JPS60139998A - Universal-head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Technical field) The present invention relates to a pan head to which a camera is attached.

(Prior Art) Conventional pan heads generally allow the photographer to manually adjust the direction of the camera mounted thereon. However, with this pan head, the subject cannot stand in front of the camera and make movements such as rotation, so it is inconvenient that the subject cannot control his or her position within the screen.

(Objective) An object of the present invention is to provide a pan head that operates based on a light signal from a subject.

(Structure) The present invention will be described below by giving examples with reference to the drawings.

It is held by a person who is to be photographed, and the signal given by the photographic subject's operating means is encoded by coding means, modulation means, etc., and the encoded signal is added to the output light of the light source and sent to the pan head 2.

The signals given by the operating means are composition-related signals, such as a release signal 1 winding signal, a zooming signal, a photographic lens movement signal, and the like.

The pan head 2 has a pan head lower part 3 attached to a tripod 4 and a pan head upper part 5.
A camera 6 is attached to the camera 6, and the upper part 5 of the pan head is rotatably supported by the lower part 3 of the pan head by a ball bearing 7.

In the upper part of the camera platform 5, an optical signal sent from the remote controller 1 passes through light receiving lenses 9 and 10 and is imaged onto linear sensors 11 and 12. This linear sensor 11,1
2 is arranged symmetrically with respect to an optical axis parallel to the optical axis of the camera 6, and is driven by a drive circuit 13. Linear sensor 1
1 and 12 convert the optical image into an electrical signal and output it in time series,
The output signal is sent to a signal light image position detection circuit 16.17 and a signal extraction circuit 18 through a predispersion amplifier 14.15. The signal light image position detection circuits 16 and 17 are the linear sensor 1
At 1° 12, the position where the optical signal from the remote controller 1 is imaged is detected from the input signal, and the signal extraction circuit 18 extracts the input signal from the operating means from the input signal. The arithmetic circuit 19 is a signal light image position detection circuit 16.17.
By calculating whether the optical signal imaging position on linear sensor 11.12 is symmetrical from the output signal of Based on the result, the motor M is driven via the interface 20. The rotation of this motor M is decelerated by a gear head 21, and drives an internal gear 23 cut into the lower part 3 of the pan head via a final stage gear 22. Since the lower part 3 of the pan head is fixed to the tripod 4, the upper part 5 of the pan head rotates with the camera 6 mounted thereon to align the direction of the camera 6 with the subject.

Therefore, even if the subject moves, the camera 6 can automatically track the subject. Further, the arithmetic circuit 19 decodes the output signal of the signal extraction circuit 18 and outputs a release signal between it and the camera 6 via the input/output circuit 24.

The interface 2 controls the release, winding, zooming, movement of the photographic lens, etc. of the camera 6 by taking winding signals, zooming signals, photographing lens movement signals, etc.
A predetermined signal is outputted to the display unit 26 via 5.

FIG. 3 shows another embodiment of the invention.

This embodiment operates in response to a pan head operation instruction signal in addition to the camera control signal from the subject in the above embodiment, and the pan head operation instruction signal corresponds to one rotation angle per rotation speed of the pan head. This is a signal that indicates. If the pan head can not only rotate in the left-right direction but also move in the vertical direction, such movement may be instructed by the pan head operation instruction signal. In addition to the above-mentioned signals, the remote controller 1a is also given a pan head operation instruction signal by the operating means, and these signals are encoded by a coding means, a modulating means, etc., and the output light of the light source is modulated and sent to the pan head 2. send to In the pan head upper part 5, the arithmetic circuit 19a decodes the pan head operation instruction signal etc. from the output signal of the signal extraction circuit 18, and drives the motor M via the interface 20 according to the instruction content of the pan head operation instruction signal. At this time, the pan head rotation amount detection contact piece 27 integrated with the pan head upper part 5 slides on the pan head lower part 3 to roughly detect the rotation amount of the pan head upper part 5 and inputs it to the calculation circuit 19a. The motor rotation amount detecting section 28, which is directly attached to the shaft of the camera, detects the amount of rotation of the upper part of the pan head 50 with high resolution and inputs it to the arithmetic circuit 19a. The arithmetic circuit 19a is connected to the pan head rotation amount detection contact piece 27. The signal from the motor rotation amount detection section 28 is processed (for example, counted), and when the rotation angle instruction value of the pan head operation instruction signal is reached, the motor M is stopped.

In this embodiment, even if the subject holding the remote controller 1a moves out of the field of view of the camera 6 in front of the camera 6, the remote controller 1a can be used to give instructions after the camera has rotated 60 degrees (for example, to return the camera to its original position) before the camera 6 rotates. If you give instructions such as "which one to turn", you will avoid losing control of the pan head.

In the above embodiment, the arithmetic circuit 19.19a can calculate the distance to the object from the output signal of the signal light image position detection circuit 16.17 and send it to the camera 6 for focusing. Alternatively, a series of operating programs may be sent to the pan head 2 using the remote controllers 1 and 1a, and the pan head may decipher the programs and operate according to the instructions and give instructions to the camera 6. In addition, after setting the positional relationship between the camera and the subject on the panhead in advance or sending it from the remote controller to the panhead, when the subject holding the remote controller is in that positional relationship with the camera, the panhead detects this and takes a picture of the subject. You may also notify the

(Effects) As described above, since the pan head according to the present invention operates based on signals from the subject, the subject can control his or her position within the camera screen while remaining within the camera screen. becomes possible.

[Brief explanation of drawings]

1 and 2 are block diagrams and schematic diagrams showing one embodiment of the invention, and FIG. 3 is a block diagram showing another embodiment of the invention. 1.1a...Remote controller, 3...Bottom part of the pan head, 5...Top part of the pan head, 11.12...Linear sensor, 19°19a...Arithmetic circuit, M...Motor. 7- Li/Isai/Ii

Claims (1)

[Scope of Claims] 1; A pan head for holding a camera, comprising a light receiving section that receives an optical signal from a subject, and means for performing a predetermined operation based on the output signal of the light receiving section. 2. Two line sensors that receive optical signals from the subject, and the relationship between the camera orientation and the subject are determined from the output signals of these two line sensors, and the camera holder is moved so that the camera faces the subject. The pan head according to claim 1, further comprising means for rotating the pan head. 3. Claim 1 in which the camera holder is rotated by the amount of shift in the direction of the camera sent from the subject.
A pan head described by Ayumu.