KR970048868A - Passive Auto Focusing Device with Variable Range - Google Patents

Passive Auto Focusing Device with Variable Range Download PDF

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Publication number
KR970048868A
KR970048868A KR1019950061844A KR19950061844A KR970048868A KR 970048868 A KR970048868 A KR 970048868A KR 1019950061844 A KR1019950061844 A KR 1019950061844A KR 19950061844 A KR19950061844 A KR 19950061844A KR 970048868 A KR970048868 A KR 970048868A
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South Korea
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subject
ranging
luminance
range
measuring
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KR1019950061844A
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Korean (ko)
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KR100244951B1 (en
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구본정
정현우
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이대원
삼성항공산업 주식회사
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Focusing (AREA)
  • Studio Devices (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

피사체 휘도량을 측정하는 휘도 측광 수단과; 피사체 거리를 측정하는 측거 수단과; 측정되는 피사체 휘도량에 따라 상기 측거 수단의 측거 영역을 가변시켜 구동하고, 측거 수단의 구동된 측거 영역만을 통하여 감지되는 신호에 따라 피사체 거리를 산출하는 촬영 제어 수단과; 렌즈를 해당 위치로 이동시켜 초점 조절을 수행하는 렌지 구동 수단을 포함하여 이루어지는 측거 영역이 가변되는 패시브 초점 조절 장치는, 패시브 자동 초점 조절 장치를 사용하는 카메라에 있어서, 피사체 휘도량이 어두운 경우에는 측거 센서의 중심부로 입사되는 피살체 빛만을 감지하여 그에 따라 피사체 거리를 측정함으로써, 피사체 휘도량이 어두운 경우 측거 센서의 주변부로 입사되는 미약한 피사체 빛에 따른 측거 오류를 방지하여, 측거의 정확도를 향상시켜 선명한 사진을 촬영할 수 있다.Luminance metering means for measuring an amount of luminance of the subject; Ranging means for measuring a subject distance; Photographing control means for varying the driving range of the ranging means according to the measured luminance of the subject and driving the distance, and calculating a subject distance according to a signal detected only through the driven range of the ranging means; The passive focusing device having a variable focusing area including a lens driving means for moving the lens to a corresponding position and performing focusing adjustment is a camera using a passive autofocusing device. By detecting only the target light incident to the center of the camera and measuring the subject distance accordingly, it is possible to prevent the ranging error due to the weak subject light incident to the periphery of the ranging sensor when the amount of luminance of the subject is dark, thereby improving the accuracy of the ranging and clearing the picture. You can shoot.

Description

측거 영역이 가변되는 패시브 자동 초점 조절 장치 및 그 방법Passive Auto Focusing Device with Variable Range

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 패시브 자동 초점 조절 장치에 있어서 측거 영역을 나타낸 상태도,1 is a state diagram showing a measurement area in a conventional passive auto focusing apparatus,

제2도는 이 발명의 실싱에 따른 측거 영역이 가변되는 패시브 자동 초점 조절 장치의 구성 블록도.2 is a block diagram illustrating a passive auto focusing device in which a range of measurement area according to the present invention is varied.

Claims (9)

