CN210690930U

CN210690930U - Variable-focus apochromatic full-spectrum objective lens

Info

Publication number: CN210690930U
Application number: CN201921577829.2U
Authority: CN
Inventors: 赵超; 蒋文来; 赵军
Original assignee: Shenzhen Yishan Technology Co Ltd
Current assignee: Shenzhen Yishan Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-05
Anticipated expiration: 2029-09-20

Abstract

The utility model relates to the technical field of objective lenses, and provides a variable-focus apochromatic full-spectrum objective lens, which comprises an apochromatic component, a focusing component, a zooming component and a filtering component, wherein the apochromatic component is used for optical imaging and can apochromatic; the focusing assembly is used for adjusting the image distance of the apochromatic assembly; the zooming component is used for adjusting the focal length of the apochromatic component; the filtering component comprises a light filter for filtering light rays passing through the apochromatic component, a filtering bearing piece and a filtering smooth connecting seat, wherein the filtering bearing piece is used for bearing the light filter together, a filtering bearing hole which is arranged in a penetrating mode and used for bearing the light filter is formed in the upper side face of the filtering bearing piece, a filtering smooth connecting groove which is arranged in a left-right extending mode is formed in the upper side face of the filtering smooth connecting seat, and the filtering bearing piece can slide left and right along the filtering smooth connecting groove under the action of external force so that the light filter and the apochromatic component are arranged in an up-down contraposition mode. The color filter has apochromatic effect, better white balance correction capability and good service performance.

Description

Variable-focus apochromatic full-spectrum objective lens

Technical Field

The utility model relates to an objective technical field especially relates to a variable focus, apochromatic full spectrum objective.

Background

The apochromatic objective is an one-class objective capable of eliminating chromatic aberration of various chromatic lights, has better resolution, color purity, contrast and image flatness, and is usually suitable for the fields of observation, microscopy and photography. However, the conventional apochromatic objective lens has poor white balance correction capability, so that the observed or photographed color has a certain difference from the actual primary color, i.e., a certain color shift exists, and the color quality is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can zoom, apochromatic full spectrum objective, it is relatively poor to aim at solving current apochromatic objective white balance correction ability, leads to its color of observing or shooting to have a difference with the actual primary color, the not good problem of colour development quality.

In order to achieve the above object, the utility model adopts the following technical scheme: a variable focus, apochromatic full-spectrum objective lens, comprising:

an apochromatic assembly for performing optical imaging and capable of apochromatic;

a focusing assembly for adjusting an image distance of the apochromatic assembly;

a zoom assembly for adjusting a focal length of the apochromatic assembly;

the filtering component comprises at least one optical filter, a filtering bearing piece and a filtering smooth connecting seat, wherein the optical filter is used for filtering light rays passing through the apochromatic component, the filtering bearing piece is used for bearing the optical filters together, the filtering smooth connecting seat is in sliding connection with the filtering bearing piece, the filtering bearing piece is provided with at least one filtering bearing hole which is arranged in a penetrating mode and used for bearing the optical filters on the upper side face of the filtering bearing piece, the filtering smooth connecting seat is provided with a filtering smooth connecting groove which is arranged in a left-right extending mode on the upper side face of the filtering smooth connecting seat, and the filtering bearing piece can slide left and right along the filtering smooth connecting groove under the action of external force so that one optical filter and the apo.

Further, strain smooth joint chair in strain and seted up at least one filtration constant head tank on the cell wall in smooth joint tank, the filtration carrier seted up at least one in its leading flank and/or trailing flank with the relative filtration counterpoint groove that sets up of filtration carrier hole, the filtration subassembly still include at least one fixed set up in filtration setting element in the filtration constant head tank, the filtration setting element is used for the filtration carrier is followed when straining smooth joint tank horizontal slip with the spacing cooperation in filtration counterpoint groove, so that the filtration carrier hole with apochromatic subassembly is counterpointed the accuracy.

Further, the light filtering positioning groove is equipped with two, two the light filtering positioning groove is along controlling the mutual interval setting of direction, the light filtering alignment groove is equipped with at least two, each the light filtering alignment groove is along controlling the direction interval setting in proper order, and wherein two the light filtering alignment groove is used for jointly with one the light filtering carrier hole sets up relatively, the light filtering setting element is equipped with two and fixed setting in two respectively in the light filtering positioning groove the light filtering carrier element is followed when the smooth groove horizontal slip that connects of filter, two the light filtering setting element is respectively with two the spacing cooperation of light filtering alignment groove, so that one the light filtering carrier hole with the apochromatic subassembly is counterpointed accurately.

Furthermore, the filtering bearing hole is arranged between the two filtering alignment grooves which are opposite to the filtering bearing hole.

