JPH02264232A - Data recording method and apparatus for camera - Google Patents

Abstract

PURPOSE: To obtain a photograph where clear data is recorded by imprinting photographing data on film by using a part of a luminous flux made incident from an image pickup lens and adjusted at proper light quantity by a diaphragm and a shutter or the like. CONSTITUTION: An internal liquid crystal display 6 is disposed between the shutter and the film 3 and also in the vicinity of an upper film guide 2. The light quantity or the like of the luminous flux made incident from the image pickup lens 1 is adjusted most suitable by the diaphragm and the shutter, so that the film 3 is exposed. Then, a part of the luminous flux adjusted is transmitted through the internal liquid crystal display 6, and the data displayed on the internal liquid crystal display 6 is imprinted on the film 3. The data displayed on the internal liquid crystal display 6 is positive display, so that the film 3 is exposed by the light transmitted through the part other than the data. Thus, a structure is made simple, and the photographing data is always imprinted by suitable light quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a data recording method and device for a camera,
More specifically, the present invention relates to a data recording method and apparatus for a camera that records photographic data such as photographing date on film.

(Prior Art) Conventionally, photographic data such as the date of photographing has been copied onto film by a device built into a camera as shown in FIG.

The camera shown in FIG. 5 includes a film 1 in which a light flux passing through a photographing lens 10, an aperture (not shown), and a shutter (not shown) is guided by a film guide 12, 12'.
3 to expose T T L (Tbrougb Tl+e
The camera is equipped with an external liquid crystal display (not shown) on the front side of the camera body that displays photographic data such as the date of photographing.

In the camera shown in FIG. 5, the light from the light-emitting lamp 20 that momentarily emits light when photographing (when the shutter is opened) is reflected by the reflection mirror 18, and the light from the internal liquid crystal display 16 is reflected by the reflection mirror 18.
is irradiated.

The internal liquid crystal display 16 displays the same photographic data as the external liquid crystal display.

Of the light irradiated to the liquid crystal display 16, the light that passes through the internal liquid crystal display 16 reaches the film through the slit 24 of the back cover 14 that substantially covers the back surface of the film 13.

Therefore, the photographic data displayed on the internal liquid crystal display 16 is imprinted onto the photosensitive surface provided on the front surface of the film 13 from the back surface of the film 13 via the base film.

Note that the internal liquid crystal display 16 is arranged near the top end of the film 13 when photographing data is to be displayed near the top end of the photograph to be obtained.

This is because, as shown in FIG. 6, the subject located in front of the lens L is imaged on the screen S (film) located behind the lens L as an inverted GM.

The internal liquid crystal display 16, external liquid crystal display, and light emitting lamp 2 that constitute the camera shown in FIG.
0, etc., is controlled by a control section incorporating an IC, as shown in FIG.

Among these, the display data on the internal display 16 and the external display can be changed via the control section by operating an input key on an operation section provided outside the camera body.

In addition, the light emission timing and light emission amount of the light emitting lamp 20 are as follows.
The control section makes adjustments in response to photographing condition signals such as the ASA signal, shutter speed, and aperture value from the camera body.

However, in the conventional camera shown in FIG. 5, photographic data is only imprinted on the photosensitive surface provided on the surface of the film 13 by light transmitted through the film paste. For this reason, there are drawbacks such as the outline of the data recorded in the resulting photograph being easily blurred or dull, and the light emitting lamp requiring a high brightness.

In order to eliminate such drawbacks, Japanese Patent Application Laid-Open No. 61-159631
The publication proposes a photographic data recording device in which an internal liquid crystal display, a reflective mirror, and a light emitting lamp are installed on the photosensitive surface side of the film, and photographic data is directly recorded on the photosensitive surface of the film.

(Problems to be Solved by the Invention) According to the device proposed in the above-mentioned publication, it is possible to eliminate the blurring of the data outline recorded in the obtained photograph,
Moreover, it is not necessary to use a high-intensity light-emitting lamp.

However, since a light-emitting lamp is used, it is necessary to strictly adjust the relationship between the amount of light incident from the imaging lens and the amount of light emitted from the light-emitting lamp, as well as the emission timing of the light-emitting lamp. Requires similar control circuitry. For this reason, the photographic data recording device remains a complicated device, which is one of the factors that increases the manufacturing cost of the camera.

Furthermore, if there is a lot of reflection from the subject, overexposure may occur, and photographic data may not be recorded in the resulting photograph.

Furthermore, since a reflective mirror is used, a space is required to accommodate the reflective mirror and the light emitting lamp, and there is a limit to miniaturization of the camera.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to propose a data recording method and apparatus for a camera that has a simple structure and can always record photographed data on film with an appropriate amount of light.

(Means for Solving the Problems) In order to achieve the above object, the inventor of the present invention has discovered that since the light flux for exposing the film is adjusted to an appropriate light amount by an aperture, a shutter, etc., a part of the light flux is As a result of considering and considering whether it would be advantageous to record photographic data using the above method, the present invention was arrived at.

