KR100818409B1 - Iris for photographing appratus - Google Patents

Abstract

An iris for a photographing device is provided to reduce its thickness and simplify its configuration by integrating iris wings and an MD filter into one component and minimize a problem that the iris wings are disturbed by each other when respectively moving in left and right directions. An iris(10) for a photographing device comprises a plate(11) where a transmission hole is formed, and iris wings(13,14) for adjusting the amount of light penetrating the transmission hole(113). In the iris wings, a transparent unit(143), a semitransparent unit(142) and an opaque unit(131) are integrally formed. In the transparent unit and the semitransparent unit, the light is penetrated. In the opaque unit, the light is not penetrated. When the iris wings are overlapped with each other, the opaque unit of the first iris wing hides the transmission hole. The light is not penetrated through the transmission hole.

Description

Iris for photographing appratus}

1 is a view showing an iris for a conventional photographing apparatus.

Figure 2 is a view showing the iris wings in the iris for a conventional photographing apparatus.

3 is a front view of the iris for the photographing apparatus according to the present invention.

4 is a rear view of the iris for the photographing apparatus according to the present invention;

5 is a view showing a first iris wing according to the present invention.

6 is a view showing a state in which a predetermined part is opened so that a predetermined light is transmitted through the iris for the photographing apparatus according to the present invention;

7 is a view showing a state in which the iris for a photographing apparatus according to the present invention is fully opened.

<Description of main parts of drawing>

10: iris 11: plate

12: motor 13: first iris wing

14: second iris wing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iris for a photographing apparatus, and more particularly, to an iris for a photographing apparatus that can be formed to have a small thickness by simplifying a structure.

In general, the photographing apparatus refers to an apparatus for recording an image signal generated by photographing a subject onto a recording medium through predetermined signal processing. The imaging of the subject is performed by an imaging device provided in the photographing apparatus. Examples of the photographing apparatus include a camera and a closed circuit television (CCTV).

In order to image the subject more clearly in the photographing apparatus, the amount of light incident on the image pickup device must be maintained at an appropriate amount. To this end, the imaging apparatus is provided with an iris for adjusting the amount of light incident on the image pickup device.

That is, the photographing apparatus automatically adjusts the opening and closing amount of the iris to provide a function of optimizing the amount of light incident on the image pickup device. When the subject is dark, the iris is opened to increase the amount of light incident on the image pickup device. When is bright, the iris is closed to reduce the amount of light incident on the image pickup device.

1 is a view showing a iris for a conventional photographing apparatus, Figure 2 is a view showing the iris wings in the conventional iris.

1 and 2, a conventional iris for a photographing apparatus includes a plate 1 and a first iris wing made of an opaque material which is movably coupled to the plate 1 in a horizontal direction and does not transmit light. 2) and second iris blades 3 and MD filters 5 and 6 coupled to and fixed to the first and second iris blades 2 and 3, respectively.

As shown in FIG. 2, a hole 4 is formed in the first iris wing 2 to allow light to pass through the center portion. Similarly, the second iris wing 3 is formed with a hole through which light is transmitted. Here, the hole 4 is an area in which light is transmitted 100%.

Accordingly, as the first and second iris wings 2 and 3 are moved in the left and right directions, the size of the hole 4 is changed, so that the iris receives the amount of light incident on a predetermined image pickup device (not shown). Can be adjusted.

Here, the MD filters 5 and 6 are made of a semi-transparent material so that the light is transmitted through half or 1/4, and the iris is used to enlarge the range in which the amount of light incident on the image pickup device can be adjusted. will be.

That is, when the iris adjusts the amount of light incident on the image pickup device only by the hole 4 whose size is adjusted by the left and right movement of the first and second iris wings 2 and 3, Only 100% is transparent. However, when the MD filters 5 and 6 are installed to cover the holes 4 in the first and second iris vanes 2 and 3, light is 50% or less in the areas of the MD filters 5 and 6. 25% and the like can be variously transmitted, so that the range in which the iris can adjust the amount of light incident on the image pickup device can be expanded.

