JP3120955B2 - Distance measuring device - Google Patents
Distance measuring deviceInfo
- Publication number
- JP3120955B2 JP3120955B2 JP14306995A JP14306995A JP3120955B2 JP 3120955 B2 JP3120955 B2 JP 3120955B2 JP 14306995 A JP14306995 A JP 14306995A JP 14306995 A JP14306995 A JP 14306995A JP 3120955 B2 JP3120955 B2 JP 3120955B2
- Authority
- JP
- Japan
- Prior art keywords
- distance
- distance measurement
- distance measuring
- measuring
- shooting mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Measurement Of Optical Distance (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被写体までの距離を自
動的に計測するカメラの測距装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera distance measuring apparatus for automatically measuring a distance to a subject.
【０００２】[0002]
【従来の技術】このようなカメラの測距装置としては、
ＬＥＤなどの測距用光源を持ち、受光素子との組み合わ
せで被写体までの距離を計測する三角測量タイプのアク
ティブ方式が知られている。2. Description of the Related Art As such a distance measuring device for a camera,
An active method of a triangulation type that has a distance measuring light source such as an LED and measures a distance to a subject in combination with a light receiving element is known.
【０００３】また、別の方式の測距装置として、測距用
の光源を持たず、被写体で反射される自然光を２系統の
光学系で受光し、各光学系で得られた２つの光学像の位
相差等により、被写体までの距離を計測する三角測量タ
イプのパッシブ方式が知られている。Further, as another type of distance measuring device, there is no distance measuring light source, natural light reflected by a subject is received by two optical systems, and two optical images obtained by each optical system are obtained. There is known a triangulation-type passive method for measuring a distance to a subject based on the phase difference of the object.
【０００４】[0004]
【発明が解決しようとする課題】アクティブ方式の測距
装置では、被写体に向けて自ら光を投光し、その反射光
を受光して測距を行う方式であるため、外界輝度によっ
て、測距に費やされる時間も大きく変動することはな
い。In the active type distance measuring apparatus, the distance is measured by the external luminance because the distance is measured by projecting light toward a subject and receiving the reflected light. The amount of time spent is not significantly changed.
【０００５】しかし、パッシブ方式の測距装置のうち、
被写体で反射される自然光をフォトダイオードで受光し
て測距を行うタイプでは、被写体像が比較的明るい場合
には、比較的短時間で測距が終了するが、被写体像が暗
い場合には、測距にかかる時間が長大する傾向にある。
このように、フォトダイオードを使用したパッシブ方式
の測距装置では、測距結果が被写体輝度に大きく依存す
る傾向があり、被写体輝度によって測距時間が大きく変
動するという欠点があった。特に、速いレスポンスが要
求される連写モードでは、測距時間が長い場合には、実
質的に連写が不可能になるという実用上の欠点があっ
た。However, among the passive type distance measuring devices,
In the type that measures the distance by receiving the natural light reflected by the object with the photodiode, the distance measurement ends in a relatively short time when the object image is relatively bright, but when the object image is dark, The time required for distance measurement tends to be long.
As described above, the passive type distance measuring device using the photodiode has a disadvantage that the distance measurement result tends to largely depend on the subject luminance, and the distance measuring time greatly varies depending on the subject luminance. In particular, in a continuous shooting mode that requires a fast response, there is a practical disadvantage that continuous shooting becomes practically impossible when the distance measurement time is long.
