JP2018025581A - Optical apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical apparatus capable of solving a problem that, when an LED light and a stroboscope provided to a lens are simultaneously turned on at macro shooting, an unexpected shadow may be generated on a pick-up image.SOLUTION: The optical apparatus equipped with both of an LED light and a stroboscope is configured so that, when detecting a macro-shooting mode is selected, the stroboscope is disabled but the LED light only is caused to operate.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an optical apparatus such as a photographing system including a lens and a camera body.

  When shooting a subject at a close distance with a camera, there may be a situation in which the subject is too close and a shadow is formed on the subject by a camera body, a lens, a photographer, etc., and good shooting cannot be performed. In such a case, an annular light is attached to the tip of the lens to take a picture. In recent years, lenses equipped with LED lights have become common due to higher brightness and lower prices of LEDs. By the way, when a strobe is mounted while using a lens having an LED light, the strobe may be issued in addition to the LED light. Even though the LED light is lit, there is a problem that the strobe has a high brightness, and an unexpected shadow can be formed on the subject.

Japanese Patent No. 3728185

  However, the prior art disclosed in the above-mentioned patent document temporarily prohibits automatic flash emission when the auto-pop-up light emitting unit is returned to the storage position by the user. Although it differs from the original purpose of the above-mentioned patent, it is temporarily effective in solving this problem from the viewpoint of preventing simultaneous lighting with the LED light. However, if the photographing frequency is high, it is necessary to store the light emitting unit popped up every time, which is troublesome.

  An object of the present invention is to provide an optical device having a function of controlling the operation of only the LED light by disabling the operation of the strobe when it is detected that the macro shooting mode is detected when both the LED light and the strobe are mounted. Is to provide equipment.

  An optical apparatus according to the present invention includes a lens, a camera, and a strobe. The lens includes an illuminating unit including a plurality of light source elements for illuminating a subject, a switching unit that switches between a macro mode and a non-macro mode lens arrangement, and the illumination. Lens control means for controlling lighting of the means, and the camera is provided with camera control means for controlling lighting of the strobe, and the illumination is performed by disabling the strobe when using the macro mode of the lens. It is characterized by using only means.

  The lens further includes a lens, a camera, and a strobe. The lens includes illumination means including a plurality of light source elements for illuminating a subject, and lens control means for controlling lighting of the illumination means. An optical device comprising a camera control means for controlling the lighting of the strobe, and the camera notifies the camera control means from the lens control means whether the macro area or the non-macro area. When in the area, the strobe is disabled and only the illumination means is used.

  According to the present invention, in an optical device composed of a lens equipped with an LED light, a camera, and a strobe, when the macro photography mode is detected, the operation of the strobe is invalidated and only the LED light is operated. An optical apparatus having a function can be provided.

1 is a block diagram of a camera system according to an embodiment of the present invention. Control flow for lighting control of strobe and lens LED lights

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Example 1]
FIG. 1 is an example of a block diagram of a camera system including an interchangeable lens unit and a camera body to which the interchangeable lens unit is detachably mounted according to the present embodiment. In FIG. 1, a camera system 100 (optical apparatus) includes an interchangeable lens unit 200 (lens) and a camera body 300 (camera).

  In the camera body 300, there are a camera mount 301, a contact block 302, a camera CPU 303 (camera control means), a control system power supply 304, a drive system power supply 305, a camera communication I / F unit 306, a lens mounting detection unit 307, and a distance measurement unit. 308, an eyepiece detection unit 309, a liquid crystal display unit 310, a shutter button 311, and a strobe 312 are provided.

  The camera mount 301 makes the interchangeable lens unit 200 mechanically detachable from the camera body 300 via a lens mount 201 described later. The contact block 302 has a plurality of communication terminals. When the interchangeable lens unit 200 is mounted on the camera mount 301, the contact block 302 is coupled to a later-described contact block 202 on the interchangeable lens unit side. The camera CPU 303 controls all of the camera body 300, and includes a RAM, a ROM, an EEPROM, and the like. The control system power supply 304 supplies power to a control system circuit that requires a stable output voltage with relatively little power consumption, such as the distance measuring unit 308 and a photometric unit (not shown).

  The drive system power supply 305 supplies power to a drive system circuit that consumes a relatively large amount of power, such as the interchangeable lens unit 200 and a shutter control unit (not shown). The control system power supply 304 and the drive system power supply 305 are supplied from a battery (not shown). A camera communication I / F unit 306 is an I / F circuit for communicating with a lens CPU 203 described later, and transmits and receives distance measurement information, photometry information, ID information, a power source, and the like. The lens attachment detection unit 307 detects that the interchangeable lens unit 200 is attached. The distance measuring unit 308 is a so-called phase difference detection type distance measuring unit that detects the defocus amount to the subject using the light flux from the interchangeable lens unit 200.

  The eyepiece detection unit 309 detects whether or not the eye is in contact with the viewfinder, and notifies the camera CPU 303 of it. The liquid crystal display unit 310 is a liquid crystal display screen that displays a camera setting state, a live view display of an imaging screen, a preview display at the time of capturing a still image, and the like. Reference numeral 311 denotes a shutter button for an imaging operation. Reference numeral 312 denotes a built-in strobe (strobe), which may be an external strobe depending on the system.

  In the interchangeable lens unit 200, a lens mount 201, a contact block 202, a lens CPU 203 (lens control means), a focus lens 204, a focus lens driving unit 205, an aperture blade 206, an aperture opening position detection sensor 207, a stepping motor 208, an aperture Drive unit 209, lens communication I / F unit 210, LED element 211 (LED light is composed of a plurality of LED elements: illumination unit), LED drive unit 212, retracted region detection unit 213, macro region detection unit 214 (switching unit) The LED element lighting button 215 is provided.