However, the conventional iris for the photographing apparatus can be overlapped in four layers by overlapping the first and second iris blades 2 and 3 and the MD filters 5 and 6, thereby increasing the thickness of the iris. there is a problem. In general, since the portion in which the iris is installed in the photographing apparatus is to be formed very thin, the thickness of the iris needs to be thin.

In addition, since the first and second iris blades 2 and 3 and the MD filters 5 and 6 are configured to move left and right, the conventional iris for the photographing apparatus becomes complicated. There is a problem in that the probability that the two iris wings 2 and 3 and the MD filters 5 and 6 are caught with each other becomes high.

In addition, in the conventional iris for the photographing apparatus, light reflected by the MD filters 5 and 6 is generated, and a ghost is generated in the image signal obtained by the photographing apparatus.

The present invention integrates the iris wing and the MD filter to solve the above-mentioned problems, and by implementing a single component, the thickness can be reduced and the configuration can be simplified, as well as to minimize the problems that are caught when moving in the left and right directions An object of the present invention is to provide an iris for a photographing apparatus.

In addition, an object of the present invention is to provide an iris for a photographing apparatus that can reduce the amount of reflected light to reduce the phenomenon of ghosts.

The iris for a photographing apparatus according to the present invention for achieving the object as described above includes a plate in which a transmission hole is formed, and an iris wing coupled to the plate to adjust an amount of light passing through the transmission hole, and the iris The wing is characterized in that the transparent portion and the translucent portion through which light is transmitted, and the opaque portion through which light is not transmitted are integrally formed.

According to another aspect of the present invention, there is provided an iris for a photographing apparatus comprising: a plate on which a transmission hole is formed; A motor provided at one side of the plate; And first and second iris blades interlocked with the motor to adjust the amount of light passing through the transmission hole, wherein the first and second iris blades each include a transparent portion through which light is completely transmitted, The translucent portion having a transmittance and the opaque portion through which light is not transmitted are integrally formed.

According to the proposed invention, the thickness of the iris for the photographing apparatus can be thinned and the configuration can be simplified.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of the present invention or other inventions which are further developed by addition, change, deletion, etc. of other components are easily limited. Make sure you can.

3 is a front view of the iris for a photographing apparatus according to the present invention, and FIG. 4 is a rear view of the iris for the photographing apparatus according to the present invention, showing a state in which light is not transmitted through the iris for the photographing apparatus.

3 and 4, a plate 11 made of an opaque material and a motor 12 provided on one side of the plate 11 to prevent light from being transmitted to the iris 10 for a photographing apparatus according to the present invention. And first and second iris blades 13 and 14 which are slid in the lateral direction by the motor 12.

In detail, the motor 12 has a first connecting shaft 121 above the motor 12 and a second connecting shaft 123 downward so that the motor 12 rotates by a predetermined angle in association with the rotation of the motor 12. Connected.

Therefore, when the motor 12 rotates in the clockwise direction, the first connecting shaft 121 and the second connecting shaft 123 are based on the front surface of the plate 11, that is, the front surface of the iris 10. Rotate clockwise.

In addition, first and second protrusions 122 and 124 protruding to the rear surface of the plate 11 are formed at ends of the first and second connection shafts 121 and 123, respectively, and the first and second protrusions are formed on the plate 11. First and second rotation guide holes 111 and 112 are formed to protrude 122 and 124 to the rear surface of the plate 11, respectively.

Therefore, when the motor 12 rotates in the clockwise direction, the first protrusion 122 and the second protrusion rotate in the counterclockwise direction with respect to the rear surface of the plate 11, that is, the rear surface of the iris 11. do.

In addition, the first iris wing 13 is provided with a protrusion groove 135 for catching the second protrusion 124, and the second iris wing 14 has a protrusion groove for catching the first protrusion 122 ( 145 is formed.

Therefore, when the motor 12 rotates in the clockwise direction, the first iris wing 13 is connected to the first protrusion 122 based on the rear surface of the plate 11, that is, the rear surface of the iris 11. It is slid to the right by the second iris wing 14 is slid to the left by the second protrusion 124.

If the motor 12 is rotated counterclockwise, the first iris wing 13 may slide to the right and the second iris wing 14 may slide to the left.

