TWM518770U - Lens and lens barrel assembly structure - Google Patents

Description

Lens and barrel combined structure

The invention relates to a lens and a barrel combined structure, in particular to a lens and barrel combination structure in which the axial line of the lens can automatically overlap with the axis of the lens barrel during the process of fixing the ring and the barrel.

As shown in FIG. 5, the conventional lens and lens barrel coupling structure includes a lens barrel 70, at least one lens 80, and at least one fixing ring 90. The lens barrel 70 is a horizontally disposed cylinder body, and the inner circumference of the lens barrel 70 An abutting ring rib 71 is formed on the front end of the lens barrel 70 so that the lens barrel 70 forms a front opening 701 at the abutting ring rib 71. The inner circumferential surface of the lens barrel 70 is recessed with a positioning ring groove at the rear end thereof. 72, a rear opening 702 is formed in the positioning ring groove 72 of the lens barrel 70, and the at least one lens 80 is engaged with the inner circumferential surface of the lens barrel 70 and abuts against the abutting ring rib 71, the at least one fixing The ring 90 is screwed to the positioning ring groove 72 of the lens barrel 70 such that the at least one fixing ring 90 is disposed adjacent to the rear opening 702, and the at least one fixing ring 90 abuts against the at least one lens 80, wherein When at least one lens 80 is a convex lens, the convex lens is pushed by the at least one fixing ring 90 during the locking of the at least one fixing ring 90 with the lens barrel 70, and the convex lens is automatically opposed to the lens barrel 70. Tilting until the front edge of the convex lens abuts against the abutting ring rib 71, and the front ring of the fixing ring 90 Abutting against the rear edge of the convex lens, the convex lens is automatically centered with respect to the lens barrel 70, that is, the axis line of the convex lens overlaps with the axial line of the lens barrel 70. .

However, as shown in FIG. 6, when the at least one lens 80A is a convex-concave lens, the flat chamfer 81A of the convex-concave lens is formed on the front edge of the convex-concave lens, and the front side and the outer ring surface of the convex-concave lens are respectively Abutting against the annular rib 71 of the lens barrel 70 and the inner ring surface of the lens barrel 70, the contour and shape of the flat chamfer 81A are easily deformed due to deformation during the processing of the convex-concave lens. During the process of screwing the fixing ring 90 relative to the lens barrel 70, the convex-concave lens is inclined with respect to the lens barrel 70, so that the axis line of the convex-concave lens cannot overlap with the axis of the lens barrel 70.

As shown in FIG. 7, when the lens 80B is a double concave lens, the flat chamfer 81B of the biconcave lens is also formed on the periphery of the front ring of the biconcave lens, also because the contour and shape of the flat chamfer 81B of the biconcave lens are During the processing, the error is easily caused by the deformation, so that the axis line of the biconcave lens cannot overlap with the axis of the lens barrel 70 during assembly. As shown in FIG. 8, the at least one lens 80 is a first a lens 80'B and a second lens 80'A, wherein the first lens 80'B is a double concave lens, and the second lens 80'A is a convex-concave lens, and the at least one fixing ring 90' is a first a fixing ring 90'A and a second fixing ring 90'B, the front side edge of the double concave lens abuts against the abutting ring rib 71, and the first fixing ring 90'A is opposite to the inner circumferential surface of the lens barrel 70. The front side of the first fixing ring 90 ′A abuts against the rear rim of the biconcave lens, so that the biconcave lens is tilted with the lens barrel 70 as described above due to an error, and the front surface of the convex and concave lens The rim abuts against the rear side of the first fixing ring 90 ′A, and the second fixing ring 90 ′B and the lens barrel 70 The positioning ring groove 72 is screwed, and the second fixing ring 90'B abuts against the rear edge of the convex and concave lens and is in line contact, but the front edge of the convex and concave lens abuts against the first fixing ring On the rear side of the 90'A, the convex-concave lens will still be inclined with respect to the lens barrel 70 due to an error, so that the existing lens and lens barrel coupling structure is necessary for improvement.

In order to solve the existing lens and barrel combination structure, the main purpose of the present invention is to provide a lens and barrel combination structure, because the plane mirror and the concave lens cannot be automatically found to be missing. The novel uses the adjustment surface of the at least one lens to make the at least A lens is automatically centered during assembly so that the axis of the at least one lens can overlap the axis of the barrel.