【０００６】本発明は、このような課題を解決すべくな
されたものであり、その目的は、撮影モードして、連写
モードが選択された場合にも、好適に測距を実施し得る
測距装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a measurement method capable of suitably performing a distance measurement even when a continuous shooting mode is selected in a shooting mode. A distance device is provided.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明にかかる
測距装置は、被写体に向けて測距光を投光し、その反射
光の集光位置に基づき、この被写体までの距離を計測す
るアクティブ方式の第１測距手段と、被写体で反射され
る自然光を２系統の光学系で受光し、この各光学系で得
られた２つの光学像に基づき、被写体までの距離を計測
するパッシブ方式の第２測距手段と、第１測距手段及び
第２測距手段から得られる測距結果のうち、いずれか一
方の測距結果を選択し出力する測距値選択手段とを備え
ており、この測距値選択手段は、撮影モードが連写モー
ドであるか否かを判断する第１手段と、第１手段で連写
モードと判断された場合に、前記第２測距手段の測距処
理を禁止させる第２手段とを備えて構成する。Accordingly, a distance measuring apparatus according to the present invention projects distance measuring light toward a subject, and measures the distance to the subject based on the condensing position of the reflected light. A first distance measuring means of an active system, and a passive system of receiving natural light reflected by a subject by two optical systems and measuring a distance to the subject based on two optical images obtained by the respective optical systems. And distance measurement value selecting means for selecting and outputting any one of the distance measurement results obtained from the first distance measurement means and the second distance measurement means. The distance measuring value selecting means includes a first means for determining whether or not the shooting mode is a continuous shooting mode, and a measuring means for the second distance measuring means when the first means determines the continuous shooting mode. And second means for prohibiting the distance processing.
【０００８】なお、連写モードとは、レリーズスイッチ
が押下されている期間、シャッターの開閉動作が連続し
て行われるモードをいう。The continuous shooting mode refers to a mode in which the shutter is continuously opened and closed while the release switch is pressed.
【０００９】[0009]
【作用】本発明の測距装置は、アクティブ方式の第１測
距手段とパッシブ方式の第２測距手段の２種類の測距手
段を備えており、この双方で測距を実施する。得られた
測距結果を測距値選択手段で選択するが、第１手段によ
って、連写モードが設定されたことを検知した場合に
は、第２手段によって、第２測距手段の測距処理が禁止
される。これにより、外界輝度等に影響されずに短時間
に測距結果が得られるアクティブ方式の測距のみが実施
される。The distance measuring apparatus of the present invention has two types of distance measuring means, namely, an active type first distance measuring means and a passive type second distance measuring means, and performs distance measurement with both of them. The obtained distance measurement result is selected by the distance measurement value selection means. When the first means detects that the continuous shooting mode has been set, the second means detects the distance by the second distance measurement means. Processing is prohibited. As a result, only the active distance measurement that can obtain the distance measurement result in a short time without being affected by the external luminance or the like is performed.
【００１０】[0010]
【実施例】以下、本発明の実施例を添付図面に基づいて
説明する。本実施例にかかる測距装置の概略的な構成を
図１に示す。この測距装置は、三角測量タイプのアクテ
ィブ方式の測距を実施するアクティブ測距部Ａ、及び、
同じく三角測量タイプのパッシブ方式の測距を実施する
パッシブ測距部Ｐを備えると共に、外界輝度を検出する
輝度検出部Ｌ及び測距値選択回路４０を備えている。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a schematic configuration of a distance measuring apparatus according to the present embodiment. The distance measuring device includes an active distance measuring unit A that performs a triangulation type active distance measuring, and
Similarly, a passive distance measuring unit P for performing a triangulation type passive distance measurement is provided, and a luminance detecting unit L for detecting external luminance and a distance value selection circuit 40 are provided.
【００１１】アクティブ測距部Ａは、被写体に向かって
測距光を投光するＬＥＤ等で構成する投光部１１と、そ
の反射光を受光するＰＳＤ等で構成する受光部１２とを
備えており（図２参照）、さらに、この投光・受光結果
を基に被写体までの距離を演算する測距演算回路１３を
備えている。なお、このアクティブ測距部Ａで得られた
測距値は、測距値選択回路４０に与えられる。The active distance measuring section A includes a light projecting section 11 composed of an LED or the like for projecting distance measuring light toward a subject, and a light receiving section 12 composed of a PSD or the like for receiving the reflected light. It has a distance measuring circuit 13 for calculating the distance to the subject based on the result of light projection and light reception (see FIG. 2). The distance measurement value obtained by the active distance measurement unit A is provided to the distance measurement value selection circuit 40.
