TW201428404A - Lens hood mechanism and image pickup device using the same - Google Patents

Abstract

This invention discloses a lens hood mechanism and image pickup device using the same. The lens-hood mechanism comprises a lens-hood, a first lens-barrel and a second lens-barrel. The lens-hood has at least three direction convex dots on one end of exterior. The first lens-barrel outside the lens-hood has at least three barrel grooves corresponding to the direction convex dots in one end of interior. The direction convex dots are inserted into the barrel grooves respectively. The first lens-barrel has at least three direction convex bumps on one end of exterior. The second lens-barrel outside the first lens-barrel has at least three ribs corresponding to the direction convex bumps on one end of interior. The rotation of the second lens-barrel drives the rotation of the first lens-barrel so that the lens hood moves in the axial direction. Herewith the effect of the lens hood being automatically retrieved is achieved.

Description

Hood mechanism and camera device thereof

The present invention relates to a hood mechanism and an image pickup apparatus thereof, and more particularly to a hood mechanism capable of automatically accommodating a hood and an image pickup apparatus therefor.

With the evolution of the times, people have become accustomed to taking pictures and recording life. In order to make the photos more realistic or more beautiful, many people will install a hood in front of the camera lens to reduce the light diffraction when taking pictures, thereby improving the image quality.

However, in order to avoid the phenomenon of glare when photographing, the hood is usually placed on the camera lens in an extra installation manner, and in the process of installing the hood, the most worthwhile moment has been missed, and the hood is installed. The process also caused inconvenience to the photographer. Moreover, since the hood is an unnecessary component when photographing, it is easy for people to forget to carry the hood at the same time when taking the camera out. In addition, how to store the hood is also troublesome when not taking pictures. Therefore, the application of the hood on the camera device is greatly limited, which is one of the major problems that need to be overcome.

As described above, the inventors of the present invention have conceived and designed a hood mechanism and an image pickup apparatus thereof to improve the lack of the prior art, thereby enhancing the industrial use and utilization.

In view of the above-mentioned problems of the prior art, the object of the present invention is to provide a hood mechanism and an image pickup device thereof, so as to solve the problem that the hood of the prior art needs to be additionally installed on the image pickup device, which makes the photographing inconvenient and the hood It requires extra space to accommodate it, making it difficult to store.

In accordance with the purpose of the present invention, a hood mechanism is provided that includes a hood, a first barrel, and a second barrel. The hood is a hollow cylindrical structure, and at least one guiding protrusion is protruded from one end of the outer edge of the peripheral wall. The first lens barrel is a hollow cylindrical structure, and is sleeved outside the hood. The inner edge of the peripheral wall of the first lens barrel has at least three grooves corresponding to at least three guiding protrusions, and at least three guiding protrusions are respectively embedded in at least three guiding points. The three barrels are provided with at least three guiding protrusions protruding from one end of the outer periphery of the peripheral wall of the first barrel. The second lens barrel is a hollow cylindrical structure, and is sleeved outside the first lens barrel. The inner wall of the peripheral wall of the second lens barrel is provided with at least three ribs corresponding to at least three guiding protrusions.

Preferably, when the first lens barrel rotates in the first rotation direction or the second rotation direction, at least three guiding protrusions of the hood are respectively pulled by the at least three grooves, so that the hood is in the first lens barrel. Displacement in the first axial direction or the second axial direction.

Preferably, when the second lens barrel rotates in the second rotation direction, at least three guiding protrusions of the first lens barrel are respectively pushed by the at least three ribs, and the first lens barrel is rotated in the second rotation direction. Further, the hood is displaced in the second axial direction.

Preferably, at least three ribs are oblique ribs, at least three guiding protrusions respectively have inclined faces corresponding to the oblique ribs, and at least three ribs respectively push against the inclined faces of the at least three guiding protrusions to make the first lens barrel Rotate stably in the second direction of rotation.