피사체 휘도량을 측정하는 휘도 측광 수단과; 피사체 거리를 측정하는 측거 수단과; 측정되는 피사체 휘도량에 따라 상기 측거 수단의 측거 영역을 가변시켜 구동하고, 측거 수단의 구동된 측거 영역만을 통하여 감지되는 신호에 따라 피사체 거리를 산출하는 촬영 제어 수단과; 렌즈를 해당 위치로 이동시켜 초점 조절을 수행하는 렌즈 구동 수단을 포함하여 이루어지는 것을 특징으로 하는 측거 영역이 가변되는 패시브 초점 조절 장치.Luminance metering means for measuring an amount of luminance of the subject; Ranging means for measuring a subject distance; Photographing control means for varying the driving range of the ranging means according to the measured luminance of the subject and driving the distance, and calculating a subject distance according to a signal detected only through the driven range of the ranging means; And a lens driving means for moving the lens to a corresponding position to perform focus adjustment. 제1항에 있어서, 상기한 측거 수단은, 피사체 상에 해당하는 빛에 따라 구동되어 해당하는 전기적인 신호를 출력하는 다수개의 측거 센서로 이루어지는 것을 특징으로 하는 측거 영역이 가변되는 패시브 초점 조절 장치.2. The passive focus adjusting apparatus of claim 1, wherein the ranging means comprises a plurality of ranging sensors that are driven by light corresponding to light on a subject to output corresponding electrical signals. 제1항에 있어서, 상기한 촬영 제어 수단은, 측정되는 피사체 휘도량이 측거가 불가능한 저휘도인 경우에, 측거 수단의 측거 영역중 좌우 주변 영역에 해당하는 측거 센서는 구동시키지 않고, 중심부에 해당하는 측거 센서만을 구동시켜 피사체 상에 해당하는 측거 데이터를 측정하는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 장치.The method according to claim 1, wherein the photographing control means corresponds to a central portion without driving the range sensor corresponding to the left and right peripheral regions of the ranging means of the ranging means when the measured object luminance amount is low luminance that cannot be measured. A passive auto focusing device with a variable range of range, characterized in that for measuring the range data on the subject by driving only the range sensor. 제1항에 있어서, 상기한 촬영 제어 수단은, 측정되는 피사체 휘도량이 측거가 가능한 고휘도인 경우에, 측거 수단의 측거 영역에 해당하는 모든 측거 센서를 구동시켜 피사체 상에 해당하는 측거 데이터를 측정하는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 장치.The method according to claim 1, wherein the photographing control means drives all of the range sensors corresponding to the range of the range of the range means to measure the range of data on the subject when the amount of luminance measured is high brightness. Passive auto focusing device is characterized in that the ranging area is variable. 제1항에 있어서, 피사체 휘도량이 측거가 불가능한 저휘도인 경우에 일정량의 광을 피사체로 발사시켜 휘도량을 보충하는 보조 발광 수단을 더 포함하여 이루어지는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 장치.2. The passive autofocus according to claim 1, further comprising auxiliary light emitting means for emitting a predetermined amount of light to the subject to supplement the luminance when the luminance of the subject is low in luminance. Regulator. 피사체 휘도량을 측정하는 단계와; 측정되는 피사체 휘도량에 따라 측거 수단의 측거 영역을 가변시켜 구동하고, 구동된 측거 영역을 통하여 측거 데이터를 측정하는 단계와; 상기에서 측정되는 측거 데이터에 따라 피사체 거리를 산출하고, 산출된 치사체 거리에 따른 AF존으로 렌즈를 이동시켜 초점 조절을 수행하는 단계를 포함하여 이루어지는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 장치.Measuring a subject brightness amount; Driving the ranging area of the ranging means in accordance with the measured luminance of the subject, and measuring the ranging data through the driven ranging area; Calculating a subject distance according to the measurement data measured in the above, and performing focus adjustment by moving a lens to an AF zone according to the calculated distance of the dead body. Regulating device. 제6항에 있어서, 피사체 휘도량에 따라 측거 데이터를 측정하는 단계에 있어서, 측정되는 피사체 휘도량이 측거가 불가능한 저휘도인 경우에, 측거 수단의 측거 영역중 좌우 주변 영역에 해당하는 측거 센서는 구동시키지 않고, 중심부에 해당하는 측거 센서만을 구동시켜 피사체 상에 해당하는 측거 데이터를 측정하는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 방법.The method of claim 6, wherein in the step of measuring the ranging data according to the amount of luminance of the subject, when the measured amount of luminance of the subject is low luminance that is impossible to measure, the ranging sensor corresponding to the left and right peripheral regions of the ranging region of the measuring means is driven. Passive auto-focus control method in which the ranging area is variable, characterized in that to measure the ranging data on the subject by driving only the ranging sensor corresponding to the center. 제6항에 있어서, 피사체 휘도량에 따라 측거 데이터를 측정하는 단계에 있어서, 측정되는 피사체 휘도량이 측거가 가능한 고휘도인 경우에, 측거수단의 측거 영역에 해당하는 모든 측거 센서를 구동시켜 피사체 상에 해당하는 측거 데이터를 측정하는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 방법.The method of claim 6, wherein in the step of measuring the measurement data according to the amount of luminance of the subject, when the measured amount of luminance of the subject is high luminance capable of measuring, driving all the ranging sensors corresponding to the range of the ranging means to drive the image on the subject. Passive auto-focus control method of varying the measurement range, characterized in that for measuring the corresponding measurement data. 제6항에 있어서, 피사체 휘도량이 측거가 불가능한 저휘도인 경우에 일정량의 광을 피사체로 발사시켜 휘도량을 보충하는 단계를 더 포함하여 이루어지는 것을 특징으로 하는 측거 영역이 가변되는 패시브 자동 초점 조절 방법.7. The method of claim 6, further comprising the step of firing a predetermined amount of light to the subject to compensate for the luminance when the luminance is low. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950061844A 1995-12-28 1995-12-28 Passive auto-focus control apparatus and method having variableness to area of distance measuring KR100244951B1 (en)

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KR1019950061844A KR100244951B1 (en) 1995-12-28 1995-12-28 Passive auto-focus control apparatus and method having variableness to area of distance measuring

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KR1019950061844A KR100244951B1 (en) 1995-12-28 1995-12-28 Passive auto-focus control apparatus and method having variableness to area of distance measuring

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KR100524222B1 (en) * 1997-12-31 2005-12-29 삼성테크윈 주식회사 Passive auto focusing device with adjustable area and its control method

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JP3105334B2 (en) * 1992-03-11 2000-10-30 三菱電機株式会社 Automatic focusing device
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