【００１２】パッシブ測距部Ｐは、被写体からの自然光
の反射光を２系統の光学系で受光する右受光部２１と左
受光部２２とを備えており（図２参照）、さらにこれら
を介して得られる２つの光学像を受光するＣＣＤ（光位
置検出装置：図示せず）、及び、その結果をもとに被写
体までの距離を演算する測距演算回路２３などを備えて
いる。なお、このパッシブ測距部Ｐで得られた測距値
も、測距値選択回路４０に与えられる。The passive distance measuring section P has a right light receiving section 21 and a left light receiving section 22 for receiving reflected light of natural light from a subject by two optical systems (see FIG. 2), and further through these. (Optical position detecting device: not shown) for receiving two optical images obtained by the above-mentioned operation, and a distance measuring circuit 23 for calculating the distance to the subject based on the results. The distance measurement value obtained by the passive distance measurement unit P is also provided to the distance measurement value selection circuit 40.
【００１３】輝度検出部Ｌは、図３におけるＡＥ部（自
動露出部）の構成を利用しており、露出制御用の受光素
子、例えばＣｄＳなどで構成する受光部３１、その受光
結果を基に外界輝度を演算する測光演算回路３２などで
構成している。The luminance detecting section L utilizes the configuration of the AE section (automatic exposure section) in FIG. 3, and is based on a light receiving section 31 composed of a light receiving element for exposure control, for example, CdS, and the light receiving result. It is composed of a photometric calculation circuit 32 for calculating the external luminance.
【００１４】測距値選択回路４０は、この輝度検出部Ｌ
で求められた外界輝度などを基に、各測距部Ａ，Ｐで測
定された測距値のうちの一方を選択して出力する回路で
ある。The distance measurement value selection circuit 40 is provided with the luminance detection section L
Is a circuit that selects and outputs one of the distance measurement values measured by each of the distance measurement units A and P based on the external luminance obtained in step S1.
【００１５】なお、図２に本実施例にかかる測距装置を
備えたカメラの外観を示し、また、図３にその内部機構
の概略を示す。図１で示した測距演算回路１３、２３、
測光演算回路３２及び測距値選択回路４０は、図３に示
すＣＰＵ内に構成される。FIG. 2 shows an external view of a camera provided with the distance measuring apparatus according to the present embodiment, and FIG. 3 shows an outline of an internal mechanism thereof. The distance calculation circuits 13, 23 shown in FIG.
The photometry calculation circuit 32 and the distance measurement value selection circuit 40 are configured in the CPU shown in FIG.
【００１６】ここで、この測距装置の動作を図４に基づ
いて説明する。まず、被写体にカメラを向けてレリーズ
スイッチ（図３参照）がＯＮされると（＃１００）、電
源電圧が読み込まれて、電圧値のチェックが行われる
（＃１０２、＃１０４）。ここで、読み込まれた電圧値
がしきい値に満たない場合には（＃１０４で「Ｎ
Ｏ」）、撮影処理が不可能となるため、その旨を使用者
に表示や警告音等で知らせる等、所定のＮＧ処置に移行
する（＃１０６）。Here, the operation of the distance measuring apparatus will be described with reference to FIG. First, when the camera is pointed at the subject and the release switch (see FIG. 3) is turned on (# 100), the power supply voltage is read and the voltage value is checked (# 102, # 104). Here, if the read voltage value is less than the threshold value ("N" in # 104)
O "), since the photographing process becomes impossible, the process is shifted to a predetermined NG treatment, for example, by notifying the user with a display or a warning sound (# 106).
【００１７】読み込まれた電圧値がしきい値をクリアし
ている場合には（＃１０４で「Ｙｅｓ」）、輝度検出部
Ｌによって外界輝度を検出する測光処理が行われると共
に（＃１０８）、アクティブ測距部Ａにおいてアクティ
ブ方式の測距が行われる（＃１１０）。If the read voltage value has cleared the threshold value ("Yes" in # 104), the luminance detecting section L performs photometric processing for detecting the external luminance (# 108). Active distance measurement is performed in the active distance measurement unit A (# 110).
