JP2016090790A - Folded image capturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folded image capturing device capable of preventing object light rays reflected from motor support brackets, each supporting a motor with a lead screw, from becoming stray light heading for an image sensor.SOLUTION: A folded image capturing device includes: a movable lens group G3 that is movable in a direction of an optical axis O2 thereof; a folding element L11 that folds and directs object light rays to the movable lens group; an image sensor IS that captures an image from the object light rays exiting from the movable lens; motors 31 and 34 comprising lead screws 31b and 34b that turn about their own axes and in parallel with the optical axis to drive the movable lens group, and motor bodies 31a and 34a that turn the lead screws; and motor support brackets 32 and 35 that support motor bodies and rotatably support the lead screws, the motor support brackets having, on surfaces thereof, reflective recesses 32f and 35f for reflecting some of the object light rays exiting from the movable lens group.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a motor-driven bending imaging apparatus having a bending element.

  In recent years, portable electronic devices mainly for photographing such as digital still cameras and digital video cameras, and portable electronic devices having incidental photographing functions such as camera-equipped mobile phones and portable information terminals have been widely used. There is a demand for downsizing an imaging device mounted on a portable electronic device. As a means for downsizing an imaging device, imaging optics is provided by a bending optical system that reflects (bends) a subject light beam (reflected light reflected by the subject) using a reflecting surface of a reflecting element (bending element) such as a prism or a mirror. It is known that a subject light beam that has been configured to form a system and emitted from an imaging optical system is received by an imaging device. By using an imaging optical system including a bending optical system, the imaging apparatus can be thinned in the traveling direction of incident light from a subject (Patent Document 1).

  In such a bending imaging apparatus, an apparatus that drives a movable lens group positioned on an optical axis bent by a bending element by a pair of motors (motors with screws) has been proposed (Patent Document 2). In Patent Document 2, a pair of motors with screws is fixed to a pair of motor support brackets (motor support brackets), and a pair of holding plates is fixed to the housing of the bending imaging apparatus.

JP 2012-88374 A JP 2010-20193 A

If a movable lens group is arranged between opposing surfaces of a pair of motor support brackets (end surfaces in a direction orthogonal to the plate thickness of the motor support bracket), a bending imaging apparatus having a motor with a screw and a motor support bracket Can be made thinner.
However, with such an arrangement, a part of the subject luminous flux emitted from the movable lens group is reflected by the opposing surfaces of the pair of motor support brackets, and becomes stray light, and this stray light becomes the imaging surface (imaging surface) of the image sensor. ). If stray light enters the imaging surface, a ghost is generated in the captured (captured) image.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a bending imaging apparatus that can suppress subject light flux reflected by a motor support bracket that supports a motor with a lead screw from becoming stray light toward an image sensor.

  The bending imaging apparatus of the present invention includes a movable lens group that can move along its own optical axis direction, a bending element that guides the subject luminous flux to the movable lens group, and the subject luminous flux emitted from the movable lens group. A motor comprising: an image pickup device that picks up an image; a lead screw that drives the movable lens group by rotating around its own axis parallel to the optical axis; and a motor body that rotates the lead screw; A motor support bracket that supports the motor main body and rotatably supports the lead screw, and a reflection of a part of the subject luminous flux emitted from the movable lens group is reflected on a surface of the motor support bracket. It is characterized by forming a concave portion for use.

A light-shielding frame movable along the optical axis, and when the light-shielding frame and the movable lens group move relative to each other in the optical axis direction, the reflection concave portion and the light-shielding frame of the motor support bracket are You may oppose in the direction orthogonal to an axis | shaft.
In this case, when the light shielding frame is in a stationary state, the reflecting recess and the light shielding frame may face each other in a direction orthogonal to the optical axis.

  The movable lens group includes a first movable lens group and a second movable lens group that move independently of each other, and the motor drives the first movable lens group and the second movable lens group, respectively. And a second motor, wherein the motor support bracket includes a first motor support bracket and a second motor support bracket that respectively support the first motor and the second motor, and the first motor support bracket. The movable lens group and the light shielding frame may be positioned between the second motor support bracket and the second motor support bracket.

  A fixed lens group positioned on the optical axis and located on the opposite side of the bending element across the movable lens group, and when the distance between the fixed lens group and the movable lens group is maximized, When a part of the subject luminous flux emitted from the movable lens group moves toward the motor support bracket and the distance between the fixed lens group and the movable lens group becomes maximum, the fixed lens group and the movable lens group A portion of the subject luminous flux emitted from the movable lens group having a maximum distance between the center point between the fixed lens group and the position in the optical axis direction of the central point between When the reflected light beam reflected toward the image sensor side by the surface of the motor support bracket having no recess is used as a virtual reflected light beam, the movable lens having the maximum distance from the fixed lens group The shape of the reflection concave portion is set so that the amount of reflected light beam reflected from the reflection concave portion to the image sensor side by a part of the subject light beam emitted from the group is smaller than the light amount of the virtual reflected light beam. May be.

  The reflecting concave portion may include a reflecting surface formed of two planes that reflect a part of the subject light beam emitted from the movable lens group and intersect each other.

  By taking into account the optical path of the subject light flux and the position of the image sensor, and by devising the shape of the reflective recess formed on the surface of the motor support bracket, the subject light beam reflected by the reflective recess becomes stray light and the image sensor. It is possible to suppress going to.