Further, the tank bottom of light filtering constant head tank is the arc setting, the tank bottom of light filtering counterpoint groove is the arc setting, the cross sectional shape of light filtering setting element is circular setting.

Furthermore, at least one zoom fixing hole is formed in the apochromatic assembly, and the zoom assembly comprises:

the zooming guide cylinder is sleeved outside the apochromatic component, and the outer cylinder surface of the zooming guide cylinder is provided with at least one zooming guide groove which is arranged in a run-through manner and extends along the vertical direction;

the zooming linkage barrel is sleeved outside the zooming guide barrel, the outer barrel surface of the zooming linkage barrel is provided with at least one zooming linkage hole which is arranged in a run-through manner, and the zooming linkage hole is used for a zooming fastener to pass through and is connected with the zooming fixing hole through the zooming guide groove;

the zooming ring is sleeved on the zooming linkage barrel and can rotate around the optical axis under the action of external force, the zooming ring can drive a part of the apochromatic assembly and the zooming linkage barrel to synchronously slide up and down along the zooming guide groove so as to adjust the focal length of the apochromatic assembly, and the zooming ring can also be driven by the zooming linkage barrel to synchronously slide up and down along the zooming guide groove.

Furthermore, at least one focusing fixing hole is formed in the apochromatic assembly, and the focusing assembly comprises:

the focusing guide cylinder is sleeved outside the apochromatic component, and the outer cylinder surface of the focusing guide cylinder is provided with at least one focusing guide groove which is arranged in a penetrating way and extends along the vertical direction;

the focusing linkage barrel is sleeved outside the focusing guide barrel, the outer barrel surface of the focusing linkage barrel is provided with at least one focusing linkage hole which is arranged in a run-through manner, and the focusing linkage hole is used for a focusing fastener to pass through and is connected with the focusing fixing hole through the focusing guide groove;

the focusing ring is sleeved on the focusing linkage barrel and can rotate around the optical axis under the action of external force, the apochromatic assembly and the focusing linkage barrel can be driven to synchronously slide up and down along the focusing guide groove by rotating the focusing ring so as to adjust the image distance of the apochromatic assembly, and the focusing ring can also synchronously slide up and down along the focusing guide groove under the driving of the focusing linkage barrel.

Furthermore, a focusing limiting hole is formed in the focusing ring, a focusing limiting groove which is arranged in a penetrating mode and is in an arc shape is formed in the outer cylinder surface of the focusing linkage cylinder, an external fastening piece penetrates through the focusing limiting hole and is in sliding connection and matching with the focusing limiting groove, and the focusing limiting groove can be used for limiting the rotating angle of the focusing ring which rotates around the optical axis.

Further, focus a linkage section of thick bamboo including be the barrel-shaped setting focus the linkage body and be cyclic annular setting and connect in focus the bearing structure of focusing of linkage body outer tube face, it is used for supporting to focus the bearing structure focus the ring and restrict focus the ring relatively focus linkage body downstream, focus the subassembly still including cup joint in focus the linkage body and the crimping in focus the locating part of focusing of ring upside, focus the locating part and be used for restricting focus the ring relatively focus linkage body upward movement.

Furthermore, the variable-focus apochromatic full-spectrum objective also comprises a camera connecting component which is used for connecting and matching with an external camera.

The utility model has the advantages that:

the utility model provides a can zoom, apochromatic full spectrum objective drives apochromatic subassembly through zooming subassembly earlier and reciprocates along the optical axis in order to adjust apochromatic subassembly's focus, thereby can confirm the image acquisition scope earlier, after that through focusing subassembly drive apochromatic subassembly along the optical axis reciprocate in order to adjust apochromatic subassembly's image distance, it is clear to make formation of image, thereby guarantee apochromatic subassembly's imaging effect, still make its relative light filtering sliding connection seat horizontal slip through pulling the light filtering carrier, thereby can be in proper order with different light filters and apochromatic subassembly from top to bottom counterpoint the setting until selecting suitable light filter, thereby the light that the suitable light filter of accessible was to passing through apochromatic subassembly carries out filtering treatment, thereby can balance the color that apochromatic subassembly observed or shot, make it be close to reality, natural primary color, the color cast condition is reduced, so that the color rendering quality of the variable-focus apochromatic full-spectrum objective lens is improved, and the color rendering index of the variable-focus apochromatic full-spectrum objective lens is close to a spectrum of 100, namely close to a full spectrum. The utility model provides a can zoom, apochromatic full spectrum objective has and focuses, zooms the function, and has apochromatic effect, still has better white balance correction ability, and performance is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a variable-focus apochromatic full-spectrum objective lens provided in an embodiment of the present invention;

FIG. 2 is an exploded view of the variable focus apochromatic full spectrum objective lens provided in FIG. 1;

