JPH02204708A - Grip for photographing lens - Google Patents

Abstract

PURPOSE:To extract the turning of focusing or the like from the external and to convert external turning force into internal one by arranging an I/O member interlocking with the turning of a photographing lens body to the outside of the grips of a photographing lens. CONSTITUTION:A fitting 32 on the end part of a flexible cable in a controller 3 is fixed on a coupling fitting 21 fitted to a grip body 2. A helical gear 51 of an I/O shaft 4 is coupled with a gear 52 of a direction converting means and a driving gear 6 on the other end is engaged with a driving gear 6 formed unitedly with the photographing lens body 1. When the controller 3 is rotated in the clockwise direction, the flexible cable is rotated in the clockwise direction and the rotation is transmitted to the body 1 through a transmission system. Thereby, the rotation of focusing or the like can be extracted to the external and the external turning force can be interlockingly converted for the purpose of focusing or the like.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to, for example, a television camera in which operations such as magnification change, light intensity adjustment, and focusing (hereinafter referred to as focusing) are performed by rotating a dedicated operation ring. This relates to a grip installed on a photographic lens.

(Prior Art) Conventionally, when performing pre-operation such as focusing on a photographic lens of a television camera or the like, for example by remote control, it has been carried out manually or electrically using a special accessory.

(Problem to be Solved by the Invention) However, with conventional photographic lens grips, it is necessary to prepare a special accessory and attach it to the lens barrel or a part of the camera body, or to remove it according to one's intellect. I had to. For this reason, it takes a lot of effort to move them to the shooting location or to store them, which is especially inconvenient when you need to consider the speed of shooting, and the entire shooting lens is large. Therefore, there were problems such as an increase in storage space.

(Means for Solving the Problems) The present invention provides an input/output member that operates in conjunction with the rotation of the photographic lens body on the outside of the photographic lens grip, thereby making it easy to rotate the photographic lens for focusing, etc. To provide a grip for a photographic lens that can be taken out.

In addition, in the configuration that characterizes the present invention, it is possible to conversely convert external rotational force for focusing of a photographic lens, etc., and thereby provide an easy-to-use grip for a photographic lens. do.

(Example) Next, an example specifically expressing the present invention will be described with reference to the drawings.

FIG. 1 is a plan view best showing the features of the grip for a photographic lens according to the present invention, and FIG. 2 is a plan view showing the main body driving portion of the grip. In the figure, 1 is a photographic lens body, 2 is a photographic lens grip body, and 3 is a controller with a flexible cable.

In the above configuration, first, the grip portion 3 of the controller 3. When rotated clockwise, the flexible cable connected to it is rotated clockwise. When the connecting fitting 32 provided at the end of the flexible cable is fixed to the other connecting fitting 21 attached to the grip body 2, the clockwise rotational force of the controller 3 is transferred to the grip body 2 through the flexible cable. The signal is transmitted to an input/output shaft 4 supported by a bearing. One rotational direction converting means (such as a helical gear) 5□ fixed to the input/output shaft 4 is connected to the other rotational direction converting means (such as a helical gear) 52, and this rotational direction converting means 5□ The shaft to which is fixed (supported by the grip body with a bearing) is
A drive gear 6 is fixed near the other end. The rotational force of the drive gear 6 can be transmitted to a rotating gear 7 that is integrally formed with the photographic lens body 1. By rotating the secondary controller 3, the rotational drive can be transmitted to the photographic lens body 1.

Furthermore, the configuration of the present invention described above can be performed not only by rotation transmission by manual connection via a flexible cable, but also by electric power by using a rotation unit that electrically applies rotational force.

Furthermore, in the above-mentioned embodiment, the input/output shaft 4 was used as a manual shaft, but it is also possible to attach a unit that can add an adjustable rotational torque means when the photographing lens body 1 is manually rotated. good.

Further, the input/output shaft 4 may include a rotation angle detection means capable of detecting a rotation angle so that focus information and the like can be transmitted. Furthermore, a servo control system can be constructed by linking such information with electric means.

(Effects of the Invention) As explained above, in conjunction with the rotation of the photographic lens body, the input/output member capable of interlocking the rotational force from the outside of the lens grip body or from the outside is connected to the outside (or inside) of the photographic lens grip. ), it is possible to construct an extremely flexible system that is simple, such as a small, single-function unit, and that allows remote control such as focusing to be performed very quickly and easily.

[Brief explanation of the drawing]

Figure 1 is a plan view that best represents the features of the present invention;
The figure is a plan view showing the driving portion of the grip body.

Claims (1)

[Claims] (1) In a photographic lens grip that has an internal rotation mechanism for adjusting the magnification, light intensity, focusing, etc. of the photographic lens, the exterior of the photographic lens grip is linked with the rotation mechanism. A grip for a photographic lens, comprising an input/output member that transmits the rotation in conjunction with the rotation.