It is the external appearance perspective view seen from the to-be-photographed object side of one Embodiment of the bending imaging device of this invention. FIG. 2 is an external perspective view showing a flexible imaging substrate of the bending imaging apparatus as viewed from the opposite side to FIG. It is a disassembled perspective view of the bending imaging device seen from the opposite side to FIG. It is the perspective view seen from the to-be-photographed object side of the bending imaging device which removes some members and a movable lens group is located in a tele end position. FIG. 5 is a perspective view of a bent imaging apparatus in which some members are removed and the moving lens group is positioned at the wide end position, as viewed from the opposite side to FIG. 4. It is a perspective view similar to FIG. 5 when a moving lens group is located in a tele end position. It is a vertical side view of the bending imaging apparatus, with the light shielding frame omitted, when the moving lens group is located at the wide end position. FIG. 6 is a perspective view of a rod, a third group frame, a light shielding frame, and a tension spring when a moving lens group is positioned at a wide end position. FIG. 5 is a perspective view of a rod, a third group frame, a light shielding frame, and a tension spring when the moving lens group is located at a tele end position. It is a perspective view of the light-shielding frame and movable contact member which were integrated. It is a perspective view of the light-shielding frame when a movable contact member is removed. It is a vertical side view of a cover member, a rod, a third group frame, a light shielding frame, and a movable contact member when the moving lens group of the bending imaging apparatus is located at the wide end position. It is a vertical side view similar to FIG. 12 when a moving lens group is located in a tele end position. It is the figure seen from the to-be-photographed object side of an imaging optical system, a light-shielding frame, and a 3 group motor support bracket when the moving lens group of a bending imaging device is located in a wide end position. It is a figure similar to FIG. 14 when a moving lens group is located in a tele end position. It is a figure similar to FIG. 15 of a comparative example. It is the typical enlarged view seen from the to-be-photographed object side of the support bracket for 3 group motors. It is a perspective view of the light-shielding frame and movable contact member which were integrated of the 1st modification. It is a perspective view of the light-shielding frame when a movable contact member is removed. It is a perspective view of a 3 group frame and a light-shielding frame when a moving lens group is located in a tele end position. It is the typical enlarged view seen from the to-be-photographed object side of a part of 3rd group motor support bracket of a 2nd modification. It is the typical enlarged view seen from the to-be-photographed object side of a part of 3rd group motor support bracket of a 3rd modification. It is the typical enlarged view seen from the to-be-photographed object side of a part of 3rd group motor support bracket of a 4th modification. It is the typical enlarged view seen from the to-be-photographed object side of a part of 3rd group motor support bracket of a 5th modification.

Hereinafter, a bending imaging apparatus 10 according to an embodiment of the present invention will be described with reference to FIGS. The following directions in the following description are based on the arrow lines in the drawings. The bending imaging apparatus 10 of this embodiment can be mounted on a portable device such as a portable terminal or a tablet computer.
As shown in FIG. 7 and the like, the imaging optical system of the bending imaging apparatus 10 includes a first lens group (front lens group) G1, a second lens group G2 (movable lens group), and a third lens group (movable lens group) G3. And a fourth prism group G4 (fixed lens group), and a first prism (bending element) L11 included in the first lens group G1 and a second prism (bending element) positioned on the image side of the fourth lens group G4. In L12, a bending optical system that reflects a subject light beam (a light beam reflected by the subject) at a substantially right angle is provided. As shown in FIG. 7, the first lens group G1 includes a first lens (front lens) L1 positioned in front of the entrance surface L11-a of the first prism L11 (subject side), the first prism L11, The second lens L2 is located on the right side (image side) of the exit surface L11-b of the first prism L11. The second lens group G2 to the fourth lens group G4 are each a lens group that does not include a reflecting element such as a prism. Hereinafter, the optical axis of the first lens group G1 is the optical axis O1 before bending, the optical axis of the second lens group G2 to the fourth lens group G4 is the optical axis of the movable lens group O2, and the optical axis after being reflected by the second prism L12. The imaging element optical axis O3. The pre-bending optical axis O1, the movable lens group optical axis O2, and the image sensor optical axis O3 are included in one plane (a plane parallel to the paper surface of FIG. 7).

  As shown in FIG. 7, the subject luminous flux incident on the first lens L1 along the pre-bending optical axis O1 enters the first prism L11 through the incident surface L11-a, and the reflecting surface L11-c in the first prism L11. Is reflected in the direction along the optical axis O2 of the movable lens group and is emitted from the emission surface L11-b. Subsequently, the subject luminous flux passes through each lens from the second lens group G2 to the fourth lens group G4 located on the movable lens group optical axis O2, enters the second prism L12 through the incident surface L12-a, and enters the second prism. The light is reflected in the direction along the image sensor optical axis O3 by the reflection surface L12-c in L12 and emitted from the output surface L12-b, and forms an image on the image pickup surface of the image sensor IS.

As shown in FIGS. 1 to 3 and the like, the bending imaging apparatus 10 includes a first group block 12 having a first lens group G1, a second lens group G2, a third lens group G3, a fourth lens group G4, and a second prism L12. And a main body module 11 including the imaging element IS, a first group block cover 14, a motor unit 30, and a cover member 40 (housing).
The main body module 11 includes a box-shaped housing 13 that is long in the direction of the movable lens group optical axis O2 and thin in the optical axis O1 direction before bending and the optical axis O3 direction of the imaging device. The housing 13 is a hollow member that opens on the entire rear surface and on the left side of the front surface. A first group block 12 having a first lens group G1 is fixedly attached to one end of the inner space of the housing 13 in the longitudinal direction (the left end in FIGS. 1, 2, and 7). The fourth lens group G4, the second prism L12, and the imaging element IS are fixedly held on the other end (right end) side in the longitudinal direction (see FIG. 7). The imaging element IS is connected to a drive control circuit of a portable device on which the bending imaging device 10 is mounted via a flexible printed board (not shown).

  A pair of upper and lower support recesses 13a are formed on the rear surface of the left side portion of the housing 13, and a columnar left support projection 13b for a bracket protrudes rearward from the bottom surface of the upper and lower support recesses 13a. It is. On the other hand, on the rear surface of the right side portion of the housing 13, a holding cover rear locking projection 13 c and an FPC locking projection 13 d positioned above the holding cover rear locking projection 13 c are provided so as to project rearward. It is. Further, a right-side holding protrusion 13e for the holding cover protrudes from the right end surface of the housing 13. Further, a holding cover side locking projection 13f and a first group block cover locking projection 13g are provided on the upper and lower surfaces of the housing 13, and a pair of first group block cover locking projections are provided on the left side surface of the housing 13. A protrusion 13h is provided protruding. Further, a pressing cover engaging recess 13i is formed in the upper and lower surfaces of the housing 13, and a guide hole 13j (light-shielding frame movement control means) which is a long hole extending in the left-right direction is formed in the front surface of the housing 13. (See FIG. 1). Further, motor holding recesses 13k are provided in the upper and lower sides of the right end of the housing 13, respectively.

  As shown in FIGS. 1 and 2, a first group block cover 14 is mounted on the left side of the housing 13. The upper and lower surfaces and the left side of the first group block cover 14 are provided with mounting locking holes 14a and mounting locking holes 14b. The first group block cover 14 is configured such that the mounting locking hole 14a and the mounting locking hole 14b are locked to the first group block cover locking projection 13g and the first group block cover locking projection 13h of the housing 13, respectively. The mounting state with respect to the housing 13 is maintained. Further, a lens exposure hole 14c is formed in the front surface of the first group block cover 14, and the first prism L11 is exposed forward through the lens exposure hole 14c (see FIG. 1).

