TWI554820B - Lens mechanism, lens cover and lens assembly using the same - Google Patents

Description

Lens mechanism, lens cover and lens group applying the same

The present invention relates to a lens mechanism, a lens cover, and a lens group including the lens mechanism and the lens cover, and particularly relates to a lens mechanism, a lens cover, and a lens group including the lens mechanism and the lens cover, which can be labor-saving to remove the lens cover .

The lens cover of the conventional lens mechanism can cover the lens of the lens mechanism to protect the lens from external impurities. In general, when the lens cover covers the lens mechanism, it is necessary to manually remove the lens cover directly. This action takes some time, which may result in the inability to turn on the camera or press the shutter, or because the user forgot to remove the lens cover. And miss the opportunity to capture the beauty.

The present invention relates to a lens mechanism, a lens cover, and a lens assembly using the same. In an embodiment, the lens cover can be labor-savingly separated from the lens mechanism to quickly capture images.

According to an embodiment of the invention, a lens mechanism is proposed. A lens cover is selectively sleeved to the lens mechanism. The lens cover includes a base and a movable member. The movable member is movably disposed on the base relative to the base and has a second guide surface. The extended surface of the second guide surface intersects an optical axis. The lens mechanism includes a housing and a sleeve. The housing has a first angled surface, and the extended surface of the first angled surface intersects the optical axis. The sleeve is disposed in the housing. Among them, when the mirror When the head cover covers the lens mechanism, the second guiding surface abuts against the first guiding surface; during the pushing of the base along the optical axis, the second guiding surface is separated from the geometrical contour of the second guiding surface The first guide surface.

According to another embodiment of the present invention, a lens set is proposed. The lens group includes a lens mechanism and a lens cover. The lens mechanism includes a housing and a sleeve. The housing has a first angled surface, and the sleeve is disposed within the housing. The lens cover includes a base and a movable member. The movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface. The lens mechanism and the lens cover are engaged with each other by the first guide surface and the second guide surface, and the base is pushed by the sleeve to disengage the second guide surface from the first guide surface.

According to another embodiment of the present invention, a lens set is proposed. The lens group includes a lens mechanism and a lens cover. The lens mechanism comprises a casing and a sleeve, the casing has a first guiding surface, and the sleeve is disposed in the casing. The lens cover includes a base and a movable member. The movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface. Wherein, the lens cover pushes the base by the sleeve, so that the second guiding surface is separated from the first guiding surface by abutting the first guiding surface.

According to another embodiment of the present invention, a lens set is proposed. The lens group includes a lens mechanism and a lens cover. The lens mechanism includes a housing having a first angled surface, the extended surface of the first angled surface intersecting the optical axis. The lens cover includes a base and a movable member. The movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface, and the extended surface of the second guide surface intersects an optical axis.

According to another embodiment of the present invention, a lens cover is proposed. The lens cover includes a base and a movable member. The movable member is movable relative to the base along a radial direction The base member is disposed on the base, and the movable member has a second guide surface, and the extended surface of the second guide surface intersects an optical axis of a lens mechanism.

In order to provide a better understanding of the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings

Please refer to FIG. 1 , which illustrates an external view of an image capturing device according to an embodiment of the invention. The image capturing device 100 is, for example, a camera, a camera or other device having an image capturing function, and includes at least a lens group 10 having an optical axis and including a lens cover 110 and a lens mechanism 120, wherein the lens cover 110 can be covered The lens mechanism 120 is housed to protect optical elements (not shown), such as lenses, in the lens mechanism 120 from accidents such as dust, scratches or liquid splashes.

Please refer to FIG. 2, which is an exploded view of the lens cover of FIG. 1. The lens cover 110 has a central shaft (not shown) and includes a base 111, two movable members 112, two elastic members 113, two flexible members 114, and a carrier 115. In an embodiment, the central axis may coincide with the optical axis.

The two movable members 112 are movably disposed on the base 111 with respect to the base 111, and the two movable members 112 are oppositely disposed, that is, the two movable members 112 are arranged in a straight line or sandwiched by a substantially central angle of 180 degrees. In another example, only one movable member 112 or at least two movable members 112 may be used.

