KR970003031B1 - Iris for small image pick-up device - Google Patents

Iris for small image pick-up device Download PDF

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Publication number
KR970003031B1
KR970003031B1 KR1019920022414A KR920022414A KR970003031B1 KR 970003031 B1 KR970003031 B1 KR 970003031B1 KR 1019920022414 A KR1019920022414 A KR 1019920022414A KR 920022414 A KR920022414 A KR 920022414A KR 970003031 B1 KR970003031 B1 KR 970003031B1
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KR
South Korea
Prior art keywords
light
light control
holes
lever
main body
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KR1019920022414A
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Korean (ko)
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KR940013155A (en
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김준호
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삼성항공산업 주식회사
이대원
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Priority to KR1019920022414A priority Critical patent/KR970003031B1/en
Publication of KR940013155A publication Critical patent/KR940013155A/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00Exposure-making shutters; Diaphragms
    • G03B9/02Diaphragms
    • G03B9/07Diaphragms with means for presetting the diaphragm

Abstract

The diaphragm apparatus includes a meter(4) which is installed in a main body(1) in which a solid image sensor(2) and one lens(2) or more are installed along the same axis; a lever(5) installed at a rotational axis of the meter(4); a guide plate(6) which is installed at a front surface of the main body(1) and which has a couple of guide holes(6a and 6b), each of which is of arc-shape; pins(6 and 6') which are superimposed with each other at the guide plate(6) to be movable with respect to each other; a first and a second light quantity control plates(7 and 8) which have a first light control holes(7a) having a drop-shape and a second light control hole(8a) having a reverse shape of the first light control holes(7a), the first and a second light quantity control plates(7 and 8) which is connected with the lever(5) with the pins(6 and 6') which passes through the guide holes, respectively; and means for reducing a quantity of light in a high luminance.

Description

소형촬상기기의 조리개장치Aperture Device of Compact Camera

제1도는 본 발명에 따른 소형촬상기기의 조리개장치를 도시한 측단면도.1 is a side cross-sectional view showing an aperture device of a compact photographing apparatus according to the present invention.

제2도는 제1도에 도시된 제1, 제2광량조절판의 저휘도시의 중첩상태를 도시한 개략도.FIG. 2 is a schematic diagram showing an overlapping state of low luminance of the first and second light control plates shown in FIG.

제3도는 제1도에 도시된 제1 제2광량조절판의 고휘도시의 중첩상태를 도시한 개략도.FIG. 3 is a schematic diagram showing an overlapping state of high luminance of the first second light control plate shown in FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 2 : 고체촬상소자1 main body 2 solid state image pickup device

3 : 복수개의 렌즈 4 : 메터(Meter)3: A plurality of lenses 4: Meter

5 : 레버 6 : 가이드판5 lever 6 guide plate

6a,6b : 원호형 가이드장공 7,8 : 제1, 제2광량조절판6a, 6b: arc-shaped guide slot 7,8: first, second light control plate

7a,8a : 제1, 제2광조절공 9,9 : 핀7a, 8a: first and second light control holes 9,9: pin

10 : 네오디뮴필터(neodymium filiter)10: neodymium filiter

본 발명은 소형 캠코더, 감시용 카메라, 비디오 도아 카메라 등과 같은 소형촬상기기의 조리개장치에 관한 것으로서 특히 광량의 제어범위가 넓고, 소형촬상기기에 적합한 소형촬상기기의 조리개장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm device for a small size camera such as a small camcorder, a surveillance camera, a video camera, and the like, and more particularly, to an aperture device for a small size camera suitable for a small size camera with a wide range of light control.

종래의 소형 촬상기기 예컨대, 소형 캠코더, 소형 감시용 카메라, 비디오 도아 카메라 등에는 전자셔터를 채용하여 광량을 조절하도록 되어 있다.Conventional miniature imaging devices, such as miniature camcorders, miniature surveillance cameras, video door cameras and the like, employ electronic shutters to adjust the amount of light.

