KR101448535B1 - Photographing apparatus - Google Patents

Abstract

The present invention relates to an image pickup apparatus having a filter holder accommodating section, which comprises a front lens section arranged along a first optical axis direction, and an image pickup section including a reflection member for deflecting image light from the front lens section in a second optical axis direction An image pickup apparatus comprising: an image pickup element for receiving image light from the front lens unit to form an image; At least one slot-shaped entrance is formed on one surface of the case, and a case part for housing the imaging device including the front lens part; And a filter holder accommodating portion which is disposed between the case portion and the front lens portion and accommodates a filter holder having a filter mounted thereon through the inlet.

Description

[0001]

The present invention relates to an imaging device, and more particularly, to an imaging device capable of storing a filter holder between a cover portion of a imaging device and a front lens portion.

2. Description of the Related Art [0002] An image pickup apparatus is an apparatus for picking up an image of a subject. Recently, image pickup apparatuses such as digital still cameras and digital video cameras have been widely used.

Various types of filters can be used for the imaging device. The filter is a device that changes the response of light and color to the imaging device according to the intention of the photographer. That is, the filter selectively absorbs or transmits the image light of the subject, and performs a function of creating an image desired by the photographer.

On the other hand, when a filter is coupled to an image pickup apparatus having a lens-barrel-type lens barrel protruding to the outside of the main body of the image pickup apparatus, a screw is generally formed at the edge of the inner periphery of the filter, Screws were formed on the outer periphery of the frame, and the filter was rotated and coupled to the lens frame by screwing.

Further, when a filter is coupled to an image pickup apparatus having a lens portion formed inside a main body of the image pickup apparatus and having a bendable bore through which the path of the image light is refracted, the filter is generally coupled to the outside of the body of the image pickup apparatus housing the lens portion Separate filter mounting means were used.

However, since such a conventional filter must be mounted on the image capturing device by screw coupling or a separate coupling means must be fastened to the main body, there is a problem that the mounting time is long and the volume of the image capturing device becomes large,

An object of the present invention is to provide an image pickup apparatus capable of accommodating a filter holder between a cover portion and a front lens portion of an image pickup apparatus to solve the above problems and other problems.

There is provided an image pickup apparatus including a front lens unit disposed along a first optical axis direction and a reflective member deflecting image light from the front lens unit in a second optical axis direction, An image pickup element for receiving and imaging; At least one slot-shaped entrance is formed on one surface of the case, and a case part for housing the imaging device including the front lens part; And a filter holder accommodating portion which is disposed between the case portion and the front lens portion and accommodates a filter holder having a filter mounted thereon through the inlet.

According to another aspect of the present invention, the image pickup device may be a CCD device.

According to another aspect of the present invention, the inlet may be formed on a side surface of the case portion.

According to another aspect of the present invention, the inlet may further include a lid capable of opening and closing the filter holder retention part.

According to still another aspect of the present invention, the filter holder can be detached from the filter holder storage part completely.

According to another aspect of the present invention, the filter holder may be coupled to an end of the filter holder receiving part when the filter holder is detached.

According to another aspect of the present invention, the filter holder may include a seating portion on which the filter is seated, a groove portion for extracting the filter from the seating portion, and a protrusion for guiding the filter holder.

According to another aspect of the present invention, the seat portion may have a shape corresponding to the shape of the filter.

According to another aspect of the present invention, an opening corresponding to the shape of the filter may be formed at the center of the seat portion.

According to another aspect of the present invention, a window through which image light reflected from a subject can pass can be formed on the front surface of the case part.

According to the image pickup apparatus of the present embodiment, since the method of attaching and detaching the filter is simple, it is possible to shorten the preparation time for image pickup and reduce the volume because the filter is mounted between the cover portion and the front lens portion, It is possible to protect the filter from the contamination of the foreign material to a maximum extent.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view showing a configuration in which an optical module according to an embodiment of the present invention is disposed in an imaging device, Fig. 2 is a schematic sectional view taken along a line II-II in Fig. 1, 3 and 4 are views showing a state in which the filter holder is housed in the image pickup apparatus shown in Fig. 1, Fig. 5 is a perspective view showing the relationship between the filter and the filter holder according to the embodiment of the present invention, 6 is a view showing a state in which a lid is provided in the image pickup apparatus according to the embodiment of the present invention.