Preferably, at least three guiding bumps are respectively connected to the center of the hood to form an imaginary straight line, and the angles between the imaginary straight lines are equal, and at least three guiding protrusions are respectively connected with the center of the first lens barrel into an imaginary straight line. The angle between each imaginary line is equal.

In addition, in accordance with the purpose of the present invention, an image pickup apparatus comprising: an image sensing element and a hood mechanism is further provided. The image sensing component is disposed inside the imaging device. The hood mechanism comprises: a hood, a first barrel and a second barrel. The hood is a hollow cylindrical structure, and at least one guiding protrusion is protruded from one end of the outer edge of the peripheral wall. The first lens barrel is a hollow cylindrical structure, and is sleeved outside the hood. The inner edge of the peripheral wall of the first lens barrel has at least three grooves corresponding to at least three guiding protrusions, and at least three guiding protrusions are respectively embedded in at least three guiding points. The three barrels are provided with at least three guiding protrusions protruding from one end of the outer periphery of the peripheral wall of the first barrel. The second lens barrel is a hollow cylindrical structure, and is sleeved outside the first lens barrel. The inner wall of the peripheral wall of the second lens barrel is provided with at least three ribs corresponding to at least three guiding protrusions.

As described above, the hood mechanism and the image pickup apparatus thereof according to the present invention may have one or more of the following advantages:
(1) The hood mechanism and the image pickup device thereof can rotate the first lens barrel in the first rotation direction or the second rotation direction to make the hood in the first lens barrel to the first axial direction or the second axis The direction is shifted, whereby the position of the hood can be easily adjusted.
(2) the hood mechanism and the imaging device thereof can rotate the second lens barrel in the second rotation direction by rotating the second lens barrel in the second rotation direction, thereby displacing the hood in the second axial direction. Thereby, the effect of automatic hood storage can be achieved.

1. . . Hood mechanism

11. . . Hood

111. . . The outer edge of the peripheral wall of the hood

112. . . Guide bump

113, 125. . . Imaginary line

114. . . Hood opening

12. . . First barrel

121. . . Inner wall of the first lens barrel

122. . . Trench

123. . . The outer edge of the peripheral wall of the first barrel

124. . . Guide bump

126. . . Opening of the first barrel

13. . . Second barrel

131. . . Inner wall of the second lens barrel

132. . . rib

2. . . Camera

twenty one. . . Image sensing component

twenty two. . . Control module

twenty three. . . Drive module

twenty four. . . Control button

α, β. . . Angle

d, t. . . distance

Figure 1 is a first schematic view of an embodiment of the hood mechanism of the present invention.
Figure 2 is a second schematic view of an embodiment of the hood mechanism of the present invention.
Figure 3 is a third schematic view of an embodiment of the hood mechanism of the present invention.
Figure 4 is a fourth schematic view of an embodiment of the hood mechanism of the present invention.
Fig. 5 is a schematic view showing an embodiment of an image pickup apparatus of the hood mechanism of the present invention.

The hood mechanism of the present invention can be applied to an image pickup device such as an image pickup lens, a digital camera, a monocular camera, or a digital video camera, but the scope of practical use is not limited thereto.

Please refer to FIG. 1 and FIG. 2 together; FIG. 1 is a first schematic view of an embodiment of the hood mechanism of the present invention; and FIG. 2 is a second schematic view of an embodiment of the hood mechanism of the present invention. As shown in the figure, the hood mechanism 1 includes a hood 11, a first barrel 12, and a second barrel 13. The hood 11 has a hollow cylindrical structure, and at least one guiding bump 112 is protruded from one end of the peripheral edge 111 of the peripheral wall of the hood 11 . The first lens barrel 12 is a hollow cylindrical structure, and is sleeved outside the hood 11; the peripheral wall inner edge 121 of the first lens barrel 12 has at least three cylindrical grooves 122 corresponding to at least three guiding protrusions 112, and at least three The guiding protrusions 112 are respectively embedded in the at least three barrels 122; at least one of the guiding protrusions 124 is protruded from one end of the peripheral wall outer edge 123 of the first barrel 12. The second lens barrel 13 has a hollow cylindrical structure and is sleeved outside the first lens barrel 12 . The peripheral wall inner edge 131 of the second lens barrel 13 is provided with at least three ribs 132 corresponding to at least three guiding protrusions 124 .

