Lens assembly, lens assembly support and device

Abstract

This invention provides a lens assembly, a lens assembly support, and a device. The lens assembly support includes a support body, which includes a bottom wall and a side wall bent relative to the bottom wall. The bottom wall and the side wall form an accommodating space for accommodating the lens assembly. The side wall of the support body further forms at least one adjustment hole corresponding to each radial adjustment structure on the lens assembly. The lenses in the lens assembly move radially along the support body under the action of the adjustment structure. The bottom wall of the support body further forms multiple sets of positioning structures for driving the lens assembly to move axially along the support body. This invention can adjust the position of the installed lens assembly, reducing costs and the complexity of lens adjustment.

Description

Technical Field

[0001] This invention relates to the field of lens assembly technology, and more particularly to a lens assembly, a lens assembly support, and a device. Background Technology

[0002] In a fluorescence spectrometer system, the excitation light generated by the light source is directed onto the sample in the sample cell after the excitation lens group adjusts the optical path. The light is then reflected by the sample to the signal collection lens group, where it is further adjusted before being received by the signal processing module. The signal processing module analyzes the received light signal to complete the sample testing. Figure 1 As shown.

[0003] However, for some sample tests, when the sample holder is changed or the testing requirements change, it is necessary to modify the excitation optical path in the fluorescence spectrometer system (i.e., replace the excitation lens group of the excitation optical path) so that the excitation light after the optical path adjustment meets the testing needs of researchers. The existing excitation lens group includes the lens group and the lens group support for fixing the position of the lens group. After replacing with a new lens group, the position of the lens group needs to be repositioned. Figure 2 and Figure 3 The prior art shows two lens groups that can be set on the same lens group bracket. Although the lens groups can be replaced, the two lens groups can only be fixed on the lens group bracket and the lenses in the lens groups cannot be further adjusted. It cannot be guaranteed that both lens groups are adjusted to the design position. Although the optical paths of the two lens groups can be made as coaxial as possible through precision machining and assembly, this not only causes a significant increase in cost, but also makes it difficult to achieve the design position in the end. Summary of the Invention

[0004] To address at least one of the above problems, one object of the present invention is to provide a lens assembly bracket that allows for positional adjustment of the mounted lens assembly, thereby reducing cost and the complexity of lens adjustment. Another object of the present invention is to provide a lens assembly. A further object of the present invention is to provide a lens assembly device.

[0005] To achieve the above objectives, one aspect of the present invention discloses a lens assembly support, including a support body, the support body including a bottom wall and a side wall bent relative to the bottom wall, the bottom wall and the side wall forming an accommodating space for accommodating a lens assembly;

[0006] The sidewall of the support body is further formed with at least one adjustment hole corresponding to each radial adjustment structure on the lens group, and the lens in the lens group moves radially along the support body under the action of the adjustment structure.

[0007] The bottom wall of the support body is further formed with multiple sets of positioning structures for driving the lens group to move along the axial direction of the support body.

[0008] Preferably, the adjustment hole is a strip-shaped structure arranged along the axial direction of the support body.

[0009] Preferably, the support body further includes an edge portion connected to the sidewall;

[0010] The edge portion has a positioning hole that matches the positioning axis on the lens assembly.

[0011] Preferably, the bracket body further includes a guide rod located on the inner surface of the side wall of the bracket body, the guide rod being used to match the guide groove on the side of the lens group.

[0012] Preferably, the bottom wall of the bracket body has a through hole, and the positioning structure includes at least one pair of positioning screws disposed on the side of the bottom wall of the bracket body away from the accommodating space and a positioning nut for fixing the position of the positioning screws.

[0013] The positioning screw passes through the through hole to drive the lens assembly to move.

[0014] Preferably, the support body is provided with two adjustment holes: a first adjustment hole and a second adjustment hole.

[0015] The angle between the surfaces formed by the first adjustment hole and the second adjustment hole and the axis of the bracket body is a right angle.

