JP2007163749A - Lens unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens unit whose assembling process is simplified. <P>SOLUTION: A lens unit 1 is provided with a liquid lens 21 constituting a photographic optical system 20. In the liquid lens 21, transparent water 21_3 having an electrolyte added thereto and transparent oil 21_4 being an insulating liquid are stored between cover glasses 21_1 and 21_2 without mixing. Since an optical refractive index of the oil 21_4 is higher than that of the water 21_3, the oil 21_4 in the liquid lens 21 serves as a lens which is refracting light. The liquid lens 21 includes a first electrode 21_6 in contact with the water 21_3 and a second electrode 21_7 in contact with the oil 21_4, which are formed via an insulator 21_5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lens unit incorporated in an optical device.

Conventionally, a compact film camera that takes a photograph on a roll-like photographic film, a digital camera that captures subject light with an image sensor and generates an image signal, a camera mounted on a mobile phone, a video camera that shoots a video, etc. In such an optical device, by providing an AF mechanism, a camera shake correction mechanism, or the like on the front surface of the photographing lens constituting the lens unit incorporated in the optical device, the lens unit is provided with a new function. Yes. For example, a camera shake correction mechanism is realized by providing a prism for removing camera shake on the front surface of the photographing lens, and the moving speed of the lens group constituting the AF mechanism is determined according to whether there is camera shake. Thus, a technique has been proposed that can suppress a decrease in the response speed of the AF mechanism even when a camera shake correction mechanism is provided (see Patent Document 1).
JP-A-7-107372

  In the technique proposed in Patent Document 1 described above, a prism provided on the front surface of the photographing lens includes a coil provided on a holding frame that holds a glass member filled with liquid, and a magnet provided on a fixed portion. And an actuator composed of a yoke. With this actuator, camera shake is removed by controlling the angle of the prism by an amount corresponding to the angle corresponding to the size of camera shake. Here, in order to control the angle of the prism by an amount corresponding to the angle corresponding to the size of the camera shake, a current corresponding to the angle is supplied to the coil constituting the actuator and the electric current provided in the camera body. It is necessary to supply from the circuit board. For this purpose, the coil provided in the prism on the front surface of the photographing lens and the electric circuit board provided in the camera body are wired in a lens holder disposed between the prism and the camera body. It is necessary to connect by soldering. Therefore, there is a problem that the assembly process is complicated.

  In view of the above circumstances, an object of the present invention is to provide a lens unit with a simplified assembly process.

The lens unit of the present invention that achieves the above object provides:
A taking lens,
A lens holder for holding at least a part of the photographing lenses;
An action body provided with the lens holder and requiring electrical wiring;
The lens holder is an in-mold molded piece that acts as electrical wiring,
An elastic member acting as an electrical wiring between the contact piece and the working body is provided.

  In the lens unit of the present invention, the electrical connection between the working body provided in the lens holder that requires electrical wiring and the electric circuit board provided in the camera body or the like is electrically connected to the lens holder in-mold. This is performed by a contact piece that acts as a flexible wiring and an elastic member that acts as an electrical wiring. For this reason, the coil provided in the prism provided on the front surface of the photographing lens proposed in Patent Document 1 and the electric circuit board provided in the camera body are connected by soldering or the like with wiring arranged in the lens holder. The assembly process is simplified compared to the technique of connecting.

  Here, the elastic member is preferably a coil spring.

  It is also a preferred aspect that the elastic member is a leaf spring.

  When the elastic member is a coil spring or a leaf spring, the elastic member can be easily obtained at low cost.

  Furthermore, it is preferable that the action body is a focus actuator that drives an optical member for focus adjustment.

  It is also a preferred aspect that the action body is a camera shake correction actuator that drives an optical member for camera shake correction.

  When the acting body is a focus actuator or a camera shake correction actuator, a lens unit having an AF function or a camera shake correction function can be easily realized.

  According to the present invention, it is possible to provide a lens unit with a simplified assembly process.

  Embodiments of the present invention will be described below.

  FIG. 1 is an external perspective view of a camera in which the first embodiment of the lens unit of the present invention is incorporated.