When the first barrel 12 rotates in the first rotation direction or the second rotation direction, at least three guiding protrusions 112 of the hood 11 are respectively embedded in the at least three barrels 122 of the first barrel 12, so that the hood is caused At least three guiding bumps 112 of the 11 are respectively pulled by the outer shape of the at least three grooves 122, so that the hood 11 is displaced in the first axial direction or the second axial direction in the first lens barrel 12. Incidentally, the outer shape of the tubular groove 122 may be an oblique groove. When the first lens barrel 12 rotates, the guiding protrusion 112 is pulled by the inclined surface of the oblique groove, and the hood 11 is axially displaced.

In other words, when the user uses the hood mechanism 1, the first lens barrel 12 needs to be rotated, and the extension length of the hood 11 in the axial direction of the first lens barrel 12 can be easily adjusted to make the light shielding. The position of the cover 11 can properly respond to ambient light at the scene to reduce scattered light.

Please refer to FIG. 3, which is a third schematic view of an embodiment of the hood mechanism of the present invention. In the above, at least three guiding bumps 112 are respectively connected to the center of the hood 11 to form an imaginary straight line 113, and the angle α between the imaginary straight lines 113 may be equal, and at least three guiding bumps 112 and the hood 11 may be The distance d at the opening 114 is the same. Wherein, at least three guiding bumps 112 of the hood 11 can be connected into an imaginary plane, and at least three guiding bumps 112 are the same as the distance d at the opening 114 in the hood 11 such that the imaginary plane is orthogonal to the optical axis; Since the angles α between the imaginary straight lines 113 are equal, the hood 11 can be stably axially displaced in the first barrel 12. In more detail, since the angle α between the imaginary straight lines 113 formed by the at least three guiding bumps 112 and the center of the hood 11 is equal, and the distance between the at least three guiding bumps 112 and the opening 114 in the hood 11 d is the same such that at least three guiding bumps 112 are evenly distributed over the peripheral wall outer edge 111 of the hood 11 and connected to an imaginary plane orthogonal to the optical axis such that at least three guiding bumps 112 of the pair of hoods 11 When being pulled by the at least three grooves 122, the hood 11 is simultaneously pushed at at least three positions to generate a relatively uniform pushing force, so that the hood 11 can be stably carried out in the first barrel 12. Axial displacement.

If the number of the guiding bumps 112 is designed to be one, since the hood 11 is pushed against only one position, the hood 11 may be biased closer to one side of the inner side of the first lens barrel 12, thereby causing the hood 11 to be adjusted. The problem that the position is not smooth is more likely to cause the hood 11 to be caught in the first barrel 12. Similarly, if the number of the guiding bumps 112 is designed to be two, the pushing force of the axial displacement of the hood 11 is not evenly distributed, and the problem of adjusting the position of the hood 11 may not be smooth. Therefore, the number of the guiding bumps 112 and the corresponding groove 122 is preferably at least three; in actual use, under the condition that the angle α between the imaginary straight lines 113 is equal and the design space is allowed, The number of the guiding bumps 112 and the corresponding groove 122 may also be four, five or more to obtain a more uniform pushing force, so that the axial displacement of the hood 11 is more stable, so in this embodiment The number of guiding bumps 112 is only exemplary and should not be limited thereto.

Please refer to FIG. 4, which is a fourth schematic diagram of an embodiment of the hood mechanism of the present invention. As shown in the figure, the guiding protrusions 124 of the first barrel 12 and the ribs 132 of the second barrel 13 corresponding thereto are at least three, and at least three guiding protrusions 124 are respectively centered on the first barrel 12. The angles β between the imaginary straight lines 125 are equal, and the distance t between the at least three guiding projections 124 and the opening 126 in the first barrel 12 can be made the same. The design concept is similar to the description of Figure 3, and is not described here for the sake of brevity.