The elastic member 113 is disposed between the carrier 115 and the corresponding movable member 112 to move the movable member 112 relative to the carrier 115 and provide an elastic restoring force of the movable member 112. In this example, the two ends of the elastic member 113 are respectively connected to the carrier 115 and the movable member 112; in another example, the elastic member 113 Only one end is connected to one of the carrier 115 and the movable member 112, and the other end thereof can be suspended (ie, not connected to the carrier 115 and the movable member 112). Further, the elastic member 113 is, for example, a spring. Although the elastic member 113 of the present example is exemplified by a plurality of members, in another example, the number of the elastic members 113 may be single, and the two movable members 112 are directly connected. In this design, the carrier 115 may be selectively omitted. Or a uniform hole is formed in the carrier 115, and the elastic member 113 is disposed between the two movable members 112 through the through hole, and the two ends are respectively connected to the two movable members 112. When the lens cover 110 covers the lens mechanism 120, the elastic member 113 is in a free length state. In this state, when the movable member 112 is to perform the radial S2 movement, it must overcome the elastic force of the elastic member 113 to perform the radial direction. motion.

The flexible member 114 connects the carrier 115 and the corresponding movable member 112. The flexible member 114 has a curved structure that achieves flexibility. Due to the flexibility of the flexible member 114, the movable member 112 is movable relative to the flexible member 114. In addition, the movable member 112, the elastic member 113 and the flexible member 114 can be mounted together on the base 111 after assembly. After assembly, the movable member 112 is movable relative to the base 111 in the radial direction S2.

Please refer to Fig. 3, which is a cross-sectional view taken along line 3-3' in Fig. 1. Each of the movable members 112 has a second guide surface 112s, and the extended surface of the second guide surface 112s intersects with the optical axis S1 of the lens group 10, for example, an oblique angle of 10 to 80 degrees with the optical axis S1. This range of angles is not intended to limit embodiments of the invention. The second guide surface 112s faces the outside of the lens mechanism 120. Further, the second guide surface 112s faces in a direction away from the optical axis S1. When the lens cover 110 covers the lens mechanism 120, the second guide surface 112s of the movable member 112 abuts against the first guide surface 121s of the lens mechanism 120, so that the lens The cover 110 is not easily detached from the lens mechanism 120.

The lens mechanism 120 has a central axis (not shown) including a housing 121 and a sleeve 122. The housing 121 has a first guiding surface 121s, an extending surface of the first guiding surface 121s and an optical axis S1 of the lens assembly 10 and The central axes intersect, for example, obliquely at an angle of 10 to 80 degrees from the optical axis S1 and the central axis, respectively, although this angular range is not intended to limit embodiments of the present invention. The first guide surface 121s faces the inside of the lens mechanism 120. Further, the first guide surface 121s faces in a direction approaching the optical axis S1. The first guiding surface 121s and the second guiding surface 112s can respectively intersect with the optical axis S1 at 45 degrees, and the geometrical contours of the first guiding surface 121s and the second guiding surface 112s can cooperate with each other, and the lens mechanism and the lens mechanism The lens cover can be engaged with the second guide surface 112s by the first guide surface 121s, and the base 111 is pushed by the sleeve 122 to disengage the second guide surface 112s from the first guide surface 121s. In one embodiment, the lens cover 110 pushes the base 111 by the sleeve 122 such that the second guide surface 112s is switched from the state of abutting the first guide surface 121s to the state of being separated from the first guide surface 121s. Further, the central axis may coincide with the optical axis S1 or be offset from each other by a predetermined distance or may be offset from the optical axis S1.

The angle between the first guiding surface 121s and the optical axis S1 is substantially equal to the angle between the second guiding surface 112s and the optical axis S1, so that the contact area between the first guiding surface 121s and the second guiding surface 112s is increased, so that The stress and the amount of wear of the first guide surface 121s and the second guide surface 112s are reduced. The first guide surface 121s is composed, for example, of a plane, a curved surface, or a combination thereof, wherein the curved surface is, for example, a cylindrical surface, an elliptical cylinder surface, a spherical surface, or other suitable curved surface. The first guide surface 121s may be a smooth surface or a rough surface, and the actual roughness may be determined according to the required thrust, which is not limited in this embodiment. The geometrical contour of the second guide surface 112s and The roughness may be similar to the first guide surface 121s.

Due to the design of the first guide surface 121s and the second guide surface 112s, when the sleeve 122 is advanced in the direction of the optical axis S1, the lens cover 110 can be pushed away effortlessly. In detail, when the photographer finds the scenery, without manually removing the lens cover 110, the shutter 122 can be directly turned on or pressed, and the sleeve 122 can be automatically pushed open by the lens cover 110, so as to avoid missing the scene to be photographed.

The sleeve 122 is movably disposed in the housing 121 in the direction of the optical axis S1. The lens mechanism 120 further includes an optical system (not shown) disposed in the sleeve 122 and composed of at least one focusing mirror group for adjusting the imaging focal length during focusing.