  FIG. 1 (a) shows a view of a camera incorporating the first embodiment of the lens unit of the present invention as seen from the front upper side. Also, FIG. 1B shows a view of the camera shown in FIG.

  A camera 100 shown in FIG. 1 is a digital camera that includes a photographic optical system and generates image signals by capturing subject light incident through the photographic optical system with an imaging device.

  As shown in FIG. 1A, the camera 100 incorporates a lens unit 1 including a lens barrel 10 provided in the center of the camera body and a photographing optical system 20 built in the lens barrel 10. It is. In the camera 100, an image of a subject is guided through a photographing optical system 20 to a CCD solid-state image pickup device (hereinafter referred to as a CCD) that is an image pickup device provided in the camera 100.

  A finder 102, a photometric optical system 103, a distance measuring unit 104, and a light emitting unit 105 are disposed above the lens unit 1 of the camera 100 shown in FIG. The distance measuring unit 104 includes AF light receiving windows 104a and 104b disposed at positions separated from each other by a predetermined distance, and reflected light that is natural scattered light (sunlight or the like) from the subject is received by the AF light receiving windows 104a and 104b. The subject distance is measured by using a so-called triangulation principle.

  Further, as shown in FIG. 1B, an operation switch group 111 for performing various operations when the user uses the camera 100 is provided on the back surface and the upper surface of the camera 100.

  In addition to the power switch 111a for operating the camera 100, the operation switch group 111 includes a shutter button 111b, a cross key 111c, a menu / OK key 111d, a cancel key 111e, a mode lever 111f, and the like. The mode lever 111f in the operation switch group 111 switches between the reproduction mode and the shooting mode, and further switches between the moving image mode and the still image mode in the shooting mode. When the mode lever 111f is switched to the shooting mode, a through image is displayed, and the subject is photographed when the shutter button 111b is pressed while viewing the through image. This is performed on the LCD panel 150.

  Also, by operating the menu / OK key 111d and the cross key 111c, the setup menu is switched to set the date and time, whether or not to display an image, etc., or the shooting mode to switch to manual, auto, landscape, portrait , A night view, etc. can be selected, or the self-timer, continuous shooting, etc. can be selected by switching to the shooting menu.

  FIG. 2 is a block diagram showing the configuration of the camera shown in FIG.

  The camera 100 shown in FIG. 2 includes a liquid lens 21 (corresponding to an example of an action body according to the present invention), a photographing lens 22, an iris 23, and a shutter 24, which will be described later, constituting the photographing optical system 20. . The photographing lens 22 is composed of a plurality of lenses.

  The camera 100 also includes an AF control unit 25 that changes the lens shape of the liquid lens 21, an iris driving unit 26 that drives the iris 23, and a shutter driving unit 27 that drives the shutter 24.

  Here, the liquid lens 21 is a lens for realizing the TTLAF function. The TTLAF function generally means that the CPU detects the contrast of the image signal obtained by the CCD while moving the lens in the direction along the optical axis, and the lens position where the contrast peak is obtained is the focus position. The lens is adjusted to the focus position. By this TTLAF function, it is possible to automatically focus on a subject having a contrast peak (that is, the closest subject closest to the subject). In the first embodiment, instead of moving such a lens, the AF control unit 25 changes the lens shape of the liquid lens 21 to focus on the subject. The configuration of the liquid lens 21 will be described later.

  In the camera 100, all processes are controlled by the main CPU 110, and operation signals from the operation switch group 111 shown in FIG. 1B are supplied to the input section of the main CPU 110, respectively. The main CPU 110 is connected to the EEPROM 110a, and a program necessary for operating as the camera 100 is written in the EEPROM 110a. When the power switch 111a (see FIG. 1) of the camera 100 having such a configuration is turned on, the operation of the entire camera 100 is controlled by the main CPU 110 according to the procedure of the program in the EEPROM 110a.