The lens and barrel combination structure of the prior art solves the problem of the prior art, comprising: a lens barrel, the inner circumferential surface of the lens barrel has abutting ring rib at a front end thereof, and the lens barrel is placed on the abutting ring Forming a front opening at the rib, the inner circumferential surface of the lens barrel is recessed at the rear end thereof with at least one positioning ring groove, so that a rear opening is formed in the positioning ring groove of the lens barrel; at least one lens, the at least one lens card Provided in the inside of the lens barrel, the front edge of the lens is formed with a front adjustment surface, the front adjustment surface is an inclined annular surface, and the front adjustment surface abuts against the abutment ring rib of the lens barrel and is in a line Contacting; and at least one fixing ring, the at least one fixing ring being coupled to the positioning ring groove of the lens barrel.

The lens and barrel combination structure, wherein the lens and barrel combination structure comprises a lens and a fixing ring, the lens is a convex-concave lens, and a front ring circumference of the fixing ring abuts against a rear edge of the lens and First-line contact.

The lens and barrel combination structure, wherein the lens and barrel combination structure comprises a lens and a fixing ring, the lens is a double concave lens, the rear edge of the lens is provided with a rear adjustment surface, and the rear adjustment surface is a The annular surface is disposed obliquely, and the front ring circumference of the fixing ring abuts against the rear adjustment surface of the lens and is in line contact.

The lens and barrel combination structure, wherein the lens and barrel combination structure comprises two lenses and two fixing rings, the two lenses are a first lens and a second lens, and the first lens is a double concave lens, the first lens The second lens is a convex and concave lens, and the two fixing rings are a first fixing ring and a second fixing ring. The front edge of the first lens is formed with a front adjusting surface, and the front adjusting surface is an inclined torus. The front adjustment surface of the first lens abuts against the abutment ring rib of the lens barrel and is in line contact, the rear edge of the first lens is provided with a rear adjustment surface, and the rear adjustment surface is an inclined torus The outer circumferential surface of the first fixing ring abuts against the inner circumferential surface of the lens barrel, and the front ring circumference of the first fixing ring abuts against the rear adjustment surface of the first lens and is in line contact, and the line The front edge of the second lens is formed with a front adjustment surface, and the front adjustment surface of the second lens abuts against the rear edge of the first fixing ring and is in line contact, the front ring circumference of the second fixing ring and the first The rear rim of the two lenses abuts and is in line contact.

The utility model can obtain the improved efficiency: the novel adopts the design of each adjusting surface, so that the design of each adjusting surface abuts against the corresponding ring rib or the fixing ring and makes a line contact, so that each adjusting surface can Compared with the existing concave lens or the plane mirror, an error occurs due to the easy deformation of the contour and shape of the flat chamfer during the process, and the axis of the lens is locked during the screw locking process of the fixed ring relative to the lens barrel. The heart line will be inclined with respect to the axial line of the lens barrel. The novel adopts the design that each adjusting surface abuts against the corresponding ring rib or the fixing ring and is in line contact, so that each lens can automatically seek the heart. The effect of facilitation during the assembly process.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the novel content, the following further describes the preferred embodiment as shown in the following figure:

A first preferred embodiment of the lens and barrel combination structure of the present invention is shown in FIGS. 1 and 2, and the lens and barrel combination structure includes a lens barrel 10, at least one lens 20, and at least one fixing ring. 30, where:

The lens barrel 10 is a horizontally disposed cylinder. The inner circumferential surface of the lens barrel 10 has abutting ring rib 11 at its front end, so that the lens barrel 10 forms a front opening 101 at the abutting ring rib 11. The inner circumferential surface of the lens barrel 10 is provided with at least one positioning ring groove 12 at the rear end ring thereof, so that the lens barrel 10 forms a rear opening 102 at the at least one positioning ring groove 12, which is the first preferred embodiment of the present invention. The lens barrel 10 of the embodiment is provided with a positioning ring groove 12, and the inner circumferential surface of the positioning ring groove 12 is provided with a thread.