  As shown in FIG. 4, a pair of upper and lower rods 22, 23 parallel to the movable lens group optical axis O <b> 2 are arranged inside the housing 13, and both left and right ends of the rods 22, 23 are inside the housing 13. It is fixed. As shown in FIG. 4 and the like, through holes 20b formed in two upper and lower positions of the second group frame 20 holding the second lens group G2 and upper and lower sides of the third group frame 21 (lens support frame) holding the third lens group G3. The through holes 21b formed at two places are slidably fitted to the rods 22 and 23, respectively. As shown in FIG. 8 and FIG. 9, a pair of upper and lower pressing portions 21 a protruding toward the right side are projected from the rear end portion of the third group frame 21.

As shown in FIG. 5, FIG. 6, FIG. 8, FIG. 9, etc., a light shielding frame 16 made of elastic hard resin is disposed between the third group frame 21 and the fourth lens group G4. A central through hole 16a having a substantially rectangular side view is formed in the central portion of the light shielding frame 16, and a pair of upper and lower rod insertion holes 16b and 16c are formed in the front portion of the light shielding frame 16. On the left side surface of the light shielding frame 16, one positioning projection 16d and a pair of upper and lower mounting projections 16e and 16f are provided to project toward the left side. Further, a stopper 16h (light shielding frame movement control means) is provided on the upper part of the front end surface of the light shielding frame 16 so as to project forward. Further, as shown in FIGS. 8 to 11, a light-shielding protrusion 16k is provided on the upper end of the rear edge of the light-shielding frame 16 so as to protrude toward the left side.
A movable contact member 17 made of an elastic resin material is fixed to the left side surface of the light shielding frame 16. As shown in FIG. 10, the movable contact member 17 is substantially U-shaped in a side view. A locking recess 17a and a locking hole 17b are formed on the upper side and lower side of the movable contact member 17, and a positioning recess 17c is formed on the front edge of the rear side. The movable contact member 17 has a light shielding frame on its right side while fitting the mounting projection 16f, the mounting projection 16e, and the positioning projection 16d into the locking recess 17a, the locking hole 17b, and the positioning recess 17c. 16 is fixed to the light shielding frame 16 by bonding to the left side surface of 16 (the hatched area in FIG. 11 is the adhesive application area). When the movable contact member 17 is fixed to the light shielding frame 16, the rear edge portion of the movable contact member 17 projects rearward from the rear edge portion of the light shielding frame 16.
The light shielding frame 16 integrated with the movable contact member 17 has the rod insertion hole 16b and the rod insertion hole 16c fitted to the rod 22 and the rod 23, respectively, so that the movable lens group optical axis O2 is centered on the center through hole 16a. The rod 22 and the rod 23 are slidably supported in a passing manner. As shown in FIG. 1, the stopper 16 h of the light shielding frame 16 is engaged with the guide hole 13 j of the housing 13 so as to be slidable in the left-right direction.
Further, the left and right ends of a tension spring 18 (biasing means) whose axis extends in the left-right direction are engaged with the light shielding frame 16 and the third group frame 21, respectively. Therefore, when the urging force other than the tension spring 18 is not exerted on the light shielding frame 16 and the third group frame 21, the left side surface of the light shielding frame 16 and the right side surface of the third group frame 21 are in contact with each other. It becomes an integrated state. Then, as shown in FIGS. 8 and 12, since the upper and lower pressing portions 21a of the third group frame 21 press the rear edge portion 17d of the movable contact member 17 from the left side to the right side, the movable contact member 17 as shown in FIG. The rear edge portion 17 d is spaced forward from the inner surface (front surface) of the cover member 40, and a clearance is formed between the rear edge portion 17 d of the movable contact member 17 and the inner surface of the cover member 40. On the other hand, as shown in FIGS. 9 and 13, when the light shielding frame 16 and the third group frame 21 are pulled apart in the left-right direction against the urging force of the tension spring 18, the upper and lower pressing portions 21a of the third group frame 21 are movable contact members. 17, the rear edge of the movable contact member 17 tries to return to its initial shape by its own elastic force. Therefore, the rear edge portion of the movable contact member 17 contacts the inner surface of the cover member 40 as shown in FIG.

3 to 6, the motor unit 30 includes a second group motor 31, a second group motor support bracket 32, a nut 33, a third group motor 34, a third group motor support bracket 35, a nut 36, a cushion material 37, And a flexible printed circuit board 38.
The second group motor 31 (first motor) (motor) (driving means) is rotatable about its own axis parallel to the movable lens group optical axis O2 and protruding from the motor main body 31a to the left side. And a lead screw 31b. A female screw hole 33 a drilled in the nut 33 is screwed into the lead screw 31 b of the second group motor 31.
The second group motor support bracket 32 (motor support bracket), which is a press-formed product of a metal plate, is a plate-like member extending in the left-right direction as a whole. The second group motor support bracket 32 includes a main body constituting portion 32a which is a flat plate portion orthogonal to the front-rear direction, a motor main body supporting piece 32b extending forward from the right end portion of the main body constituting portion 32a, and a main body constituting portion 32a. And a screw support piece 32c extending from the vicinity of the left end of the lower edge portion. A circular hole is formed as a through hole in the motor body support piece 32b. The right end portion of the screw support piece 32c is constituted by a plate-like portion orthogonal to the left-right direction, and a circular support hole 32d concentric with the circular hole of the motor body support piece 32b is formed in the right end portion. It is drilled as. An engagement hole 32e is formed in the left end portion of the main body constituting portion 32a. Further, a reflection concave portion 32f is formed in the upper edge portion of the main body constituting portion 32a, and the right and left portions of the reflection concave portion 32f are left and right when the second group motor support bracket 32 is viewed in the front-rear direction. The reflecting surface 32f1 and the retracting surface 32f2 are inclined with respect to (see FIGS. 3 to 6 and FIGS. 14 to 17). Further, an elastic cushion material 37 is fixed to the rear surface of the main body constituting portion 32a (see FIG. 3).
The second group motor 31 integrated with the nut 33 is fixedly attached to the second group motor support bracket 32. Specifically, the left end portion of the lead screw 31b can be rotated by the circular support hole 32d of the screw support piece 32c while the lead screw 31b is positioned in front of the main body constituting portion 32a through the circular hole of the motor support piece 32b. Further, the left side surface of the motor main body 31a is fixed to the right side surface of the motor main body support piece 32b.
The third group motor 34 (second motor) (motor) has the same specifications as the second group motor 31, and includes a motor body 34a and a lead screw 34b corresponding to the motor body 31a and the lead screw 31b.
A female screw hole 36a of a nut 36 having the same specifications as the nut 33 is screwed into the lead screw 34b of the third group motor 34 (see FIG. 3).
As shown in FIG. 5 and the like, the third group motor support bracket 35 (motor support bracket) is the same material as the second group motor support bracket 32 and has a vertically symmetrical shape. That is, the main body structure corresponding to the main body structure portion 32a, the motor main body support piece 32b, the screw support piece 32c, the circular support hole 32d, the engagement hole 32e, and the reflection recess 32f (reflection surface 32f1, retraction surface 32f2). Part 35a, motor body support piece 35b, screw support piece 35c, circular support hole 35d, engagement hole 35e, and reflection recess 35f (reflection surface 35f1, retraction surface 35f2). A cushion material 37 is fixed to the rear surface.
The third group motor 34 integrated with the nut 36 is fixedly attached to the third group motor support bracket 35 in the same manner as the second group motor 31 (nut 33) and the second group motor support bracket 32.