【００１８】また、同時に、図３における連写モードス
イッチがオンされているか否かが判断される（＃１１
２）。このとき、連写モードスイッチがオンされている
ことを検知した場合（＃１１２で「Ｙｅｓ」）、ＣＰＵ
の制御の下、パッシブ測距部Ｐにおける測距処置が禁止
される。これは、パッシブ測距部Ｐの測距時間が外界輝
度に依存して変化する特性があり、外界輝度が低い場合
等には距時間が長くなるおそれがある。一方、アクティ
ブ方式では、被写体に光を投光しその反射光を受光する
ことで測距を行うため、測距時間は外界輝度に影響され
難く一定である。そこで、速いレスポンスが要求される
連写モードでは、パッシブ測距部Ｐによる測距は実行せ
ず、アクティブ測距部Ａのみによって測距を実行するも
のである。At the same time, it is determined whether or not the continuous shooting mode switch in FIG. 3 is turned on (# 11).
2). At this time, when it is detected that the continuous shooting mode switch is turned on (“Yes” in # 112), the CPU
Under the above control, the distance measuring process in the passive distance measuring section P is prohibited. This has a characteristic that the distance measurement time of the passive distance measurement unit P changes depending on the external luminance, and the distance time may be long when the external luminance is low. On the other hand, in the active method, the distance is measured by projecting light onto the subject and receiving the reflected light, so that the distance measuring time is constant without being influenced by the external luminance. Therefore, in the continuous shooting mode in which a fast response is required, the distance measurement is not performed by the passive distance measuring unit P, but is performed only by the active distance measuring unit A.
【００１９】このように、連写モードであることが検知
された場合には、アクティブ測距部Ａの測距結果のみが
測距値選択回路４０に与えられ、測距値選択回路４０で
は、この測距値（アクティブデータ）を測距データとし
て出力する（＃１１４）。そして、この設定された測距
データを基に撮影レンズをセットするなど（＃１１
６）、以降の撮影処理はこの測距値をもとに実行される
（＃１１８）。As described above, when the continuous shooting mode is detected, only the distance measurement result of the active distance measurement unit A is given to the distance measurement value selection circuit 40. This distance measurement value (active data) is output as distance measurement data (# 114). Then, the photographing lens is set based on the set distance measurement data (# 11).
6) The subsequent photographing processing is executed based on this distance measurement value (# 118).
【００２０】一方、連写モードスイッチがオフであるこ
とが検知された場合（＃１１２で「Ｎｏ」）、パッシブ
測距部Ｐにおいてパッシブ方式の測距が実行され（＃１
２０）、各測距部Ａ、Ｐにおける測距結果は、ともに測
距演算回路１３、２３を経て測距値選択回路４０に与え
られる。On the other hand, when it is detected that the continuous shooting mode switch is turned off ("No" in # 112), the passive distance measuring section P performs passive distance measurement (# 1).
20), the distance measurement results in each of the distance measurement units A and P are supplied to the distance measurement value selection circuit 40 via the distance measurement calculation circuits 13 and 23.
【００２１】次に、測距値選択回路４０では、輝度検出
部Ｌによって得られた外界輝度が、Ｌｖ１４以上の高輝
度レベルか否かが判断される（＃１２２）。外界輝度が
高い場合、アクティブ方式では受光部１２が測距光の反
射光を良好に受光できなくなり、測距精度が低下するお
それがある。一方、パッシブ方式では被写体で反射され
る自然光の光量が増大するため、測距値の信頼性は高
い。このため、輝度検出部Ｌにより得られた外界輝度が
Ｌｖ１４以上の場合（＃１２２で「Ｎｏ」）、測距値選
択回路４０は、パッシブ測距部Ｐの測距値（パッシブデ
ータ）を選択し測距データとして出力する（＃１２
４）。そして、この設定された測距データを基に撮影レ
ンズをセットするなど（＃１１６）、以降の撮影処理
は、測距値選択回路４０から出力されるこの測距値をも
とに実行される（＃１１８）。Next, the distance measurement value selection circuit 40 determines whether or not the external luminance obtained by the luminance detecting section L is a high luminance level equal to or higher than Lv14 (# 122). In the case where the external luminance is high, in the active method, the light receiving unit 12 cannot receive the reflected light of the distance measurement light satisfactorily, and the distance measurement accuracy may be reduced. On the other hand, in the passive method, since the amount of natural light reflected by the subject increases, the reliability of the distance measurement value is high. Therefore, when the external luminance obtained by the luminance detection unit L is equal to or higher than Lv14 (“No” in # 122), the distance measurement value selection circuit 40 selects the distance measurement value (passive data) of the passive distance measurement unit P. And output as distance measurement data (# 12
4). Then, for example, a photographing lens is set based on the set distance measurement data (# 116), the subsequent photographing processing is executed based on the distance measurement value output from the distance measurement value selection circuit 40. (# 118).