  Specifically, when the power switch 111a in the operation switch group 111 is turned on, the main CPU 110 detects that the power switch 111a is turned on, and power is supplied from the power supply 130 to each block such as the main CPU 110 and the driving CPU 120. Is supplied. Here, when the mode lever 111f in the operation switch group 111 is switched to the photographing side, the subject image formed on the CCD 112 via the photographing optical system 20 is set as an image signal at predetermined intervals. The thinned image is output and a subject image based on the output image signal is displayed on the LCD panel 150. A timing signal is supplied to the CCD 112 from a clock generator (hereinafter referred to as CG) 153, and an image signal is thinned out and output at predetermined intervals by the timing signal. The CG 153 outputs a timing signal based on an instruction from the main CPU 110, and the timing signal is sent to the A / D unit 113 and the WB (white balance) adjustment unit / γ processing unit 114 in addition to the CCD 112. Are also supplied. Therefore, the CCD 112, the A / D unit 113, and the WB adjustment unit / γ processing unit 114 perform processing of image signals in order in synchronization with the timing signal.

  As described above, the A / D unit 113 converts the digital signal into a digital image signal in synchronization with the timing signal output from the CG 153 in response to an instruction from the main CPU 110, and the WB adjustment unit / γ processing unit 114 performs white balance adjustment and γ When correction is performed at predetermined intervals, it is necessary to appropriately adjust the flow of the image signals. Therefore, a buffer memory 115 is provided in the subsequent stage, and the buffer memory 115 sets the intervals at predetermined intervals. The timing at which the image signal is transferred to the YC processing unit 116 is adjusted. From the buffer memory 115, the image signal stored at the old time is transferred to the YC processing unit 116 first. The image signal transferred to the YC processing unit 116 is converted from an RGB signal to a YC signal by the YC processing unit 116, and then supplied to the YC → RGB conversion unit 151 via the bus 121. The YC → RGB conversion unit 151 converts the YC signal into an RGB signal again, and the converted RGB signal is supplied to the LCD panel 150 via the driver 152. As a result, an image of the subject image is displayed on the LCD panel 150. The CCD 112, the A / D unit 113, the WB adjustment unit / γ correction unit 114 operate in synchronization with the timing signal output from the CG 153 described above, and the image signal generated by the CCD 112 is processed at predetermined intervals. Therefore, the subject in the direction in which the photographing lens 22 is directed is always displayed on the LCD panel 150 as a subject image. When the shutter button 111b is pressed at a photo opportunity while visually recognizing the subject image being displayed, all image signals imaged on the CCD 112 are passed after a predetermined time from the pressing timing of the shutter button 111b. Are output as RGB signals. The RGB signal is converted into a YC signal by the YC processing unit 116, and the YC signal is further compressed by the compression / decompression unit 117. The compressed image signal is transferred to the memory card 119 via the I / F (interface) 118. To be recorded. In the compression / decompression unit 117, the still image is compressed by a compression method compliant with the JPEG standard, and an image signal is recorded on the memory card 119. Compression information, shooting information, etc. are written in the header portion of the file consisting of image signals. When the mode lever 111f of the camera 100 is switched to the playback side, the header of the file is first read from the memory card 119. After the compressed image signal in the file is expanded based on the compression information in the header and restored based on the image signal, the subject image based on the image signal is displayed on the LCD panel 150.

  In addition to the main CPU 110, the camera 100 is provided with a driving CPU 120, and the driving optical system 20 and the light emitting unit 105 are controlled by the driving CPU 120.

  3 is a partially cutaway view of the lens unit incorporated in the camera shown in FIG. 1, and FIG. 4 is a cross-sectional view of the lens unit shown in FIG.

  The lens unit 1 shown in FIG. 3 includes a lens holder 11 constituting the lens barrel 10 and a ring member 12 for holding the lens holder 11. As shown in FIG. 4, the ring member 12 is fixed to the lens holder 11 with screws 13. Here, the lens holder 11 holds the photographing lens 22, and in this lens holder 11, the first contact piece 14_1 and the second contact piece 14_2 that act as electrical wiring are in-mold molded. Yes. The structures of the first and second contact pieces 14_1 and 14_2 will be described later.