As shown in FIG. 1, an image pickup apparatus according to an embodiment of the present invention includes an optical module 100 and a main body 200.

The subject is disposed in front of the image capturing apparatus. The optical module 100 captures an image of a subject and inputs the image light to the image capturing device 170 inside.

The optical module 100 includes a front lens unit 110, a reflective member 120, an intermediate lens unit 130, a focus lens unit 140, and a focus lens unit 140. The optical lens unit 100 includes a front lens unit 110, A shutter and diaphragm assembly 150, a lens barrel frame 160, and an image pickup element 170. [

The front lens unit 110 is composed of a single lens and is disposed along the first optical axis direction L1 of the image light.

A reflective member 120 is disposed behind the front lens unit 110 to refract the sensed image light and to introduce the sensed image light into the intermediate lens unit 130 arranged in the second optical axis direction L2.

The reflective member 120 is formed of a prism or a reflective mirror, and reflects the incident light by changing the angle of the incident image light.

The intermediate lens unit 130 is disposed in the second optical axis direction L2 and is composed of a plurality of lens groups.

In the present embodiment, the intermediate lens unit 130 is fixed to the barrel frame 160 so that zooming can not be performed. However, the present invention is not limited thereto. That is, the intermediate lens part 130 may be configured to perform a zooming operation, in which case the intermediate lens part 130 is configured to move along the barrel frame 160 in the second optical axis direction L2, A driving device such as a motor capable of moving the intermediate lens part 130 is disposed.

The focus lens unit 140 has a function of performing auto-focusing. To this end, the focus lens unit 140 includes a focus lens 141 and a focus lens driving device 142 disposed at the outer periphery thereof. Here, the focus lens driving device 142 performs the function of automatic focus adjustment while moving the focus lens 141 in the second optical axis direction L2.

Shutter and diaphragm assembly 150 performs shutter action and exposure dose adjustment.

According to the present embodiment, the shutter and diaphragm assembly 150 are disposed behind the focus lens unit 140 with respect to the second optical axis direction L2, but the present invention is not limited thereto. That is, the shutter and diaphragm assembly 150 may be disposed in front of the focus lens unit 140.

The front lens unit 110, the reflective member 120, the intermediate lens unit 130, the focus lens unit 140, and the shutter and diaphragm assembly 150 are mounted on the lens barrel frame 160, 160 function as a lens barrel of the optical module 100. As shown in FIG.

The image pickup element 170 is disposed at a position where image light passing through the front lens unit 110 is imaged into an image, and functions to convert an image that has been formed into an electrical signal.

The image pickup element 170 uses a charge coupled device (CCD) element as the photoelectric conversion element, but the present invention is not limited thereto. That is, CMOS (complementary metal oxide semiconductor) may be used as the image pickup device according to the present invention, or other image sensors may be used.

The main body 200 includes a case 210, a filter holder housing 220, a control unit (not shown), a shutter switch 230, a flash 240, a auxiliary light unit 250, a display unit 260, .

The case 210 has a slim structure in which the width of the front surface 211 is larger than the width of the side surface 212 and accommodates the imaging device including the optical module 100.

On one side of the front surface 211 of the case part, a window 213 is opened to a predetermined size so that the image light reflected from the subject can be incident on the front lens unit 110.

The front window 213 of the case part may further include a first lid part 214 for preventing foreign matter from entering the interior of the main body 200 of the imaging device. When the imaging device is not used, the first lid portion 214 is maintained in the closed state, and can be opened automatically or manually only when the subject is photographed.

1 and 2 show a state in which the first lid part 214 is opened in the front window 213 of the case part. However, in the case of Figs. 3 and 4, the first lid part 214 And the filter holder 400 is mounted in a closed state.

The first lid part 214 according to the present invention is not limited to the one that can be repeatedly closed and opened. For example, by disposing a transparent protective film having a high transmittance in the front window 213 of the case part, it is possible to pass the image light incident on the front lens unit 110 without closing the main body 200 of the image pickup apparatus without lowering the transmittance to be.

On the other hand, an inlet 215 is formed on one side 212 of the case part 210.

The filter holder 400 is removably attachable to the filter holder receiving portion 220 through the inlet 215. The filter holder 400 has an elongated slot shape.