  As shown in FIG. 3, two portions of the flexible printed circuit board 38 are fixed to the second group motor support bracket 32 and the third group motor support bracket 35, respectively, and the motor main body 31a with respect to the circuit pattern of the flexible printed circuit board 38. And terminals of the motor body 34a are connected. Further, an attachment hole 38a is formed in the vicinity of the attachment portion of the flexible printed board 38 to the motor body 34a.

  The motor unit 30 configured as described above is mounted in the housing 13 from the rear while fitting the motor body 31a and the motor body 34a into the upper and lower motor holding recesses 13k of the housing 13, respectively. The left and right support protrusions 13b for the upper and lower brackets are fitted into the engagement holes 32e and the engagement holes 35e while fitting the left ends of the main body structure 32a and the main body structure 35a into the upper and lower support recesses 13a of the housing 13, respectively. Further, the FPC locking projection 13d of the housing 13 is fitted into the mounting hole 38a of the flexible printed circuit board 38. Further, the nut 33 engages with a nut engaging recess 20a formed in the second group frame 20 (see FIGS. 5 and 6), and the nut 36 engages with a nut engaging recess (not shown) formed in the third group frame 21. doing. Therefore, the nut 33 and the second group frame 20 can move together in the direction of the movable lens group optical axis O2, and the nut 36 and the third group frame 21 can move together in the direction of the movable lens group optical axis O2. When viewed in the front-rear direction, the second group frame 20, the third group frame 21, and the light shielding frame 16 are positioned between the second group motor support bracket 32 and the third group motor support bracket 35. Further, the second group frame 20, the third group frame 21, and a part of the light shielding frame 16 are positioned on a plane on which the main body component 32a and the main body component 35a are located.

The cover member 40 that is a press-formed product of a metal plate shown in FIGS. 1 to 3 includes a flat main body flat plate portion 40a that is orthogonal to the front-rear direction. Furthermore, the cover member 40 includes a first engagement piece 40c, a second engagement piece 40f, and a third engagement piece 40g that project from the peripheral edge of the main body flat plate portion 40a. A first group block exposure hole 40b is formed in the vicinity of the left end portion of the main body flat plate portion 40a, and a circular locking hole 40d is formed in the right end portion of the main body flat plate portion 40a. Further, a rectangular engagement hole 40e is formed in the first engagement piece 40c, and a square engagement piece 40h is formed in the third engagement piece 40g.
The cover member 40 covers the rear surface of the housing 13 and the motor unit 30 with the main body flat plate portion 40a from the rear, and the circular engagement hole 40d, the rectangular engagement hole 40e, and the square engagement piece 40h are held on the back side of the housing 13 for the cover. The engaging projection 13c engages with the restraining cover right retaining projection 13e and the restraining cover side retaining projection 13f, and engages the second engaging piece 40f with the restraining cover engaging recess 13i of the housing 13. Thus, the housing 13 is mounted in a fixed state. When the cover member 40 is attached to the housing 13, the front surface of the main body flat plate portion 40a presses the cushion members 37 provided on the second group motor support bracket 32 and the third group motor support bracket 35 from the rear. That is, the motor unit 30 (second group motor 31, second group motor support bracket 32, third group motor 34, third group motor support bracket 35) is sandwiched between the housing 13 and the cover member 40 from the front and rear directions. The second group motor 31, the second group motor support bracket 32, the third group motor 34, and the third group motor support bracket 35 are positioned in the front-rear direction with respect to the housing 13. Further, the rear end portion of the first group block 12 is exposed through the first group block exposure hole 40 b of the cover member 40.