[0016] The present invention also discloses a lens assembly, comprising an annular lens frame and a lens disposed within the lens frame;

[0017] The lens frame is further provided with at least one radial adjustment structure, the two ends of which are exposed on the inner and outer sides of the annular lens frame, respectively, for driving the lens to move radially;

[0018] The side of the lens frame that contacts the bottom wall of the lens group support is provided with a fixing structure for fixed connection with a set of positioning structures of the lens group support.

[0019] Preferably, the side of the lens frame that contacts the bottom wall of the lens group support is further provided with a through hole to avoid other positioning structures.

[0020] Preferably, the lens frame is provided with a positioning shaft protruding from the outer wall of the lens frame, which is used to match the positioning hole at the edge of the lens group bracket to limit the lens group.

[0021] Preferably, the outer side of the lens frame is recessed inward to form a guide groove that matches the guide rod on the inner surface of the sidewall of the lens assembly support.

[0022] Preferably, the at least one radial adjustment structure includes a first adjustment structure and a second adjustment structure;

[0023] The first adjustment structure and the second adjustment structure form right angles with the surfaces of the lens group's central axis.

[0024] The present invention also discloses a lens assembly device, comprising a lens assembly support as described above and at least one lens assembly as described above.

[0025] Preferably, it includes a lens group support, a first lens group, and a second lens group;

[0026] The lens assembly support includes a first set of positioning structures and a second set of positioning structures.

[0027] The first lens group includes a first fixing structure for fixed connection with the first group of positioning structures and a first through hole for avoiding the second group of positioning structures;

[0028] The second lens group includes a second fixing structure for fixed connection with the second group of positioning structures and a second through hole for avoiding the first group of positioning structures.

[0029] The lens assembly bracket of this invention includes a bottom wall and side walls forming an accommodating space. Different lens assemblies can be mounted on the lens assembly bracket, and the radial adjustment structure on the lens assembly can be controlled through adjustment holes on the bracket. The lenses in the lens assembly move radially under the action of the radial adjustment structure to adjust their radial positions. Furthermore, the positioning structure on the bottom wall of the bracket body can be used to drive the lens assembly to move axially to adjust the axial positions of the lenses in the lens assembly, achieving the goal of position adjustment even after the lens assembly is installed, reducing cost and the complexity of lens adjustment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This diagram illustrates the structure of a fluorescence spectrometer system in the prior art.

[0032] Figure 2 A schematic diagram of the lens group support and lens group 1 in the prior art is shown;

[0033] Figure 3 A schematic diagram of the lens group support and lens group 2 in the prior art is shown;

[0034] Figure 4This diagram illustrates a lens group support and a second lens group in a specific embodiment of the present invention.

[0035] Figure 5 This diagram illustrates a first lens group in a specific embodiment of the present invention.

[0036] Figure 6 This diagram illustrates a lens group support, a first lens group, and a second lens group according to a specific embodiment of the present invention.

[0037] Figure 7 This diagram illustrates a second lens group in a specific embodiment of the present invention.

[0038] Figure 8 This diagram illustrates a lens assembly support in a specific embodiment of the present invention. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Figure 2 A schematic diagram of a lens group bracket O and a lens group A mounted on the lens group bracket O in the prior art is shown. Figure 3 A schematic diagram of lens group B in the prior art is shown. From Figure 2 and Figure 3 As can be seen, both existing lens groups A and B include a lens frame and a lens mounted within the lens frame. The lens frames have the same outer diameter, allowing both lens groups A and B to be mounted on the lens group bracket O. However, once lens groups A and B are mounted on the lens group bracket O, they are fixed and the lens position cannot be adjusted. Adjusting the position of the lens group bracket O or employing precise manufacturing processes is required to ensure that the lens can be adjusted to the designated position after the lens group is mounted on the bracket O. This results in high costs and makes it difficult for the lens to ultimately reach the desired position.

[0041] To address the above problems, according to one aspect of the present invention, such as Figures 4-8 As shown, this embodiment discloses a lens assembly device. The lens assembly device includes a lens assembly support 1 and at least one lens assembly.

[0042] The lens assembly support 1 includes a support body, which includes a bottom wall 11 and a side wall 12 bent relative to the bottom wall 11. The bottom wall 11 and the side wall 12 form an accommodating space for accommodating the lens assembly.

