JPH1073864A - Film holder for ccd camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a film holder capable of reducing a trouble in assembling a CCD camera where a filter and a CCD are integrated, and easily assembling the CCD camera. SOLUTION: This filter holder 10 is provided with a fixed part 25 where a CCD mount board 51 is fixed at its rear end, a filter housing part 31 in which a filter 61 for a camera is inserted from a side or upper part, and a rubber plate housing part 33 in which a plate-like elastic material 57 is inserted from the rear end. Then, the rear end of the material 57 inserted in the housing part 33 is brought into contact with the board 51 and the front surface of the material 57 inserted into the housing part 33 is allowed to press-contact with the end of the back surface of the filter 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CCD camera used as an outdoor surveillance camera and the like, and more particularly, to a filter mounting structure in a CCD camera having a filter.

[0002]

2. Description of the Related Art Today, CCD cameras using a solid-state image pickup device are frequently used as small television cameras, such as rear-view cameras for large vehicles and security cameras for outdoor use. Some of such CCD cameras use an optical quartz filter to improve the image quality of imaging, and in many cases, the filter is detachable from the lens.

In recent years, liquid crystal panel filters have also been used in order to prevent image disturbance and CCD damage due to the incidence of strong light such as backlight. In this liquid crystal panel filter, a filter case is fixed to a lens block with screws or the like, and a signal line for controlling the transmittance of the liquid crystal panel filter drawn out of the filter case is connected to a circuit in the camera case.

[0004]

As described above, the liquid crystal panel filter needs to be connected to a circuit through a signal line, which complicates the assembly of the camera. In addition, in a CCD camera provided with an optical crystal filter, a liquid crystal panel filter, and the like, the number of parts increases, and assembling requires a lot of work, and it has been difficult to mass-produce at low cost.

[0005]

According to the present invention, a CCD is provided at the rear end.
A rubber plate storage part having a fixing part for fixing the mounting substrate, a filter storage part for inserting a camera filter from the side or above, and a plate-like elastic material being insertable from the rear end. The rear end of the plate-like elastic material inserted into the rubber plate storage part can be brought into contact with the CCD mounting board, and the front surface of the plate-like elastic material inserted into the rubber plate storage part can be pressed against the rear end of the camera filter. As a filter holder of the CCD camera.

As described above, since the camera filter is a filter holder which can be inserted from the side of the filter holder and the like, and the CCD mounting board can be fixed to the filter holder, the filter and the CCD can be easily connected. Can be integrated. Also, by inserting a plate-like elastic material into the rubber plate storage part and fixing the CCD mounting board to the filter holder, a pressing force is applied to the camera filter inserted into the filter holder via the elastic material, thereby making it possible to use the camera. Filter can be fixed, filter and CCD
Thus, the main part of the camera is a simple part, and can be assembled with a small number of parts.

It is preferable to use a filter holder for a CCD camera in which a lens mount can be fixed on the front surface. As described above, if the filter holder is configured such that the lens mount can be fixed, the lens mount can be fixed, and the lens, the filter, and the CCD can be easily integrated, and the assembly of the camera can be extremely facilitated.

[0008] Further, it is preferable to provide a filter housing portion into which a rectangular filter in which an optical crystal filter and a liquid crystal panel filter are integrally laminated as a camera filter can be inserted. As described above, if it is possible to insert a filter in which an optical crystal filter and a liquid crystal panel filter are integrally laminated, an optical crystal filter for improving image quality and a liquid crystal panel filter for backlight compensation are combined with a CCD, and the optical crystal filter and the liquid crystal panel are combined. A CCD camera having a filter and a conductive rubber can be used as a plate-like elastic material to be inserted into the rubber plate housing, thereby facilitating the processing of wiring to the liquid crystal panel filter. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an embodiment of the present invention employs an optical crystal filter 65 and a liquid crystal panel filter 63.
This employs a filter holder 10 having a filter storage section 31 for storing a camera filter 61 in which are laminated. The filter holder 10 has a screw hole 29 for fixing the lens mount 41 to the front wall 11 so that the lens mount 41 can be fixed to the front wall 11 with a screw 45 and a CCD mounting substrate 51 is fixed to the rear end. It has a fixing portion 25 having a mounting hole 27 to be formed.