FIG. 3 is a right side cross-sectional view of the variable focus, apochromatic, full-spectrum objective lens provided in FIG. 1;

fig. 4 is a schematic perspective view of an optical filter and a filtering carrier provided in an embodiment of the present invention;

fig. 5 is a schematic perspective view of a filter element smooth connecting seat according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a focusing linkage barrel according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

It should be further noted that, in the embodiment of the present invention, the XYZ rectangular coordinate system established in fig. 1 is defined: one side in the positive direction of the X axis is defined as the front, and one side in the negative direction of the X axis is defined as the back; one side in the positive Y-axis direction is defined as the left side, and one side in the negative Y-axis direction is defined as the right side; the side in the positive direction of the Z axis is defined as the upper side, and the side in the negative direction of the Z axis is defined as the lower side.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes the specific implementation of the present invention in more detail with reference to specific embodiments:

referring to fig. 1-3, an embodiment of the present invention provides a variable focus apochromatic full-spectrum objective lens, which includes an apochromatic assembly 100, a focusing assembly 200, a zooming assembly 300, and a filtering assembly 400.

Apochromatic assembly 100 is used for optical imaging and is capable of apochromatic. It should be noted that apochromatic assembly 100 may be equivalent to a convex lens in terms of geometrical optics, i.e., optical imaging may be achieved by apochromatic assembly 100. It should be noted that, since the focal lengths of the different color lights are different, in order to avoid the phenomenon that an object point cannot be focused into a perfect image point, which causes image blurring, and/or the phenomenon that a rainbow appears at a light-dark junction of an image edge due to different magnifications, the present embodiment selects the apochromatic assembly 100 capable of apochromatic to implement image formation. The apochromatic assembly 100 is designed based on the apochromatic principle, and the detailed description of the specific structure thereof is omitted here.

Focusing assembly 200 is used to adjust the image distance of apochromatic assembly 100. It should be noted that the focusing assembly 200 can drive the entire apochromatic assembly 100 to move up and down along the optical axis (which can be equivalent to the central axis of the apochromatic assembly 100), so that the distance between the optical center of the apochromatic assembly 100 and the image forming surface, that is, the image distance of the apochromatic assembly 100 can be adjusted, and the virtual and real images can be adjusted, thereby achieving the purpose of making the image clear.

Zoom assembly 300 is used to adjust the focal length of apochromatic assembly 100. It should be noted that, a part of the apochromatic assembly 100 can be driven by the zoom assembly 300 to move up and down along the optical axis, so that the relative distance between the components of the apochromatic assembly can be adjusted, that is, the focal length of the apochromatic assembly 100 can be adjusted, thereby causing the change of the viewing angle or the image size and obtaining the zooming-in or zooming-out effect. Specifically, adjusting the focal length to be longer will narrow the viewing angle, thereby reducing the number of scenes that can be accommodated in the picture and making the picture look closer; conversely, adjusting the focal length to be shorter will widen the viewing angle, and thus will increase the number of scenes that can be accommodated in the picture, and the picture will look farther. Generally, in practical application scenarios, the focal length of the zoom assembly 300 can be adjusted to determine the image capturing range, and then the image distance of the focus assembly 200 can be adjusted to obtain a clear image.

The filter assembly 400 includes at least one filter 410 for filtering light passing through the apochromatic assembly 100, a filter carrier 420 for carrying the filters 410 together, and a filter sliding receptacle 430 in sliding fit with the filter carrier 420, the filter carrier 420 has at least one filter carrying hole 421 penetrating the filter carrier 410 on an upper side thereof, the filter sliding receptacle 430 has a filter sliding groove 431 extending in a left-right direction on an upper side thereof, and the filter carrier 420 can slide left and right along the filter sliding groove 431 under an external force, so that the filter 410 and the apochromatic assembly 100 are aligned up and down.

It should be noted that a plurality of optical filters 410 may be provided, so that different optical filters 410 may be selected according to different scenes, for example, when the variable focus apochromatism full-spectrum objective lens is used in the morning or in the evening, the observed or photographed color of the variable focus apochromatism full-spectrum objective lens is reddish, and when the variable focus apochromatism full-spectrum objective lens is used in the light of light, the observed or photographed color of the variable focus apochromatism full-spectrum objective lens is yellowish, and then the variable focus apochromatism full-spectrum objective lens can be corrected by the different optical filters 410 to be close to the actual primary colors, or one of the regions is relatively protruded. Correspondingly, the filter carrier 420 is provided with filter bearing holes 421, the number of which is equal to the number of the filters 410, and one filter bearing hole 421 is only used for installing one filter 410. Preferably, the filter bearing holes 421 are disposed in parallel in the left-right direction and are disposed on the filter bearing 420 at equal intervals, further, the filter 410 may be clamped in the filter bearing holes 421 by, but not limited to, clamping, and the filter 410 may also be connected with the filter bearing 420 by, but not limited to, screwing and disposed in alignment with the filter bearing holes 421.