  Further, the lens unit 1 is provided with a liquid lens 21 constituting the photographing optical system 20. The liquid lens 21 is an action body that is provided on the front surface of the photographing lens 22 held by the lens holder 11 and requires electrical wiring. In the liquid lens 21, transparent water 21_3 to which an electrolyte is added and transparent oil 21_4 that is an insulating liquid are accommodated between the cover glasses 21_1 and 21_2 without being mixed with each other. Since the oil 21_4 has a higher refractive index of light than the water 21_3, in the liquid lens 21, the oil 21_4 serves as a lens that refracts light. Further, the liquid lens 21 includes a first electrode 21_6 that is in contact with the water 21_3 and a second electrode 21_7 that is in contact with the oil 21_4, which are formed with the insulator 21_5 interposed therebetween.

  Furthermore, in the lens unit 1, the electrical wiring between the first contact piece 14_1 and the second contact piece 14_2 of the lens holder 11 and the first electrode 21_6 and the second electrode 21_7 of the liquid lens 21 is provided. Are provided with a first coil spring 15_1 and a second coil spring 15_2. Compression springs are employed as the first and second coil springs 15_1 and 15_2. In addition, as shown in FIG. 4, an infrared cut filter (IR cut filter) 16 that cuts infrared rays is disposed in the lens unit 1.

  Here, the electric circuit board 101 provided in the camera body is attached to the lens unit 1. The above-described CCD 112 is mounted on the electric circuit board 101. In addition, a voltage application terminal and a ground terminal (not shown) provided on the electric circuit board 101 and the first and second contact pieces 14_1 and 14_2 are solder-connected by a solder 17. By doing so, a dustproof structure is realized at the solder connection portion between the electric circuit board 101 and the lens unit 1.

  FIG. 5 is a diagram illustrating the back surface of the lens unit.

  On the back surface of the lens unit 1 shown in FIG. 5, the solder connection portion 11a in which the tip end portion of the first contact piece 14_1 is exposed and the solder connection portion 11b in which the tip end portion of the second contact piece 14_2 is exposed. Is provided. In these solder connection portions 11a and 11b, the voltage application terminal and the ground terminal provided on the electric circuit board 101 are soldered to the front end portions of the first and second contact pieces 14_1 and 14_2 with the solder 17, thereby the lens. The unit 1 and the electric circuit board 101 are in close contact with each other to realize a dustproof structure.

  Here, the first electrode 21_6 of the liquid lens 21 passes through the first and second contact pieces 14_1 and 14_2 and the first and first coil springs 15_1 and 15_2 from the voltage application terminal and the ground terminal of the electric circuit board 101. When a positive voltage or a negative voltage is applied to the second electrode 21_7, the shape of the boundary surface A between the water 21_3 and the oil 21_4 when viewed from the oil 21_4 becomes convex, and thus the liquid lens 21 is formed as a convex lens. Function.

  In addition, in a state where no voltage is applied between the first electrode 21_6 and the second electrode 21_7, the shape of the boundary surface A between the water 21_3 and the oil 21_4 when viewed from the oil 21_4 is concave, The liquid lens 21 functions as a concave lens.

  Further, by adjusting the voltage applied to the first electrode 21_6 and the second electrode 21_7, the shape of the boundary surface A between the water 21_3 and the oil 21_4 can be changed little by little. Thus, according to the liquid lens 21, the focus function can be realized by changing the shape of the boundary surface A between the water 21_3 and the oil 21_4 without providing a mechanism for moving the lens.

  FIG. 6 is a view showing first and second contact pieces in-molded on a lens holder constituting the lens unit shown in FIGS. 3, 4 and 5.

  FIG. 6 shows a lens holder 11 constituting the lens unit 1, and a first contact piece 14_1 including a circumferential portion 14_1a and a rectilinear portion 14_1b is in-mold molded in the lens holder 11. . The lens holder 11 is also in-mold molded with a second contact piece 14_2 including a circumferential portion 14_2a and a rectilinear portion 14_2b.

  FIG. 7 is a plan view, a front view, and a side view of the lens unit including the first and second contact pieces.

  FIGS. 7A, 7B, and 7C are a plan view, a front view, and a side view of the lens unit 1 including the first and second contact pieces 14_1 and 14_2, respectively. Has been. As shown in FIGS. 7A, 7B, and 7C, the lens unit 1 includes a photographic lens 22 and the liquid lens 21 provided on the front surface of the photographic lens 22, The lens holder 11 includes first and second contact pieces 14_1 and 14_2 formed in-mold.