The front wall 11 is a plane parallel to the CCD mounting board 51 mounted on the fixed portion 25. As shown in FIGS. 1 and 2, side walls 15 are respectively formed from the left and right ends of the front wall 11 to the rear, and a bottom wall 19 is formed from the lower end of the front wall 11 to the rear, so that a space is formed inside. The filter holder 10 is formed.

In this internal space, a partition wall 21 is provided in parallel with the front wall 11, and the space between the partition wall 21 and the front wall 11 is adjusted to the thickness of the filter. The space between them is used as the filter housing 31. The front wall 11 is provided with a through hole 13 and the partition wall 21 is also provided with a through hole 23.
And a filter holder 10 configured to transmit light of a lens mounted on the lens mount 41.

Furthermore, each side wall 15 behind the partition wall 21
Each of the left and right side walls 15 is provided with a rectangular through hole extending from the filter housing portion 31 to the rear end of the filter holder 10 inside the left and right side walls 15, and a rubber plate. The storage section 33 is formed. As described above, the filter storage section 31 which is a space sandwiched between the front wall 11 and the partition wall 21 and has the side walls 15 on the left and right sides and the bottom wall 19 provided below, has a size of this space. The combined rectangular camera filter 61 can be easily inserted from above.

Each of the left and right side walls 15 is provided with a locking claw 17 slightly projecting from the filter housing 31D so that the upper end corner of the camera filter 61 inserted into the filter housing 31 can be locked. I have to. Then, by inserting a rubber plate, which is a plate-like elastic material 57, into the rubber plate storage portion 33 and mounting the CCD mounting substrate 51 to the fixing portion 25, as shown in FIG.
The camera filter 61 can be pressed and fixed inside the front wall 11.

When the CCD mounting substrate 51 is mounted on the fixing portion 25 of the filter holder 10 with the screw 47, the CCD mounting substrate 51 is aligned with the optical axis of the lens 43 mounted on the lens mount 41 fixed to the front wall 11 of the filter holder 10. The position of the CCD 53 is adjusted. Further, as the camera filter 61, a filter in which an infrared cut filter 67 is overlapped on the front surface of a plate-shaped optical crystal filter 65, and a liquid crystal panel filter 63 is further overlapped behind the optical crystal filter 65 is used.

When a laminated filter of the optical crystal filter 65 and the liquid crystal panel filter 63 is used, a plate-like elastic material
The conductive rubber is used as 57, and the electrode 69 of the liquid crystal panel filter 63 is provided on the pressure contact surface between the front surface of the conductive rubber and the camera filter 61.
Are arranged so as to be positioned, and an electrode portion 55 corresponding to the conductive rubber electrode is formed at a contact portion of the CCD mounting substrate 51 with the rubber plate.

As described above, a cubic conductive rubber is used as the plate-like elastic member 57 for pressing and fixing the camera filter 61, and the electrode 69 is formed on the rear surface of the camera filter 61. If the CCD mounting board 51 is fixed to the filter holder 10 while the electrode portion 55 is formed and the camera filter 61 is fixed to the filter holder 10 by the conductive rubber, wiring to the liquid crystal panel filter 63 is performed by the conductive rubber. Wiring to the liquid crystal panel filter 63 can be easily performed.

Further, a camera filter 61 is inserted into the filter storage section 31 from above the filter holder 10 into the filter holder 10 having the fixing section 25 for fixing the CCD mounting board 51, and a plate-like By fixing the CCD mounting board 51 to the fixing portion 25 by inserting the elastic member 57, the camera filter 61 and the CCD 53 can be very easily integrated.

If the lens mount 41 can be attached to the front surface of the filter holder 10, the CCD camera with the filter can be easily obtained simply by attaching the exterior and screwing the camera lens 43 into the lens mount 41. The CCD camera can be assembled very easily with a small number of parts. Furthermore, this filter holder
10 is a camera filter 61 that is inserted into the filter
Is fixed by the elastic member 57 by the pressing force from the CCD mounting board 51, so that when the liquid crystal panel filter 63 is used, the wiring between the camera filter 61 and the CCD mounting board 51 can be performed using conductive rubber, CCD mounting board 51 to CC
Since the signal line of the liquid crystal panel filter 63 can be wired together with the wiring of D53, the CC incorporating the liquid crystal panel filter 63
The D camera can be easily assembled.

