JP2017053976A - Optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical device capable of being reduced in size without being damaged in function.SOLUTION: An optical device comprises an imaging optical system, a lens barrel, a flexible substrate 301, and a battery chamber. The lens barrel includes a fixed cam ring 110 whose inner periphery is formed with a cam groove, and a portion of the cam groove is formed with an area that is parallel to an optical axis of the imaging optical system and where a through area is formed. The battery chamber is formed with a notch part. The flexible substrate 301 is disposed so as to cover the through area of the fixed cam ring 110 and the notch part in the battery chamber.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an optical apparatus.

  Conventionally, a digital camera is required to be reduced in outer size from the viewpoint of portability. The camera disclosed in Patent Document 1 has a layout in which a battery is arranged on the left end side of the camera, a lens barrel in the center of the camera, and a strobe condenser on the right end side of the camera in the horizontal direction of the camera as viewed from the subject side. By having it, miniaturization is realized.

Japanese Patent No. 4033543

  However, the camera layout disclosed in Patent Document 1 cannot meet the recent demand for miniaturization of cameras.

  In view of such a problem, an object of the present invention is to provide an optical apparatus that can be miniaturized without impairing the function.

  An optical apparatus according to one aspect of the present invention includes an imaging optical system, a lens barrel that includes an outer periphery that is parallel to the optical axis of the imaging optical system and that has a penetration area, and the penetration area. And a flexible substrate arranged so as to cover.

  An optical apparatus according to another aspect of the present invention includes an imaging optical system, and a first region in which a first penetrating region is formed on an outer periphery parallel to the optical axis of the imaging optical system. A lens barrel; a battery chamber including a second region in which a second penetrating region is formed at a position opposite to the region; and a flexible substrate disposed to cover the first and second penetrating regions. , Characterized by having.

  ADVANTAGE OF THE INVENTION According to this invention, the optical apparatus which can be reduced in size without impairing a function can be provided.

It is sectional drawing at the time of collapse of the imaging device which is an example of the optical apparatus which concerns on embodiment of this invention. It is sectional drawing at the time of imaging | photography of an imaging device. It is an expanded view of a lens barrel. It is an inner surface development view of a moving cam ring. It is an inner surface development view of a fixed cam ring. It is a perspective view of a lens barrel. It is a perspective view in the state where a flexible substrate was attached to a lens barrel. It is a front view of the imaging device of an assembly state. It is a perspective view of a battery chamber. It is sectional drawing of the imaging device of an assembly state.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same members are denoted by the same reference numerals, and redundant description is omitted.

  First, with reference to FIGS. 1-3, the whole structure of the lens barrel 200 of this embodiment is demonstrated. FIG. 1 is a cross-sectional view of an imaging apparatus that is an example of an optical apparatus according to an embodiment of the present invention when retracted. FIG. 2 is a cross-sectional view of the image pickup apparatus at the time of shooting. FIG. 3 is a development view of the lens barrel 200.

  The lens barrel 200 has a three-group lens configuration and includes a first group unit, a second group unit, and a third group unit. The first group unit includes a first lens group 11, a first group lens holding frame 101 that holds the first lens group 11, and a first group base plate 102 that includes a lens barrier member that holds the first group lens holding frame 101 and protects the lens. Have The second group unit includes a second lens group 12, a diaphragm unit 103 that is a light amount adjusting member, a second group lens holding frame 104 that holds the second lens group 12, and a second group base plate 105 that includes a shutter member (not shown). . The third group unit includes a third lens group 13 and a third group lens holding frame 106 that holds the third lens group 13. Of the imaging optical system of the lens barrel 200, the first lens group 11 and the second lens group 12 are variable power lens groups. The third lens group 13 is a focus lens group for focusing on a subject. Further, the second group unit corrects camera shake or the like during photographing by moving the second group lens holding frame 104 in a direction orthogonal to the optical axis during photographing. In the present embodiment, the lens barrel 200 having a three-group lens configuration is used, but a lens barrel having a different configuration may be used.