It should be further noted that the filter sliding seat 430 is fixed to the variable-focus apochromatic full-spectrum objective lens, a filter sliding groove 431 is formed in the upper side surface of the filter sliding seat 430 and extends in the left-right direction, the filter sliding groove 431 is arranged to penetrate in the extending direction of the filter sliding seat, the groove width of the filter sliding groove 431 is matched with the length of the filter carrier 420 in the front-back direction, and the filter carrier 420 is placed in the filter sliding groove 431 and can slide back and forth along the extending direction of the filter sliding groove 431. Specifically, the filter carrier 420 may be pulled to slide relative to the filter connecting groove 431 until the appropriate filter 410 is moved to the position below the apochromatic assembly 100, so as to filter the light passing through the apochromatic assembly 100 by the filter 410, according to the use requirement of the variable focus apochromatic full-spectrum objective lens. Additionally, the filter sliding seat 430 further has a light hole penetrating through the bottom of the filter sliding groove 431 and allowing light to pass through, and the light hole is aligned with the apochromatic assembly 100 up and down.

The embodiment of the utility model provides a can zoom, apochromatic full spectrum objective drives apochromatic subassembly 100 through subassembly 300 of zooming earlier and reciprocates along the optical axis in order to adjust apochromatic subassembly 100's focus, thereby can confirm the image acquisition scope earlier, after that through focusing subassembly 200 drive apochromatic subassembly 100 along the optical axis reciprocate in order to adjust apochromatic subassembly 100's image distance, make formation of image clear, thereby guarantee apochromatic subassembly 100's imaging effect, still make its relative smooth connection seat 430 of filtering slide left and right through pulling filtering carrier 420, thereby can be in proper order with different light filters 410 and apochromatic subassembly 100 from top to bottom counterpoint setting until selecting suitable light filter 410, thereby the light that the suitable light filter 410 of accessible was to being passed through apochromatic subassembly 100 carries out the filtering treatment, thereby can balance the color that apochromatic subassembly 100 observed or was shot, the color rendering quality of the variable-focus apochromatic full-spectrum objective lens is improved, and the color rendering index of the variable-focus apochromatic full-spectrum objective lens is close to a spectrum of 100, namely close to a full spectrum. The embodiment of the utility model provides a can zoom, apochromatic full spectrum objective has and focuses, zooms the function, and has apochromatic effect, still has better white balance correction ability, and performance is good.

Referring to fig. 2 and 4-5, in the present embodiment, the filter sliding seat 430 has at least one filter positioning slot 432 formed on a wall of the filter sliding groove 431, the filter carrier 420 has at least one filter aligning slot 422 formed on a front side and/or a rear side thereof and disposed opposite to the filter bearing hole 421, the filter assembly 400 further includes at least one filter positioning element 440 fixedly disposed in the filter positioning slot 432, and the filter positioning element 440 is configured to be in limit fit with the filter aligning slot 422 when the filter carrier 420 slides left and right along the filter sliding groove 431, so that the filter bearing hole 421 and the apochromatic assembly 100 are aligned accurately.

It should be noted that a part of the filtering positioning element 440 is fixed in the filtering positioning groove 432, and another part of the filtering positioning element 440 is disposed opposite to the protruding filtering positioning groove 432. The filter alignment slots 422 are disposed opposite to the filter bearing holes 421, which means that at least one filter alignment slot 422 corresponds to one filter bearing hole 421, so that the filter bearing hole 421 and the apochromatic module 100 are aligned up and down accurately in a position-limited fit (i.e., aligned with the filter positioning slot 432) between the filter alignment slot 422 and the filter positioning member 440, and thus the alignment accuracy of the filter bearing hole 421 and the apochromatic module 100 can be ensured. Specifically, according to the usage requirement of the variable-focus apochromatic full-spectrum objective lens, the filter carrier 420 is pulled to slide relative to the filter positioning groove 431, and in the process, each filter positioning groove 422 is in limit fit with the filter positioning piece 440 one by one (namely, is in alignment with the filter positioning groove 432), so that each filter piece can be accurately aligned with the apochromatic assembly 100 one by one up and down until the proper filter 410 is adjusted to be below the apochromatic assembly 100, and the light passing through the apochromatic assembly 100 is filtered by the filter 410. It should be noted that, when the filter positioning groove 432, the filter positioning member 440 and the filter aligning groove 422 are used, the relative fixed state of the filter can be maintained when the white balance correction is completed (i.e. after the filter 410 is selected), so as to improve the balance of the variable-focus apochromatic full-spectrum objective lens, i.e. improve the usability of the variable-focus apochromatic full-spectrum objective lens.