[0043] The sidewall 12 of the support body is further formed with at least one adjustment hole (141, 142) corresponding to each radial adjustment structure on the lens group. The lens in the lens group moves radially along the support body under the action of the adjustment structure. The bottom wall 11 of the support body is further formed with multiple sets of positioning structures for driving the lens group to move axially along the support body.

[0044] The lens assembly (2, 3) includes an annular lens frame (21, 31) and lenses (22, 32) disposed within the lens frame. The lens frame further includes at least one radial adjustment structure (25, 35), with its two ends exposed on the inner and outer sides of the annular lens frame, respectively, for driving the lenses to move radially. The side of the lens frame that contacts the bottom wall 11 of the lens assembly support 1 is provided with a fixing structure (23, 33) for fixed connection with a set of positioning structures of the lens assembly support 1.

[0045] The lens assembly support 1 of this invention includes a bottom wall 11 and side walls 12 forming an accommodating space. Different lens assemblies can be mounted on the lens assembly support 1, and the radial adjustment structure on the lens assembly can be controlled through the adjustment holes on the lens assembly support 1. Under the action of the radial adjustment structure, the lenses in the lens assembly move radially to adjust their radial positions. Furthermore, the positioning structure of the bottom wall 11 of the support body can be adjusted to drive the lens assembly to move axially, thereby adjusting the axial positions of the lenses in the lens assembly. This achieves the goal of position adjustment even after the lens assembly is installed, reducing costs and the complexity of lens adjustment. This invention allows for simple lens assembly replacement to switch optical paths, and different lens assemblies can be installed on the lens assembly support 1 for radial and axial adjustment, enabling repeated lens positioning.

[0046] In a preferred embodiment, the adjustment hole is a strip-shaped structure arranged along the axial direction of the support body. In this preferred embodiment, the adjustment hole is strip-shaped, with its long side extending along the axial direction of the support body. This provides a certain adjustment margin for the user to adjust the axial position of the lens assembly through the positioning structure, allowing the user to still control the radial adjustment structure of the lens assembly to adjust its radial position even after axial movement.

[0047] In a preferred embodiment, the support body is provided with two adjustment holes, a first adjustment hole 141 and a second adjustment hole 142, and the angle between the surfaces formed by the first adjustment hole 141 and the second adjustment hole 142 and the axis of the support body is a right angle. In this preferred embodiment, the first adjustment hole 141 and the second adjustment hole 142 are distributed circumferentially along the side wall 12, and the line connecting the first adjustment hole 141 and the second adjustment hole 142 to the center of the circumference is perpendicular to the first adjustment hole 141 and the second adjustment hole 142. This allows for adjusting the position of the lens group in two perpendicular radial directions, and, together with adjusting the axial position of the lens group using the positioning structure, achieving three-dimensional adjustment of the lenses in the lens group. In other embodiments, the lens group may also be provided with other numbers of radial adjustment structures to achieve adjustment of the lenses in the lens group in multiple angular directions of the radial direction.

[0048] In a preferred embodiment, the support body further includes an edge portion 13 connected to the sidewall 12, the edge portion 13 having a positioning hole 16 that matches the positioning axis (26, 36) on the lens assembly. The lens frame has a positioning axis (26, 36) protruding from the outer sidewall 12 of the lens frame, for matching with the positioning hole 16 of the edge portion 13 of the lens assembly support 1 to limit the lens assembly.

[0049] It is understood that the edge opening of the support body forms a positioning hole 16, and the lens frame is provided with a positioning shaft (26, 36) protruding from the outer wall 12 of the lens frame. When the lens group is installed on the lens group support 1, the lens group is placed in the accommodating space and the positioning shaft (26, 36) is embedded in the positioning hole 16. The radial angle of the lens group installed on the lens group support 1 can be limited by the positioning hole 16, so that the lens group can be placed into the positioning groove in only one direction.

