CN109445059B - Lens position adjusting mechanism for optical system - Google Patents

Lens position adjusting mechanism for optical system Download PDF

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Publication number
CN109445059B
CN109445059B CN201811474208.1A CN201811474208A CN109445059B CN 109445059 B CN109445059 B CN 109445059B CN 201811474208 A CN201811474208 A CN 201811474208A CN 109445059 B CN109445059 B CN 109445059B
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CN
China
Prior art keywords
lens
sleeve
fixing seat
flat
conical
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Application number
CN201811474208.1A
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Chinese (zh)
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CN109445059A (en
Inventor
胡太富
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Wuhan Lingyun Photoelectronic System Co ltd
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Wuhan Lingyun Photoelectronic System Co ltd
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Priority to CN201811474208.1A priority Critical patent/CN109445059B/en
Publication of CN109445059A publication Critical patent/CN109445059A/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/026Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs

Abstract

The invention discloses a lens position adjusting mechanism for an optical system. It includes objective, flat lens fixing base, awl lens fixing base, outer sleeve and awl lens adjusting sleeve, outer sleeve one end and the axial spacing connection of objective tip, outer sleeve inner wall and flat lens fixing base outer wall threaded connection, the flat lens fixing base other end and awl lens adjusting sleeve one end fixed connection, awl lens adjusting sleeve inner wall and awl lens fixing base outer wall threaded connection, be equipped with first flat key structure between outer sleeve and the flat lens fixing base, be equipped with the flat key structure of second between awl lens adjusting sleeve and the awl lens fixing base, objective tip and first flat key structure one end fixed connection, the awl lens adjusting sleeve other end and the flat key structure axial spacing connection of second. The invention has compact structure, can realize the relative position of the internal optical lens only by adjusting the outer sleeve and rotating the adjusting knob, and has simple and easy adjusting operation.

Description

Lens position adjusting mechanism for optical system
Technical Field
The invention belongs to the technical field of adjustment of precise optical systems in the laser processing industry, and particularly relates to a lens position adjusting mechanism for an optical system, which can realize the random adjustment of the relative distance between a lens and the lens in a closed environment.
Background
The optical path diagram shown in fig. 1 is a common optical path design in an optical system, and includes a cone lens, two flat lenses and a set of objective lenses, and when in actual use, it is required to ensure that the distance between the cone lens and the flat lenses as a whole relative to the objective lenses is adjustable, and secondly, the cone lens and the flat lenses also achieve the purpose of adjusting the distance therebetween. In the light path diagram, the distance adjustment between the objective lens and the flat lens is sensitive to the influence of light condensation, and the diameter of a light spot is onlyCompared with the requirement that the distance between the conical lens and the flat lens is low in adjustment sensitivity, the center of the laser can be slightly deviated to cause great loss of laser energy.
The purpose of accurate processing cutting is realized in order to reach better focusing purpose in the prior art, realizes the regulation of distance between the lens through cage system structure (by structures such as guide arm, mirror holder combination form), but this method has certain drawback: the cage system belongs to an open structure, and external dust easily damages the optical system, is difficult to clean and is not beneficial to the maintenance of the optical system; second, do not have the benchmark during cage system assembly, can't accomplish during the debugging more accurately, continuous regulation between lens and the lens, the relative position between lens and the objective. The existing cage system structure is difficult to meet the requirements of dust-free and accurate and continuous adjustment.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art, and provides a lens position adjusting mechanism for an optical system.