그러나 이와 같은 전자셔터는 태양광과 같은 고휘도 상황에서 광량을 조절하는데 한계가 있어 즉, 전자셔터의 속도가 1/20000 정도로 낮아 화면 번짐(blooming, smear) 등이 심하게 나타나게 되는 문제점이 있었다.However, such an electronic shutter has a limitation in controlling the amount of light in a high brightness situation such as sunlight, that is, the speed of the electronic shutter is about 1/20000, so that there is a problem in that screen blurring (blooming, smear), etc. are severe.

본 발명은 상술한 바와 같은 문제점을 감안하여 창출된 것으로서, 광량의 제어범위가 넓고, 소형촬상기기에 적합한 소형촬상기기의 조리개장치를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a diaphragm apparatus for a small size photographing apparatus having a wide control range of light quantity and suitable for a small size photographing apparatus.

상기의 목적을 달성하기 위하여 본 발명은, 고체촬상소자 및 복수개의 렌즈가 동축상으로 내장된 본체에 설치되며 그 회전축에 레버가 설치된 구동수단으로서의 메터(Meter)와; 상기 본체의 전면에 설치되며 한쌍의 원호형 가이드장공이 상호 대향되도록 형성된 가이드판과; 상기 가이드판에 상호 중첩된 상태로 상호반대방향으로 이동 가능하게 설치되며, 상기 원호형 가이드장공을 각각 관통하는 핀에 의해 상기 레버의양단과 그 일단이 각각 회동가능하게 연결되고, 몸체에 떨어지는 물방울형상 및 이와 반대형상의 제2, 제1광조절공이 각각 형성된 제2, 제1광량조절판과; 상기 제1광량조절판에 형성된 제1광조절공의 꼬리부분과 중첩되게 설치되어 고휘도에서 광량을 조절하는 광량조절수단을 구비하여 구비된 점에 그 특징이 있다.In order to achieve the above object, the present invention, a solid-state image pickup device and a plurality of lenses are installed in the main body is built coaxially and the meter (Meter) as a drive means provided with a lever on the rotating shaft; A guide plate installed on the front surface of the main body and configured to have a pair of arc-shaped guide holes facing each other; It is installed so as to be movable in the opposite directions in the state overlapping each other on the guide plate, the both ends and one end of the lever are connected to each other rotatably by pins passing through the arc-shaped guide hole, respectively, water droplets falling on the body Second and first light amount adjusting plates each having a shape and an opposite shape of the second and first light adjusting holes; It is characterized in that it is provided to overlap with the tail portion of the first light control hole formed in the first light control plate provided with a light amount adjusting means for adjusting the light amount at high brightness.