Preferably, a plurality of protrusions 113 are formed on the rear surface of the plate 11, and the plurality of protrusions 113 are caught by the first iris wings 13 so that the first iris wings 13 are left and right. A guide groove 144 may be formed to guide to slide in the direction. Similarly, a guide groove may be formed in the second iris wing 14 to guide the second iris wing 14 so that the second iris wing 14 slides in the left and right directions.

As described above, the iris 10 for the photographing apparatus according to the present invention may slide the first and second iris vanes 13 and 14 to cross each other in the left and right directions according to the rotation direction of the motor 12.

In addition, the first and second iris wings 13 and 14 are coupled to the rear surface of the plate 11 so as to overlap each other. Then, as the first and second iris vanes 13 and 14 slide by the motor 12 to cross each other in the left and right directions, the first and second iris vanes 13 and 14 do not overlap or overlap each other. do.

In addition, the second iris wing 14 has a transparent portion 143 which is formed to be transparent to transmit 100% of the light in the center, and a variety of light, such as 50% or 25% on one side of the transparent portion 143 The translucent portion 142 is formed to have a predetermined transmittance so as to be transmitted, and the opaque portion 141 is formed in other portions except the transparent portion 143 and the translucent portion 142 is formed so as not to transmit light. . Similarly, an opaque portion 131, a translucent portion (not shown) and a transparent portion (not shown) are formed in the first iris wing 13.

Here, the translucent portion 142 is a part that serves as a conventional MD filter. A detailed description of the second iris wing 14 will be described later with reference to FIG. 5.

Therefore, as shown in FIG. 3, when the first and second iris wings 13 and 14 overlap each other, an opaque portion 131 of the first iris wing 13 is positioned at the center of the plate 11. It is formed to cover the transmission hole 113 to allow light to pass through, so that light does not pass through the transmission hole 113.

On the contrary, when the first and second iris vanes 13 and 14 are alternately slid left and right by the motor 12 and do not overlap each other, the transparent portions of the first and second iris vanes 13 and 14 are translucent. An additional part is positioned in the transmission hole 113, and thus light may pass through the transmission hole 113.

5 is a view showing a first iris wing according to the present invention.

Referring to FIG. 5, the first iris wing 13 is formed to be integrally treated with contrast so that the degree of light transmission may vary.

That is, the first iris wing 13 may have a transparent portion 143 formed to be transparent so that 100% of light may be transmitted to the center portion, and a predetermined amount of light may be transmitted to one side of the transparent portion 143. The translucent portion 142 is formed to have a predetermined transmittance so as to, and other portions except the transparent portion 143 and the translucent portion 142 includes an opaque portion 141 is formed to be opaque so as not to transmit light. .

For example, if the first iris wing 13 is used as a transparent material, the translucent portion 142 and the opaque portion 141 except for the transparent portion 143 may have a predetermined transmittance by black painting or printing. Or may be formed so that light is not transmitted.

Here, the transparent portion 143 is a portion corresponding to a hole formed in the iris wing of the conventional iris for the imaging device, the translucent portion 142 is a portion corresponding to the MD filter (MD filter), the opaque portion ( 143) corresponds to the iris wing.

In addition, the second iris wing 14 is also formed with a transparent part, a translucent part, and an opaque part like the first iris wing 13.

Therefore, as the first and second iris wings 13 and 14 slide left and right, the translucent portions of the first and second iris wings 13 and 14 are formed in the transmission hole 113 formed at the center of the plate 11. The portion and the transparent portion may be positioned so that light may pass through the transmission hole 113.

In this case, since the translucent portion is formed to have a predetermined transmittance such that light can be transmitted at 50% or 25%, etc., the iris 10 can adjust the amount of light incident on the predetermined image pickup device. The range can be expanded.

That is, as the iris 10 slides in the left and right directions of the first and second iris wings 13 and 14, each of the first and second iris wings 13 and 14 is transparent to the transmission hole 113. The portion and the translucent portion are positioned so that the amount of light passing through the transmission hole 113 can be variously adjusted, so that the range in which the iris 10 can adjust the amount of light incident on the image pickup device can be expanded. Can be.