The technical scheme adopted by the invention is as follows: a lens position adjusting mechanism for an optical system comprises an objective lens, a flat lens fixing seat for fixing a flat convex lens, a conical lens fixing seat for fixing a conical lens, an outer sleeve and a conical lens adjusting sleeve, wherein the objective lens, the flat convex lens and the conical lens are sequentially and coaxially arranged; one end of the outer sleeve is axially limited and connected with the end part of the objective lens, the inner wall of the outer sleeve is in threaded connection with the outer wall of the flat lens fixing seat, a first cavity is arranged between one end of the flat lens fixing seat and the objective lens, the other end of the flat lens fixing seat is fixedly connected with one end of the conical lens adjusting sleeve, the inner wall of the conical lens adjusting sleeve is in threaded connection with the outer wall of the conical lens fixing seat, and a second cavity is arranged between the conical lens fixing seat and the flat lens fixing seat; the cone lens adjusting mechanism is characterized in that a first flat key structure for limiting rotation of the plano-convex lens is arranged between the outer sleeve and the flat lens fixing seat, a second flat key structure for limiting rotation of the cone lens is arranged between the cone lens adjusting sleeve and the cone lens fixing seat, the end part of the objective lens is fixedly connected with one end of the first flat key structure, and the other end of the cone lens adjusting sleeve is axially limited and connected with the second flat key structure.
Furthermore, a locking sleeve ring is arranged between the objective lens and the outer sleeve, the end part of the objective lens is fixedly connected with one end of the locking sleeve ring, the other end of the locking sleeve ring is fixedly connected with the first flat key structure, the other end face of the locking sleeve ring is axially limited and connected with one end of the outer sleeve, an outer sleeve rotation reference line is axially arranged on the surface of the locking sleeve ring, and a rotation scale mark is arranged on the end face of the outer sleeve.
Furthermore, the surface of the objective lens is sleeved with a front cover, and the end part of the front cover is fixedly connected with the surface of the locking collar.
Furthermore, the other end of the outer sleeve extends to the surface of the cone lens adjusting sleeve along the axial direction, an adjusting hole is formed in the position, corresponding to the cone lens adjusting sleeve, of the outer sleeve, and a fixing sleeve used for being connected with optical equipment is further arranged at the other end of the outer sleeve.
Further, the fixed sleeve comprises an outer connecting sleeve, an inner connecting sleeve and a rear cover, the other end of the outer sleeve is fixedly connected with one end of the outer connecting sleeve, the inner connecting sleeve is fixed inside the rear cover, a third axial limiting groove is formed between the outer surface of the inner connecting sleeve and the inner surface of the rear cover, and the other end of the outer connecting sleeve is located inside the third axial limiting groove.
Further, awl lens adjusting sleeve includes rotation regulation knob and connecting sleeve, connecting sleeve and flat lens fixing base end fixed connection, the connecting sleeve surface is equipped with round V type groove along the circumference, rotation regulation knob tip is connected with the connecting sleeve surface through first ripples pearl screw, and the ball of first ripples pearl screw is located V type inslot, the spacing face of rotation regulation knob terminal surface laminating connecting sleeve.
Furthermore, the surface of the cone lens adjusting sleeve is provided with a reference scale mark, and the surface of the outer sleeve is provided with an adjusting reference line.
Furthermore, a pressing threaded sleeve is arranged between the outer sleeve and the flat lens fixing seat, the other end face of the first flat key structure is attached to the end face of the pressing threaded sleeve, a second wave bead screw is arranged in the pressing threaded sleeve, and two ends of the second wave bead screw respectively abut against the inner wall of the outer sleeve and the outer surface of the flat lens fixing seat.
Further, the first flat key structure comprises a built-in compression sleeve and a strip-shaped first flat key, the outer surface of the built-in compression sleeve is attached to the inner wall of the outer sleeve, the inner wall of the built-in compression sleeve is attached to the outer surface of the flat lens fixing seat, the end part of the built-in compression sleeve is fixedly connected with the end part of the objective lens, a first annular axial limiting groove is formed between the end surface of the built-in compression sleeve and the end surface of the objective lens, the end part of the outer sleeve is located in the first axial limiting groove, a strip-shaped first limiting groove is formed in the inner wall of the built-in compression sleeve, a strip-shaped second limiting groove is formed in the outer wall of the flat lens fixing seat corresponding to the first limiting groove, and.
