TWI540356B - Lens - Google Patents

Description

Lens

The invention relates to a lens, in particular to a lens for assembling a lens barrel and a rotating ring in a clamping manner.

The lens is the main component that is indispensable for cameras and projectors. In general, the lens can be divided into a telescopic lens (ie, a zoom lens) and a fixed focus lens. The biggest difference between the two is the focal length value. The focal length of the fixed-focus lens is a single value, and the focal length of the telescopic lens is a range. Compared with the fixed-focus lens, the telescopic lens has a rotating ring for adjusting the focus value. The user can turn the swivel to select the desired focal length value. At present, the swivel on the lens is directly locked to the lens barrel with screws. However, when the swivel is attached to the lens barrel with a screw, there is a possibility that the lens group in the lens barrel is deviated from the predetermined optical path because the force of the lock is too large, thereby affecting the imaging of the lens.

One of the objects of the present invention is to provide a lens for assembling a lens barrel and a swivel in a snapping manner to solve the above problems.

According to an embodiment, the lens of the present invention includes a lens barrel and a first rotating ring. The lens barrel has a first positioning portion, a first protruding portion and a second protruding portion, wherein the first protruding portion and the second protruding portion are located on two sides of the first positioning portion. The first rotating ring has a second positioning portion, a first retaining wall and a second retaining wall, wherein the first retaining wall and the second retaining wall are located on two sides of the second positioning portion. When the first rotating ring is disposed on the lens barrel, the first positioning portion and the second positioning portion are mutually locked, and the first blocking wall and the second blocking wall respectively stop the first protruding portion and the second protruding portion from being opposite to the first One of the positioning portions rotates in the axis.

In this embodiment, the lens may further include a second rotating ring, wherein the first rotating ring has two The first engaging portion has a second engaging portion. When the second rotating ring is disposed on the lens barrel, the two first engaging portions are respectively engaged with the second second engaging portions.

In summary, the present invention is to provide a first positioning portion, a first protruding portion and a second protruding portion on the lens barrel, and a corresponding second positioning portion, a first retaining wall and a second portion are disposed on the first rotating ring. Retaining wall. Therefore, the assembler can fix the first positioning portion and the second positioning portion to each other to set the first rotating ring on the lens barrel. After the first rotating ring is disposed on the lens barrel, the first retaining wall and the second retaining wall respectively stop the rotation of the first protruding portion and the second protruding portion relative to the axis of the first positioning portion, so that the first rotating ring Fixed to the lens barrel. In addition, the present invention provides two first engaging portions on the first rotating ring and corresponding two second engaging portions on the second rotating ring. Therefore, after the first rotating ring is disposed on the lens barrel, the assembler can fix the two first engaging portions and the second second engaging portions to each other, and the second rotating ring is disposed on the lens barrel. Since the present invention assembles the lens barrel and the swivel in a snap-fit manner, the influence of the prior art on the lens imaging by the screw lock can be avoided.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

1‧‧‧ lens

10‧‧‧Mirror tube

12, 12'‧‧‧ first rotating ring

14‧‧‧Second swivel

16‧‧‧ lens group

100‧‧‧First Positioning Department

102‧‧‧First protrusion

104‧‧‧Second protrusion

106‧‧‧ Third Positioning Department

120‧‧‧Second Positioning Department

122‧‧‧First retaining wall

124‧‧‧Second retaining wall

126‧‧ First First Joint Department

128‧‧‧ Third retaining wall

130‧‧‧fourth retaining wall

140‧‧‧Second Jointing Department

142‧‧‧Four Positioning Department

A‧‧‧ axis

D1‧‧‧ first direction

D2‧‧‧ second direction

X-X‧‧‧ hatching

Fig. 1 is a perspective view of a lens according to an embodiment of the present invention.

Figure 2 is an exploded view of the lens in Figure 1.

Figure 3 is an exploded view of the lens in Figure 1 from another perspective.

Fig. 4 is a cross-sectional view of the lens taken along line X-X in Fig. 1.

Fig. 5 is a perspective view of a first swivel according to another embodiment of the present invention.

Please refer to FIG. 1 to FIG. 4 , FIG. 1 is a perspective view of a lens 1 according to an embodiment of the present invention, FIG. 2 is an exploded view of the lens 1 in FIG. 1 , and FIG. 3 is an exploded view of the lens 1 in FIG. 1 . The exploded view of the lens 1 at another viewing angle, and Fig. 4 is a cross-sectional view of the lens 1 taken along line XX in Fig. 1.