The at least one lens 20 is disposed inside the lens barrel 10. The front edge of the lens 20 is formed with a front adjustment surface 21, and the front adjustment surface 21 is an inclined annular surface. The front adjustment surface 21 and the mirror The abutting ring rib 11 of the barrel 10 abuts and is in line contact. The first preferred embodiment of the present invention includes a lens 20 which is a convex-concave lens.

The at least one fixing ring 30 is coupled to the positioning ring groove 12 of the lens barrel 20, and the at least one fixing ring 30 abuts against the at least one lens 20, and the at least one fixing ring 30 is an upright circular ring body. The first preferred embodiment of the present invention includes a fixing ring 30. The outer ring circumferential surface of the fixing ring 30 is provided with a thread coupled with the positioning ring groove 12, so that the fixing ring 30 and the lens barrel 10 are interlocked with each other. And the front ring circumference of the fixing ring 30 abuts against the rear rim of the lens 20 and is in line contact.

In the first preferred embodiment of the present invention, the front adjustment surface 21 of the at least one lens 20 abuts against the ring rib 11 of the lens barrel 10 and is in line contact, and the at least one lens 20 is a convex and concave The rear edge of the lens 20 has a circular arc surface, such that the peripheral edge of the front ring of the fixing ring 30 abuts against the rear edge of the lens 20 and is in line contact, so that the lens 20 can be automatically formed like a convex lens. The function of the heart, that is, the axis of the lens 20, can overlap the axis of the lens barrel 10 during assembly.

As shown in FIG. 3, the second embodiment of the present invention has substantially the same structural design as the first preferred embodiment. The difference between the embodiment is that the lens 20A is a double concave lens. The lens 20 is a convex-concave lens. The front edge of the lens 20A is provided with a front adjustment surface 21A. The rear edge of the lens 20A is provided with a rear adjustment surface 22A. The rear adjustment surface 22A is an inclined annular surface. The front ring circumference of the retaining ring 30 abuts against the rear adjustment surface 22A of the lens 20A and is in line contact.

As shown in the fourth preferred embodiment of the present invention, the structural design of the embodiment is substantially the same as that of the second preferred embodiment. The difference between the embodiment is that the at least one lens is a first lens. 20'A and a second lens 20'B, the first lens 20'A is a double concave lens, the second lens 20'B is a convex-concave lens, and the at least one fixing ring 30 is a first fixing ring 30 'A and a second fixing ring 30'B, the outer circumferential surface of the first lens 20'A abuts against the inner circumferential surface of the lens barrel 10, and the outer circumferential surface of the first fixing ring 30'A abuts The front peripheral edge of the first fixing ring 30'A abuts against the rear adjusting surface 22'A of the first lens 20'A and is in line contact with the second peripheral lens. The 20'B card is disposed on the inner circumferential surface of the lens barrel 10, and the front edge of the second lens 20'B is formed with a front adjustment surface 21'B, and the front adjustment surface 21'B of the second lens 20'B. Abutting against the rear rim of the first fixing ring 30'A and in a line contact, and the front edge of the second lens 20'B is a circular arc surface, so that the front side of the second fixing ring 30'B Ring circumference After the second lens 20'B abuts against the rim and the contact line shape.

In combination with the foregoing technical features, the present invention utilizes the design of each of the adjustment faces 21, 21A, 21'B, 22A, 22'A such that the design of each of the adjustment faces 21, 21A, 21'B, 22A, 22'A corresponds to The abutting ring rib 11 or the fixing ring 30, 30'A, 30'B abuts and is in line contact. Compared with the existing concave lens or the plane mirror, the contour or shape of the flat chamfers 81A, 81B is easily deformed due to the process. If an error occurs, the axis of the lens 80A, 80', 80'A, 80'B cannot be aligned with the fixing ring 90', 90'A, 90'B being screwed with the lens barrel 70. The axial line of the lens barrel 70 overlaps and is missing. The present invention utilizes the design of each adjustment surface 21, 21A, 21'B, 22A, 22'A and the corresponding abutment ring rib 11 or fixed ring 30, 30' A, 30'B phase abuts and is in line contact design, so that each lens 20, 20A, 20'A, 20'B can automatically find the heart during the assembly process, so that each lens 20, 20A, 20'A, 20 The axis line of 'B' overlaps with the axis line of the lens barrel 10, and the effect of facilitating in the assembly process is achieved.