【００２２】一方、外界輝度がＬｖ１４以下の場合には
（＃１２２で「Ｙｅｓ」）、さらに外界輝度がＬｖ３以
下の低い輝度が否かが判断される（＃１２６）。外界輝
度が低い場合、パッシブ方式では自然光の反射光量が少
なく信頼性に欠けるが、アクティブ方式では受光部１２
において測距光の反射光が良好に検出されるため測距値
の信頼性は高い。このため、輝度検出部Ｌにより得られ
た外界輝度がＬｖ３以下の場合（＃１２６で「Ｎ
ｏ」）、測距値選択回路４０はアクティブ測距部Ａの測
距値（アクティブデータ）を選択し、測距データとして
出力する（＃１１４）。そして、以降の撮影処理は、測
距値選択回路４０から出力されるこの測距値をもとに実
行される（＃１１６、＃１１８）。On the other hand, if the external luminance is lower than Lv14 ("Yes" in # 122), it is further determined whether or not the external luminance is lower than Lv3 (# 126). When the external luminance is low, the passive system has a small amount of reflected natural light and lacks reliability.
In this case, the reflected light of the distance measurement light is detected favorably, so that the reliability of the distance measurement value is high. Therefore, when the external luminance obtained by the luminance detection unit L is equal to or lower than Lv3 (“N” in # 126).
o "), the ranging value selection circuit 40 selects the ranging value (active data) of the active ranging unit A and outputs it as ranging data (# 114). Then, the subsequent photographing process is executed based on the distance measurement value output from the distance measurement value selection circuit 40 (# 116, # 118).
【００２３】測距値選択回路４０は、このように外界輝
度がＬｖ１４以上の高輝度レベルか、或いはＬｖ３以下
の低輝度レベルの場合には、それそれ前述したように直
ちに一方の測距値を選択するが、輝度レベルが３＜Ｌｖ
＜１４の中間輝度レベルの場合には、さらに以下の値に
基づいて判断する。When the external luminance is a high luminance level equal to or higher than Lv14 or a low luminance level equal to or lower than Lv3, the distance measurement value selection circuit 40 immediately selects one of the distance measurement values as described above. Select, but the brightness level is 3 <Lv
In the case of the intermediate luminance level of <14, the determination is further made based on the following values.
【００２４】測距値選択回路４０は、アクティブ測距部
Ａの測距結果、被写体までの距離が３ｍより近いか否か
を判断する（＃１２８）。これは、アクティブ方式が被
写体に向けて測距光を投光しその反射光を受光する方式
であるため、測距光の投光距離には限界があり、被写体
までの距離が遠いと反射光が十分に得られず、測距精度
が低下したり、測距不能となる場合も生じる。このた
め、測距値選択回路４０は、アクティブ測距部Ａの測距
結果が３ｍより近い場合には（＃１２８で「Ｙｅ
ｓ」）、測距値選択回路４０は、より信頼性の高いアク
ティブ測距部Ａの測距値（アクティブデータ）を選択
し、測距データとして出力する（＃１１４）。そして、
以降の撮影処理は、測距値選択回路４０から出力される
この測距値をもとに実行される（＃１１６、＃１１
８）。The distance measurement value selection circuit 40 determines whether or not the distance to the subject is shorter than 3 m as a result of the distance measurement by the active distance measurement section A (# 128). This is a method in which the active method emits distance measuring light toward the subject and receives the reflected light.Therefore, there is a limit to the distance that the distance measuring light can be projected. May not be obtained sufficiently, and the accuracy of distance measurement may decrease, or the distance measurement may not be possible. Therefore, when the distance measurement result of the active distance measurement unit A is closer than 3 m (“Ye in # 128”),
s "), the distance measurement value selection circuit 40 selects a more reliable distance measurement value (active data) of the active distance measurement unit A and outputs it as distance measurement data (# 114). And
Subsequent photographing processing is executed based on this distance measurement value output from the distance measurement value selection circuit 40 (# 116, # 11).
