arrangement according to any one of claims 1 to 4, characterized in that The beam splitting mechanism (100) is provided with a beam splitting prism mount (120), the beam splitting prism (110) is disposed in the beam splitting prism mount (120), the top of the beam splitting prism mount (120) is provided with an upper through hole, the top of the beam splitting prism mount (120) is used to connect with the prism turning assembly (20), the bottom of the beam splitting prism mount (120) is provided with a lower through hole, the bottom of the beam splitting prism mount (120) is used to connect with the continuous zoom objective lens assembly (10), the beam splitting prism mount (120) is provided with a side through hole, and the camera optical path tube (200) is disposed facing the side through hole.

9. The optical path arrangement according to claim 8, characterized in that The beam splitting mechanism (100) further includes a prism pad (130), which is disposed between the beam splitting prism (110) and the beam splitting prism base (120).

10. An entity microscope characterized by, The camera optical path device includes any one of claims 1-9.

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