  The third group lens holding frame 106 is attached to the sensor holder 107 so as to be linearly movable along the optical axis. The image sensor 15 is attached to the sensor holder 107 via the sensor plate 111. An optical filter 14 sandwiched between a sensor holder 107 and sensor rubber (not shown) is disposed at the front of the image sensor 15. Further, a main guide shaft 113 parallel to the optical axis and a sub guide shaft 114 for restricting rotation are press-fitted into the hole portion of the sensor holder 107 and fixed. Further, the sensor holder 107 is fixed by fastening the focus motor 115 with screws. When the lead screw 115a of the focus motor 115 rotates, a rack (not shown) attached to the third group lens holding frame 106 and the lead screw 115a are screwed together, so that the third group lens holding frame 106 extends along the optical axis. Moving.

  Next, a cylindrical member and a zoom drive mechanism for moving each lens group in the optical axis direction will be described. FIG. 4 is a developed view of the inner surface of the movable cam ring 109. FIG. 5 is an inner surface development view of the fixed cam ring 110. The sensor holder 107 is fixed by fastening the fixed cam ring 110 with screws. A movable cam ring 109 is provided on the inner periphery of the fixed cam ring 110. A rectilinear guide tube 108 is provided on the inner periphery of the moving cam ring 109 to restrict rotation when each lens group moves. The rectilinear guide tube 108 and the moving cam ring 109 are bayonet-coupled and move integrally along the optical axis. Further, the movable cam ring 109 is rotatable relative to the rectilinear guide tube 108.

  As shown in FIG. 3, long grooves 108a, 108b, and 108c are formed along the optical axis on the inner periphery of the rectilinear guide tube. As shown in FIG. 4, cam grooves 109 a, 109 b, and 109 c having different trajectories are formed on the inner periphery of the movable cam ring 109. As shown in FIG. 5, a cam groove 110 a and a linear rectilinear guide groove 110 b are formed on the inner periphery of the fixed cam ring 110. A follower pin 109d provided on the outer periphery of the movable cam ring 109 is fitted in the cam groove 110a, and the follower pin 109d moves along the cam groove 110a. Further, a rectilinear guide portion 108d provided in the rectilinear guide tube 108 is fitted in the rectilinear guide groove 110b, and the rectilinear guide portion 108 is restricted in rotation by the guide groove 108. Therefore, the rectilinear guide tube 108 extends along the optical axis. Only go straight ahead. A follower pin 102a provided on the outer periphery of the first group base plate 102 is fitted in the cam groove 109a, and the follower pin 102a moves along the cam groove 109a. A follower pin 105a provided on the outer periphery of the second group base plate 105 is fitted into the cam groove 109b, and the follower pin 105a moves along the cam groove 109b. A follower pin 103a provided on the outer periphery of the aperture unit 103 is fitted into the cam groove 109c, and the follower pin 103a moves along the cam groove 109c. The first group base plate 102, the diaphragm unit 103, and the second group base plate 105 are linearly moved along the optical axis by being restricted by the long grooves 108a, 108b, and 108c, respectively.

  A zoom motor 112 is attached to the sensor holder 107 via a gear train (not shown). A gear portion 109e that meshes with the last gear 116 of the gear train is formed on the outer periphery of the moving cam ring 109. When the zoom motor 112 is driven, the driving force is transmitted from the final gear 116 to the gear portion 109e, and the moving cam ring 109 rotates. At this time, since the follower pin 109d moves along the cam groove 110a, the movable cam ring 109 moves along the optical axis. Further, the rectilinear guide portion 108d moves rectilinearly along the rectilinear guide groove 110b, so that the rectilinear guide tube 108 moves rectilinearly along the optical axis integrally with the moving cam ring 109. At this time, the first group unit, the aperture unit 103, and the second group unit that follow the moving cam ring 109 also move along the optical axis while being restricted in rotation.

  FIG. 6 is a perspective view of the lens barrel 200. On the outer periphery (arc portion) of the fixed cam ring 110, a notch portion (first portion) parallel to the optical axis and the y direction (for the length in the x direction) for the purpose of downsizing (reducing the length in the x direction). 1 region) 110c is formed. A cam groove 110a is formed in a region corresponding to a region where the cutout portion 110c is formed in the inner periphery of the fixed cam ring 110. Therefore, a hole portion penetrating the fixed cam ring 110 is formed in the cutout portion 110c. A (first through region) 110d is formed. In this embodiment, the hole 110d, which is a part of the cam groove 110a, is used when the lens barrel 200 transitions between the retracted state and the photographing state, and is a region where high accuracy and high strength are not required. .