Please refer to Fig. 4, which is a cross-sectional view taken along line 4-4' in Fig. 1. The base 111 has ribs 1111. The ribs 1111 are closer to the sleeve 122 of the lens mechanism 120 than the second guide surface 112s (Fig. 3), that is, the end faces of the ribs 1111 are located on the second guide surface 112s and the lens mechanism 120. Between the sleeves 122. In detail, the distance of the end surface of the rib 1111 from the sleeve 122 is smaller than the distance of the second guide surface 112s from the sleeve 122, so that when the sleeve 122 travels in the direction of the optical axis S1, the rib 1111 of the base 111 is first contacted. Further, the movable member 112 is driven away from the lens mechanism 120 in the radial direction S2 and the optical axis S1 direction.

Please refer to FIG. 5, which is a cross-sectional view showing the process of the lens cover of FIG. 1 being separated from the lens mechanism. During the process of pushing the sleeve 122 substantially in the direction of the optical axis S1, the second guide surface 112s of the movable member 112 exerts a force on the first guide surface 121s of the housing 121, the first of FIG. The component force F1 and the second component force F2 are reaction forces acting on the first guide surface 121s, wherein the first component force F1 is a component force along the optical axis S1, and the second component force F2 is radial. The component of S2. As long as the second component force F2 is greater than the above elasticity The elastic force R of the element 113, the second guide surface 112s of the movable member 112 can be separated from the first guide surface 121s along the second guide surface 112s, for example, the first guide along the geometrical contour of the first guide surface 112s Corner 121s. In a process in which the second guide surface 112s is separated from the first guide surface 121s, the second guide surface 112s is in full or partial contact with the first guide surface 121s. In one embodiment, the second guide surface 112s of the movable member 112 is separated from the first guide surface 121s in the radial direction S2 and the optical axis S1. In one embodiment, when the extending faces of the first guiding surface 121s and the second guiding surface 112s are obliquely intersected with the optical axis S1 of the lens assembly 10 by about 45 degrees, the axial thrust of the sleeve 122 only needs about 350-450 grams. The lens cover 110 can be pushed out to separate the lens cover 110 from the lens mechanism 120. The extending surface of the first guide surface 121s and the second guide surface 112s intersects the optical axis S1 of the lens group 10 by 90 degrees (that is, the first guide surface 121s and the second guide surface 112s are not provided) The user needs at least an axial force greater than 1700 grams to separate the lens cover 110 from the lens mechanism 120; even, it is conventionally known that the lens cover is firmly mounted on the lens mechanism, and thus a hook structure is often provided. The user cannot separate the lens cover from the lens mechanism by the pulling force/thrust force applied to the optical axis S1 in parallel. The sleeve 122 of the embodiment pushes the base 111 to reduce the axial thrust (saving effort) by at least about 40%, but this It is not intended to limit the invention.

Please refer to FIG. 6 , which is a cross-sectional view showing the lens cover of FIG. 1 removed from the lens mechanism. When the sleeve 122 of FIG. 5 continues to push the base 111 until the second guide surface 112s of the lens cover 110 is completely separated from the first guide surface 121s, the lens cover 110 is disengaged from the lens mechanism 120. In addition, the image capturing device 100 further includes a set of ropes (not shown) that connect the lens mechanism 120 and the lens cover 110 to prevent the lens cover 110 from falling off the ground and losing or contaminating the dust. It is not intended to limit the embodiments of the present invention.

Please refer to FIG. 7, which is a cross-sectional view of an image capturing device according to another embodiment of the present invention. The image capturing device 100 includes a lens cover 110 and a lens mechanism 120 , wherein the lens cover 110 is pivotally connected to the housing 121 of the lens mechanism 120 . When the lens cover 110 is disengaged from the lens mechanism 120, the lens cover 110 is rotated relative to the pivotal position to expose the sleeve 122. The image capturing device 100 further includes a pivoting portion 130 that connects the lens cover 110 and the housing 121. When the lens cover 110 covers the lens mechanism 120, the elastic member 113 deforms to store the elastic potential energy; when the lens cover 110 is separated from the housing 121 Thereafter, the elastic member 113 releases the elastic potential energy to drive the lens cover 110 to rotate in the vertical orientation relative to the pivoting portion 130, but may also be in any orientation between the horizontal and vertical orientations. In this example, the lens cover 110 is pivotally connected to the lower edge of the housing 121. Therefore, the lens cover 110 does not block the flash 140 of the image capturing device 100 when the lens cover 110 is rotated relative to the pivoting portion 130 to affect the operation of the flash 140. However, as long as the lens cover 110 does not affect the flashing power of the flash 140 of the image capturing device 100, and does not affect the incident light beam incident on the optical system, the lens cover 110 can be pivotally connected to the periphery of the housing 121 without This is limited.