It is worth mentioning that at least three ribs 132 of the second lens barrel 13 are oblique ribs, and at least three guiding protrusions 124 of the first lens barrel 12 respectively have inclined surfaces corresponding to the oblique ribs, and at least three ribs 132 respectively The inclined faces of the at least three guiding protrusions 124 are pushed so that when the second lens barrel 13 is rotated in the second direction, the first lens barrel 12 can also be stably rotated in the second rotating direction.

Please refer to FIG. 5, which is a schematic diagram of an embodiment of an image pickup device of the hood mechanism of the present invention. As shown in the figure, the hood mechanism 1 of the present invention can be applied to the imaging device 2, and in a preferred embodiment, the imaging device 2 includes an image sensing component 21, a hood mechanism 1, a control module 22, The module 23 and the control button 24 are driven. The hood mechanism 1 includes a hood 11, a first barrel 12, and a second barrel 13. The connection and actuation relationship of the hood mechanism 1 in the present embodiment are similar to those described above, and are not described herein again. The driving module 22 can be disposed in the hood mechanism 1 or the imaging device 2. The image sensing element 21 is disposed inside the imaging device 2. The image sensing component 21 can be a sensing element such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS), and can be used to sense the image light of the object to The subject is imaged. The control module 22 can be disposed in the imaging device 2 and electrically connected to the driving module 23 to control the actuation of the driving module 23. The control button 24 is disposed outside the imaging device 2 and electrically connected to the control module 22.

When the user takes a picture using the camera 2 and adjusts the position of the hood 11 to prevent the scattered light from affecting the imaging of the image sensing element 21, the first lens barrel 12 can be rotated to adjust the displacement of the hood 11 in the axial direction. The mode of operation is similar to the foregoing, and will not be described again here.

When the user presses the control button 24 of the camera device 2 to turn off the camera device 2, the control module 22 controls the driving module 23 to act to drive the second lens barrel 13 to be rotationally displaced in the second rotation direction. When the second lens barrel 13 is rotationally displaced in the second rotation direction, at least three guiding protrusions 124 of the first lens barrel 12 are respectively pushed by the at least three ribs 132 of the second lens barrel 13, thereby The first barrel 12 is rotationally displaced in the second rotation direction in the second barrel 13, and the hood 11 is axially displaced in the second axial direction in the first barrel 12. The first lens barrel 12 is rotationally displaced in the second rotation direction to drive the hood 11 to perform axial displacement in the second axial direction, which is similar to the foregoing, and will not be described herein. Incidentally, a driving cylinder (not shown) may be connected to the second lens barrel 13 and the driving module 23, and the driving cylinder 23 rotates the driving cylinder to drive the second lens barrel. 13 is rotated, and its detailed operation mode is well known to those skilled in the art, and will not be described again. In view of the above, the driving module 23 does not rotate the second lens barrel 13 as a limitation in the present embodiment.

Briefly, when the lens of the camera 2 is extended, the user can manually rotate the first lens barrel 12 to adjust the position of the hood 11 in response to ambient light, so that the hood 11 can block the scattered light. To avoid affecting the imaging of the image sensing component 21; when the power is turned off, only the control button 24 is pressed, the control module 22 activates the driving module 23 to retract the lens of the camera device 2, and then move it together. The second lens barrel 13 rotates in the second rotation direction, thereby driving the first lens barrel 12 to rotate in the second rotation direction, and axially displacing the hood 11 in the second axial direction to an appropriate position, thereby achieving shutdown. The effect of automatically accommodating the hood 11 is obtained.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1. . . Hood mechanism

11. . . Hood

111. . . The outer edge of the peripheral wall of the hood

112. . . Guide bump

12. . . First barrel

121. . . Inner wall of the first lens barrel

122. . . Trench

123. . . The outer edge of the peripheral wall of the first barrel

124. . . Guide bump

13. . . Second barrel

131. . . Inner wall of the second lens barrel

132. . . rib

Claims (10)