이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 촬영기기의 조리개장치는 제1도 및 제3도에 도시되어 있는 바와 같이, 본체(1) 내부에 고체촬상소자(2)와 복수개의 렌즈(3)가 동축상으로 설치되고, 본체(1)의 상부에는 광량에 따라 구동되는 메터(4)가 설치된다. 그리고 상기 메터(4)의 회전축(4a)에는 레버(5)가 설치되고, 상기 본체(1)의 전면에는 상측에 한쌍의 원호형 가이드장공(6a)(6b)이 상호 대향되도록 형성되고, 하측에 상기 렌즈(3)와 동축을 이루는 광통과공(6c)이 형성된 가이드판(6)이 설치된다. 그리고 상기 가이드판(6)에는 제1, 제2광량조절판(7)(8)이 상호 중첩된 상태로 상호 반대방향으로 이동 가능하게 설치되고, 이 제1, 제2광량조절판(7)(8)은 상기 원호형 가이드장공(6a)(6b)을 각각 관통하는 핀(9)(9')에 의해 상기 레버(5)의 양단과 그 일단이 각각 회동 가능하게 연결되며, 이 제1, 제2광량조절판(7)(8)에는 떨어지는 물방울 형상의 제2광조절공(8a)과 이와 반대형상의 제1광조절공(7a)이 각각 형성된다. 그리고 상기 제1, 제2광량조절판(7)(8)중 상부에 위치하는 제1광량조절판(7)에는 이에 형성된 제2광조절공(7a)의 꼬리부분과 중첩되도록 고휘도에서 광량을 줄이는 광량조절수단이 마련된다. 상기 광량조절수단으로는 네오디뮴필터(neodymium filiter; 10)가 사용된다.In the aperture device of the photographing apparatus according to the present invention, as shown in FIGS. 1 and 3, a solid-state imaging device 2 and a plurality of lenses 3 are coaxially installed inside the main body 1, The upper part of the main body 1 is provided with a meter (4) driven according to the amount of light. And the lever (5) is installed on the rotating shaft (4a) of the meter (4), a pair of arc-shaped guide long holes (6a) (6b) formed on the front side of the main body 1 to face each other, the lower side A guide plate 6 having a light passing hole 6c coaxial with the lens 3 is formed thereon. The first and second light intensity control plates 7 and 8 are installed on the guide plate 6 so as to be movable in opposite directions in a state where the first and second light intensity control plates 7 and 8 overlap each other. ) And both ends and one end of the lever 5 are rotatably connected to each other by pins 9 and 9 'penetrating through the arc-shaped guide holes 6a and 6b, respectively. The second light control plates 7 and 8 are provided with falling water droplet-shaped second light control holes 8a and opposite first light control holes 7a, respectively. In addition, the first light control plate 7 positioned at an upper portion of the first and second light control plates 7 and 8 has a light amount that reduces the light amount at high brightness so as to overlap with the tail portion of the second light control hole 7a formed therein. Adjustment means are provided. A neodymium filter (neodymium filiter) 10 is used as the light quantity adjusting means.

이와 같이 구성된 본 발명에 따른 소형촬상기기의 조리개장치는 다음과 같이 광량을 조절하게 된다.The aperture device of the compact photographing apparatus according to the present invention configured as described above adjusts the amount of light as follows.

메터(4)가 구동되어 레버(5)를 회전시키면, 이 레버(5)의 양단과 제1, 제2광량조절판(7)(8)의 일측을 각각 연결시킴과 동시에 가이드판(6)에 형성된 한쌍의 원호형 가이드장공(6a)(6b)에 각각 결합된 핀(9)(9')이 원호형 가이드장공(6a)(6b)을 따라 이동되게 됨에 따라 제1, 제2광량조절판(7)(8)이 상하 반대방향으로 이동되면서 이들에 각각 형성된 제1, 제2광조절공(7a)(8a)이 상호 중첩되는 상태에 따라 고체촬상소자로 입사되는 광량이 조절되게 된다. 이때 제1, 제2광조절공(7a)(8a)이 떨어지는 물방울 형상으로 길게 형성되어 있으므로, 광량변화에 민감하게 대응할 수 있게 되어 광량의 제어범위가 넓어지게 된다.When the meter 4 is driven and the lever 5 is rotated, both ends of the lever 5 and one side of the first and second light intensity control plates 7 and 8 are respectively connected to the guide plate 6. As the pins 9 and 9 'respectively coupled to the pair of arc-shaped guide holes 6a and 6b formed are moved along the arc-shaped guide holes 6a and 6b, the first and second light control plates ( 7) (8) is moved in the up and down direction, and the amount of light incident on the solid state image pickup device is adjusted according to the state in which the first and second light control holes 7a and 8a respectively formed thereon overlap each other. At this time, since the first and second light control holes 7a and 8a are formed long in the shape of falling water droplets, the first and second light control holes 7a and 8a can be sensitive to changes in the amount of light, thereby widening the control range of the amount of light.