Further, the second flat key structure comprises a conical lens pressing sleeve, a knob locking pressing ring and a second flat key, the outer surface of the knob locking pressing ring is attached to the inner wall of the conical lens adjusting sleeve, the inner surface of the knob locking pressing ring is attached to the outer surface of the conical lens fixing seat, the end part of the knob locking pressing ring is fixedly connected with the end part of the conical lens pressing sleeve, a second annular axial limiting groove is formed between the end surface of the knob locking pressing ring and the end surface of the conical lens pressing sleeve, the end part of the conical lens adjusting sleeve is located in the second axial limiting groove, a third strip-shaped limiting groove is formed in the inner wall of the knob locking pressing ring, a fourth strip-shaped limiting groove is formed in the position, corresponding to the third limiting groove, of the outer wall of the conical lens fixing seat, and the second flat key is located in a cavity formed.
Further, the plano-convex lens is fixed inside the plano-convex lens fixing seat through a first snap ring, the plano-convex lens comprises a first plano-convex lens and a second plano-convex lens, convex surfaces of the first plano-convex lens and the second plano-convex lens are oppositely arranged, the first plano-convex lens and the second plano-convex lens are separated through a first gasket, the plane of the first plano-convex lens is attached to the axial limiting surface of the plano-convex lens fixing seat, and the plane of the second plano-convex lens is attached to the first snap ring.
Furthermore, the conical lens is fixed inside the conical lens fixing seat through the second clamping ring, the plane of the conical lens is attached to the limiting surface of the conical lens fixing seat, and a second gasket is arranged between the conical surface of the conical lens and the second clamping ring.
The invention has the beneficial effects that:
1. the optical device is in a fully closed state, and when the distance between the lenses needing to be adjusted is required to be adjusted, the adjustment is only carried out outside, and the cleaning degree of the internal optical device cannot be influenced during adjustment.
2. The structure is compact, the adjusting operation is simple and easy, and the relative position of the internal optical lens can be realized only by adjusting the outer sleeve and rotating the adjusting knob, so that the laser energy is controlled.
3. The relative position of the lens can be accurately and continuously adjusted, and the adjustment precision can reach +/-0.025 mm.
4. The scale marks are arranged on the outer sleeve and the rotary adjusting knob, so that the adjusting process has reference, and the adjusted position and distance can be conveniently and accurately judged.
5. The function of adjusting the 2-section position distance of the multiple groups of lenses is realized, the lenses only move back and forth without rotating during adjustment, and the stability of the light-gathering function of the lenses is ensured.
Drawings
Fig. 1 is a schematic diagram of an optical path of an optical system lens.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a cross-sectional view of the present invention.
FIG. 5 is a cross-sectional view of an axicon adjustment portion of the present invention.
In the figure: 1-an objective lens; 2-locking the lantern ring; 2.1-rotation of the datum line; 3-an outer sleeve; 3.1-rotating the graduation line; 3.2-adjusting the datum line; 3.3-adjusting the hole; 4-flat lens holder; 5-axicon lens adjusting sleeve; 5.1-reference scale line; 6-conical lens fixing seat; 7-plano-convex lens; 7.1-a first plano-convex lens; 7.2 a second plano-convex lens; 8-cone lenses; 9-a first flat key structure; 10-a second flat bond structure; 11-rotating the adjusting knob; 12-a connecting sleeve; 13-V type groove; 14-first wave ball screw; 15-pressing the threaded sleeve; 16-second wave ball screw; 17-a front cover; 18-built-in compression sleeve; 19-a first flat bond; 20-a first axial limiting groove; 21-a first limit groove; 22-a second limit groove; 23-axicon compression sleeve; 24-a knob locking pressing ring; 25-a second flat bond; 26-a second axial limiting groove; 27-a third limit groove; 28-a fourth limit groove; 29-a first snap ring; 30-a first gasket; 32-a second snap ring; 33-a second gasket; 34-a fixed sleeve; 35-an outer connecting sleeve; 36-inner connecting sleeve; 37-rear cover; 38-a third axial stop groove; 39-a first cavity; 40-second cavity.