A hood mechanism comprising:
a hood, which is a hollow cylindrical structure, and at least one guiding protrusion is protruded from one end of the outer edge of the peripheral wall;
a first lens barrel is a hollow cylindrical structure, and is sleeved outside the hood. The inner wall of the peripheral wall of the first lens barrel has at least three guiding grooves corresponding to at least three guiding grooves, and the at least three The guiding protrusions are respectively embedded in the at least three grooves, and one end of the outer edge of the peripheral wall of the first barrel is convexly provided with at least three guiding protrusions; and a second barrel is a hollow cylindrical structure. The sleeve is disposed outside the first lens barrel, and the inner wall of the peripheral wall of the second barrel is provided with at least three ribs corresponding to at least three guiding protrusions. The hood mechanism of claim 1, wherein the at least three guiding protrusions of the hood are respectively subjected to the rotation of the first lens barrel in a first rotation direction or a second rotation direction At least three grooves are pulled to displace the hood in a first axial direction or a second axial direction in the first lens barrel. The hood mechanism of claim 2, wherein when the second lens barrel rotates in the second rotation direction, the at least three guiding protrusions of the first lens barrel are respectively subjected to the at least three ribs Pushing, the first lens barrel is rotated in the second rotation direction, and the hood is displaced in the second axial direction. The hood mechanism of claim 3, wherein the at least three ribs are oblique ribs, each of the at least three guiding ribs having a slope corresponding to one of the oblique ribs, the at least three ribs respectively Pushing the slope of the at least three guiding protrusions to stably rotate the first barrel in the second rotation direction. The hood mechanism of claim 1, wherein the at least three guiding protrusions respectively form an imaginary straight line with the center of the hood, and the angle between each of the imaginary straight lines is equal, and the at least three guiding The bumps are respectively connected to the center of the first barrel to form an imaginary line, and the angles between the imaginary lines are equal. A camera device comprising:
An image sensing component is disposed inside the camera device; and a hood mechanism includes: a hood, which is a hollow cylindrical structure, and at least one guiding bump is protruded from one end of the outer edge of the peripheral wall ;
a first lens barrel is a hollow cylindrical structure, and is sleeved outside the hood. The inner wall of the peripheral wall of the first lens barrel has at least three guiding grooves corresponding to at least three guiding grooves, and the at least three The guiding protrusions are respectively embedded in the at least three grooves, and one end of the outer edge of the peripheral wall of the first barrel is convexly provided with at least three guiding protrusions; and a second barrel is a hollow cylindrical structure. The sleeve is disposed outside the first lens barrel, and the inner wall of the peripheral wall of the second barrel is provided with at least three ribs corresponding to at least three guiding protrusions. The image pickup device of claim 6, wherein the at least three guiding protrusions of the hood are respectively subjected to the at least three guiding protrusions when the first lens barrel is rotated in a first rotation direction or a second rotation direction The three gullies are pulled to displace the hood in a first axial direction or a second axial direction in the first lens barrel. The image pickup device of claim 7, wherein when the second lens barrel rotates in the second rotation direction, the at least three guiding protrusions of the first lens barrel are respectively pushed by the at least three ribs And rotating the first lens barrel in the second rotation direction to further displace the light shielding cover in the second axial direction. The image pickup device of claim 8, wherein the at least three ribs are oblique ribs, each of the at least three guiding ribs having a slope corresponding to one of the oblique ribs, wherein the at least three ribs are respectively pushed The inclined surface of the at least three guiding protrusions is pressed to stably rotate the first lens barrel in the second rotation direction. The camera device of claim 6, wherein the at least three guiding protrusions are respectively connected with the center of the hood to form an imaginary straight line, and the angle between each of the imaginary straight lines is equal, and the at least three guiding protrusions are The blocks are respectively connected to the center of the first barrel to form an imaginary line, and the angles between the imaginary lines are equal.