  FIG. 8 is a perspective view after the primary molding in which the first and second contact pieces of the lens holder are in-mold molded, and FIG. 9 is the in-mold molding of the first and second contact pieces of the lens holder. It is the side view and front view after the primary molding performed.

  8 and 9, the lens holder 11 after the primary molding is further subjected to secondary molding, and the final lens holder 11 as shown by the hatched portion in FIG. 3 described above. It becomes the shape of.

  As shown in the perspective view of FIG. 8, the side view of FIGS. 9A and 9B, and the front view of the lens holder 11 after the primary molding, the lens holder 11 includes a circumferential portion 14_1a and a rectilinear portion 14_1b. One contact piece 14_1 and a second contact piece 14_2 composed of a circumferential portion 14_2a and a rectilinear portion 14_2b are molded in-mold.

  FIG. 10 is a perspective view of the first contact piece, and FIG. 11 is a perspective view of the second contact piece.

  As shown in FIG. 10, the first contact piece 14_1 is integrally formed with one circumferential portion 14_1a and three rectilinear portions 14_1b. Further, as shown in FIG. 11, the second contact piece 14_2 is integrally formed with one circumferential portion 14_2a and three rectilinear portions 14_2b.

  FIG. 12 is a plan view, a front view, and a side view of the first contact piece.

  As shown in FIG. 12A, the first contact piece 14_1 has the notches 14_1a1 at both ends of the circumferential portion 14_1a where the rectilinear portions 14_1b are formed. Further, as shown in FIGS. 12B and 12C, the first contact piece 14_1 has one rectilinear portion 14_1b out of the three rectilinear portions 14_1b longer than the other two rectilinear portions 14_1b. It has a shape that is long in the direction.

  As described above, the lens unit 1 of the first embodiment incorporated in the camera 100 includes the liquid lens 21 that is provided on the front surface of the photographing lens 22 and requires electrical wiring, and the electric circuit board that is provided on the camera body. The first and second contact pieces 14 </ b> _ <b> 1 and 14 </ b> _ <b> 2 that act as electrical wiring in-molded on the lens holder 11 and the first and second electrical connections that act as electrical wiring. This is performed by the coil springs 15_1 and 15_2. For this reason, the coil provided in the prism provided on the front surface of the photographing lens proposed in Patent Document 1 and the electric circuit board provided in the camera body are connected by soldering or the like with wiring arranged in the lens holder. The assembly process is simplified compared to the technique of connecting.

  FIG. 13 is a plan view, a front view, and a side view of a first contact piece different from the first contact piece shown in FIG.

  As shown in FIG. 13A, the first contact piece 14_11 has three cutout portions 14_11a1, 14_11a2, and 14_11a3 at both ends of the circumferential portion 14_11a where the rectilinear portions 14_11b are formed. As described above, the first contact piece 14_11 may be reduced in weight by providing the first contact piece 14_11 with the three cutout portions 14_11a1, 14_11a2, and 14_11a3.

  FIG. 14 is a cross-sectional view of a second embodiment of the lens unit of the present invention.

  In addition, the same code | symbol is attached | subjected to the same component as the component of the lens unit 1 shown in FIG. 4, and a different point is demonstrated.

  As shown in FIG. 14A, the lens unit 2 includes a focus lens 2 </ b> _ <b> 1 for adjusting the focus and a focus actuator 2 </ b> _ 2, which is another example of the operating body according to the present invention, on the front surface of the photographing lens 22. It has been.

  The focus lens 2_1 is composed of a first lens 2_11 and a second lens 2_12. The first lens 2_11 is attached to the moving member 2_3, and the second lens 2_12 is attached to the lens holder 11.

  On the other hand, the focus actuator 2_2 includes a yoke member 2_21 attached to the moving member 2_3, a voice coil member 2_22 attached to the outer peripheral surface of the yoke member 2_21, and a magnet 2_23 constituting a part of the outer surface of the lens unit 2. Has been.

  The lens unit 2 also includes first and second coil springs 15_1 and 15_2 that are compression springs. These first and second coil springs 15_1 and 15_2 are urged leftward. The lens unit 2 is in a state shown in FIG. 14A when the voice coil member 2_22 is energized as described below.