Referring to fig. 2 and 4-5, in the present embodiment, there are two filter positioning slots 432, the two filter positioning slots 432 are disposed at intervals along the left-right direction, there are at least two filter alignment slots 422, each filter alignment slot 422 is disposed at intervals along the left-right direction, and the two filter alignment slots 422 are commonly used to be disposed opposite to a filter bearing hole 421, the filter positioning elements 440 are disposed two and respectively fixed in the two filter positioning slots 432, when the filter bearing member 420 slides left and right along the filter sliding groove 431, the two filter positioning elements 440 are respectively in spacing fit with the two filter alignment slots 422, so that the filter bearing hole 421 and the apochromatic assembly 100 are aligned accurately.

It should be noted that, in this embodiment, two filter alignment slots 422 are formed in one filter bearing hole 421, and correspondingly, two filter alignment slots 432 and two filter positioning members 440 are required, and the distance between the two filter positioning slots 432 is equal to the distance between the two filter alignment slots 422, so that the two filter positioning members 440 can be respectively in position-limiting fit with the two filter alignment slots 422 (the two filter alignment slots 422 are respectively aligned with the two filter positioning slots 432), and thus the filter bearing hole 421 and the filter corresponding to the two filter alignment slots 422 can be accurately aligned with the apochromatic assembly 100 up and down. Based on the above structure, the alignment precision of the filter bearing hole 421 and the apochromatic module 100 can be further ensured. Specifically, according to the usage requirement of the variable-focus apochromatic full-spectrum objective lens, the filter carrier 420 is pulled to slide relative to the filter positioning groove 431, in the process, two filter positioning grooves 422 are respectively in limit fit with the two filter positioning pieces 440 (namely, are respectively in alignment with the two filter positioning grooves 432), so that the corresponding filter pieces can be accurately aligned with the apochromatic assembly 100 up and down one by one until the proper filter piece 410 is adjusted to be below the apochromatic assembly 100, and the light passing through the apochromatic assembly 100 can be filtered through the filter piece 410. Similarly, based on the above arrangement, the relative fixed state of the optical filter can be further maintained when the white balance correction is completed (i.e. after the optical filter 410 is selected), so that the balance of the variable-focus and apochromatic full-spectrum objective lens during use can be further ensured, i.e. the use performance of the variable-focus and apochromatic full-spectrum objective lens is further improved.

Referring to fig. 2, 4-5, in the present embodiment, the filter supporting hole 421 is disposed between two filter alignment slots 422 disposed opposite thereto. It should be noted that, based on the above arrangement, the distance between the two filter alignment grooves 422 corresponding to one filter bearing hole 421 can be pulled open, so that the alignment errors between the filter alignment grooves 422 and the filter alignment grooves 432 can be reduced to some extent, and the alignment accuracy between the filter bearing hole 421 and the apochromatic module 100 can be further ensured. Preferably, as shown in fig. 4, a filter aligning slot 422 is disposed on the left side of the filter bearing hole 421 located on the leftmost side of the filter bearing 420, a filter aligning slot 422 is disposed on the right side of the filter bearing hole 421 located on the rightmost side of the filter bearing 420, and then a filter aligning slot 422 is disposed between the filter bearing holes 421, so that not only the filter bearing holes 421 and the apochromatic module 100 can be aligned accurately by aligning the two filter aligning slots 422 with the two filter aligning slots 432, but also the total number of the filter bearing holes 421 can be reduced, thereby further reducing errors thereof, and further ensuring the alignment accuracy of the filter bearing holes 421 and the apochromatic module 100.

Referring to fig. 2 and 4-5, in the present embodiment, the bottom of the filter positioning slot 432 is arc-shaped, the bottom of the filter alignment slot 422 is arc-shaped, and the cross-sectional shape of the filter positioning element 440 is circular. It should be noted that, based on the above arrangement, on one hand, the resistance of the filtering positioning member 440 to the filtering carrier 420 can be reduced in the process of pulling the filtering carrier 420 to slide relative to the filtering smooth connecting groove 431, so that the usability of the light-transmitting assembly can be improved, and the usability of the apochromatic lens can be improved; on the other hand, when the filtering positioning member 440 is matched with the filtering alignment groove 422 and the filtering positioning groove 432, the arc-shaped surfaces balance the surface stress between the filtering positioning member and the filtering alignment groove, so that the stress concentration is avoided, the service life of the light-transmitting component can be prolonged to a certain extent, namely, the service life of the apochromatic lens is prolonged to a certain extent.