Also, by adjusting the length of the conductive rubber in the front-rear direction and adjusting the distance from the front surface of the lens mount 41 to the imaging surface 59 of the CCD to the focal length of a C-mount lens or the like, the front-rear width of the filter housing 31 is increased. However, if the multilayer filter 61 such as the liquid crystal panel filter 63 or the optical crystal filter 65 is housed in the filter housing 31, the number of parts is small, and the assembly of the outdoor CCD camera equipped with various filters becomes extremely easy. .

Further, conductive rubber is arranged near the CCD 53, various filters 61 are stored in front of the CCD 53, and
Filter holder 10 that can fix lens mount 41
Can easily downsize a high-performance CCD camera equipped with a filter. If the locking claw 17 slightly protruding from the side wall 15 to the filter storage unit 31 is provided at the upper part of the side wall 15, before the camera filter 61 inserted into the filter storage unit 31 is fixed by the elastic material. The camera filter 61 can be inserted into the filter storage section 31, a plate-like elastic material such as conductive rubber can be inserted into the rubber plate storage section 33, and the CCD mounting board 51 can be fixed with screws 47. The assembling work can be performed more easily.

In the above embodiment, a camera filter is used.
Although the 61 is inserted from above, the upper wall may be formed as appropriate, the filter housing 31 may be opened on one side wall 15, and the camera filter 61 may be inserted from the side. And in this case, the rubber plate storage
33 may be provided on the bottom wall 19 or the upper wall.

[0022]

The filter holder according to the present invention is a CCD holder.
The filter has a fixing portion for fixing the mounting substrate, has a filter storage portion for inserting a camera filter, and a plate-like elastic material inserted into the rubber plate storage portion is brought into contact with the filter and the CCD mounting substrate. By inserting a plate-like elastic material into the rubber plate storage part and fixing the CCD mounting board, thereby reducing the number of assembling steps of the CCD camera integrating the filter and the CCD, and facilitating the CC operation.
This is a filter holder capable of assembling a D camera.

Further, the filter holder capable of fixing the lens mount can easily assemble the lens, the filter, and the CCD, which are main parts of the CCD camera, with a small number of parts. A filter holder having a filter storage portion that allows a filter in which an optical crystal filter and a liquid crystal panel filter are laminated to be inserted can be easily connected to the liquid crystal panel filter so that a filter and a CCD camera can be integrated. It can be very easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an assembled state of a camera using a filter holder according to the present invention.

FIG. 2 is a perspective view of a filter holder according to the present invention.

FIG. 3 is a sectional side view showing an assembled state of the camera using the filter holder according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 filter holder 11 front wall 13 through hole 15 side wall 17 locking claw 19 bottom wall 21 partition wall 23 through hole 25 fixing portion 27 fixing hole 29 screw hole 31 filter storage portion 33 rubber plate storage portion 41 lens mount 43 lens 45 screw 47 screw 51 CCD mounting board 53 CCD 55 electrode 57 elastic material 59 imaging surface 61 camera filter 63 liquid crystal panel filter 65 optical crystal filter 67 infrared cut filter 69 electrode

Claims (3)

[Claims] 1. A rear part having a fixing part for fixing a CCD mounting substrate, a filter storage part capable of inserting a camera filter from the side or above, and a plate-like elastic material from the rear end. A rubber plate storage portion that allows insertion of a rubber plate is provided, and the rear end of the plate-like elastic material inserted into the rubber plate storage portion is brought into contact with the CCD mounting substrate, and a front surface of the plate-like elastic material inserted into the rubber plate storage portion is used as a camera. A filter holder for a CCD camera, wherein the filter holder can be pressed against the rear end of the filter. 2. The filter holder for a CCD camera according to claim 1, wherein a lens mount can be fixed to a front surface. 3. The camera according to claim 1, further comprising a filter housing portion into which a rectangular filter obtained by laminating an optical crystal filter and a liquid crystal panel filter can be inserted as a camera filter. Filter holder for CCD camera.