  The lens unit 2 is in an initial state shown in FIG. Here, the voice coil member is connected to the voltage application terminal and ground terminal (not shown) of the electric circuit board 101 through the first and second contact pieces 14_1 and 14_2 and the first and second coil springs 15_1 and 15_2. A voltage is applied to 2_22. Then, a current flows through the voice coil member 2_22, and a predetermined propulsion moment is obtained by the electromagnetic force generated thereby and the electromagnetic field formed by the yoke member 2_21 and the magnet 2_23, and this moment constitutes the focus actuator 2_2. The yoke member 2_21, the voice coil member 2_22, and the lens 2_11 constituting the focus lens 2_1 move to the right as shown in FIG. In this way, the focusing position of the focus lens 2_1 is varied and focusing is performed.

  FIG. 15 is a sectional view of a third embodiment of the lens unit of the present invention.

  The lens unit 3 shown in FIG. 15 is different from the lens unit 2 shown in FIG. 14 in that the focus adjustment focus lens 2_1 is replaced with the focus lens 3_1. As shown in FIG. 15A, the focus lens 3_1 is composed of a first lens 3_11 and a second lens 3_12. The first lens 3_11 is fixed to the ring member 3_3. The first and second coil springs 15_1 and 15_2 are compression springs, and the first and second coil springs 15_1 and 15_2 are urged leftward.

  Here, the voice coil member 2_22 from the voltage application terminal and ground terminal (not shown) of the electric circuit board 101 via the first and second contact pieces 14_1 and 14_2 and the first and first coil springs 15_1 and 15_2. When a voltage is applied to the current, a current flows through the voice coil member 2_22, and a predetermined propulsion moment is obtained by the electromagnetic force generated thereby and the electromagnetic field formed by the yoke member 2_21 and the magnet 2_23. The second lens 3_12 that forms the focus lens 3_1 together with the focus actuator 2_2 moves to the right as shown in FIG. In this way, the focus position of the focus lens 3_1 may be varied.

  In the first to third embodiments described above, by using the compression spring, it is possible to perform electrical connection with a simple structure at both ends of the coil spring without performing soldering.

  In the second and third embodiments, the coil spring that urges the lens in a predetermined direction is also used as an electrical connection, so that wiring materials such as lead wires and flexible boards can be omitted, and the number of parts can be reduced. When the lead wire is pulled out from the voice coil member and directly connected to the circuit board by soldering, the lead wire is thin and there is a risk of disconnection. However, the use of a coil spring eliminates the possibility of disconnection.

  FIG. 16 is a block diagram showing a configuration of a camera in which the fourth embodiment of the lens unit of the present invention is incorporated.

  The external perspective view of the camera 200 shown in FIG. 16 is the same as the external perspective view of the camera 100 shown in FIG.

  The camera 200 shown in FIG. 16 differs from the camera 100 shown in FIG. 1 in that a camera shake detection unit 201 is added and that the AF control unit 25 is replaced with a camera shake correction unit 202. .

  The camera shake detection unit 201 detects a camera shake and outputs a camera shake signal corresponding to the magnitude of the camera shake.

  The camera shake correction unit 202 performs camera shake correction by changing the lens shape of the liquid lens 21 in accordance with the camera shake detection result of the camera shake detection unit 201. Specifically, a voltage corresponding to the detection result of the shake detected by the camera shake detection unit 201 is applied to the liquid lens 21 arranged on the optical path of the incident subject light by the camera shake correction unit 202, and the applied voltage Accordingly, the liquid lens 21 deflects the optical path to correct blurring of the subject image on the imaging surface of the CCD 112. Instead of the liquid lens 21, a camera shake correction actuator that drives a camera shake correcting optical member may be provided.

  In the above-described embodiment, the example of the coil spring has been described as the elastic member according to the present invention. However, the present invention is not limited thereto, and the elastic member according to the present invention may be a leaf spring.