In conclusion, the present invention has been disclosed in the above embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ lens group

100‧‧‧Image capture device

110‧‧‧Lens cover

111‧‧‧Base

1111‧‧‧ Ribs

112‧‧‧ movable parts

112s‧‧‧Second guide surface

113‧‧‧Flexible components

114‧‧‧Flexible parts

115‧‧‧ bearing seat

120‧‧‧Lens mechanism

121‧‧‧Shell

122‧‧‧ sleeve

121s‧‧‧first guide angle

130‧‧‧ pivotal

140‧‧‧flash

R‧‧‧Flexibility

S1‧‧‧ optical axis

S2‧‧‧ radial

FIG. 1 is a perspective view of an image capturing device according to an embodiment of the invention.

Fig. 2 is an exploded view of the lens cover of Fig. 1.

Fig. 3 is a cross-sectional view taken along line 3-3' in Fig. 1.

Fig. 4 is a cross-sectional view taken along line 4-4' in Fig. 1.

Fig. 5 is a cross-sectional view showing the process of the lens cover of Fig. 1 being separated from the lens mechanism.

Fig. 6 is a cross-sectional view showing the lens cover of Fig. 1 removed from the lens mechanism.

FIG. 7 is a cross-sectional view of an image capturing device according to another embodiment of the present invention.

100‧‧‧Image capture device

110‧‧‧Lens cover

111‧‧‧Base

112‧‧‧ movable parts

112s‧‧‧Second guide surface

113‧‧‧Flexible components

120‧‧‧Lens mechanism

121‧‧‧Shell

122‧‧‧ sleeve

121s‧‧‧first guide angle

S1‧‧‧ optical axis

S2‧‧‧ radial

Claims (12)

A lens mechanism, a lens cover is selectively sleeved on the lens mechanism, the lens cover includes a base and a movable member, and the movable member is movably disposed on the base relative to the base and has a radial a second guiding surface, the extending surface of the second guiding surface intersecting an optical axis, the lens mechanism comprising: a housing having a first guiding surface, the extending surface of the first guiding surface and the The optical axis intersects; and a sleeve is disposed in the housing; wherein, when the lens cover covers the lens mechanism, the second guide surface abuts the first guide surface; During the axial direction pushing of the base, the second guiding surface is separated from the first guiding surface along the geometric contour of the first guiding surface. A lens assembly includes: a lens mechanism including a housing and a sleeve, the housing having a first angled surface, the sleeve being disposed in the housing; and a lens cover including a base and a a movable member, the movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface; wherein the lens mechanism and the lens cover are provided by the first guide surface and the lens cover The second guide faces are engaged with each other, and the base is pushed by the sleeve to disengage the second guide face from the first guide face. A lens assembly includes: a lens mechanism including a housing and a sleeve, the housing having a first angled surface, the sleeve being disposed in the housing; a lens cover includes a base and a movable member, the movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface; wherein the lens cover is provided by the cover The cylinder pushes the base such that the second guide surface abuts the first guide surface to disengage the first guide surface. A lens assembly having an optical axis, the lens assembly comprising: a lens mechanism including a housing having a first guide surface, the extended surface of the first guide surface intersecting the optical axis; A lens cover includes a base and a movable member. The movable member is movably disposed on the base relative to the base, and the movable member has a second guide surface, and the extended surface of the second guide surface Intersecting with the optical axis. The lens assembly of claim 4, wherein the extending surface of the first guiding surface and the extending surface of the second guiding surface each intersect at 45 degrees with the optical axis. A lens cover includes: a base; and at least one movable member movably disposed on the base relative to the base, the movable member having a second guide surface, the second guide surface The extended face intersects a central axis. The lens cover of claim 6, wherein the lens cover is applied to a lens mechanism, the lens mechanism includes a sleeve and has a first guide surface, wherein the lens cover is sleeved on the lens mechanism On the time, the first The two guiding surfaces abut the first guiding surface; when the sleeve moves along the central axis relative to the lens mechanism, the sleeve pushes the second guiding surface away from the first guiding surface. The lens cover of claim 6, wherein the lens cover is applied to a lens mechanism, the lens mechanism includes a sleeve, the base has a rib, and the end surface of the rib is located on the second guide surface The lens mechanism is between the sleeves. The lens cover of claim 6, further comprising a flexible member connected to the movable member. The lens cover of claim 9, further comprising an elastic member disposed between the movable member and the flexible member. The lens cover of claim 7, wherein the second guide surface is composed of a plane, a curved surface or a combination thereof, and the geometric contour of the first guide surface and the geometric contour of the second guide surface Matching. The lens cap of claim 7, wherein the second guide face faces the lens mechanism, and the first guide face faces the lens mechanism.