[0050] In a preferred embodiment, the support body further includes a guide rod located on the inner surface of the side wall 12 of the support body, the guide rod being used to match the guide groove (27, 37) on the side of the lens assembly. The outer side of the lens frame is recessed inward to form a guide groove (27, 37) that matches the guide rod on the inner surface of the side wall 12 of the lens assembly support 1.

[0051] It is understood that the guide rod is set on the inner surface of the side wall 12 of the bracket body. When the lens group is installed in the accommodating space of the lens group bracket 1, the guide groove (27, 37) on the side of the lens group must match the guide rod to achieve accurate positioning of the lens group installation angle. This allows the radial adjustment structure of the lens group to be exposed from the adjustment hole of the side wall 12 of the bracket body, and makes the position of the lens group correspond to the positioning structure of the bracket body, which facilitates the axial position adjustment of the lens group through the positioning structure.

[0052] In a preferred embodiment, the bottom wall 11 of the support body has a through hole, and the positioning structure includes at least one pair of positioning screws 1501 disposed on the side of the bottom wall 11 of the support body opposite to the accommodating space and positioning nuts 1502 for fixing the position of the positioning screws 1501. The positioning screws 1501 pass through the through hole to drive the lens assembly to move.

[0053] Understandably, the positioning screw 1501 passes through the through hole and contacts the lens assembly. The positioning screw 1501 moves within the through hole to drive the lens assembly to move axially. The positioning nut 1502 can fix the position of the positioning screw 1501, thereby allowing the lens assembly to be positioned in the adjusted position. Preferably, two pairs of positioning screws 1501 and positioning nuts 1502 can be provided, arranged centrally symmetrically in the bottom wall 11, thereby maintaining the stable positioning of the lens assembly.

[0054] In a preferred embodiment, the fixing structure on the lens frame can be a magnet, and the position of the magnet corresponds to the positioning structure of the lens group support 1. When the positioning structure is made of ferrous materials such as positioning screws 1501 and positioning nuts 1502, the magnet is magnetically attracted to the positioning screws 1501 and then locked by the positioning nuts 1502 to adjust and fix the lens group. In this preferred embodiment, the fixing structure is a magnet, and the positioning structure is a positioning screw 1501 and a positioning nut 1502. In other embodiments, the fixing structure can also be a positioning screw 1501 and a positioning nut 1502, and the positioning structure can be a magnet. The fixing structure and the positioning structure can also be obtained by other connection methods such as threaded connection. The present invention does not limit this.

[0055] In a preferred embodiment, the side of the lens frame that contacts the bottom wall 11 of the lens group support 1 is further provided with a through hole to avoid other positioning structures. It is understood that the through hole on the lens frame provides movement space for other positioning structures. Regardless of how the positions of other positioning structures change, they will not exert any force on the lens frame. Therefore, when replacing the lens group, it is not necessary to adjust the positions of other positioning structures. The axial position of other lens groups, positioned by the positioning structures, can still be retained after replacing the lens group. When reinstalling other lens groups, it is not necessary to readjust the axial position, and repeated adjustments are not required.

[0056] For example, in one specific example, the lens assembly includes a lens group support 1, a first lens group 2, and a second lens group 3. The lens group support 1 includes a first positioning structure 151 and a second positioning structure 152. The first lens group 2 includes a first fixing structure 23 for fixed connection with the first positioning structure 151 and a first through hole 24 that avoids the second positioning structure 152. The second lens group 3 includes a second fixing structure for fixed connection with the second positioning structure 152 and a second through hole 34 that avoids the first positioning structure 151. When the first lens group 2 is needed, it is mounted on the lens group support 1, and its axial position is adjusted and fixed using the first positioning structure 151. The first through hole 24 of the first lens group 2 corresponds to the second positioning structure 152, and the position of the second positioning structure 152 does not affect the position of the first lens group 2. When the second lens group 3 needs to be replaced, simply remove the first lens group 2 without adjusting the first positioning structure 151. Install the second lens group 3 on the lens group bracket 1, adjust its position using the second positioning structure 152, and then fix it in place. At this point, the second through hole of the second lens group 3 corresponds to the first positioning structure 151, and the position of the first positioning structure 151 does not affect the position adjustment of the second lens group 3. When reinstalling the first lens group 2, simply install it on the lens group bracket 1. The first positioning structure 151 remains in the position it was previously adjusted for, eliminating the need for repeated adjustments to the first lens group 2.