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 2-5, the present invention includes an objective lens 1, a flat lens holder 4 for fixing a flat convex lens 7, a conical lens holder 6 for fixing a conical lens 8, an outer sleeve 3, and a conical lens adjusting sleeve 5, wherein the objective lens 1, the flat convex lens 7, and the conical lens 8 are coaxially arranged in sequence; one end of the outer sleeve 3 is axially limited and connected with the end part of the objective lens 1, the inner wall of the outer sleeve 3 is in threaded connection with the outer wall of the flat lens fixing seat 4, a first cavity 39 is arranged between one end of the flat lens fixing seat 4 and the objective lens 1, the other end of the flat lens fixing seat 4 is fixedly connected with one end of the conical lens adjusting sleeve 5, the inner wall of the conical lens adjusting sleeve 5 is in threaded connection with the outer wall of the conical lens fixing seat 6, and a second cavity 40 is arranged between the conical lens fixing seat 6 and the flat lens fixing seat 4; a first flat key structure 9 for limiting the rotation of the plano-convex lens 7 is arranged between the outer sleeve 3 and the flat lens fixing seat 4, a second flat key structure 10 for limiting the rotation of the conical lens 8 is arranged between the conical lens adjusting sleeve 5 and the conical lens fixing seat 6, the end part of the objective lens 1 is fixedly connected with one end of the first flat key structure 9, and the other end of the conical lens adjusting sleeve 5 is axially limited and connected with the second flat key structure 10.
In the above scheme, a locking lantern ring 2 is arranged between the objective lens 1 and the outer sleeve 3, the end part of the objective lens 1 is fixedly connected with one end of the locking lantern ring 2, the other end of the locking lantern ring 2 is fixedly connected with the first flat key structure 9, the other end surface of the locking lantern ring 2 is axially limited and connected with one end of the outer sleeve 3, a rotation reference line 2.1 is axially arranged on the surface of the locking lantern ring 2, and a rotation scale mark 3.1 is uniformly arranged on the end surface 3.5 of the outer sleeve 3 along the circumference. The surface of the objective lens 1 is sleeved with a front cover 17, and the end part of the front cover 17 is fixedly connected with the surface of the locking lantern ring 2.
In the above scheme, the other end of the outer sleeve 3 extends to the surface of the axicon lens adjusting sleeve 5 along the axial direction, the position of the outer sleeve 3 corresponding to the axicon lens adjusting sleeve 5 is provided with an adjusting hole 3.3, and the other end of the outer sleeve 3 is further provided with a fixing sleeve 34 used for connecting with an optical device. Fixed sleeve 34 includes outer connecting sleeve 35, inner connecting sleeve 36 and back lid 37, the outer sleeve 3 other end and outer connecting sleeve 35 one end fixed connection, inner connecting sleeve 36 is fixed in inside back lid 37, is equipped with the spacing recess 38 of third axial between the surface of inner connecting sleeve 36 and the internal surface of back lid 37, the outer connecting sleeve 35 other end is located the inside spacing connection of formation axial of the spacing recess 38 of third axial.
The cone lens adjusting sleeve 5 and the flat lens fixing seat 4 are fixedly connected through screws which are evenly divided into 3-M3 degrees at 120 degrees to form an adjusting whole, the flat lens fixing seat 4 and the outer sleeve 3 are in threaded adjusting connection, the left end of the outer sleeve 3 is in threaded connection with the fixing sleeve 34, the fixing sleeve 34 can be connected with external optical equipment, the right end of the outer sleeve 3 is in threaded connection with the front cover 17 through the locking lantern ring 2, the whole adjusting mechanism forms a fully-closed cavity inside, and the cleaning degree of an internal optical system cannot be influenced during adjusting.