Referring to fig. 1-3, in the present embodiment, the apochromatic assembly 100 is provided with at least one zoom fixing hole 101, and the zoom assembly 300 includes a zoom guide cylinder 310, a zoom linkage cylinder 320 and a zoom ring 330. The zoom guide cylinder 310 is sleeved outside the apochromatic assembly 100, and the zoom guide cylinder 310 is provided with at least one zoom guide slot 311 which is arranged in a penetrating manner and extends along the vertical direction on the outer cylinder surface; the zooming linkage cylinder 320 is sleeved outside the zooming guide cylinder 310, the zooming linkage cylinder 320 is provided with at least one zooming linkage hole 321 which is arranged in a run-through manner on the outer cylinder surface, and the zooming linkage hole 321 is used for a zooming fastener to pass through and is connected with the zooming fixing hole 101 through the zooming guide slot 311; the zoom ring 330 is sleeved on the zoom linkage cylinder 320 and can rotate around the optical axis under the action of an external force, a part of the apochromatic assembly 100 and the zoom linkage cylinder 320 can be driven to synchronously slide up and down along the zoom guide slot 311 by rotating the zoom ring 330, so as to adjust the focal length of the apochromatic assembly 100, and the zoom ring 330 can also synchronously slide up and down along the zoom guide slot 311 under the drive of the zoom linkage cylinder 320.

It should be noted that the apochromatic assembly 100, the zoom guide cylinder 310, the zoom linkage cylinder 320, and the zoom ring 330 are sequentially fitted from inside to outside. One end of the zoom fastener passes through the zoom guide slot 311 from the zoom linkage hole 321 and is connected to the zoom fixing hole 101, and the other end of the zoom fastener is stopped in the zoom linkage hole 321, so that the relative position of the zoom linkage barrel 320 and the apochromatic assembly 100 can be maintained to be fixed, and when an external force is applied to rotate the zoom ring 330, the zoom fastener is driven to drive a part of the apochromatic assembly 100 and the zoom linkage barrel 320 to synchronously slide up and down along the zoom guide slot 311, that is, a part of the apochromatic assembly 100 and the zoom linkage barrel 320 move up and down relative to the zoom guide barrel 310, and meanwhile, the zoom ring 330 also moves up and down synchronously under the drive of the zoom linkage barrel 320, so that the relative position among the apochromatic assembly 100, the zoom linkage barrel 320 and the zoom ring 330 is maintained. Based on the above arrangement, a part of the apochromatic assembly 100 can move up and down along the optical axis, so that the relative position between the components inside the apochromatic assembly 100 can be adjusted, the focal length of the apochromatic assembly 100 can be adjusted, the change of the visual angle or the image size is caused, and the zooming-in or zooming-out effect is obtained. It should be further noted that, based on the arrangement of this embodiment, the variable-focus apochromatic full-spectrum objective lens has the advantages of compact and simple structure, and is convenient for realizing zooming.

It should be added that the apochromatic assembly 100 at least includes a first lens and a second lens, the first lens and the second lens are disposed up and down along the optical axis, wherein one of the first lens and the second lens can be equivalent to a concave lens, the other can be equivalent to a convex lens, the first lens and the second lens as a whole are equivalent to a convex lens, and if the zoom fixing hole 101 is disposed on the first lens, when the zoom ring 330 is rotated by an external force, the zoom fastener can be driven to drive the first lens and the zoom linkage cylinder 320 of the apochromatic assembly 100 to synchronously slide up and down along the zoom guide slot 311, so as to adjust the relative position between the first lens and the second lens of the apochromatic assembly 100, and thus adjust the focal length of the apochromatic assembly 100, so as to change the angle of view or the size of the image, and obtain the zooming-in or zooming-out effect.

Referring to fig. 2-3 and 6, in the present embodiment, the apochromatic assembly 100 is provided with at least one focusing fixing hole 102, and the focusing assembly 200 includes a focusing guide tube 210, a focusing linkage tube 220 and a focusing ring 230.

The focusing guide tube 210 is sleeved outside the apochromatic assembly 100, and the focusing guide tube 210 is provided with at least one focusing guide groove 211 which is arranged in a penetrating manner and extends along the up-down direction on the outer tube surface; the focusing linkage barrel 220 is sleeved outside the focusing guide barrel 210, the focusing linkage barrel 220 is provided with at least one through focusing linkage hole 221 on the outer barrel surface thereof, and the focusing linkage hole 221 is used for a focusing fastener to pass through and is connected with the focusing fixing hole 102 through the focusing guide slot 211; the focusing ring 230 is sleeved on the focusing linkage barrel 220 and can rotate around the optical axis under the action of an external force, the apochromatic assembly 100 and the focusing linkage barrel 220 can be driven to synchronously slide up and down along the focusing guide groove 211 by rotating the focusing ring 230 so as to adjust the image distance of the apochromatic assembly 100, and the focusing ring 230 can also be driven by the focusing linkage barrel 220 to synchronously slide up and down along the focusing guide groove 211.