제2도에는 저휘도시의 제1, 제2광조절공(7a)(8a)의 중첩상태가 도시되어 있는데, 이는 제1광량조절판(7)에 형성된 제1광조절공(7a)의 머리부분과 제2광량조절판(8)에 형성된 제2광조절공(8a)의 머리부분이 중첩되어 원형공 형태를 이루면서 입사되는 광량이 최대가 되도록 되어 있다. 여기에서 상기 제1, 제2광조절공(7a)(8a)에 의해 형성되는 원형공의 직경은 약 4mm인 것이 바람직하다.FIG. 2 shows the superposition of the first and second light control holes 7a and 8a of the low luminance, which is the head of the first light control hole 7a formed in the first light control plate 7. And the head portion of the second light control hole (8a) formed in the second light control plate 8 is overlapped to form a circular hole to the maximum amount of incident light. Herein, the diameter of the circular hole formed by the first and second light control holes 7a and 8a is preferably about 4 mm.

그리고 제3도에는 고휘도시의 제1, 제2광조절공(7a)(8a)의 중첩상태가 도시되어 있는데, 이는 제1광량조절판(7)에 형성된 제1광조절공(7a)의 꼬리부분과 제2광량조절판(8)에 형성된 제2광조절공(8a)의 꼬리부분이 상호 중첩되어 입사되는 광량이 최소가 되도록 되어 있다. 이때 상기 제1광량조절판(7)에 이에 형성된 제1광조절공(7a)의 꼬리부분과 중첩되도록 설치된 광량조절수단으로서의 네오디뮴필터(10)에 의해 광량이 줄어들게 됨에 따라 제1, 제2광조절공(7a)(8a)이 중첩되어 이루는 광통과 부위를 줄일 수 있게 되어 광량의 제어범위가 넓어지게 된다.3 shows a superposition state of the first and second light control holes 7a and 8a of the high brightness, which is the tail of the first light control hole 7a formed in the first light control plate 7. The portion and the tail portion of the second light control hole 8a formed in the second light control plate 8 overlap each other to minimize the amount of incident light. At this time, as the amount of light is reduced by the neodymium filter 10 as the light amount adjusting means installed in the first light control plate 7 so as to overlap the tail portion of the first light control hole 7a formed therein, the first and second light control The light passing portion formed by the overlapping of the balls 7a and 8a can be reduced, so that the control range of the amount of light is widened.

여기에서 상기 제1, 제2광조절공(7a)(8a)이 중첩되어 이루는 개구의 직경은 약 0.1mm인 것이 바람직하며, 개구의 직경이 약 0.1mm일때 본 출원인의 실험결과 광량조절수단으로서의 네오디뮴필터(10)를 사용할 경우 사용하지 않는 경우보다 광량제어 범위가 약 9배 정도 넓어지는 것을 알 수 있었으며, 본 장치를 사용하면 0룩스(Lux)에서 180,000룩스(Lux)까지의 조도 변화 즉, 빛이 없을때부터 태양광의 최고 밝을때 보다도 더 높은 빛에서도 고체촬상소자에 피사체틀 투사시킬 수 있게 된다.Here, the diameter of the opening formed by the overlapping of the first and second light control holes 7a and 8a is preferably about 0.1 mm, and when the diameter of the opening is about 0.1 mm, the results of the experiment of the applicant as light quantity adjusting means. When the neodymium filter 10 is used, the light intensity control range is about 9 times wider than when the neodymium filter 10 is not used. When the device is used, the intensity of illumination from 0 lux to 180,000 lux is changed. It is possible to project the subject onto a solid state image pickup device even in the absence of light, even at a higher light level than the brightest sunlight.