[0057] In this specific example, the first lens group 2, the second lens group 3, and the lens group bracket 1 on which the first lens group 2 and the second lens group 3 can be installed are used for illustration. In other embodiments, multiple different lens groups and a lens group bracket 1 with a positioning structure corresponding to multiple lens groups can be designed by adjusting the position of the fixing structure and the through hole. Different lens groups can install different lenses, and multiple optical paths can be switched by changing different lens groups. This invention does not limit this.

[0058] It should be noted that the lens group device of the present invention can be applied to a fluorescence spectrometer system or other systems that use a lens group device. The lens group device can be set in the excitation optical path of the fluorescence spectrometer system or in other optical paths. The present invention does not limit this, and other lens group devices based on the same principle should also be within the protection scope of the present invention.

[0059] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0060] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A lens assembly bracket, characterized in that, Includes a support body, the support body including a bottom wall and a side wall bent relative to the bottom wall, the bottom wall and the side wall forming an accommodating space for accommodating a lens assembly; The sidewall of the support body is further formed with at least one adjustment hole corresponding to each radial adjustment structure on the lens group, and the lens in the lens group moves radially along the support body under the action of the adjustment structure. The bottom wall of the support body is further formed with multiple sets of positioning structures for driving the lens group to move along the axial direction of the support body. The bracket body further includes a guide rod located on the inner surface of the side wall of the bracket body, the guide rod being used to match the guide groove on the side of the lens group; The bottom wall of the bracket body has a through hole, and the positioning structure includes at least one pair of positioning screws located on the side of the bottom wall of the bracket body away from the accommodating space and a positioning nut for fixing the position of the positioning screws. The positioning screw passes through the through hole to drive the lens assembly to move; The adjustment hole is a strip-shaped structure arranged along the axial direction of the bracket body. The long side of the strip extends along the axial direction of the bracket body, providing a certain adjustment margin for the user to adjust the axial position of the lens group through the positioning structure. This allows the user to still control the radial adjustment structure of the lens group to adjust its radial position after the lens group has been moved axially.

2. The lens assembly bracket according to claim 1, characterized in that, The support body further includes an edge portion connected to the side wall; The edge portion has a positioning hole that matches the positioning axis on the lens assembly.

3. The lens assembly bracket according to claim 1, characterized in that, The support body is provided with two adjustment holes: a first adjustment hole and a second adjustment hole. The angle between the surfaces formed by the first adjustment hole and the second adjustment hole and the axis of the bracket body is a right angle.

4. A lens assembly, characterized in that, It includes a ring-shaped lens frame and a lens disposed within the lens frame; The lens frame is further provided with at least one radial adjustment structure, the two ends of which are exposed on the inner and outer sides of the annular lens frame, respectively, for driving the lens to move radially; The side of the lens frame that contacts the bottom wall of the lens group bracket is provided with a fixing structure for fixed connection with a set of positioning structures of the lens group bracket. The lens frame has a through hole on the side that contacts the bottom wall of the lens group support to avoid other positioning structures. The through hole provides movement space for the other positioning structures, so that the position of the other positioning structures does not need to be adjusted when the lens group is replaced. The at least one radial adjustment structure includes a first adjustment structure and a second adjustment structure; the angles between the first adjustment structure and the surface formed by the second adjustment structure and the central axis of the lens group are right angles. The lens group bracket is the lens group bracket according to any one of claims 1 to 3.

5. The lens assembly according to claim 4, characterized in that, The lens frame is provided with a positioning shaft protruding from the outer wall of the lens frame, which is used to match the positioning hole at the edge of the lens group bracket to limit the lens group.

6. The lens assembly according to claim 4, characterized in that, The outer side of the lens frame is recessed inward to form a guide groove that matches the guide rod on the inner surface of the side wall of the lens group support.

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