By connecting the flexible printed circuit board 38 of the bending imaging apparatus 10 to the drive control circuit of the portable device, the power of the battery of the portable device is changed to the image pickup element IS via the drive control circuit, the flexible printed circuit board, and the flexible printed circuit board 38. When the second group motor 31 and the third group motor 34 can be supplied, the second group motor 31, the third group motor 34, and the image sensor IS can be operated. Further, by using the second group motor 31 and the third group motor 34, the second group frame 20 (second lens group G2) and the third group frame 21 (third lens group G3) are advanced and retracted in the directions of the rods 22 and 23 independently of each other. Then, the imaging optical system performs the zooming operation and the focusing operation, so that it is possible to take an image with the subject image zoomed and focused.
The second group frame 20 (second lens group G2), the third group frame 21 (third lens group G3), and the light shielding frame 16 are driven by the driving forces of the second group motor 31 and the third group motor 34 as shown in FIGS. 12 and 14, the light shielding frame 16 approaches the fourth lens group G4, and the second group frame 20 and the third group frame 21 approach each other. Further, the urging force of the tension spring 18 brings the light shielding frame 16 and the third group frame 21 into an integrated state, and the rear edge portion 17d of the movable contact member 17 pressed by the upper and lower pressing portions 21a of the third group frame 21 is the cover member. The rear edge portion 17d of the movable contact member 17 is spaced from the inner surface (front surface) of the front 40 and forms a clearance with the inner surface of the cover member 40 (see FIG. 12). At this time, as shown in FIG. 1, the stopper 16h of the light shielding frame 16 contacts the right end surface of the guide hole 13j. Further, the position of the light shielding frame 16 in the movable lens group optical axis O2 direction (left-right direction position) is located on the right side of the reflection concave portions 32f and 35f of the second group motor support bracket 32 and the third group motor support bracket 35 (FIG. 14).
In this state, when the bending image sensor 10 is directed toward the subject positioned forward, the subject luminous flux is reflected in the first lens group 1, the second lens group G2, the third lens group G3, the light shielding frame 16 (the central through hole 16a), and The image is picked up (received) by the image pickup surface of the image pickup element IS through the fourth lens group G4.
Further, since the light shielding frame 16 and the third group frame 21 are integrated (because the interval between the light shielding frame 16 and the third group frame 21 becomes narrow), most of the subject luminous flux transmitted through the third lens group G3 is the light shielding frame 16. To the fourth lens group G4. Therefore, the subject luminous flux that has passed through the third lens group G3 is directed toward the inner surface of the cover member 40 through the gap between the rear edge of the light shielding frame 16 (movable contact member 17) and the inner surface of the cover member 40, or the third lens group. There is little possibility that the subject luminous flux transmitted through G3 is reflected by the upper surface of the main body constituting portion 32a and the lower surface of the main body constituting portion 35a. Since the bending imaging device 10 is a small (thin) type, the distance between the rear edge of the light shielding frame 16 (movable contact member 17) and the inner surface of the cover member 40 is narrow, and the upper surface of the main body constituting portion 32a and the main body constituting portion 35a. The space between the lower surface and the light shielding frame 16 is narrow. For this reason, if the subject light flux that has passed through the third lens group G3 is incident on the inner surface of the cover member 40, the upper surface of the main body constituting portion 32a, or the lower surface of the main body constituting portion 35a, the subject light flux becomes harmful light (stray light). There is an increased possibility that a ghost occurs in the image captured by the image sensor IS toward the lens group G4 and the image sensor IS. However, in this embodiment, such a problem may occur when the second group frame 20 (second lens group G2), the third group frame 21 (third lens group G3), and the light shielding frame 16 are positioned at the wide end position. The nature is small.