8).
【００２５】一方、アクティブ測距部Ａの測距結果が３
ｍ以遠の場合には（＃１２８で「Ｎｏ」）、パッシブ測
距部Ｐの測距値の測距値（パッシブデータ）を選択し測
距データとして出力する（＃１２４）。以降の撮影処理
は、測距値選択回路４０から出力されるこの測距値をも
とに実行される（＃１１６、＃１１８）。On the other hand, when the distance measurement result of the active distance measurement unit A is 3
If the distance is longer than m ("No" in # 128), the distance measurement value (passive data) of the distance measurement value of the passive distance measurement unit P is selected and output as distance measurement data (# 124). Subsequent photographing processing is executed based on the distance measurement value output from the distance measurement value selection circuit 40 (# 116, # 118).
【００２６】このように本実施例にかかる測距装置は、
先ず、撮影モードが連写モードか否かが判断され、連写
モードの場合には測距時間に変動が少ない、アクティブ
測距部Ａの測距値が得られ、連写モード以外の場合に
は、両測距部Ａ、Ｐで得られた測距値のうち、より信頼
性の高い測距値を選択することとができる。As described above, the distance measuring apparatus according to the present embodiment
First, it is determined whether or not the shooting mode is the continuous shooting mode. In the case of the continuous shooting mode, the distance measurement time has a small fluctuation, and the distance measurement value of the active distance measurement unit A is obtained. Can select a more reliable distance measurement value from the distance measurement values obtained by the distance measurement units A and P.
【００２７】また、上記した実施例では、外界輝度を輝
度検出部Ｌにおいて検出する例を示したが、この他に
も、輝度判定部としてＡＥ部とは別個に、輝度検出用の
受光部と測光演算回路とを設けるか、或いは、図５に示
すように、パッシブ測距部Ｐの各受光部２１、２２の受
光結果を基に、測光・測距演算回路２４によって外界輝
度を求めることも可能である。In the above-described embodiment, an example in which the external luminance is detected by the luminance detecting unit L has been described. In addition to this, a luminance detecting light receiving unit is provided separately from the AE unit as a luminance determining unit. It is also possible to provide a photometric calculation circuit or, as shown in FIG. 5, to obtain the external luminance by the photometric / ranging arithmetic circuit 24 based on the light receiving results of the respective light receiving sections 21 and 22 of the passive distance measuring section P. It is possible.
【００２８】[0028]
【発明の効果】以上説明したように、本発明にかかる測
距装置では、連写モードが設定されたことを検知する第
１手段、この検知結果を受けて第２測距手段の測距処理
を禁止する第２手段を備えたので、連写モードが設定さ
れた場合に、測距時間が長くかかる事態を回避すること
ができ、好適に連写撮影を実施させることができる。As described above, in the distance measuring apparatus according to the present invention, the first means for detecting that the continuous shooting mode is set, and the distance measuring processing of the second distance measuring means in response to the detection result. Is provided, it is possible to avoid a situation where the distance measurement time is long when the continuous shooting mode is set, and it is possible to preferably perform the continuous shooting.
【図１】本実施例にかかる測距装置の構成を概略的に示
すブロック図である。FIG. 1 is a block diagram schematically illustrating a configuration of a distance measuring apparatus according to an embodiment.
【図２】本実施例にかかる測距装置を備えたカメラを示
す正面図である。FIG. 2 is a front view showing a camera provided with the distance measuring device according to the embodiment.
【図３】カメラ内部の構成を概略的に示すブロック図で
ある。FIG. 3 is a block diagram schematically showing a configuration inside a camera.