10‧‧‧Mirror tube
101‧‧‧ front opening
102‧‧‧After opening
11‧‧‧Abutment ring
12‧‧‧ positioning ring groove
20, 20A‧‧‧ lenses
20'A‧‧‧ first lens
20'B‧‧‧second lens
21, 21A, 21'B‧‧‧ front adjustment surface
22A, 22'A‧‧‧ rear adjustment surface
30‧‧‧Fixed ring
30'A‧‧‧First fixed ring
30'B‧‧‧second fixed ring
70‧‧‧Mirror tube
701‧‧‧ front opening
702‧‧‧After opening
71‧‧‧Abut the ring rib
72‧‧‧ positioning ring groove
80, 80A‧‧ lens
80'B‧‧‧ first lens
80'A‧‧‧second lens
81A, 81B‧‧‧Chamfering
90, 90'‧‧‧ fixed ring
90'A‧‧‧First fixed ring
90'B‧‧‧second fixed ring

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial cross-sectional perspective view of a first preferred embodiment of the present invention. Figure 2 is a cross-sectional side view of the first preferred embodiment of the present invention. Figure 3 is a cross-sectional side view of a second preferred embodiment of the present invention. Figure 4 is a cross-sectional side view of a third preferred embodiment of the present invention. 5 to 8 are cross-sectional side views showing a structure in which a conventional lens and a lens barrel are combined.

10‧‧‧Mirror tube

101‧‧‧ front opening

102‧‧‧After opening

11‧‧‧Abutment ring

12‧‧‧ positioning ring groove

20‧‧‧ lenses

21‧‧‧Pre-adjustment

30‧‧‧Fixed ring

Claims (4)

A combination lens and lens barrel structure, comprising: a lens barrel, an inner peripheral surface of the lens barrel has abutting ring rib at a front end thereof, so that the lens barrel forms a front opening at the abutting ring rib, The inner circumferential surface of the lens barrel is recessed at the rear end thereof with at least one positioning ring groove, so that at least one positioning ring groove of the lens barrel forms a rear opening; at least one lens, the at least one lens is stuck on the lens barrel Internally, the front edge of the at least one lens is formed with a front adjustment surface, the front adjustment surface is an inclined annular surface, and the front adjustment surface abuts against the abutment ring rib of the lens barrel and is in line contact; and at least a fixing ring, the at least one fixing ring being coupled to the positioning ring groove of the lens barrel. The lens and barrel combination structure according to claim 1, wherein the lens and barrel coupling structure comprises a lens and a fixing ring, the lens is a convex-concave lens, a front ring circumference of the fixing ring and a rear ring of the lens The edge is abutting and in a line contact. The combination of the lens and the lens barrel according to claim 1, wherein the lens and the lens barrel coupling structure comprises a lens and a fixing ring, the lens is a double concave lens, and the rear edge of the lens is provided with a rear adjustment surface, The rear adjustment surface is an inclined annular surface, and the front ring circumference of the fixing ring abuts against the rear adjustment surface of the lens and is in line contact. The combination of the lens and the lens barrel according to claim 1, wherein the lens and the lens barrel combination structure comprises two lenses and two fixing rings, wherein the two lenses are a first lens and a second lens, and the first lens is a first lens a double concave lens, the second lens is a convex and concave lens, and the two fixing rings are a first fixing ring and a second fixing ring, and the front edge of the first lens is formed with a front adjusting surface, and the front adjusting surface is a An inclined surface of the first lens, the front adjustment surface of the first lens abuts against the abutment ring rib of the lens barrel and is in line contact, the rear edge of the first lens is provided with a rear adjustment surface, and the rear adjustment surface is a An annular surface of the first fixing ring abuts against an inner circumferential surface of the lens barrel, and a front ring circumference of the first fixing ring abuts against a rear adjustment surface of the first lens a line contact, and a front adjustment edge of the second lens is formed with a front adjustment surface, the front adjustment surface of the second lens abuts against the rear edge of the first fixing ring and is in line contact, the front of the second fixing ring The circumference of the ring abuts against the rear rim of the second lens and is connected in a line touch.