According to the invention, a flat lens fixing seat 4 and a conical lens adjusting sleeve 5 are assembled into a whole through threads, the flat lens fixing seat 4 is connected with an outer sleeve 3 through threads, a first cavity 39 for adjusting stroke is arranged between the flat lens fixing seat 4 and an objective lens, when the outer sleeve is screwed in or out, the flat lens fixing seat 4 and the conical lens adjusting sleeve 5 can move back and forth in a telescopic mode, the purpose of changing the distance between a plano-convex lens 7 and a lens in the objective lens 1 is achieved, in order to prevent the plano-convex lens 7 from rotating in the rotating process, a first flat key structure 9 is arranged between the outer sleeve 3 and the flat lens fixing seat 4, the flat lens fixing seat 4 is guaranteed to move back and forth only when the flat lens fixing seat is adjusted in the outer sleeve and does not rotate, and therefore, the light center is not dispersed.
According to the invention, the distance between the conical lens adjusting sleeve 5 and the conical lens fixing seat 6 is adjusted in a threaded fit mode, the second cavity 40 for adjusting the stroke is arranged between the conical lens fixing seat 6 and the flat lens fixing seat 4, when the rotary adjusting knob 11 in the conical lens adjusting sleeve 5 is screwed in or out, the conical lens fixing seat 6 can move back and forth relative to the conical lens adjusting sleeve 5 in a telescopic mode, and the adjustment of the distance between the conical lens 8 and the flat convex lens 7 is realized. A second flat key structure 10 is arranged between the cone lens adjusting sleeve 5 and the cone lens fixing seat 6, so that the cone lens fixing seat 6 can only move back and forth without rotating when the inner part of the adjusting knob 11 is adjusted, and the purpose that the optical center is not dispersed when the lens focuses is achieved.
In the above scheme, awl lens adjusting sleeve 5 is including rotatory adjust knob 11 and connecting sleeve 12, connecting sleeve 12 and 4 tip fixed connection of flat lens fixing base, connecting sleeve 12 surface is equipped with round V type groove 13 along the circumference, 11 tip of rotatory adjust knob are through first ripples pearl screw 14 and connecting sleeve 12 surface connection, and first ripples pearl screw 14's ball is located V type groove 13, and the spacing face of 11 terminal surface laminating connecting sleeve 12 of rotatory adjust knob forms the spacing connection of axial. The surface of the conical lens adjusting sleeve 5 is provided with a reference scale mark 5.1, and the surface of the outer sleeve 3 is provided with an adjusting reference line 3.2 at a position corresponding to the reference scale mark.
In the above scheme, a pressing threaded sleeve 15 is arranged between the outer sleeve 3 and the flat lens fixing seat 4, the other end face of the first flat key structure 9 is attached to the end face of the pressing threaded sleeve 15, a second wave ball screw 16 is arranged in the pressing threaded sleeve 15, and two ends of the second wave ball screw 16 respectively abut against the inner wall of the outer sleeve 3 and the outer surface of the flat lens fixing seat 4. The pressing screw sleeve 15 is arranged to have a certain damping effect when the outer sleeve 3 is adjusted, so that the outer sleeve cannot be loosened too much when twisted.
In the above scheme, the first flat key structure 9 includes a built-in compression sleeve 18 and a strip-shaped first flat key 19, the outer surface of the built-in compression sleeve 18 is attached to the inner wall of the outer sleeve 3, the inner wall of the built-in compression sleeve 18 is attached to the outer surface of the flat lens fixing seat 4, the end portion of the built-in compression sleeve 18 is fixedly connected with the end portion of the locking collar 2, a circumferential first axial limiting groove 20 is arranged between the end surface of the built-in compression sleeve 18 and the end surface of the locking collar 2, the end portion 3.4 of the outer sleeve 3 is located in the first axial limiting groove 20, the inner wall of the built-in compression sleeve 18 is provided with a strip-shaped first limiting groove 21, a strip-shaped second limiting groove 22 is arranged at a position of the outer wall of the flat lens fixing seat 4 corresponding to the first limiting groove 21, the first flat key 19 is located in a cavity formed by the, the length of the first flat key 19 is smaller than that of the second limit groove 22, and the difference between the length of the first flat key 19 and the length of the second limit groove 22 is the maximum adjusting stroke of the flat lens fixing seat 4.