Preferably, the translucent portion may be formed in various shapes such as V-shaped, circular, straight. Then, as the first and second iris wings 13 and 14 are alternately slid in the left and right directions to overlap each other, the light amount control effect of the iris 10 may be enhanced by the shape of the translucent portion.

Therefore, according to the iris 10 according to the present invention, the first and second iris wings 13 and 14 made of one material play a role of an iris wing and an MD filter made of a separate material in the conventional iris. In, the thickness of the iris 10 can be thin, and the structure can be simplified to facilitate the manufacture.

In addition, according to the iris 10 according to the present invention, since only the first and second iris wings 13 and 14 are slid in the left and right directions, a locking problem that may occur due to the sliding may be reduced.

In addition, according to the iris 10 according to the present invention, the generation of ghosts can be reduced in that the eddy filter having severe reflection in the conventional iris is removed.

6 is a view showing a state in which a predetermined portion is opened so that a predetermined light is transmitted through the imaging device iris according to the present invention, Figure 7 is a view showing a state in which the imaging device iris is fully opened.

That is, FIG. 6 is a view showing that the iris 10 is opened in a predetermined portion so that a predetermined amount of light is incident on the image pickup device. In this case, when the subject is somewhat dark, the iris 10 has a predetermined amount of light. The state in which the amount of light is incident on the predetermined image pickup device is shown.

FIG. 7 is a view showing that the maximum amount of light is incident on the image pickup device with the iris 10 fully open. In this case, when the subject is very dark, the iris 10 shows the maximum amount of light. The state in which light is incident on the image pickup device is shown.

As shown in FIGS. 6 and 7, when the motor 12 rotates clockwise, the first and second connectors 121 and 123 are rotated by a predetermined angle in the clockwise direction with respect to the front of the iris 10. The first iris wing 13 moves to the left and the second iris wing 14 moves to the right.

Then, as the first iris wing 13 is moved to the left and the second iris wing 14 is moved to the right, the transparent portions 133 and 143 of each of the first and second iris wings 13 and 14 are transferred to the transmission hole. Overlaid in the state located at 113, the translucent portions 132, 142 are also located in the transmission hole (113).

Therefore, light may be transmitted through the transmission hole 113, so that the iris 10 can adjust the amount of light incident on a predetermined image pickup device.

According to the iris for a photographing apparatus according to the present invention, by integrating the iris wing and the md filter and implementing it as a single material, the thickness can be thinner and the configuration can be simplified, thereby facilitating manufacture.

In addition, according to the present invention, when the two iris wings are slid in the left and right directions staggered with each other, the problem of being caught with each other can be minimized.

In addition, according to the present invention it is possible to reduce the amount of reflected light to reduce the phenomenon of ghosts.

Claims (8)

A plate having a transmission hole formed therein, and an iris wing coupled to the plate to adjust an amount of light passing through the transmission hole, The iris wing is an iris for photographing apparatus, characterized in that the transparent portion and the translucent portion through which light is transmitted, and the opaque portion through which light is not transmitted. The method of claim 1, The transparent part is an iris for a photographing apparatus, characterized in that the central portion of the iris wings, the translucent portion is formed on one side of the transparent portion. The method of claim 1, The iris wing is made of a transparent material through which light is transmitted, And the translucent portion is printed to have a predetermined transmittance, and the opaque portion is printed so that light is not transmitted. The method of claim 1, The translucent portion is an iris for a photographing apparatus, characterized in that formed in a V-shape. A plate on which a through hole is formed; A motor provided at one side of the plate; And And first and second iris blades interlocked with the motor to adjust an amount of light passing through the transmission hole. Each of the first and second iris wings includes an transparent part through which light is completely transmitted, a translucent part having a predetermined transmittance, and an opaque part through which light is not transmitted. The method of claim 5, wherein And the first and second iris vanes are alternately moved in the left and right directions by the motor to adjust the amount of light passing through the transmission hole. The method of claim 5, wherein And the first and second iris vanes are coupled to the plate so as to overlap each other by the motor. The method of claim 5, wherein And the amount of light passing through the transmission hole is controlled as the transparent portion, the semi-transparent portion, and the opaque portion formed on each of the first and second iris wings are overlapped with each other by the motor.

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