According to the present embodiment, the inlet 215 is formed on one side 212 of the case part 210, but the present invention is not limited thereto. That is, the inlet according to the present invention may be formed on the bottom surface or the upper surface of the case portion.

According to the present embodiment, a single inlet 213 is formed in the case 210, but the present invention is not limited thereto. That is, according to the present invention, a plurality of inlets may be formed in the case part. When a plurality of inlets are formed, a plurality of filter portions may be respectively fitted to the respective inlets.

Meanwhile, as shown in FIG. 5, the second lid 216 may be formed on the inlet 215.

Since the inside and the outside of the imaging device are penetrated through the inlet 215 which is the entrance of the filter holder accommodating portion 220, foreign objects can enter the inside of the imaging device. Therefore, by forming the second lid portion 216 in the entrance 215, contamination of the imaging device can be prevented.

In this embodiment, the second lid 216 is shown as being hinged to one side of the inlet 215 to open and close, but the present invention is not limited to this and the second lid of various structures and shapes may be used Of course.

A filter holder accommodating portion 220 is formed in the space between the front window 213 and the front lens portion 110 of the case 210 to accommodate the filter holder 400 having the filter 300 mounted thereon.

An opening 221 is formed at the center of the storage part 220 of the filter holder so that image light passing through the filter 300 can pass through.

Here, the filter holder 400 can be used completely separated from the filter holder accommodating portion 220. 3, the user mounts the filter 300 to be used in the filter holder 400 completely separated from the main body 200, and then inserts the filter holder 400 into the filter holder accommodating portion 220 .

Further, the filter holder 400 can be used as a part of the main body 200. 4, the user mounts the filter 300 on the filter holder 400, which is not separated from the filter holder housing 220, that is, a portion of the main body 200, Can be inserted into the filter holder accommodating portion (220).

In the above-described case, although not shown in the drawings, the filter holder 400 may be further provided with a guide portion so that the filter holder 400 is slidable and detachable.

Referring to Fig. 6, the filter and the filter holder used in this embodiment will be described in detail.

As the type of the filter 300, an ultraviolet filter, a neutral density filter, a polarizing light filter, a flourescent filter, a close-up filter, or the like can be used have.

Here, the UV filter is a filter for blocking the ultraviolet rays when the subject is blurred due to ultraviolet rays, and the ND filter is a filter for reducing the transmission amount by the same degree for each wavelength within a specific wavelength range so as not to affect the color balance. The filter is a polarizing filter that adjusts the reflected light. It is a filter for eliminating the reflection of the reflector on the nonmetal surface. The FL filter is a filter for correcting an image captured under a fluorescent lamp, and a close-up filter When you use a filter.

In this embodiment, the shape of the filter 300 is circular. However, the present invention is not limited to this, and it is needless to say that various shapes of filters may be used.

The filter holder 400 has a thin plate shape so as to be detachable to the filter holder accommodating portion 220 and includes a base 410, a seating portion 420, a groove 430 and a protrusion 440.

The base 410 has a rectangular plate shape and the user can insert the filter holder 400 into the filter holder receiving portion 220 by holding the base 410 by hand and pushing the filter holder 400 into the inlet 215.

A seating part 420 is formed at the center of the filter holder 400 so as to have a step with the surface of the base 410 so that the filter 300 can be seated. An opening 421 corresponding to the shape of the filter 300 is formed at the center of the seating part 420 so that image light passing through the filter 300 can pass therethrough.

Since the circular filter 300 is used in this embodiment, the shape of the opening 421 of the filter holder 400 corresponding thereto is also circular. However, if the shape of the filter is changed, the shape of the opening of the filter holder Of course.

Two grooves 430 are formed on both sides of the seating part 420 and are used when the filter 300 seated on the base 410 is separated. That is, when the user desires to separate the filter 300 from the filter holder 400, two fingers are inserted into the groove 430 formed in the seating part 420 to hold the filter 300 and hold the filter holder 400, .

Meanwhile, although two grooves 430 are formed in the filter holder 400 in the present embodiment, the present invention is not limited thereto.