As shown in FIGS. 1 to 4, the lens 1 includes a lens barrel 10 and a first rotating ring 12. And a second rotating ring 14. The lens 1 can be applied to a camera, a projector or other electronic device having an imaging function depending on the actual application. In a practical application, a lens group 16 for imaging is provided in the lens barrel 10. The lens barrel 10 has a first positioning portion 100 , a first protruding portion 102 , and a second protruding portion 104 . The first protruding portion 102 and the second protruding portion 104 are located on two sides of the first positioning portion 100 . The first rotating ring 12 has a second positioning portion 120 , a first retaining wall 122 , and a second retaining wall 124 . The first retaining wall 122 and the second retaining wall 124 are located on two sides of the second positioning portion 120 . In this embodiment, the position of the first positioning portion 100 corresponds to the position of the second positioning portion 120, the position of the first protruding portion 102 corresponds to the position of the first retaining wall 122, and the position of the second protruding portion 104 Corresponding to the position of the second retaining wall 124. In addition, the first rotating ring 12 can have two first engaging portions 126, and the second rotating ring 14 can have two second engaging portions 140, wherein the positions of the two first engaging portions 126 and the second second engaging portions The position of 140 corresponds. Furthermore, the lens barrel 10 can have a third positioning portion 106, and the second rotating ring 14 can have a fourth positioning portion 142, wherein the position of the third positioning portion 106 corresponds to the position of the fourth positioning portion 142.

When the lens 1 is assembled, the assembler can first align the second positioning portion 120 of the first rotating ring 12 with the first positioning portion 100 of the lens barrel 10 to fix the first positioning portion 100 and the second positioning portion 120 to each other. The first rotating ring 12 is disposed on the lens barrel 10. In this embodiment, the first positioning portion 100 is a positioning post, and the second positioning portion 120 is a positioning hole, so the assembler can insert the first positioning portion 100 into the second positioning portion 120, so that the first positioning portion 100 A positioning portion 100 and the second positioning portion 120 are mutually locked. Preferably, the first positioning portion 100 and the second positioning portion 120 can be mutually loosely engaged to avoid unnecessary stress during assembly and affect the imaging of the lens 1. However, the first positioning portion 100 and the second positioning portion 120 can be fastened to each other in a tightly fitting manner, without being loosely fitted. It should be noted that the first positioning portion 100 can be designed as a positioning hole, and the second positioning portion 120 can be designed as a positioning post to achieve the above-mentioned fastening effect.

As shown in FIG. 4 , when the first rotating ring 12 is disposed on the lens barrel 10 , the first positioning portion 100 and the second positioning portion 120 are mutually locked, and the first retaining wall 122 and the second retaining wall 124 . That is, the first protruding portion 102 and the second protruding portion 104 are respectively stopped from the axis A of the first positioning portion 100. Turn. In this embodiment, the first retaining wall 122 restricts the rotation of the first protrusion 102 relative to the axis A of the first positioning portion 100 toward the first direction D1 shown in FIG. 1 , and the second retaining wall 124 limits the second The protruding portion 104 is rotated relative to the axis A of the first positioning portion 100 in the second direction D2 shown in FIG. 1 , wherein the first direction D1 is opposite to the second direction D2. Thereby, the first swivel 12 can be fixed to the lens barrel 10 in a locking manner, and the first swivel 12 is prevented from rotating relative to the lens barrel 10.

After the first rotating ring 12 is disposed on the lens barrel 10, the assembler can align the fourth positioning portion 142 of the second rotating ring 14 with the third positioning portion 106 of the lens barrel 10 to make the third positioning portion 106. The second positioning portion 142 is locked with the fourth positioning portion 142 , and the second engaging portion 140 of the second rotating ring 14 is aligned with the first engaging portion 126 of the first rotating ring 12 , so that the two first engaging portions 126 . The two second engaging portions 140 are respectively engaged with each other, and the second rotating ring 14 is disposed on the lens barrel 10. In this embodiment, the third positioning portion 106 is a positioning post, and the fourth positioning portion 142 is a positioning hole, so the assembler can insert the third positioning portion 106 into the fourth positioning portion 142, so that the first positioning portion The three positioning portions 106 and the fourth positioning portion 142 are mutually locked. Preferably, the third positioning portion 106 and the fourth positioning portion 142 can be mutually loosely engaged to avoid unnecessary stress during assembly and affect the imaging of the lens 1. However, the third positioning portion 106 and the fourth positioning portion 142 can be fastened to each other in a tightly fitting manner, without being loosely fitted. It should be noted that the third positioning portion 106 can also be designed as a positioning hole, and the fourth positioning portion 142 can be designed as a positioning post to achieve the above-mentioned clamping effect. In addition, the first engaging portion 126 and the second engaging portion 140 may be interlocking hooks, but not limited thereto.

As shown in FIG. 4, when the second rotating ring 14 is disposed on the lens barrel 10, the third positioning portion 106 is locked with the fourth positioning portion 142, and the two first engaging portions 126 are respectively associated with The second engaging portions 140 are mutually locked. Thereby, the second swivel 14 can be fixed to the lens barrel 10 in a locking manner. Since the second rotating ring 14 and the first rotating ring 12 are mutually locked, and the first rotating ring 12 cannot rotate relative to the lens barrel 10, the second rotating ring 14 cannot rotate relative to the lens barrel 10.