이상에서 설명한 바와 같이 본 발명 소형촬상기기의 조리개장치는 떨어지는 물방울 형상의 제1광조절공과 이와 반대방향으로 형성된 제2광조절공이 상호 중첩되면서 광량 변화에 민감하게 대응할 수 있도록 되어 있으므로 광량제어 범위가 넓게되고, 제1광량조절판에 형성된 제1광조절공의 꼬리부분에 네오디뮴필터가 설치되어 있으므로 고휘도시에 광통과 부위를 0.1mm 정도로 줄일 수 있게 되어 종래와 같이 태양광과 같은 고휘도시에 발생되던 화면의 번짐현상이 극소화 되게 되며, 제1, 제2광조절공이 작으므로 전체적인 크기를 줄일 수 있게 되어 소형 촬상기기에 적합한 등의 이점이 있다.As described above, the aperture device of the compact photographing apparatus of the present invention is capable of responding to the change in the amount of light while overlapping the first light control hole having a drop shape and the second light control hole formed in the opposite direction, so that the light quantity control range is Since the neodymium filter is installed in the tail portion of the first light control hole formed in the first light control plate, the light passing portion can be reduced to about 0.1 mm in high brightness, which was generated in high brightness such as sunlight. The blurring phenomenon of the screen is minimized, and since the first and second light adjusting holes are small, the overall size can be reduced, which is suitable for a small imaging device.

Claims (2)

고체촬상소자(2) 및 복수개의 렌즈(2)가 동축상으로 내장된 본체(1)에 설치되며 그 회전축에 레버(5)가 설치된 메터(4)와; 상기 본체(1)의 전면에 설치되며 한쌍의 원호형 가이드장공(6a)(6b)이 상호 대향되도록 형성된 가이드판(6)과; 상기 가이드판(6)에 상호 중첩된 상태로 상호 반대방향으로 이동 가능하게 설치되며, 상기 원호형 가이드장공(6a)(6b)을 각각 관통하는 핀(6)(6')에 의해 상기 레버(5)의 양단과 그 일단이 각각 회동 가능하게 연결되고, 몸체에 떨어지는 물방울형상 및 이와 반대형상의 제2, 제1광조절공(8a)(7a)이 각각 형성된 제2, 제1광량조절판(8)(7)과; 상기 제1광량조절판(7)에 형성된 제1광조절공(7a)의 꼬리부분과 중첩되게 설치되어 고휘도에서 광량을 줄이는 광량조절수단을 구비하여 구성된 것을 특징으로 하는 소형촬상기기의 조리개장치.A meter (4) installed in the main body (1) in which the solid state image pickup device (2) and the plurality of lenses (2) are coaxially embedded, and the lever (5) installed on the rotation shaft thereof; A guide plate 6 installed on the front surface of the main body 1 and formed with a pair of arc-shaped guide holes 6a and 6b facing each other; The lever (6) (6 ') is installed so as to be movable in the opposite direction to each other in the state overlapping with the guide plate 6, respectively penetrating through the arc-shaped guide hole (6a) (6b) 5 and 2, the first light amount control plate (2) and the one end thereof are rotatably connected to each other, and the water droplets falling on the body and the second and first light control holes 8a and 7a of the opposite shape are respectively formed. 8) (7); Aperture device of a compact photographic camera, characterized in that it is provided to overlap with the tail portion of the first light control hole (7a) formed in the first light control plate (7) to reduce the amount of light at high brightness. 제1항에 있어서, 상기 광량조절수단이, 네오디뮴필터(10)인 것을 특징으로 하는 소형촬상기기의 조리개장치.The aperture device according to claim 1, wherein the light quantity adjusting means is a neodymium filter (10).
KR1019920022414A 1992-11-26 1992-11-26 Iris for small image pick-up device KR970003031B1 (en)

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KR1019920022414A KR970003031B1 (en) 1992-11-26 1992-11-26 Iris for small image pick-up device

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Application Number Priority Date Filing Date Title
KR1019920022414A KR970003031B1 (en) 1992-11-26 1992-11-26 Iris for small image pick-up device

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KR940013155A KR940013155A (en) 1994-06-25
KR970003031B1 true KR970003031B1 (en) 1997-03-13

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