At one end of the filter holder 400 is formed a protruding portion 440 that can be used when separating or extracting the filter holder 400 from the filter holder accommodating portion 220. That is, when the user desires to separate or extract the filter holder 400 from the filter holder housing part 220, the user holds the protruding part 440 formed in the filter holder 400 and holds the filter holder 400 in the filter holder housing part 220).

According to the present embodiment, in order to separate or extract the filter holder 400 from the filter holder housing part 220, the user grips and pulls the protruding part 440 formed at the end of the filter holder 400, However, the present invention is not limited to this. That is, according to the present invention, since the spring and the latch are disposed inside the filter holder accommodating portion, the spring and the latch are disposed in a structure widely used as a structure for attaching and detaching the SD memory card or the like to the main body, In order to separate the filter holder from the filter holder, it is necessary to push the filter holder toward the filter holder compartment so that the latch of the latch is released and the compressed spring is released and the filter holder is automatically separated have.

The imaging device according to the present embodiment is provided with a single filter holder storage portion 220, but the present invention is not limited thereto. In other words, as described above, when a plurality of inlets are provided, a plurality of filter holder storing portions are provided, and if so, a plurality of filter holders may be fitted at the same time, if necessary.

A shutter switch 230 is provided on an upper surface of the case 210 and a flash 240 and auxiliary light means 250 are provided on the front surface 211.

A control unit (not shown) is electrically connected to the image pickup device 170 and plays a key role in photographing a subject, controlling the image pickup device 170, image processing function, and memory function.

The display unit 260 performs a function of displaying status information of the imaging apparatus. That is, the display unit 220 includes a liquid crystal display (LCD), and displays status information of the image sensing apparatus.

The display unit 260 in this embodiment does not have a function of displaying the image to be captured, but the present invention is not limited thereto. That is, the display unit 260 according to the present invention may have a function of not only displaying the status of the image capturing apparatus 10, but also displaying the captured image or displaying the captured image.

Hereinafter, the operation of the image pickup apparatus of the present embodiment will be described.

First, the image picked up by the image pickup apparatus will be described.

When a user determines an object to be imaged and places the object in front of the front lens unit 110, focuses the object, and then presses the shutter switch 230, the image light incident in the first optical axis direction L 1 passes through the front Passes through the window (213), the filter (300) and the front lens unit (110). The image light having passed through the front lens unit 110 is refracted by the reflecting member 120 and travels in the second optical axis direction L2 to be incident on the intermediate lens unit 130, the focus lens unit 140, the shutter and the diaphragm assembly 150 to be imaged on the image pickup device 170. [

The image pickup device 170 converts the image formed into an electrical signal, and the converted electrical signal is transmitted to a control unit (not shown).

An electrical signal transmitted to a control unit (not shown) undergoes image signal processing, which is performed in an image processing unit (not shown).

In the image processing unit, gamma correction and the like are performed. The gamma correction means that the information is encoded in accordance with the nonlinearity of human vision. That is, since the human vision responds nonlinearly to the brightness according to Weber's law, when the limited bit depth is given, if the brightness of the light is recorded linearly, the posterity Posterization) occurs. Therefore, in order to show the maximum image quality at a given bit depth, it is necessary to encode using a non-linear function. Performing this is called gamma correction.

The gamma correction of the image processing unit outputs the image signal input by the gamma curve by gamma correction. For example, the input brightness level of the 12-bit image signal is corrected to an 8-bit brightness level and output.

The image processing unit performs CFA interpolation for interpolating the R, G, and B gamma corrected gamma-corrected Bayer patterns embodying the GBGB lines into RGB lines. In the CFA interpolation of the image processing unit, the G channel is first restored in the pixels having only the R or B channel value, and the R, G, and B frames are filled in the order of the B channel, the R channel, Restores the channels.

The image processor converts the interpolated RGB signal into a YUV signal, edge-compensates the image by filtering the Y signal by a high-pass filter, and corrects the color values of the U and V signals using a standard color coordinate system. Corrects them, and removes their noise.

The image processor compresses and processes the Y, U, and V signals from which the noise has been removed to generate a JPEG file, and the generated JPEG file is stored in the memory by user selection, thereby completing the photographing.

The following describes a process in which the user removes the filter of the imaging device.

When the user has decided to use the filter 300 at the time of photographing, the filter 300 is attached to the filter holder 400 and then the filter holder 400 is sufficiently pushed into the inlet 215, And then stored in the charging unit 220.

