JPS61109036A - Display device of television lens - Google Patents

Abstract

PURPOSE:To inform immediately a person concerned in photography information by detecting plural pieces of variable information at respective positions of a television lens and converting them into electric information, and displaying them on a display device arranged at one position on a lens barrel where information is easily observed. CONSTITUTION:The display device 18 is provided at one position on the lens barrel of the television lens 19. A focus lens group 1 is moved for focusing, and then the extent of the displacement is detected by a focus position detector 8 and amplified and converted by an amplifier 13 for focusing into electric information of an LED, liquid crystal, etc., which is displayed on the display device 18. Zoom position information when a variator lens group 2 and a compensator lens group 3 are moved, iris information when an iris 5 is controlled, information of an extender 6, information of the temperature-humidity detector 12 in the lens barrel, etc., are sent to the device 18 through similar amplifiers and displayed. Thus, the persons concerned in photography is informed of information immediately.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device for a television lens, and in particular, after converting variable information such as a zoom position, focus position, and iris position of a television lens into electrical information such as an LED display or a liquid crystal display, The present invention relates to a television lens display device for displaying information on a display body disposed at one location on a television lens barrel to inform camera operators and other persons involved in photography.

Conventionally, variable information regarding a television lens, such as zoom position, focus position, iris position, aperture position, etc., has been displayed at a plurality of positions over a wide area on a television lens barrel. For this reason, it has been difficult to check each piece of information at once.

On the other hand, various attempts have been made to convert variable information located at a plurality of positions on a television lens barrel into electrical information and display it in the finder of a television camera. however,
This display method did not allow only the viewfinder viewer to observe this information. Furthermore, when the television lens is attached to a television camera that does not have the function of displaying each piece of information on the television lens in the 7-inder, there are inconveniences such as these pieces of information not being displayed.

The present invention makes it possible to easily inform camera operators and filming personnel of various information about television lenses arranged in multiple positions over a wide area, and even when attached to a television camera without an information display function. I!
The purpose of the present invention is to provide a television lens display device that can easily inform a large number of people.

The main feature of the TV lens display device that achieves the purpose of the TV lens is that it converts multiple pieces of variable information located at different positions on the TV lens into electrical information, and displays the information at one location on the TV lens barrel. It was shown on a display placed in the area.

Next, one embodiment of the present invention will be described with reference to each drawing.

11th i! 1.#I'' Figure 1 (2
) is a side view thereof, FIG.
22 is a viewfinder, 18 is a display device, 21 is L
It is a display made of ED or liquid crystal, and is concentrated in one place on the television lens. 24 is a focus distance, 25 is a zoom position, 26 is an iris diaphragm, 27 is an extender magnification, and 28 is a confirmation signal for the presence or absence of fogging, which indicates the temperature and humidity inside the television lens barrel.

Figures 2 and 6 show how to detect each piece of information on the television lens, convert it into electrical information, and then display it on the display 21 on the television lens barrel as shown in Figure 1(c). FIG. In Figures 2 and 3, 1 is a focus lens group for performing 7-focusing, 2 is a variator lens group for zooming, and 3 is a convencator lens for correcting image plane fluctuations when zooming. Group 4 is the relay lens front group for imaging, 5 is the iris diaphragm to adjust the amount of light, 6 is the extender for switching to a magnification conversion lens or special effect lens, etc., and 7 is for imaging. This is the rear relay lens group. 8 is a detector for detecting the focus position, 9 is a detector for detecting the zoom position, 1
0 is a detector for detecting the iris position, 11 is a detector for detecting the extender position, and these detectors 8, 810.11 are photosensors and potentiometers.

It is composed of a known detection sensor such as a magnetic sensor. Reference numeral 12 denotes a detector consisting of a temperature sensor and a humidity sensor for detecting the temperature and humidity inside the lens barrel and preventing fogging inside the television lens barrel.

13 is an amplifier that amplifies the focus position signal to a display signal; 14 is an amplifier that amplifies the zoom position signal to a display signal;
15 is an amplifier that amplifies the iris position signal into a display signal;
16 is an amplifier that amplifies the extender position signal into a display signal, and 17 is an amplifier that amplifies the temperature and humidity signal into a display signal.

Next, the operation will be explained.

When the focus lens group 1 is moved and seven focussing is performed, the amount of displacement thereof is detected by the detector 8 for detecting the focus position using a connecting member in the middle, and a signal corresponding to the position or amount of displacement is output. The output signal is amplified and converted into a display signal by the focusing amplifier 13, and the L
The information is displayed as electrical information on the ED, liquid crystal, etc. by the display device 18.

Similarly, in this embodiment, the variator lens group 2
．． Zoom position information when zooming is performed by moving the lens group 3, iris information when the iris 5 is stopped or opened, extender information when the extender 6 is moved to each position and converted into an extender, and Variable information at each position of the TV lens, such as temperature and humidity information when the temperature and humidity inside the lens barrel changes, is detected, and the information is placed at one location on the TV lens barrel via an amplifier and displayed on the display device. It is displayed on the body.

In this embodiment, the display device placed on a part of the television lens barrel is not limited to the position shown in FIG. Also good.

Further, the display on the display body may be color-coded for each type and displayed in IJI number of colors, which makes it easier to observe.

As described above, according to the present invention, after detecting a plurality of pieces of variable information at each position of a television lens and converting it into electrical information, the display device is placed at one location on the television lens barrel at an easily observed position. This information can be immediately notified to those involved in the filming by displaying it on the TV lens barrel.Furthermore, even when attached to a TV camera that does not have a TV lens information display function, this information can be displayed on the TV lens barrel. This can be easily determined from the equipment. In particular, the present invention is very effective for large-sized television lenses.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIG. 2 is a schematic diagram of an embodiment of the present invention. FIG. 3 is an explanatory diagram when each variable information of the television lens of the present invention is detected, converted into electrical information, and then displayed on a display device. In the figure, 1 is the 7-occasing lens group, 2 is the variator lens group, 3 is the funbensator lens group, 5 is the iris, 6 is the extender, 8, 9.10.11.
12 is a detector, and 16°, 14, 15, 16, and 17 are amplifiers.

Claims (1)

[Claims] A display device for a television lens, characterized in that a plurality of pieces of variable information located at different positions on a television lens are each converted into electrical information, and the electrical information is guided and displayed on a display body disposed at one place on a television lens barrel.