DE2625552A1 - DISPLAY DEVICE FOR PHOTOGRAPHIC CAMERAS - Google Patents

Description

Display device for photographic cameras

The invention relates to a photographic display device Cameras in which the correct exposure or an incorrect exposure setting are achieved by means of luminous elements is shown.

There are already known display devices of this type, in each of which one light-emitting diode of a light-emitting diode chain arranged in the field of view of the camera viewfinder is digital is controlled, whereby the type of exposure set or an exposure value is displayed.

In these devices, setting the correct exposure is made difficult by the fact that the indicator light is difficult to see.

The purpose of the invention is to avoid this disadvantage.

The object of the invention is to create a display device with which such a control a lighting element chain that takes place even with light Viewfinder image without additional markings next to the light element chain a clearly recognizable display of each set exposure takes place.

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According to the invention this object is achieved in that The lighting element chain consists of two digitally controllable groups, the two adjacent groups lighting up Individual elements of the two groups the correct or the simultaneous illumination of one of these two elements with a further luminous element belonging to the same or a different group, type and degree of a set incorrect exposure indicates. The degree of incorrect exposure is determined by the distance between two illuminated elements characterized. The lighting element chain preferably consists of arrowhead-like lighting elements, whereby the luminous elements belonging to a group have the same sense of direction and the two groups to one another have opposite sense of direction.

The type of arrangement and control of the lighting elements according to the invention makes them clearly distinguishable at all times special symbols for the correct exposure setting as well as for underexposure and overexposure settings created.

The invention is described below on the basis of exemplary embodiments.

Show it:

Fig. 1 display variants of a lighting element chain

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rectified with / misalignment controlled Lighting elements

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Pig, 2nd display variants of a lighting element chain with counter-directed light elements activated in the event of a misalignment

The lighting element chain according to Figure 1 consists of two Groups of luminous elements visible in the field of view of the camera viewfinder, preferably thin-film indicators, of which the light elements 1 to 3 form one group and the light elements 4 to 6 form the other group. the Light elements can be controlled digitally.

The mode of action is as follows:

With overexposure of two exposure levels and more elements 1 and 3 light up; if the overexposure is weaker, elements 2 and 3 light up · When approaching the When the correct exposure is set, the lighting effect changes, in that the lighting element 2 goes out and the luminous element 4 lights up for this purpose. This formed by the neighboring light elements of both groups The symbol is clearly perceptible to the viewer. Light up depending on the degree of underexposure set elements 4 and 5 or 5 and 6. The sign of a misalignment is determined by the in each case Direction glowing elements highlighted.

The lighting element chain according to FIG. 2 has the same structure.

However, the lighting effects are different from those described above. In the event of severe overexposure, 609853/0700 glow

the opposing light elements 1 and 4 »at elements 2 and 4. With the correct exposure setting, the different ones light up again Adjacent lighting elements 3 belonging to groups and 4 on. A faint underexposure will result Illumination of the light-emitting elements 3 and 5, a stronger one by illumination of the light-emitting elements 3 and 6. In contrast to FIG. 1, this variant reflects a continuous approach to the balance state.

609853/0700

Claims (3)

Patent claims: Display device for photographic cameras, in which with one in the field of view of the camera viewfinder arranged lighting element chain the correct exposure or the type and degree of a set Incorrect exposure is indicated, characterized in that the lighting element chain consists of two digitally controllable Groups (1,2,3; 4,5 »6), with the lighting up the two adjoining individual elements (3; 4) of the two groups the correct exposure or the simultaneous illumination of one of these two elements with another light element belonging to the same or a different group, type and degree of a set Indicates incorrect exposure. 2. Display device according to claim 1, characterized in that the degree of incorrect exposure due to the distance two illuminating elements is characterized to each other. 3. Display device according to claim 1, characterized in that the lighting element chain is preferably composed of arrowheads formed light-emitting elements, the light-emitting elements belonging to a group being of the same type Sense of direction and the two groups have mutually opposite sense of direction. Dresden, May 23, 1976 ρ, _{β £} ^ AMFRA-GESELLSCl · '" Τ-ΐ / TTr> TO fi Π Q fi R ^ / Π7ΠΠ CLDC-i \ rU ^v ICl \ rVOCOEUuOwi .; .. <■ UX / KOW. uuoooo / υ / UU LIMITED LIABILITYUi ^ i Blank