JPS61273078A - Operating device or television camera - Google Patents

Abstract

PURPOSE:To obtain high-speed operation and operation feeling equal to that of a lens section of a large-sized television camera by separating a portable type television camera into a motor driven means and a lens adaptor and providing the motor driven means with high weight to the television camera main body or a tripod adaptor. CONSTITUTION:A lens controller 7 inputs a drive signal of zooming or focusing to the motor driven means 4. The motor driven means 4 uses a servo mechanism to drive the drive delivery means in the adaptor unit 5 through connection means 12, 13 to drive a zoom ring 10 and a focus ring 9, each turning angle is limited in matching with the turning angle of the lens section 2 to protect the lens section 2 in terms of strength. Then the means 4 is mounted attachably and detachably to the television camera main body 1 or the tripod adaptor 6, then the load to the lens section 2 is relieved and the shock produced from a motor or the like in the means 4 is not directly delivered to the lens section. Thus, the motor drive by using the similar servo mechanism to that of the large sized lens section is attained for the small-sized lens section.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a television camera operating device, and in particular to a relatively small lens s attached to a handheld television camera.
The present invention relates to a high-performance television camera operating device that uses a servo mechanism to perform focusing at high speed and stably during a zoom operation.

(Prior Art) Conventionally, a large-sized television camera has a lens section equipped with a 1-movement driving means having a servo mechanism for performing focusing and zooming by operations from the television camera side.

On the other hand, since the lens part of a handheld dust-free TV camera is small, it is difficult to make the mechanical strength of the lens part comparable to that of a large lens part. For example, zooming was done using a motor or similar drive, and focusing was done manually using a flexible cable control. Therefore, there is a disadvantage that the operating speed at this time is much slower than that of a large lens part because the driving power of the motor etc. attached to the small lens part is low.

The zoom speed and focus speed of Okami's Daisei TV camera are both about 0.5 seconds, but the zoom speed and focus speed of Shihandi's TV camera are both about 15 seconds, which is extremely slow.

On the other hand, as the performance of handheld TV cameras has improved, they have come to be used in the same way as large-plate TV cameras.

Looking ahead, there is a demand for a mechanism that allows focus and zoom operations to be performed using a servo mechanism, just like in the large-scale television camera, even for small-sized television cameras that are less handicapped.

However, it is mechanically difficult to provide an electric drive unit with a servo mechanism to a small lens unit that is weak in strength. It is an object of the present invention to provide an operating device for a television camera that uses a servo mechanism to electrically perform focus and zoom operations in a mechanically stable and quick manner, similar to the large-scale television camera.

(Characteristics of the present invention) The nine-shine lens sK has a drive transmission means for rotating at least one of the zoom ring and the focus ring of the lens portion.
It has a detachable adapter unit, an electric drive means having a motor for driving the adapter unit, and a connection means for transmitting the operation from the electric drive means to the adapter unit, and the electric drive means is connected to the television camera body or It is constructed so that it can be detachably attached to a three-leg adapter for a television camera.

Other features of the invention are described in the implementation column.

c′ Example) FIG. 1 is a schematic diagram of an embodiment of the present invention.

In the same figure, l is the TV camera body, 2 is the lens part, and 3
is a befinder. Reference numerals 9 and 10 denote a focus ring, a, and a zoom gear provided on the lens barrel of the lens section 2 for rotating the focus section and the zoom section of the lens section 2, respectively. 4 is an electric drive means, which includes a motor, potentiometer, and a motor for zooming and focusing operations.
It has a built-in amplifier, etc. Reference numeral 7 denotes a lens controller which transmits zoom operations and focus operations to the electric drive means 4. 5 is an adapter unit 6D connecting means 12
, 13 to transmit the driving force from the electric drive means 4 to the focus gear 9 and the zoom gear lO, respectively.
It is a trap that can be detachably attached to. A drive unit 8 drives, for example, an iris gear 11 to control the aperture. Reference numeral 6 denotes a three-legged adapter for a television camera, to a part of which the electric drive means 4 is removably attached with a mounting screw 15. 16 is a camera cable.

In this embodiment, the lens controller 7 manually sends drive signals for zooming and focusing operations to the electric drive means 4. The electric drive means 4 rotates the zoom 1110 and the focus ring 9 by driving the drive transmission means in the adapter unit 5 through the coupling means 12 and 13 using a servo mechanism. Each rotation angle at this time is limited to match the rotation angle of the lens portion 20. This prevents torque from being applied beyond the possible range of the lens portion, thereby protecting the lens portion with strength.

In this implementation sequence, both the 7 orcus drive and the zoom drive from the electric drive means 4 are output as rotational motion KJ
:The driving methods of the zoom gear 10 and the focus gear 9 of the lens section are matched to simplify the structure. By detachably attaching the electric drive means 4 to the television camera body l or the tripod adapter 6, the load on the lens section 2 is eliminated, and furthermore, the impact generated from the motor etc. in the electric drive means 4 is directly applied to the lens. The information is not communicated to the department. As a result, it is possible to electrically drive a small hand-held lens part, which is mechanically relatively weak, by a servo mechanism similar to that of the OSE lens part, thereby enabling operation at a faster operating speed.

Furthermore, by detachably attaching the lens adapter 5 to the lens s2, the TV camera can be used on the shoulder.

In this embodiment row, either the focus gear or the zoom gear may be rotated, and in this case, only one connecting means is required.In this embodiment row, the connecting means 12 and i3 are It is also possible to use an Aephasargidia or 7-lexiple cable, which can absorb height deviations, etc. You can also use 5K for direct fitting.

If the electric drive means 4 is provided with a drive stroke width adjustment section, it can be applied to other different lens sections. In addition, if a friction machine m is provided in the electric drive means 4 or lens adapter 5, initial setting (each stroke position adjustment) can be performed.
can be easily done.

(Effects of the Present Invention) According to the present invention, in Handy's television camera, the electric drive means and the lens adapter are separated, and the heavy electric drive means is provided on the television camera body or the tripod adapter, so that the lens part can be easily moved. It has a structure that reduces the load, and can be used at high speeds similar to the lens part of Ozu's TV lenses.
It is possible to achieve a television camera operating device that provides a sense of operation. This also allows the use of handheld television cameras to be expanded.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of one implementation of the present invention. In the figure, l is the TV camera body, 2 is the lens part, and 4
5 is an electric drive means, 5 is a lens adapter, 6 is a tripod adapter, 7 is a lens controller, 9 is a focus gear, 10 is a zoom gear, and 12 and 13 are connection means.

Claims (1)

[Claims] an adapter unit that is removably attached to the lens unit and has a drive transmission unit for rotating at least one of a zoom ring or a focus ring of the lens unit; an electric drive unit that has a motor for driving the adapter unit; A connecting means for transmitting the operation from the driving means to the adapter unit, and the electric driving means is configured to be detachably attached to the television camera body or the tripod mounting adapter of the television camera. TV camera operating device.