When the lens barrel 10 is a telescopic lens barrel capable of adjusting the focal length value, the user can rotate the first rotating ring 12 and the second rotating ring 14 to drive the lens barrel 10 to extend or shorten, thereby adjusting the focal length value of the lens 1.

Please refer to FIG. 5. FIG. 5 is a perspective view of the first swivel 12' according to another embodiment of the present invention. The first rotating ring 12 ′ is different from the first rotating ring 12 described above in that the first rotating ring 12 ′ further has a third retaining wall 128 and a fourth retaining wall 130 , wherein the third retaining wall 128 and The first retaining wall 122 is opposite, and the fourth retaining wall 130 is opposite to the second retaining wall 124. When the first rotating ring 12' is disposed on the lens barrel 10 in FIG. 2, the first protruding portion 102 is located between the first retaining wall 122 and the third retaining wall 128, and the second protruding portion 104 is Located between the second retaining wall 124 and the fourth retaining wall 130. Thereby, the first retaining wall 122 and the third retaining wall 128 can be used to cooperate with each other, and the second retaining wall 124 and the fourth retaining wall 130 are utilized to prevent the first rotating ring 12' from rotating relative to the lens barrel 10. It should be noted that the components of the same reference numerals as those shown in the first to fourth figures in FIG. 5 have substantially the same operation principle and will not be described again.

In summary, the present invention is to provide a first positioning portion, a first protruding portion and a second protruding portion on the lens barrel, and a corresponding second positioning portion, a first retaining wall and a second portion are disposed on the first rotating ring. Retaining wall. Therefore, the assembler can fix the first positioning portion and the second positioning portion to each other to set the first rotating ring on the lens barrel. After the first rotating ring is disposed on the lens barrel, the first retaining wall and the second retaining wall respectively stop the rotation of the first protruding portion and the second protruding portion relative to the axis of the first positioning portion, so that the first rotating ring Fixed to the lens barrel. In addition, the present invention provides two first engaging portions on the first rotating ring and corresponding two second engaging portions on the second rotating ring. Therefore, after the first rotating ring is disposed on the lens barrel, the assembler can fix the two first engaging portions and the second second engaging portions to each other, and the second rotating ring is disposed on the lens barrel. Since the present invention assembles the lens barrel and the swivel in a snap-fit manner, the influence of the prior art on the lens imaging by the screw lock can be avoided.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧ lens

10‧‧‧Mirror tube

12‧‧‧First Swing

14‧‧‧Second swivel

100‧‧‧First Positioning Department

102‧‧‧First protrusion

104‧‧‧Second protrusion

106‧‧‧ Third Positioning Department

120‧‧‧Second Positioning Department

122‧‧‧First retaining wall

124‧‧‧Second retaining wall

126‧‧ First First Joint Department

140‧‧‧Second Jointing Department

142‧‧‧Four Positioning Department

A‧‧‧ axis

Claims (5)

A lens comprising: a lens barrel having a first positioning portion, a first protruding portion and a second protruding portion, wherein the first protruding portion and the second protruding portion are located on two sides of the first positioning portion, The first positioning portion is one of a positioning post and a positioning hole; and a first rotating ring has a second positioning portion, a first retaining wall and a second retaining wall, the first retaining wall and the first retaining wall The second retaining wall is located on the two sides of the second positioning portion, and the second positioning portion is the other one of the positioning post and the positioning hole; wherein, when the first rotating ring is disposed on the lens barrel, the first A positioning portion and the second positioning portion are mutually locked, and the first retaining wall and the second retaining wall respectively stop the first protruding portion and the second protruding portion from rotating relative to an axis of the first positioning portion. The lens of claim 1, wherein the first retaining wall restricts rotation of the first protrusion relative to the axis of the first positioning portion in a first direction, the second retaining wall restricting the second protruding portion from the first The axis of a positioning portion rotates in a second direction, and the first direction is opposite to the second direction. The lens of claim 1, wherein the first rotating ring further has a third retaining wall and a fourth retaining wall, the third retaining wall is opposite to the first retaining wall, the fourth retaining wall and the first retaining wall The second retaining wall is opposite to each other. When the first rotating ring is disposed on the lens barrel, the first protruding portion is located between the first retaining wall and the third retaining wall, and the second protruding portion is located in the second blocking Between the wall and the fourth retaining wall. The lens of claim 1, further comprising a second rotating ring, wherein the first rotating ring has two first engaging portions, and the second rotating ring has two second engaging portions, when the second rotating ring The two first engaging portions are respectively engaged with the two second engaging portions when being disposed on the lens barrel. The lens of claim 4, wherein the lens barrel further has a third positioning portion, the second rotating ring further has a fourth positioning portion, when the second rotating ring is disposed on the lens barrel, the first The three positioning portions and the fourth positioning portion are mutually locked.