In the above scheme, the plano-convex lens 7 is fixed inside the plano-convex lens fixing seat 4 through the first snap ring 29, the plano-convex lens 7 comprises the first plano-convex lens 7.1 and the second plano-convex lens 7.2, the convex surfaces of the first plano-convex lens 7.1 and the second plano-convex lens 7.2 are oppositely arranged, the first plano-convex lens 7.1 and the second plano-convex lens 7.2 are separated through the first gasket 30, the axial limit surface 4.1 inside the plano-convex lens fixing seat 4 is attached to the plane 7.11 of the first plano-convex lens 7.1, and the first snap ring 29 is attached to the plane of the second plano-convex lens 7.2. The first gasket 30 comprises two relatively thin plastic optical gaskets 30.2 and one thicker brass optical gasket 30.1, the two plastic optical gaskets 30.2 respectively abutting the convex surfaces of the first plano-convex lens 7.1 and the second plano-convex lens 7.2, the brass optical gasket 30.1 being located between the two plastic optical gaskets 30.2.
In the above scheme, the second flat key structure 10 includes a cone lens pressing sleeve 23, a knob locking pressing ring 24 and a second flat key 25, the outer surface of the knob locking pressing ring 24 is attached to the inner wall of the cone lens adjusting sleeve 5, the inner surface of the knob locking pressing ring 24 is attached to the outer surface of the cone lens fixing seat 6, the end of the knob locking pressing ring 24 is fixedly connected with the end of the cone lens pressing sleeve 23, a circumferential second axial limiting groove 26 is arranged between the end surface of the knob locking pressing ring 24 and the end surface of the cone lens pressing sleeve 23, the end of the cone lens adjusting sleeve 5 is located in the second axial limiting groove 26 to form axial limiting connection, the inner wall of the knob locking pressing ring 23 is provided with a strip-shaped third limiting groove 27, a strip-shaped fourth limiting groove 28 is arranged at a position of the outer wall of the cone lens fixing seat 6 corresponding to the third limiting groove 27, and the second flat key 25 is located in a cavity formed by the, wherein the length of the second flat key 25 is equal to the length of the third limiting groove 27, the length of the second flat key 25 is less than the length of the fourth limiting groove 28, and the difference between the length of the second flat key 25 and the length of the fourth limiting groove 28 is the maximum adjusting stroke of the axicon lens fixing seat 6.
In the above scheme, the axicon lens 8 is fixed in the axicon lens fixing seat 6 through the second snap ring 32, the plane 8.1 of the axicon lens 8 is attached to the limit surface 6.1 of the axicon lens fixing seat 6, the second gasket 33 is arranged between the conical surface 8.2 of the axicon lens 8 and the second snap ring 32, and the second gasket 33 is a plastic optical gasket.
When the distance between the plano-convex lens 7 and the lens in the objective lens 1 needs to be adjusted, the outer sleeve is adjusted first to make the adjustment reference line on the outer sleeve exactly align with the reference scale line on the rotary adjusting knob, which indicates that the distance between the plano-convex lens and the lens in the objective lens is 27.18mm (the distance is determined according to actual needs). Then, the outer sleeve 3 is rotated continuously, the rotation reference line on the locking lantern ring 2 is used as the position of the reference line of the adjusting origin to be fixed, the circumference of the outer sleeve 3 is evenly divided by 60 grids of rotation scale lines 3.1, the lead of the internal rotation thread is 1.5mm, therefore, when the outer sleeve is rotated by one grid of scale lines, the lens moves forwards or backwards by 0.025mm, and the actual distance between the planoconvex lens and the lens in the objective lens is the theoretical focal size distance minus the distance of the movement or the distance of the theoretical focal size plus the distance of the backward movement. The adjusting process is continuous and controllable, and the adjusting precision is high.
When the distance between the conical lens 8 and the planoconvex lens 7 needs to be adjusted, the conical lens adjusting sleeve 5 serves as an independent unit, the conical lens fixing seat 6 is in threaded connection with the rotary adjusting knob 11, and when the rotary adjusting knob 11 is screwed in or unscrewed, the conical lens 8 in the conical lens fixing seat 6 can be adjusted in distance.