【図４】本実施例の測距装置の動作を示すフローチャー
トである。FIG. 4 is a flowchart illustrating an operation of the distance measuring apparatus according to the embodiment.
【図５】測距装置の他の実施例を示すブロック図であ
る。FIG. 5 is a block diagram showing another embodiment of the distance measuring apparatus.
Ａ…アクティブ測距部（第１測距手段）、Ｐ…パッシブ
測距部（第２測距手段）、Ｌ…輝度検出部、４０…測距
値選択回路。A: active distance measuring section (first distance measuring means), P: passive distance measuring section (second distance measuring means), L: luminance detecting section, 40: distance measuring value selection circuit.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｇ０３Ｂ 13/36 Ｇ０３Ｂ 3/00 Ａ (56)参考文献 特開 昭63−172235（ＪＰ，Ａ) 特開 昭63−172232（ＪＰ，Ａ) 特開 平３−212631（ＪＰ，Ａ) 特開 平１−181287（ＪＰ，Ａ) 特開 昭61−272726（ＪＰ，Ａ) 特開 平８−75990（ＪＰ，Ａ) 特開 平４−136829（ＪＰ，Ａ) 特開 平１−197710（ＪＰ，Ａ) 特開 昭58−211746（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 7/28 - 7/40 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 Identification symbol FI G03B 13/36 G03B 3/00 A JP, A) JP-A-3-212631 (JP, A) JP-A-1-181287 (JP, A) JP-A-61-272726 (JP, A) JP-A-8-75990 (JP, A) JP JP-A-4-136829 (JP, A) JP-A-1-197710 (JP, A) JP-A-58-211746 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G02B 7 / 28-7/40
Claims (1)
射光の集光位置に基づき、この被写体までの距離を計測
するアクティブ方式の第１測距手段と、 前記被写体で反射される自然光を２系統の光学系で受光
し、この各光学系で得られた２つの光学像に基づき、前
記被写体までの距離を計測するパッシブ方式の第２測距
手段と、 前記第１測距手段及び第２測距手段から得られる測距結
果のうち、いずれか一方の測距結果を選択し出力する測
距値選択手段とを備えており、 前記測距値選択手段は、 撮影モードが連写モードであるか否かを判断する第１手
段と、 前記第１手段で連写モードと判断された場合に、前記第
２測距手段の測距処理を禁止させる第２手段とを備える
測距装置。An active type first distance measuring means for projecting distance measuring light toward a subject and measuring a distance to the subject based on a condensing position of the reflected light; Passive type second distance measuring means for receiving natural light with two optical systems and measuring the distance to the subject based on two optical images obtained by the respective optical systems; Means for selecting and outputting one of the distance measurement results from the means and the distance measurement result obtained from the second distance measurement means, wherein the distance measurement value selection means has a shooting mode A first means for determining whether or not the mode is a continuous shooting mode; and a second means for prohibiting a distance measuring process by the second distance measuring means when the first means determines the continuous shooting mode. Distance measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14306995A JP3120955B2 (en) | 1995-06-09 | 1995-06-09 | Distance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14306995A JP3120955B2 (en) | 1995-06-09 | 1995-06-09 | Distance measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08334679A JPH08334679A (en) | 1996-12-17 |
| JP3120955B2 true JP3120955B2 (en) | 2000-12-25 |
Family
ID=15330204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14306995A Expired - Fee Related JP3120955B2 (en) | 1995-06-09 | 1995-06-09 | Distance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3120955B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004909A (en) | 1999-06-18 | 2001-01-12 | Olympus Optical Co Ltd | Camera having automatic focusing device |
| JP2001255456A (en) * | 2000-03-13 | 2001-09-21 | Olympus Optical Co Ltd | Range-finding device |
| JP5493470B2 (en) * | 2009-05-26 | 2014-05-14 | 株式会社ニコン | Focus adjustment device and imaging device provided with the same |
-
1995
- 1995-06-09 JP JP14306995A patent/JP3120955B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08334679A (en) | 1996-12-17 |
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