JPH0363635A - Finder display device - Google Patents

Abstract

PURPOSE:To improve the handleability by providing a means which displays a reference line in a finder as necessary. CONSTITUTION:When an SW 4 for lighting is turned on, lamps (3-1)-(3-4) which are connected to the SW 4 are supplied with electric power from a battery 5 to go on. A square-ruled scale which is not viewed so far is displayed by a superimposing function. Thus, when a photograph needs to be taken at a correct horizontal or vertical attitude, the scale is displayed in the finder and when the scale is not necessary, it is not displayed, so trouble in the finder is eliminated and a finder display with good handleability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a display of a camera, particularly a display within a finder.

[Conventional technology] In the past, the focus plate of the finder had to be replaced each time according to the purpose of the photograph, which was not easy to use and caused scratches when replacing it, and it was difficult to prevent the focus plate from being damaged after being removed. It was also necessary to store it in a case etc.

[Problems to be Solved by the Invention] The present invention utilizes the superimpose function to eliminate the drawbacks of the prior art and at the same time provide an easy-to-use finder display.

[Description of the embodiment] In FIG. 1, l is the focus plate of the finder,
The beam splitters 1a and Ib are arranged in a grid pattern, and when they are illuminated by a lamp, the scales of the grid can be seen by the superimpose function. 2 is a diffuser plate for eliminating uneven illumination of the lamp. 3-1 to 3
-4 is the lamp that illuminates the focusing plate l, 4 is the lamp 3-1
3-4 are turned on and off, and 5 is a battery that supplies power to the lamp.

Next, the operation will be explained based on the embodiment shown in FIG.

When the lighting SW4 provided in the camera (not shown) is turned on, the lamp 3-1 connected to it is turned on.
Power is supplied from the battery 5 to 3-4, and the lamp lights up. Then, using the superimpose function, the grid scale that was previously invisible in the viewfinder will be displayed.

Next, parts of the embodiment shown in FIG. 2 that are different from those shown in FIG. 1 will be explained.

A diode 6 prevents the current from flowing backwards so that when SW7 is switched to display either the horizontal or vertical scale, the lamp illuminating the unselected scale will not be lit.

7 is a SW for switching the illumination method of the grid scale, and three illumination methods can be selected: only the horizontal line, only the vertical line, or both horizontal and vertical lines.

For example, set SW7 to position a so that only the horizontal scale is illuminated. Thereafter, when the illumination SW4 provided in the camera (not shown) is turned on, power is supplied from the battery 5 to the lamps 3-1 and 3-2 connected to this which illuminate the scale of the horizontal line, and the lamp 3- 1.3-2 lights up. As a result, only the horizontal scale is displayed in the viewfinder.

Next, the embodiment shown in FIG. 3 will be explained.

In the embodiment shown in FIG. 3, SW4 in FIGS. 1 and 2 is replaced with another configuration.

8-1 and 8-2 are SWs that are linked to a mode dial of a camera (not shown). A decoder 9 is connected to the mode 5W8-1.8-2 and the power supply W5, and uses its output to control lighting and non-lighting of the lamp.

Its operation is such that when a predetermined mode is selected with the mode dial of the camera (not shown)1, for example, when the landscape program mode shown in Figure 4 is selected, the output of the decoder 8 is turned on, the lamp lights up, and the image is displayed in the viewfinder. A scale is displayed.

FIG. 5 shows the arrangement of the focusing plate 1, diffuser plate 2, and lamp 3 viewed from the side.

Figure 6 shows a scale that makes it possible to take the same picture as the already well-known 13 x 36 screen size of Hoho's panoramic camera without having to perform special resolution on a conventional camera that uses 24 x 36 size film. It is a board. This is marked with horizontal lines corresponding to 13 layers in the center of the film surface.

[Effects of the Invention] As explained above, according to the present invention, when it is necessary to take a horizontal or vertical photograph, it is possible to display the scale in the finder without replacing the focusing plate. Since the scale is not displayed when it is unnecessary, it is possible to prevent the inside of the finder from becoming cumbersome, thereby providing an easy-to-use finder display.

It is also possible to automatically display a scale in the viewfinder by setting the camera's shooting mode.
It has also become possible to provide a viewfinder display that is even more user-friendly.

In this embodiment, the display is performed when the landscape program mode is selected, but the display is not limited to this, and for example,
Shooting modes that use a scale to make it easier to align the subject in the viewfinder, such as multiple shooting mode, copy shooting mode, and panoramic shooting mode where you rotate the camera to take multiple photos and stitch them together to create a panoramic photo. That's fine.

In addition, even in special format shooting, only a scale indicating the same shooting position as the film surface exposed in special format shooting is displayed, so it does not affect the metering optical system, AF optical system, etc. It has become possible to take pictures with the camera, and it has become possible to provide an easy-to-use viewfinder display.

In the present invention, a lamp is used as a light source, but the light source is not limited to this, and any light emitting device such as an LED may be used. Further, the scale display is not limited to a lamp and a beam splitter, and a transmissive liquid crystal or the like may be used.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a display device showing a first embodiment. FIG. 2 is an explanatory diagram of a display device showing a second embodiment. FIG. 3 is an explanatory diagram of a part of a display device showing a third embodiment. FIG. 4 is a diagram showing the types of modes switched by the decoder of FIG. 3. FIG. 5 is a side view of the display device shown in FIG. 1. FIG. 6 is an explanatory diagram showing another example of scale. l...Focusing plate la, 1b---beam splitter-3...lamp 4...switch 5...battery

Claims (3)

[Claims] (1) A camera that has a mechanism for displaying a reference line in the viewfinder has a switch that turns the display on or off, and by operating this switch, the reference line is displayed in the viewfinder when necessary. A finder display device for a camera, characterized in that it is provided with a display means and can turn off the display when unnecessary. (2) The reference lines are formed in the viewfinder in the vertical and horizontal directions, and the display means can display only the vertical direction, only the horizontal direction, or any reference line in the vertical and horizontal directions by operating the switch. The finder display device according to claim (1). (3) The finder display device according to claim 1 or 2, wherein the display means displays a corresponding reference line in response to selection of a photographing mode.