It should be noted that apochromatic assembly 100, focus guide tube 210, focus linkage tube 220, and focus ring 230 are sequentially sleeved from inside to outside. One end of the focusing fastener passes through the focusing guide slot 211 from the focusing linkage hole 221 and is connected with the focusing fixing hole 102, and the other end of the focusing fastener is stopped in the focusing linkage hole 221, so that the relative positions of the focusing linkage barrel 220 and the apochromatic assembly 100 can be maintained to be fixed, and when an external force exists to rotate the focusing ring 230, the focusing fastener is driven to drive the apochromatic assembly 100 and the focusing linkage barrel 220 to synchronously slide up and down along the focusing guide slot 211, namely, the apochromatic assembly 100 and the focusing linkage barrel 220 move up and down relative to the focusing guide barrel 210, and meanwhile, the focusing ring 230 also moves up and down synchronously under the drive of the focusing linkage barrel 220, so that the relative positions of the apochromatic assembly 100, the focusing linkage barrel 220 and the focusing ring 230 are maintained. Based on the above arrangement, the apochromatic assembly 100 can move up and down along the optical axis, so that the distance between the optical center of the apochromatic assembly 100 and the imaging surface can be adjusted, that is, the image distance of the apochromatic assembly 100 can be adjusted, and the virtual and real images can be adjusted, thereby achieving the purpose of making the images clear. It should be further noted that, based on the arrangement of this embodiment, the variable-focus apochromatic full-spectrum objective lens has the advantages of compact and simple structure, and is convenient for realizing focusing.

Referring to fig. 2-3 and 6, in the present embodiment, the focusing ring 230 is provided with a focusing limiting hole 231, the focusing linkage barrel 220 is provided with a focusing limiting groove 222 penetrating and arc-shaped on an outer barrel surface thereof, the focusing limiting hole 231 is used for an external fastening member to pass through and to be in sliding contact with the focusing limiting groove 222, and the focusing limiting groove 222 can be used for limiting a rotation angle of the focusing ring 230 in a rotation motion around the optical axis. It should be noted that one end of the external fastening member is slidably engaged with the focusing limiting groove 222, and the other end of the external fastening member is stopped in the focusing limiting hole 231, when the focusing ring 230 is rotated by an external force, the external fastening member will slide in the focusing limiting groove 222 reciprocally along with the rotation of the focusing ring 230, so that when the external fastening member moves from one end of the focusing limiting groove 222 to the other end of the focusing limiting groove 222, the angle of the focusing ring 230 rotating around the optical axis is the maximum rotation angle that the focusing ring 230 can rotate under the limitation of the focusing limiting groove 222, in other words, the radian of the focusing limiting groove 222 is equal to the maximum rotation angle that the focusing ring 230 can rotate under the limitation of the focusing limiting groove 222. Therefore, based on the arrangement of the present embodiment, the adjustment range of the focusing ring 230 can be adjusted and controlled, so as to avoid that the apochromatic assembly 100 and the focusing linkage barrel 220 are in more frictional contact with the focusing guide groove 211 when sliding to the end side along the focusing guide groove 211 on the basis of not affecting the focusing adjustment effect of the focusing ring 230, thereby prolonging the service life of the focusing assembly 200 to a certain extent.

Referring to fig. 2-3 and 6, in the present embodiment, the focusing linkage barrel 220 includes a focusing linkage body 223 disposed in a cylindrical shape, and a focusing support structure 224 disposed in an annular shape and connected to an outer cylindrical surface of the focusing linkage body 223, the focusing support structure 224 is used for supporting the focusing ring 230 and limiting the focusing ring 230 to move downward relative to the focusing linkage body 223, the focusing assembly 200 further includes a focusing limit stopper 240 sleeved on the focusing linkage body 223 and pressed against an upper side of the focusing ring 230, and the focusing limit stopper 240 is used for limiting the focusing ring 230 to move upward relative to the focusing linkage body 223. Here, the focusing interlocking hole 221 and the focusing limit groove 222 are both provided on the focusing interlocking body 223. In the embodiment, the focusing support structure 224 and the focusing limiting member 240 respectively limit the upper and lower sides of the focusing ring 230, so that the relative positions of the focusing ring 230 and the focusing linkage body 223 are fixed, and the synchronization between the focusing ring 230 and the focusing linkage body 223 can be ensured.