When the filter holder 400 is separate from the main body 200 of the image capturing apparatus, the filter holder 400 is held on the base 410 of the filter holder 400 and the filter 300 is placed on the filter holder 400 Then, the user grips the base 410 of the filter holder 400 and pushes it into the inlet 215. On the other hand, when the filter holder 400 is an apparatus coupled to the main body 200 of the image capturing apparatus, the user does not have to hold the base 410 and grasps a part of the main body 200 of the image capturing apparatus, And then holds the base 410 of the filter holder 400 and pushes it into the inlet 215.

The filter holder 400 that has entered the inlet 215 is guided to the filter guide unit (not shown) and slid into the filter holder storage unit 220.

When the user feels the need to remove the filter 300 after the photographing is completed, the protruding portion 440 formed at the end of the mounted filter holder 400 is held by hand and pulled out of the main body 200, The filter 300 can be separated from the filter holder accommodating portion 220.

At this time, when the filter holder 400 is separate from the main body 200 of the image capture device, the filter holder 400 is completely separated from the storage part 220 and the filter holder 400 is separated from the image capture device 200 Only the filter 300 is detached from the filter holder 400 while the end of the filter holder 400 is coupled to the main body 200. In this case,

Here, if the user has decided to shoot using another filter, the other filter can be mounted to the filter holder in the same manner as described above.

As described above, according to the image pickup apparatus of the present embodiment, since the method of attaching and detaching the filter is simple, there is an advantage that the preparation time for image pickup can be shortened.

Further, according to the image pickup apparatus of the present embodiment, since the filter is mounted in the space in the cover portion and the front lens portion of the bending type camera, the volume of the image pickup apparatus can be reduced and the filter can be minimized It becomes possible to protect it.

Meanwhile, the present invention can be applied not only to the camera according to the present embodiment but also to various types and types of imaging devices such as a video camcorder, a camera-equipped mobile phone, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

1 is a schematic perspective view showing a state in which an optical module according to an embodiment of the present invention is disposed in an imaging device.

FIG. 2 is a schematic cross-sectional view of the optical module of FIG. 1 taken along line II-II.

Figs. 3 and 4 are views showing a state in which the filter holder is housed in the imaging device shown in Fig. 1. Fig.

5 is a diagram showing a state in which a cover is provided in an image pickup apparatus according to an embodiment of the present invention.

6 is a perspective view showing the relationship between the filter and the filter holder according to the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

100: Optical module 110: Front lens part

120: reflective member 130: intermediate lens unit

140: focus lens part 150: shutter and diaphragm assembly

160: barrel frame 170: image pickup element

200: main body 210: case portion

211: case part front surface 212: case part side

213: Case front face window 214: First cover

215: inlet 216: second lid

220: filter holder accommodating portion 230: shutter switch

240: flash 250: auxiliary light means

260: Display section 300: Filter

400: filter holder 410: base

420: seat part 430:

440: protrusion

Claims (10)

A front lens unit disposed along the first optical axis direction and a reflective member for refracting the image light from the front lens unit toward the second optical axis, An image pickup element for receiving image light from the front lens unit and imaging the image; At least one slot-shaped entrance is formed on one surface of the case, and a case part for housing the imaging device including the front lens part; And a filter holder accommodating portion disposed between the case portion and the front lens portion and accommodating a filter holder having a filter mounted thereon through the inlet, Wherein the filter holder includes a seat portion on which the filter is seated, a groove portion for extracting the filter from the seat portion, and a projection portion for guiding the filter holder. The method according to claim 1, Wherein the image pickup element is a CCD element. The method according to claim 1, Wherein the inlet is formed on a side surface of the case portion. The method according to claim 1, Further comprising a lid for opening and closing the filter holder retention portion. The method according to claim 1, Wherein the filter holder is completely detachable from the filter holder accommodating portion. The method according to claim 1, Wherein the filter holder is coupled to an end of the filter holder receiving portion when the filter holder is detached. delete The method according to claim 1, Wherein the seat portion has a shape corresponding to the shape of the filter. The method according to claim 1, And an opening corresponding to the shape of the filter is formed at the center of the seat portion. The method according to claim 1, Wherein a window is formed in the front surface of the case part so that the image light reflected from the subject can pass through.

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