  Further, in the present embodiment, each embodiment of the lens unit of the present invention is applied to a digital camera that includes a photographing optical system and captures subject light incident via the photographing optical system with an image pickup device and generates an image signal. This is not limited to this example. For example, a compact film camera that takes a photograph on a roll-shaped photographic film, a camera mounted on a mobile phone, and the film is sent to the outside of the camera and developed. The present invention can be applied to either an instant camera or a video camera that takes a moving image.

1 is an external perspective view of a camera in which a first embodiment of a lens unit of the present invention is incorporated. It is a block diagram which shows the structure of the camera shown in FIG. It is the figure which notched and showed a part of lens unit incorporated in the camera shown in FIG. It is sectional drawing of the lens unit shown in FIG. It is a figure which shows the back surface of a lens unit. It is a figure which shows the 1st, 2nd contact piece in-mold-molded in the lens holder which comprises the lens unit shown in FIG.3, FIG.4, FIG.5. It is the top view including the 1st, 2nd contact piece of a lens unit, a front view, and a side view. It is a perspective view after the primary molding in which the 1st and 2nd contact piece of the lens holder was in-mold molded. It is the side view and front view after the primary molding by which the 1st, 2nd contact piece of the lens holder was in-mold molded. It is a perspective view of the 1st contact piece. It is a perspective view of the 2nd contact piece. It is the top view, front view, and side view of a 1st contact piece. It is the top view, front view, and side view of a 1st contact piece different from the 1st contact piece shown in FIG. It is sectional drawing of 2nd Embodiment of the lens unit of this invention. It is sectional drawing of 3rd Embodiment of the lens unit of this invention. It is a block diagram which shows the structure of the camera in which 4th Embodiment of the lens unit of this invention was integrated.

Explanation of symbols

1, 2, 3 Lens unit 2_1, 3_1 Focus lens 2_2 Focus actuator 2_3 Moving member 2_11, 3_11 First lens 2_12, 3_12 Second lens 2_21 Yoke member 2_22 Voice coil member 2_23 Magnet 3_3, 12 Ring member 10 Lens barrel DESCRIPTION OF SYMBOLS 11 Lens holder 11a, 11b Solder connection part 13 Screw 14_1, 14_11 1st contact piece 14_1a, 14_2a, 14_11a Circumferential part 14_1b, 14_2b, 14_11b Rectilinear part 14_1a1, 14_11a1, 14_11a2, 14_11a3 Notch part 2_2 piece 14_11 First coil spring 15_2 Second coil spring 16 Infrared cut filter (IR cut filter)
17 Solder 20 Imaging optical system 21 Liquid lens 21_1, 21_2 Cover glass 21_3 Water 21_4 Oil 21_5 Insulator 21_6 First electrode 21_7 Second electrode 22 Shooting lens 23 Iris 24 Shutter 25 AF control unit 26 Iris driving unit 27 Shutter driving unit DESCRIPTION OF SYMBOLS 100,200 Camera 101 Electric circuit board 102 Finder 103 Photometry optical system 104 Distance measuring part 104a, 104b AF light reception window 105 Light emission unit 110 Main CPU
110a EEPROM
111 Operation switch group 111a Power switch 111b Shutter button 111c Four-way key 111d Menu / OK key 111e Cancel key 111f Mode lever 112 CCD
113 A / D unit 114 WB adjustment unit / γ processing unit 115 buffer memory 116 YC processing unit 117 compression / decompression unit 118 I / F
119 Memory card 120 CPU for driving
121 Bus 130 Power Supply 150 LCD Panel 151 YC → RGB Conversion Unit 152 Driver 153 Clock Generator 201 Camera Shake Detection Unit 202 Camera Shake Correction Unit

Claims (5)

A taking lens,
A lens holder for holding at least a part of the photographing lens;
An action body provided with the lens holder and requiring electrical wiring;
The lens holder is an in-mold molded piece that acts as an electrical wiring,
A lens unit comprising an elastic member that acts as an electrical wiring between the contact piece and the working body.   The lens unit according to claim 1, wherein the elastic member is a coil spring.   The lens unit according to claim 1, wherein the elastic member is a leaf spring.   The lens unit according to claim 1, wherein the acting body is a focus actuator that drives an optical member for focus adjustment.   The lens unit according to claim 1, wherein the action body is a camera shake correction actuator that drives an optical member for camera shake correction.

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