Referring to fig. 2-3 and 6, in the present embodiment, the zoom guide cylinder 310 is disposed at the lower side of the focus linkage cylinder 220, the zoom guide cylinder 310 includes a zoom guide body 312 disposed in a cylindrical shape and a zoom support structure 313 connected to the outer cylindrical surface of the zoom guide body 312, the zoom support structure 313 can be used to support the zoom ring 330 and the zoom linkage cylinder 320 together and prevent the zoom ring 330 and the zoom linkage cylinder 320 from falling off from the zoom guide body 312, and the zoom guide groove 311 is opened on the zoom guide body 312.

Referring to fig. 1-3, in the present embodiment, the variable focus apochromatic full-spectrum objective lens further includes a camera connecting assembly 500 for connecting and matching with an external camera. It should be noted that the external camera may include, but is not limited to, a camera, a video camera, and other devices having a photographing function, and the present embodiment may easily mount the variable-focus, apochromatic full-spectrum objective lens having apochromatic effect and better white balance correction capability on the external camera by the arrangement of the image capturing connection assembly 500, so that the external camera has better usability.

Referring to fig. 1-3, in the present embodiment, the variable-focus apochromatic full-spectrum objective lens further includes an apochromatic limiting element 600 covering the lower opening of the zoom guiding barrel 310 and used for limiting the apochromatic assembly 100 from being detached from the lower opening of the zoom guiding barrel 310, and the apochromatic limiting element 600 is further provided with a limiting light-transmitting hole penetrating through the apochromatic limiting element 600 and used for light to pass through.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A variable focus apochromatic full-spectrum objective lens, comprising:

a zoom assembly for adjusting a focal length of the apochromatic assembly;

2. The variable-focus apochromatic full-spectrum objective lens of claim 1, wherein the filter-smoothing receptacle has at least one filter-positioning slot formed on a wall of the filter-smoothing receptacle, the filter-supporting member has at least one filter-aligning slot formed on a front side and/or a rear side thereof, the filter-supporting member has at least one filter-aligning slot disposed opposite to the filter-supporting hole, the filter assembly further includes at least one filter-positioning member fixedly disposed in the filter-positioning slot, and the filter-positioning member is configured to engage with the filter-aligning slot when the filter-supporting member slides left and right along the filter-smoothing receptacle, so that the filter-supporting hole is aligned accurately with the apochromatic assembly.

3. The variable focus apochromatic full-spectrum objective lens of claim 2, wherein there are two filter positioning slots, two filter positioning slots are disposed at intervals along the left-right direction, there are at least two filter positioning slots, each filter positioning slot is disposed at intervals along the left-right direction, and two filter positioning slots are commonly used for being disposed opposite to one filter bearing hole, two filter positioning elements are disposed and respectively fixed in the two filter positioning slots, and when the filter bearing element slides left and right along the filter smooth-connecting slot, the two filter positioning elements are respectively in limit fit with the two filter positioning slots, so that the filter bearing hole and the apochromatic module are aligned accurately.

4. The variable focus apochromatic full-spectrum objective lens of claim 3 in which the filter-carrying aperture is disposed between two of the filter-aligning slots disposed opposite thereto.

5. The variable focus apochromatic full-spectrum objective lens of claim 2, wherein the filter positioning slot has an arc-shaped slot bottom, and the filter positioning element has a circular cross-sectional shape.

6. The variable focus apochromatic full-spectrum objective lens of claim 1, wherein the apochromatic assembly has at least one zoom securing aperture defined therein, the zoom assembly comprising:

7. The variable focus apochromatic full-spectrum objective lens of claim 1, wherein the apochromatic assembly has at least one focusing fixation hole formed therein, the focusing assembly comprising:

8. The variable-focus apochromatic full-spectrum objective lens of claim 7, wherein the focusing ring is provided with a focusing limiting hole, the focusing linkage barrel is provided with a focusing limiting groove which is arranged in a penetrating manner and is arranged in an arc shape on the outer barrel surface, the focusing limiting hole is used for an external fastener to pass through and is in sliding connection and matching with the focusing limiting groove, and the focusing limiting groove can be used for limiting the rotation angle of the focusing ring which rotates around the optical axis.

9. The variable-focus apochromatic full-spectrum objective lens of claim 7, wherein the focusing linkage barrel comprises a focusing linkage body arranged in a barrel shape and a focusing support structure arranged in an annular shape and connected to a barrel surface outside the focusing linkage body, the focusing support structure is configured to support the focusing ring and limit the focusing ring to move downward relative to the focusing linkage body, the focusing assembly further comprises a focusing limit member sleeved on the focusing linkage body and pressed on an upper side of the focusing ring, and the focusing limit member is configured to limit the focusing ring to move upward relative to the focusing linkage body.

10. The variable focus apochromatic full spectrum objective lens of any one of claims 1-9, further comprising a camera connection assembly for mating with an external camera connection.