  The lens mount 201 allows the camera body 300 to be mechanically attached to and detached from the interchangeable lens unit 200 via the camera mount 301. The contact block 202 has a plurality of communication terminals, and is coupled to the contact block 302 on the camera body side when the camera body 300 is attached to the lens mount 201. The lens CPU 203 controls all of the interchangeable lens unit 200, and includes a RAM, a ROM, an EEPROM, a drive control unit for driving a stepping motor 208 described later, and the like. The focus lens drive unit 205 enables focus adjustment by driving the focus lens 204 along the optical axis in accordance with a command from the lens CPU 203.

  The aperture drive unit 209 drives the aperture blade 206 by rotating the stepping motor 208 in accordance with a command from the lens CPU 203 to control the aperture value (F value). The aperture opening position detection sensor 207 is composed of a sensor such as a photo interrupter, and detects whether or not the aperture blade is in the open position, and the detection result is managed by the lens CPU 203. The lens communication I / F unit 210 is an I / F circuit for communicating with the camera CPU 303 and transmits / receives distance measurement information, photometry information, ID information, a power source, and the like. The LED drive unit 212 controls lighting of the LED element 211 in accordance with an instruction from the lens CPU 203.

  The collapsible area detection unit 213 and the macro area detection unit 214 detect whether the position of the lens is in the collapsed area or the macro area by a sensor such as a variable resistor or a photo interrupter, and notify the lens CPU 203 of it. However, in this embodiment, it is assumed that the retracted state or macro state of the lens is manually switched, and depending on the lens, there is a case where the lens is switched by electric control according to a command from the camera CPU 303. In this case, it corresponds to detection of receiving a retracted state command or a macro state command from the camera CPU 303. The LED element lighting button 215 is a button that is turned on when the user wants to turn on the LED element 211 and is turned off when the user wants to turn it off.

  FIG. 2 shows a control flow for lighting control of the strobe 312 of the camera and the LED light 211 (LED element) of the lens. When the macro area detection unit 214 detects the macro state of the lens during normal lens control (S201) (S202), the strobe 312 is always turned off (S203), and only the lighting control of the LED light 211 is enabled (S204). ). When it is detected that it is not in the macro state (S202), the LED light 211 is always turned off (S205), and the strobe 312 performs normal light emission control (S206).

  By controlling as in the above-described embodiment, when macro photography is performed with a camera equipped with both the strobe 312 and the LED light 211 of the lens, an unexpected shadow is generated by the strobe 312 because both are turned on simultaneously. Can be prevented.

  Of course, there are cases where the automatic lighting / extinguishing control in the embodiment is inconvenient to the actual use conditions, but at that time, the liquid crystal display is used so that the manual lighting / extinguishing operation with respect to the LED light 211 is given priority. The setting can be made with the setting menu of the section 310 or another button.

  As mentioned above, although this embodiment was described, this invention is not limited to this embodiment, A various deformation | transformation and change are possible within the range of the summary. For example, although the LED light 211 has been described as having a built-in lens, the external LED light, the interchangeable lens unit 200, and the camera body 300 may operate in conjunction with each other.

  The optical apparatus of the present invention can be applied to an interchangeable lens, a camera main body to which the interchangeable lens can be attached and removed, and a photographing system including the interchangeable lens and the camera main body.

DESCRIPTION OF SYMBOLS 100 ... Camera system 200 ... Interchangeable lens unit 201 ... Lens mount 202 ... Contact block 203 ... Lens CPU
204 ... Focus lens 205 ... Focus lens driving unit 206 ... Aperture blade 207 ... Aperture open position detection sensor 208 ... Stepping motor 209 ... Aperture driving unit 210 ... Lens communication I / F unit 211 ... LED element (LED light)
212 ... LED drive unit 213 ... Retractable region detection unit 214 ... Macro region detection unit 215 ... LED element lighting button 300 ... Camera body 301 ... Camera mount 302 ... Contact block 303 ... Camera CPU
304 ... Control system power supply 305 ... Drive system power supply 306 ... Camera communication I / F unit 307 ... Lens mounting detection unit 308 ... Distance measuring unit 309 ... Eyepiece detection unit 310 ... Liquid crystal display unit 311 ... Shutter button 312 ... Strobe

Claims (4)

It consists of a lens, camera and strobe,
The lens is
Illumination means comprising a plurality of light source elements for subject illumination;
Switching means for switching the lens arrangement between the macro mode and the non-macro mode;
Lens control means for performing lighting control of the illumination means,
The camera
In an optical apparatus provided with camera control means for controlling lighting of the strobe,
An optical apparatus characterized in that when the macro mode of the lens is used, the strobe is disabled and only the illumination means is used. The optical apparatus according to claim 1,
2. The optical apparatus according to claim 1, wherein the state of the switching unit is notified from the lens control unit to the camera control unit. The optical apparatus according to claim 1,
The optical apparatus according to claim 1, wherein the switching unit is switched by a command from the camera control unit. It consists of a lens, camera and strobe,
The lens is
Illumination means comprising a plurality of light source elements for subject illumination;
Lens control means for performing lighting control of the illumination means,
And a macro area and a non-macro area in the shooting distance area,
The camera
In an optical apparatus provided with camera control means for controlling lighting of the strobe,
Notifying the camera control means from the lens control means whether the macro area or non-macro area,
An optical apparatus characterized in that when in a macro area, the strobe is disabled and only the illumination means is used.