JPH0575717U - Autofocus camera with camera attitude detection function - Google Patents

Abstract

(57) [Summary] [Structure] A distance measuring circuit, a camera posture detection sensor and a control circuit are provided, and the distance measuring circuit measures the distance to the subject and generates center distance measuring data and peripheral distance measuring data. . Also,
The control circuit performs automatic focus adjustment according to the presence or absence of the camera attitude signal output from the camera attitude detection sensor, ignoring the camera attitude signal having the shortest distance from the center distance measurement data and the peripheral distance measurement data. [Effect] It is possible to take a clear picture of a vertically oriented subject.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an autofocus camera with a camera attitude detection function, and particularly with a camera attitude detection function equipped with a distance measuring means for measuring the distance to a subject and outputting center distance measurement data and peripheral distance measurement data. Regarding auto focus.

[0002]

[Problems to be solved by conventional techniques and devices]

 Generally, when the posture of the camera subject is changed from horizontal to vertical, the image in the image frame naturally has a vertically long vertical posture, and the distance measuring means outputs the same central distance measurement data as in the horizontal posture. .. However, one peripheral distance measurement data, for example, the right peripheral distance measurement data is at the upper part of the image frame, and the other peripheral distance measurement data, that is, the left peripheral distance measurement data is at the lower part of the image frame. For this reason, the central measurement point measures the distance of the main subject, but the measurement point below measures the distance to the ground in front, the table, etc., so the distances to the main object are averaged, or the ground in front The distance is set to etc. Therefore, a photograph taken in a vertical position has a drawback that the main subject becomes unclear.

[0003]

【Purpose】

 An object of the present invention is to provide an autofocus camera with a camera attitude detection function, which can take a clear picture of a vertically oriented object when the camera attitude detection sensor outputs a camera attitude signal.

[0004]

[Means for Solving the Problems]

 The autofocus camera with camera posture detection function according to the present invention measures the distance to the object and outputs the distance measurement data for the central area and the distance measurement data for the peripheral area and the camera attitude signal for detecting the attitude of the camera. And a control means for setting the distance by ignoring the camera attitude signal having the shortest distance from the central distance measurement data and the peripheral distance measurement data according to the presence or absence of the camera attitude signal. There is.

[0005]

[Action]

 The distance measuring circuit measures the distance to the subject and generates central distance measuring data and peripheral distance measuring data. In addition, a camera attitude detection sensor that outputs a camera attitude signal is provided, and the control circuit ignores peripheral distance measurement data and performs automatic focus adjustment according to the presence or absence of the camera attitude signal.

[0006]

【Example】

 An embodiment of an autofocus camera with a camera posture detecting function according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, an autofocus camera with a camera posture detection function according to the present invention includes a camera posture sensor 1, a distance measuring integrated circuit 6 (hereinafter referred to as AFIC), a posture signal receiving circuit 3, and a posture signal. The receiving circuit 3 and the release button 10 are connected to a microprocessor 20 (hereinafter referred to as a CPU) and a lens barrel 12 that operates under the control of the CPU 20 via a shutter / lens driving IC 11. The AFIC 6 is a left light emitting diode IR ₁ , A central light emitting diode IR ₂ and a left light emitting diode IR ₃ are provided for a multi-point projection element 7, a position detection element 8 (hereinafter referred to as PSD), and a multi-point projection element 7, an AF interface 9 to which the PSD 8 is connected. It consists of. The light projected from the left light emitting diode IR ₁ , the central light emitting diode IR ₂ and the left light emitting diode IR ₃ to the subject through the light projecting lens 6a is reflected by the subject and is applied to the PSD 8 from the light receiving lens 6b.

The pendulum 2 of the camera attitude sensor 1 is supported by the pendulum center 2b, and the pendulum contact 2a provided at the apex of the pendulum 2 is closed to the central contact 1b to which the central attitude signal terminal T ₁ is connected. If so, the central attitude signal f ₁ is transmitted. Further, when the right contact 1c the right attitude signal terminal T ₂ is connected is closed and sends a right attitude signal f _2, the left contact 1a to the left orientation signal terminal T ₃ has been connected is closed And a left attitude signal f ₃ are transmitted.

[0009] When photographing an automatic focus camera with a camera attitude detection function of the above configuration, the central attitude signal f ₁ in Shikensu the presence or absence of the right attitude signal f ₂ and left attitude signal f ₃ is detected, the right attitude signal f ₂ If the left attitude signal f ₃ is not detected, the left light emitting diode IR ₁ , the center light emitting diode IR ₂ and the left light emitting diode IR ₃ are emitted at, and the distance measurement and automatic focus adjustment are performed by the sequence of. When it is determined that the central attitude signal f ₁ is absent, the right attitude signal f ₂ and the left attitude signal f _{3 are} present in the sequence of, the central light emitting diode IR ₂ is emitted in the sequence of.

The camera attitude sensor 1 including the pendulum 2 in the above-described embodiment may be composed of a water silver contact attitude sensor 4 shown in FIG. The mercury contact attitude sensor 4 sends out a central attitude signal f ₁ when the central contact 4b to which the central attitude signal terminal T ₁ is connected is immersed in mercury. Further, when the right contact 4c of the right attitude signal terminal T ₂ is connected is immersed in mercury sends a right attitude signal f _2, the left contact 4c of the left attitude signal terminal T ₃ is connected is immersed in mercury And a left attitude signal f ₃ are transmitted. Such a camera attitude sensor can also be configured by a member such as a photocoupler and a magnet. Further, although the above embodiment has been described with respect to the active type which performs distance measurement by light projection and light reception, the same concept can be applied to a passive type distance measurement device. It is also possible to provide only the pendulum contact 2a provided at the apex of the camera attitude sensor 1 and apply the principle that the central attitude signal f ₁ is turned off when the pendulum contact 2a is separated from the central contact 1b. Further, only the provided right contact 1c and the right contact 1c, when the right attitude signal f ₂ or Hidarisugata actuating signal f ₃ is output, the central attitude signal f ₁ may be regarded as has fallen off.

[0011]

[Effect of the device]

 As is clear from the above embodiments, according to the autofocus camera with the camera posture detection function of the present invention, the camera posture detection sensor is provided by providing the camera posture detection member that detects the camera posture and outputs the camera posture signal. When the camera outputs a camera posture signal, it has the effect of taking clear pictures of vertical subjects.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an autofocus camera with a camera posture detection function of the present invention.

FIG. 2 is a flowchart of an autofocus camera with a camera posture detection function of the present invention.

FIG. 3 is a block diagram of a mercury contact attitude sensor used in the autofocus camera with a camera attitude detection function of the present invention.

[Explanation of symbols]

 1 camera attitude sensor (camera attitude detection means) 6 AFIC (distance measuring means) 20 CPU (control means)

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Claims (1)

[Scope of utility model registration request] 1. A distance measuring means for measuring a distance to an object and outputting center distance measuring data and peripheral distance measuring data, and camera attitude detecting means for detecting a camera attitude and outputting a camera attitude signal. An autofocus camera with a camera posture detection function, comprising: a control unit that ignores peripheral distance measurement data and sets a distance according to the presence or absence of the camera posture signal.