On the other hand, the second group frame 20 (second lens group G2), the third group frame 21 (third lens group G3), and the light shielding frame 16 positioned at the wide end position are rotated in the normal direction. As a result, the second group frame 20 (second lens group G2) and the third group frame 21 (third lens group G3) are rods when moved to the tele end position side in FIGS. 6, 9, 13, and 15. The light shielding frame 16 moves to the left integrally with the third group frame 21 while moving to the left along the lines 22 and 23 and sliding the stopper 16h to the left with respect to the guide hole 13j. When the second group frame 20 (second lens group G2), the third group frame 21 (third lens group G3), and the light shielding frame 16 reach a predetermined intermediate position between the wide end position and the tele end position, the light shielding frame. Since the 16 stoppers 16h come into contact with the left end surface of the guide hole 13j of the housing 13, the further leftward movement of the light shielding frame 16 is restricted (becomes stationary), and the light shielding frame 16 is supported by the second group motor support bracket 32, The reflective concave portions 32f and 35f of the third group motor support bracket 35 and the movable lens group optical axis O2 are opposed to each other in a direction orthogonal thereto (see FIG. 15). That is, the moving region of the third group frame 21 from the wide end position where the stopper 16h of the light shielding frame 16 contacts the right end surface of the guide hole 13j of the housing 13 to the third group frame 21 between the stopper 16h and the left end surface of the guide hole 13j The frame 21 is an “integrated movement region” in which the light shielding frame 16 and the movable lens group optical axis O2 move integrally. Since the rear edge portion 17d of the movable contact member 17 forms a clearance with the inner surface of the cover member 40 while the third group frame 21 (and the light shielding frame 16) moves in the integral movement region, the light shielding is performed. The frame 16 (and the third group frame 21) can move smoothly with respect to the inner surface of the cover member 40.
Then, when the second group frame 20 (second lens group G2) and the third group frame 21 (third lens group G3) move further from the intermediate position toward the tele end position side, as shown in FIG. 9 and FIG. The third group frame 21 moves away from the light shielding frame 16 to the left against the biasing force of the spring 18 (relatively moves). That is, the moving region of the third group frame 21 from the intermediate position (the position where the stopper 16 h contacts the left end surface of the guide hole 13 j) to the tele end position indicates that the third group frame 21 is movable lens group light with respect to the light shielding frame 16. This is a “relative movement region” that moves relatively in the direction of the axis O2. When the third group frame 21 moves the relative movement region to the tele end position side, the upper and lower pressing portions 21a of the third group frame 21 are separated to the left side from the rear edge portion 17d of the movable contact member 17, and the rear edge of the movable contact member 17 is reached. Since the portion 17d attempts to return to the initial shape by its own elastic force, the rear edge portion 17d of the movable contact member 17 contacts the inner surface of the cover member 40 as shown in FIG. When the third group frame 21 (third lens group G3) moves further from the intermediate position toward the telephoto end position, the distance between the light shielding frame 16 and the third group frame 21 becomes wider as shown in FIGS. In addition, part of the subject light flux that has passed through the third lens group G3 may become harmful light rays (stray light) and may travel between the rear edge of the light shielding frame 16 and the inner surface of the cover member 40. However, at this time, the rear edge portion 17 d of the movable contact member 17 fills the gap between the rear edge portion of the light shielding frame 16 and the inner surface of the cover member 40, so that it moves between the rear edge portion of the light shielding frame 16 and the inner surface of the cover member 40. There is little risk of ghosting occurring in the image captured by the image sensor IS due to the subject light flux.
Further, when the second group frame 20 (second lens group G2) and the third group frame 21 (third lens group G3) move further from the intermediate position toward the tele end position, the subject transmitted through the third lens group G3. The possibility that a part of the light beam is reflected by the upper surface of the main body constituting portion 32a and the lower surface of the main body constituting portion 35a increases. When the second lens group G2 and the third lens group G3 move to the tele end position, the movable lens group between the subject side surface (left side surface) of the fourth lens group G4 and the imaging side surface (right side surface) of the third lens group G3. The interval in the direction of the optical axis O2 is maximized, and the possibility that a part of the subject light beam transmitted through the third lens group G3 is reflected by the upper surface of the main body constituting portion 32a and the lower surface of the main body constituting portion 35a is most enhanced. As shown in the comparative example of FIG. 16 (the positions of the second lens group G2 and the third lens group G3 are the tele end positions), the reflecting recess 32f is temporarily added to the second group motor support bracket 32 and the third group motor support bracket 35. , 35f are not formed (the portions corresponding to the reflective recesses 32f, 35f are covered with a metal plate), a part of the subject light beam that has passed through the third lens group G3 is the upper surface of the main body constituting portion 32a and the main body. It becomes a virtual reflected light beam that is reflected by the lower surface of the component part 35a and enters the imaging surface of the imaging element IS via the fourth lens group G4 and the second prism L12. Since this virtual reflected light beam (at least a part thereof) becomes a harmful ray and enters the imaging surface of the image sensor IS, there is a possibility that a ghost may occur in an image captured by the image sensor IS due to the virtual reflected light beam. growing. However, in this embodiment, the reflection concave portions 32f and 35f of the second group motor support bracket 32 and the third group motor support bracket 35 are formed, and the second lens group G2 and the third lens group G3 are positioned at the tele end position. Then, the movable lens group optical axis O2 direction position of the center point between the subject side surface (left side surface) of the fourth lens group G4 and the movable lens group optical axis O2 direction of the imaging side surface (right side surface) of the third lens group G3 is determined. This coincides with a part of the reflective recesses 32f and 35f. Therefore, the subject luminous flux that has passed through the third lens group G3 located at the tele position (the luminous flux that becomes a virtual reflected luminous flux when reflected by the upper surface of the main body constituting portion 32a and the lower surface of the main body constituting portion 35a in the comparative example of FIG. 16). Although reflected by the reflecting surface 32f1 of the component 32a and the reflecting surface 35f1 of the body component 35a, the subject luminous flux reflected by the reflecting surface 32f1 and the reflecting surface 35f1 is in a direction different from the fourth lens group G4 as shown in FIG. Head. For this reason, the amount of the reflected light beam reflected by the reflecting surface 32f1 and the reflecting surface 35f1 and incident on the imaging element IS is smaller than the light amount of the virtual reflected light beam. Therefore, there is little possibility that a ghost is generated in an image captured by the imaging element IS due to the subject light flux reflected by the reflecting surface 32f1 and the reflecting surface 35f1.
In this embodiment, in order for the reflecting surface 32f1 and the reflecting surface 35f1 to exhibit this function, the angles of the reflecting surfaces 32f1 and 35f1, the retracting surface 32f2, and the retracting surface 35f2 of the reflecting recesses 32f and 35f are shown in FIG. It is sized. That is,
θmax: (with or without the reflective recesses 32f and 35f) The second group motor support bracket 32 and the third group motor support bracket are transmitted through the third lens group G3 positioned at the tele position. Inclination angle θmin of the maximum inclination angle with respect to the movable lens group optical axis O2 among all rays directed to (reflected by) 35 (in both cases where the reflection concave portions 32f and 35f are formed and not formed). ) With respect to the movable lens group optical axis O2 among all rays that pass through the third lens group G3 located at the telephoto position and are directed to (reflected by) the second group motor support bracket 32 and the third group motor support bracket 35. When the inclination angle α of the smallest inclination angle is the inclination angle of the retracting surfaces 32f2 and 35f2 with respect to the optical axis O2 of the movable lens group,
Α <θmax is set so that the subject luminous flux is incident on the reflecting surfaces 32f1 and 35f1.
Also, when β is the inclination angle of the reflecting surfaces 32f1 and 35f1 with respect to the movable lens group optical axis O2, the inclination angle of the subject light beam incident on the reflecting surfaces 32f1 and 35f1 with respect to the movable lens group optical axis O2 is θ, and the reflecting surface 32f1 , When the inclination angle of the virtual reflected light beam subject light beam (harmful light beam) reflected by 35f1 is θ ′,
θ ′ = 2β + θ.
In order for θ ′ to always be a certain value or more, it is necessary to consider a case where θ is minimum.
Therefore, it is necessary to set β so as to satisfy θ ′ <2β + θmin. In this embodiment, since θ ′> 90 ° and θmin = 20 °, β = 35 °.
The sizes of α and β are the positions of the fourth lens group G4, the image sensor IS, etc., the vertical distance between the second group motor support bracket 32 and the third group motor support bracket 35 and the light shielding frame 16, and θ and θmax. And can be appropriately adjusted according to the magnitude of θmin.
Note that the light-projecting projection 16k provided on the light-shielding frame 16 shields the subject luminous flux (a part thereof) that passes through the third lens group G3 and then travels toward the periphery of the reflective surface 32f1 and the reflective surface 35f1. Increasing the size of α and β compared to the case where the light shielding protrusion 16k is not provided (reducing the opening angle of the reflecting recesses 32f and 35f and reducing the lateral width of the reflecting recesses 32f and 35f). Is possible. If the left and right widths of the reflective recesses 32f and 35f are increased, the mechanical strength of the second group motor support bracket 32 and the third group motor support bracket 35 is reduced.

  It is possible to move the second group frame 20, the third group frame 21, and the light shielding frame 16 from the tele end position side to the wide end position side by reversing the second group motor 31 and the third group motor 34. When the third group frame 21 returns to the integral movement region, the third group frame 21 and the light shielding frame 16 are once again integrated by the urging force of the tension spring 18.

Although the present invention has been described using the present embodiment, the present invention can be implemented with various modifications.
For example, you may implement in the aspect of the 1st modification shown in FIGS. 18-20.
On the left side surface of the light shielding frame 16 'of the first modified example, a positioning projection 16i and a positioning projection 16j located rearward of the central through hole 16a project leftward. The positioning protrusion 16i is an L-shaped protrusion, and the positioning protrusion 16j is a linear protrusion extending in the vertical direction. The movable contact member 17 ′ is made of the same material as the movable contact member 17, and the adhesive (the hatched area in FIG. 19 is the adhesive application area while the front surface thereof is in contact with the positioning protrusion 16 i and the positioning protrusion 16 j. ) To the left side of the light shielding frame 16. When the movable contact member 17 ′ is fixed to the light shielding frame 16 ′, the rear edge portion of the movable contact member 17 ′ protrudes rearward from the rear edge portion of the light shielding frame 16 ′.
One pressing portion 21a ′ protruding toward the left side protrudes from the rear end portion of the left side surface of the third group frame 21 ′. As shown in the drawing, the vertical dimension of the pressing portion 21a 'is longer than that of the pressing portion 21a.
Although not shown, the left and right ends of the tension spring 18 are engaged with the light shielding frame 16 ′ and the third group frame 21 ′, respectively. Therefore, when the urging force other than the tension spring 18 is not exerted on the light shielding frame 16 ′ and the third group frame 21 ′, the light shielding frame 16 ′ and the third group frame 21 ′ become an integrated state, and the pressing portion 21a of the third group frame 21 ′. 'Presses the rear edge portion of the movable contact member 17' from the left side to the right side, and the rear edge portion of the movable contact member 17 'moves forward from the inner surface of the cover member 40. On the other hand, when the light shielding frame 16 ′ and the third group frame 21 ′ are pulled apart in the left-right direction against the urging force of the tension spring 18, the pressing portion 21 a ′ of the third group frame 21 ′ starts from the rear edge of the movable contact member 17 ′. Since it is separated to the left side, the rear edge of the movable contact member 17 ′ returns to its initial shape by its own elastic force, and the rear edge of the movable contact member 17 ′ contacts the inner surface of the cover member 40.
For this reason, the first modification can also exhibit the same effects as the above-described embodiment.