  Next, the configuration of the flexible substrate 301 for electrically connecting the focus motor 115 and the zoom motor 112 to the power supply substrate will be described with reference to FIG. FIG. 7 is a perspective view of the lens barrel 200 with the flexible substrate 301 attached thereto. On the flexible substrate 301, an electrical connection pattern for connecting to the terminal portion 115b of the focus motor 115 and the terminal portion (not shown) of the zoom motor 112 is formed. The electrical connection pattern is connected to the power supply board on the camera body side via the connection portion 301a.

  The flexible substrate 301 is disposed so as to cover the hole 110 d formed in the notch 110 c of the fixed cam ring 110. By covering the hole 110d with the flexible substrate 301, the hole 110d is not exposed to the outside, and entry of dust and the like from the hole 110c can be prevented. Further, a reinforcing plate (reinforcing member) 301b is attached to a position facing the hole 110d in a region covering the hole 110d of the flexible substrate 301. Therefore, it is possible to prevent the flexible substrate 301 from being damaged by mistake when the follower pin 109d of the moving cam ring 109 passes through the hole 110d. Further, since the reinforcing plate 301b is a light shielding member, it is possible to prevent light from the outside from entering. Furthermore, it is possible to further improve the light shielding property by printing the light shielding property on the region covering the hole 110d of the flexible substrate 301.

  Here, the positional relationship between the constituent members of the imaging apparatus according to the present embodiment will be described with reference to FIG. FIG. 8 is a front view of the imaging device in an assembled state. The lens barrel 200 is disposed at a substantially central position of the imaging device. A battery chamber 201 for storing the battery is disposed on the left side of the lens barrel 200. The strobe light emitting unit 202 is disposed on the right side of the lens barrel 200.

  FIG. 9 is a perspective view of the battery chamber 201 in the present embodiment. A notch 201a is formed on the outer periphery of the battery chamber 201 in order to shorten the length of the imaging device in the x direction. By forming the notch 201a (by cutting the outer periphery of the battery chamber 201 parallel to the optical axis and the y direction), a hole (second penetrating region) 201b is formed at the center of the notch 201a. Is formed.

  10A is a cross-sectional view of the image pickup apparatus in an assembled state, and FIG. 10B is an enlarged view of a portion A surrounded by a dotted line in FIG. As shown in FIGS. 10A and 10B, in this embodiment, the notch portion 110c of the lens barrel 200 and the notch portion 201a of the battery chamber 201 are disposed to face each other, and the flexible substrate 301 has a hole. It arrange | positions so that the parts 110d and 201b may be covered. By arranging in this way, the inside of the lens barrel 200 and the battery chamber 201 is not exposed. Therefore, in this embodiment, it is possible to provide an optical apparatus that can be miniaturized without impairing the function.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

110c Notch (area)
110d hole (through region)
200 Lens barrel 301 Flexible substrate

Claims (7)

A lens barrel that includes an imaging optical system, and a region on the outer periphery that is parallel to the optical axis of the imaging optical system and in which a penetrating region is formed;
An optical apparatus comprising: a flexible substrate disposed so as to cover the penetrating region.   The optical device according to claim 1, wherein the penetrating region is a part of a cam groove formed on an inner periphery of the lens barrel.   The optical apparatus according to claim 2, wherein the cam groove is used when the lens barrel transitions between a photographing state and a retracted state.   The optical apparatus according to claim 1, further comprising a reinforcing member attached to a region of the flexible substrate that covers the penetrating region.   The optical apparatus according to claim 4, wherein the reinforcing member is a light shielding member.   6. The optical apparatus according to claim 1, wherein light-shielding printing is performed on a region of the flexible substrate that covers the penetrating region. A lens barrel comprising: an imaging optical system; and a first region formed on the outer periphery in parallel with the optical axis of the imaging optical system and having a first penetrating region formed thereon;
A battery chamber comprising a second region in which a second through region is formed at a position opposite to the first region;
An optical apparatus comprising: a flexible substrate disposed so as to cover the first and second penetrating regions.