The whole optical element of the invention is positioned in a closed inner cavity, and elements for adjusting the distance are needed, such as: the adjustment of the relative position distance of the plano-convex lens and the conical lens is realized by adjusting the outer sleeve and rotating the adjusting knob respectively outside, the concentricity of the laser optical axis is not influenced, and the sealing performance of an internal optical path is not influenced, so that the cleaning degree of an optical system is ensured.
Those not described in detail in this specification are within the skill of the art.

Claims (9)

1. A lens position adjusting mechanism for an optical system, characterized in that: the device comprises an objective lens (1), a plano-convex lens fixing seat (4) for fixing a plano-convex lens, a conical lens fixing seat (6) for fixing a conical lens, an outer sleeve (3) and a conical lens adjusting sleeve (5), wherein the objective lens (1), the plano-convex lens (7) and the conical lens (8) are coaxially arranged in sequence; one end of the outer sleeve (3) is axially limited and connected with the end part of the objective lens (1), the inner wall of the outer sleeve (3) is in threaded connection with the outer wall of the flat lens fixing seat (4), a first cavity is formed between one end of the flat lens fixing seat (4) and the objective lens (1), the other end of the flat lens fixing seat (4) is fixedly connected with one end of the conical lens adjusting sleeve (5), the inner wall of the conical lens adjusting sleeve (5) is in threaded connection with the outer wall of the conical lens fixing seat (6), and a second cavity is formed between the conical lens fixing seat (6) and the flat lens fixing seat (4); a first flat key structure (9) for limiting the rotation of the plano-convex lens is arranged between the outer sleeve (3) and the flat lens fixing seat (4), a second flat key structure (10) for limiting the rotation of the conical lens is arranged between the conical lens adjusting sleeve (5) and the conical lens fixing seat (6), the end part of the objective lens (1) is fixedly connected with one end of the first flat key structure (9), and the other end of the conical lens adjusting sleeve (5) is axially limited and connected with the second flat key structure (10);
a locking sleeve ring (2) is arranged between the objective lens (1) and the outer sleeve (3), the end part of the objective lens (1) is fixedly connected with one end of the locking sleeve ring (2), the other end of the locking sleeve ring (2) is fixedly connected with the first flat key structure (9), the other end surface of the locking sleeve ring (2) is axially limited and connected with one end of the outer sleeve (3), an outer sleeve rotation reference line (2.1) is axially arranged on the surface of the locking sleeve ring (2), and a rotation scale mark (3.1) is arranged on the end surface of the outer sleeve (3); the surface of the objective lens (1) is sleeved with a front cover (17), and the end part of the front cover (17) is fixedly connected with the surface of the locking lantern ring (2);
the other end of the outer sleeve (3) extends to the surface of the cone lens adjusting sleeve (5) along the axial direction, an adjusting hole (3.3) is formed in the position, corresponding to the cone lens adjusting sleeve, of the outer sleeve (3), and a fixing sleeve (34) used for being connected with optical equipment is further arranged at the other end of the outer sleeve (3).
2. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: fixed sleeve (34) are including outer connecting sleeve (35), inner connecting sleeve (36) and back lid (37), outer sleeve (3) other end and outer connecting sleeve (35) one end fixed connection, inner connecting sleeve (36) are fixed in back lid (37) inside, are equipped with third axial spacing recess (38) between the surface of inner connecting sleeve (36) and the internal surface of back lid (37), outer connecting sleeve (35) other end is located inside third axial spacing recess (38).
3. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: awl lens adjusting sleeve (5) are including rotary adjusting knob (11) and connecting sleeve (12), connecting sleeve (12) and flat lens fixing base tip fixed connection, connecting sleeve (12) surface is equipped with round V type groove (13) along the circumference, rotary adjusting knob (11) tip is through first ripples pearl screw (14) and connecting sleeve (12) surface connection, and the ball of first ripples pearl screw (14) is located V type groove (13), the spacing face of rotary adjusting knob (11) terminal surface laminating connecting sleeve (12).
4. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: the surface of the conical lens adjusting sleeve (5) is provided with a reference scale mark (5.1), and the surface of the outer sleeve (3) is provided with an adjusting reference line (3.2) at a position corresponding to the reference scale mark.
5. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: a pressing threaded sleeve (15) is arranged between the outer sleeve (3) and the flat lens fixing seat (4), the other end face of the first flat key structure (9) is attached to the end face of the pressing threaded sleeve (15), a second wave bead screw (16) is arranged in the pressing threaded sleeve (15), and two ends of the second wave bead screw (16) respectively abut against the inner wall of the outer sleeve (3) and the outer surface of the flat lens fixing seat (4).
6. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: the first flat key structure (9) comprises a built-in pressing sleeve (18) and a strip-shaped first flat key (19), the outer surface of the built-in compression sleeve (18) is attached to the inner wall of the outer sleeve, the inner wall of the built-in compression sleeve (18) is attached to the outer surface of the flat lens fixing seat (4), the end part of the built-in compression sleeve (18) is fixedly connected with the end part of the objective lens (1), a first annular axial limiting groove (20) is arranged between the end surface of the built-in compression sleeve (18) and the end surface of the objective lens (1), the end part of the outer sleeve (3) is positioned in the first axial limiting groove (20), the inner wall of the built-in compression sleeve (18) is provided with a strip-shaped first limiting groove (21), a strip-shaped second limit groove (22) is arranged at the position of the outer wall of the flat lens fixing seat (4) corresponding to the first limit groove, the first flat key (19) is positioned in a cavity formed by the first limiting groove (21) and the second limiting groove (22).
7. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: the second flat key structure (10) comprises a conical lens pressing sleeve (23), a knob locking pressing ring (24) and a second flat key (25), the outer surface of the knob locking pressing ring (24) is attached to the inner wall of the conical lens adjusting sleeve (5), the inner surface of the knob locking pressing ring (24) is attached to the outer surface of the conical lens fixing seat (6), the end part of the knob locking pressing ring (24) is fixedly connected with the end part of the conical lens pressing sleeve (23), a second circumferential axial limiting groove (26) is arranged between the end surface of the knob locking pressing ring (24) and the end surface of the conical lens pressing sleeve (23), the end part of the conical lens adjusting sleeve (5) is positioned in the second axial limiting groove (26), a third strip-shaped limiting groove (27) is arranged on the inner wall of the knob locking pressing ring (24), and a fourth strip-shaped limiting groove (28) is arranged at the position, corresponding to the third limiting groove (27), of the outer wall of the conical, the second flat key (25) is positioned in a cavity formed by the third limiting groove (27) and the fourth limiting groove (28).
8. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: plano-convex lens (7) are fixed in plano-convex lens fixing base (4) inside through first snap ring (29), and plano-convex lens (7) include first plano-convex lens (7.1) and second plano-convex lens (7.2), first plano-convex lens (7.1) and the convex surface of second plano-convex lens (7.2) arrange relatively, separate through first packing ring (30) between first plano-convex lens (7.1) and the second plano-convex lens (7.2), the axial spacing face of the plane laminating plano-convex lens fixing base (4) of first plano-convex lens (7.1), first snap ring (29) of the plane laminating of second plano-convex lens (7.2).
9. The lens position adjustment mechanism for an optical system according to claim 1, characterized in that: the cone lens (8) is fixed in the cone lens fixing seat (6) through the second clamping ring (32), the plane of the cone lens (8) is attached to the limiting surface of the cone lens fixing seat (6), and a second gasket (33) is arranged between the conical surface of the cone lens (8) and the second clamping ring (32).
CN201811474208.1A 2018-12-04 2018-12-04 Lens position adjusting mechanism for optical system Active CN109445059B (en)

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CN109814226B (en) * 2019-04-03 2021-11-16 烟台魔技纳米科技有限公司 Lens connecting system
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