A reflective recess 35f 'is formed in the third group motor support bracket 35' of the second modification shown in FIG. The reflecting surface 35f1 ′ of the reflecting recess 35f ′ has the same shape as the reflecting recess 35f (the inclination angle with respect to the movable lens group optical axis O2 is the same as that of the reflecting surface 35f1), but the shape of the retracting surface 35f2 ′ is the reflecting recess 35f. Is different. That is, the retracting surface 35f2 ′ is configured by a first straight line portion 35f2a parallel to the movable lens group optical axis O2 and a second straight line portion 35f2b orthogonal to the movable lens group optical axis O2. However, the straight line connecting the intersection of the first linear portion 35f2a and the reflecting surface 35f1 ′ and the intersection of the second linear portion 35f2b and the upper surface of the main body constituting portion 35a is inclined at an angle α with respect to the movable lens group optical axis O2. ing. Although not shown, the second group motor support bracket of the second modification is vertically symmetrical with the third group motor support bracket 35 '.
The third group motor support bracket 35 ″ of the third modification shown in FIG. 22 is formed with a reflective recess 35f ″. The retracting surface 35f2 '' of the reflecting recess 35f '' is composed of a first straight part 35f2c parallel to the movable lens group optical axis O2 and a second straight part 35f2d inclined with respect to the movable lens group optical axis O2. . However, the intersection of the first straight portion 35f2c and the reflection surface 35f1 ′ (the inclination angle with respect to the movable lens group optical axis O2 is the same as that of the reflection surface 35f1), and the intersection of the second straight portion 35f2d and the upper surface of the main body constituting portion 35a Are inclined at an angle α with respect to the optical axis O2 of the movable lens group. Although not shown, the second group motor support bracket of the third modification is vertically symmetrical with the third group motor support bracket 35 ''.
The third group motor support bracket 35 ′ ″ of the fourth modification shown in FIG. 23 is formed with a reflective recess 35f ′ ″. The reflective recess 35f ′ ″ includes a reflective surface 35f1 ′ ″ and a retracting surface 35f2. The reflection surface 35f1 ′ ″ has a first reflection surface 35f1a ′ ″ and a second reflection surface 35f1b ′ ″, which are two planes that are both inclined with respect to the movable lens group optical axis O2 and have a tolerance. Yes. Although not shown, the second group motor support bracket of the fourth modification is vertically symmetrical with the third group motor support bracket 35 '''.
A third group motor support bracket 35 ″ ″ of the fifth modification shown in FIG. 24 is formed with a reflective recess 35f ″ ″. The reflective recess 35f ′ ″ includes a reflective surface 35f1 ″ ″ and a retracting surface 35f2. The reflective surface 35f1 ″ ″ is an arc surface. Although not shown, the second group motor support bracket of the fifth modification is vertically symmetrical with the third group motor support bracket 35 '''.
The inclination angles α, β of the second group motor support bracket and the third group motor support bracket 35 ′, 35 ″, 35 ′ ″, 35 ″ ″ of the second to fifth modifications configured as described above are as follows: Since the relationship between θ, θmax, and θmin is the same as that in the above embodiment, the same effect as that in the above embodiment can be exhibited.

Moreover, although the said embodiment and each modification have the 1st prism L11 and the 2nd prism L12 as a bending element, you may abbreviate | omit the 2nd prism L12. Further, at least one of the first prism L11 and the second prism L12 may be changed to a mirror that exhibits a similar function (function as a bending element).
The movable contact member 17 is formed of a thin metal plate (elastic material), and the rear edge portion of the movable contact member 17 is brought into contact with or separated from the inner surface of the cover member 40 using the elastic deformation force of the metal plate. May be.
Further, the light shielding frame 16 may be omitted from the bending imaging device 10. Also in this case, the subject luminous flux that passes through the third lens group G3 and then travels toward the periphery of the reflecting surface 32f1 and the reflecting surface 35f1 (or the reflecting surface of the second group motor support bracket and the third group motor support bracket in each modification). (A part of) is reflected by the reflecting surface 32f1 and the reflecting surface 35f1. Therefore, also in this case, the reflection surface 32f1 and the reflection surface 35f1 (or the reflection surfaces of the second group motor support bracket and the third group motor support bracket of each modification) exhibit the same function and effect as those provided with the light shielding frame 16. .
Further, the light shielding frame 16 and the tension spring 18 may be omitted from the bending imaging device 10.
The light shielding frames 16, 16 ′ and the third group frame 21 may be integrated by an urging unit different from the tension spring 18. Further, a lens support frame different from the third group frame 21 and the light shielding frames 16 and 16 'may be integrated via an urging means.
A stopper corresponding to the stopper 16h may be provided in a fixed state on the housing 13 side, and a guide hole corresponding to the guide hole 13j may be formed on the third group frame 21 side. Further, the guide hole may be a bottomed hole even when provided in either the housing 13 or the third group frame 21. Further, light shielding frame movement control means having a structure different from that of the guide hole 13j and the stopper 16h may be employed.

  Further, the second lens group G2, the third lens group G3, and the fourth lens group G4 are provided on the movable lens group optical axis O2, but the number of lens groups on the movable lens group optical axis O2 is two or less, or four. The present invention can also be applied to one or more types of imaging optical systems.

  Further, in the first lens group G1, a lens arranged on the pre-bending optical axis O1 in front of the entrance surface L11-a of the first prism L11, or a movable lens on the right side of the exit surface L11-b of the first prism L11. It is possible to vary the number of lenses arranged on the group optical axis O2.

  The imaging optical system of the bending imaging apparatus 10 of the illustrated embodiment is a zoom lens that performs a zooming operation by moving the second lens group G2 and the third lens group G3 along the optical axis O2 of the movable lens group. The present invention can also be applied to a bending imaging apparatus equipped with an imaging optical system that does not have a zoom function (for example, an imaging optical system that has only a focusing function). For example, the second lens group G2 and the third lens group G3 may not perform zooming movement, and the second lens group G2 or the third lens group G3 may perform only focusing movement.

  In addition, the incident surface L11-a of the first prism L11 in the illustrated embodiment is a horizontally long rectangle (rectangle), but the incident surface 11-a of the incident surface L11-a of the first prism L11 is square, trapezoidal, or other shape. The present invention can also be applied to a type of bending imaging device (optical system).

DESCRIPTION OF SYMBOLS 10 Bending imaging apparatus 11 Main body module 12 1st group block 13 Housing 13a Support recessed part 13b Bracket left side support protrusion 13c Retaining cover rear protrusion 13d FPC engaging protrusion 13e Retaining cover right engaging protrusion 13f Reducing cover Side locking projections 13g 13h Locking projections 13i for the first group block cover Locking engagement recesses 13j Guide holes (shading frame movement control means)
13k Motor holding recess 14 First group block cover 14a 14b Mounting locking hole 14c Lens exposure hole 16 16 'Shading frame 16a Central through hole 16b 16c Rod insertion hole 16d Positioning projection 16e 16f Mounting projection 16h Stopper (moving of shading frame) Control means)
16i 16j Positioning protrusion 16k Shading protrusion 17 17 'Movable contact member 17a Locking recess 17b Locking hole 17c Positioning recess 17d Rear edge 18 Tension spring (biasing means)
20 2nd group frame 20a Nut engagement recess 20b Through hole 21 3rd group frame (lens support frame)
21a 21a 'pressing part 21b through hole 22 23 rod 30 motor unit 31 second group motor (first motor) (motor) (driving means)
31a Motor body 31b Lead screw 32 2nd group motor support bracket (motor support bracket)
32a Main body component 32b Motor body support piece 32c Screw support piece 32d Circular support hole 32e Engagement hole 32f Reflective recess 32f1 Reflective surface 32f2 Retraction surface 33 Nut 33a Female screw hole 34 Group 3 motor (second motor) (motor) (Driving means)
34a Motor body 34b Lead screw 35 35 '35 "35""Third group motor support bracket (motor support bracket)
35a body component 35b motor body support piece 35c screw support piece 35d circular support hole 35e engagement hole 35f 35f '35f''35f''' 35f '''' reflective recess 35f1 35f1 '35f1''35f1'''35f1''''Reflective surface 35f1a''' First reflective surface 35f1b '''Second reflective surface 35f2 35f1' 35f2 '' Retraction surface 36 Nut 36a Female screw hole 37 Cushion material 38 Flexible printed circuit board 38a Mounting hole 40 Cover Member (housing)
40a body flat plate portion 40b first group block exposure hole 40c first engagement piece 40d circular engagement hole 40e rectangular engagement hole 40f second engagement piece 40g third engagement piece 40h square engagement hole IS imaging element L11 first Prism (bending element)
L11-a Incident surface L11-b Outgoing surface L11-c Reflecting surface L12 Second prism (bending element)
L12-a Incident surface L12-b Outgoing surface L12-c Reflective surface G1 First lens group (front lens group)
G2 Second lens group (movable lens group)
G3 Third lens group (movable lens group)
G4 Fourth lens group (fixed lens group)
O1 Optical axis before bending O2 Movable lens group optical axis O3 Image sensor optical axis

Claims (6)

A movable lens group movable along its own optical axis direction;
A bending element that guides the subject luminous flux to the movable lens group while bending the light beam;
An image sensor that images the subject luminous flux emitted from the movable lens group;
A motor comprising: a lead screw that drives the movable lens group by rotating parallel to the optical axis and around its own axis; and a motor body that rotates the lead screw;
A motor support bracket that supports the motor body and rotatably supports the lead screw;
With
A bending imaging apparatus, wherein a reflection recess for reflecting a part of the subject light beam emitted from the movable lens group is formed on a surface of the motor support bracket. The bending imaging apparatus according to claim 1,
A light shielding frame movable along the optical axis,
A bending imaging apparatus in which when the light shielding frame and the movable lens group move relative to each other in the optical axis direction, the reflection concave portion of the motor support bracket and the light shielding frame face each other in a direction perpendicular to the optical axis. The bending imaging apparatus according to claim 2, wherein
A bending imaging apparatus in which the reflective recess and the light shielding frame face each other in a direction orthogonal to the optical axis when the light shielding frame is in a stationary state. The bending imaging apparatus according to claim 2 or 3,
The movable lens group includes a first movable lens group and a second movable lens group that move independently of each other;
The motor includes a first motor and a second motor that drive the first movable lens group and the second movable lens group, respectively.
The motor support bracket includes a first motor support bracket and a second motor support bracket for supporting the first motor and the second motor, respectively.
A bending imaging apparatus in which the movable lens group and the light shielding frame are located between the first motor support bracket and the second motor support bracket. The bending imaging apparatus according to any one of claims 1 to 4,
A fixed lens group located on the optical axis and located on the opposite side of the bending element across the movable lens group;
When the distance between the fixed lens group and the movable lens group is maximized, a part of the subject luminous flux emitted from the movable lens group is directed toward the motor support bracket,
When the distance between the fixed lens group and the movable lens group is maximized, the position in the optical axis direction of the central point between the fixed lens group and the movable lens group coincides with the concave portion for reflection,
A part of the subject luminous flux emitted from the movable lens group having the largest distance from the fixed lens group is reflected to the imaging element side by the surface of the motor support bracket that does not form the reflection concave portion. When the reflected reflected light is used as a virtual reflected light,
The amount of reflected light that is reflected from the concave portion for reflection toward the image sensor side by a part of the subject light beam emitted from the movable lens group that has the largest distance from the fixed lens group is the light amount of the virtual reflected light beam. A bending imaging apparatus in which the shape of the concave portion for reflection is set so as to be less. The bending imaging apparatus according to any one of claims 1 to 5,
A bending imaging apparatus, wherein the reflecting recess includes a reflecting surface composed of two planes that reflect a part of the subject luminous flux emitted from the movable lens group and intersect each other.

Images