That is, the present invention provides a camera that is installed between the shutter and the film when photographing using a TTL camera in which the light flux from the tit image lens passes through the aperture and the shutter in order to expose the film. A data recording method for a camera is provided, characterized in that a part of the light beam passing through the shutter is transmitted through a liquid crystal display on which is displayed, and photographed data displayed on the liquid crystal display is captured on film.

In addition, in a TTL camera in which a light flux passes through an imaging lens, an aperture, and a shutter in order to expose a film, a camera is installed between the shutter and the film, and a part of the light flux passing through the shutter passes through and is displayed. A data recording device for a camera is characterized in that it is equipped with a liquid crystal display capable of copying photographed data on film, and a control means for controlling the liquid crystal display.

In the present invention, if the data displayed on the liquid crystal display is positive, it is possible to obtain a photograph in which clear photographic data is recorded.

(Function) According to the present invention, one reflection mirror and a light-emitting lamp are not used in order to imprint photographic data onto a film using a part of the luminous flux that enters from the imaging lens and is adjusted to an appropriate light intensity by an aperture, a shutter, etc. Even if there is a lot of reflected light from the subject, it is possible to obtain a photograph with clear data recorded without overexposure.

Furthermore, as mentioned above, it is possible to eliminate the need for a light-emitting lamp and a reflection mirror, and also to eliminate the need for a control circuit to control them, which makes it possible to simplify the structure of the photographic data recording device and improve the camera performance. Further downsizing can be achieved.

(Example) The present invention will be explained in more detail using the drawings.

FIG. 1 is an explanatory diagram illustrating the data recording device of the present invention.
It is a TL camera.

The film 3 is guided by an upper film guide 2 and a lower film guide 2'. The back surface of this film 3 is covered with a back cover 4, and the back surface of the back cover 4 is further covered with a cover body 5.

In this embodiment, an internal liquid crystal display 6 is provided between the shutter and the film 3 and near the upper film guide 2. The photographic data displayed on the internal display 6 is displayed in a positive manner as shown in FIG.

Note that the display data is displayed horizontally and vertically upside down, taking into account the photograph to be obtained.

The camera of this embodiment is provided with an external liquid crystal display (not shown) on the front side of the camera body, and the same data as the shooting data displayed on the internal liquid crystal display 6 is displayed.

The data on this external liquid crystal display is displayed in a directly readable manner and may be displayed in a positive or negative manner.

The internal liquid crystal display 6 and the external liquid crystal display are controlled by a control section incorporating an IC, as shown in FIG.

This control section is operated by power supplied from the power supply section, and the display on the internal liquid crystal display 6 and the external liquid crystal display can be changed by operating an input key constituting the operating section.

In this embodiment, the light flux incident from the imaging lens 1 shown in FIG. 1 is optimally adjusted in light quantity and the like by an aperture and a shutter, and the film 3 is exposed.

At that time, a part of the adjusted luminous flux (arrow in FIG. 1) passes through the internal liquid crystal display 6, and the data displayed on the internal liquid crystal display 6 is transferred onto the film 3.

Since the data displayed on the internal liquid crystal display 6 of this embodiment is a positive display, as shown in FIG. 2, the film 3 is exposed to light that has passed through parts other than the data.

Therefore, in the photograph P obtained, black data is displayed in the lower part 16 of the photograph as shown in FIG.

The data shown in FIG. 4 are the year, month, day, time, and '+111 days of photographing.

When photographing with the camera of this embodiment, the film 3
You can check the data recorded on the external LCD display. At this time, if the data on the external liquid crystal display is incorrect, the data can be corrected by operating the input key on the operating section (FIG. 3).

According to the camera data recording device of this embodiment,
Since the light emitting lamp, its control circuit, and furthermore the reflecting mirror can be omitted, the control circuit and data recording device can be simplified, and the camera can be made smaller.

Furthermore, since the light beam that imprints data onto the film 3 is always optimally adjusted, overexposure will not occur even if there is a lot of reflection from the subject, and clear data can be recorded in the photograph.

In the embodiments described above, the internal liquid crystal display 6 is installed near the two-part film guide 2 so that the data recording location is at the bottom of the resulting photograph. The installation location of the internal liquid crystal display 6 can be arbitrarily determined in relation to the data recording location in the photograph to be obtained.

Furthermore, although the data on the internal liquid crystal display 2 employed in this embodiment is a positive display, it may be a negative display.

However, in this case, the data of the obtained photograph will be white.

Furthermore, the data to be recorded includes the year, month 1st, time, and
In addition to the day of the week, for example, shooting conditions such as shutter speed and aperture value may be displayed for professional photographers, or only necessary data may be selected.

(Effects of the Invention) According to the present invention, since the structure of the data recording device can be simplified, it is possible to further downsize the camera, and it is also possible to reduce the manufacturing cost of the camera.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for explaining the present invention, and FIG. 2 is a schematic diagram showing a camera incorporating the device of the present invention with its back cover opened.
FIG. 3 is a block diagram showing a control method for controlling the data recording device of the present invention, FIG. 4 is a state diagram showing the state of a photograph obtained by a camera incorporating the data recording device of the present invention, and FIG. An explanatory diagram illustrating a conventional data recording device,
FIG. 6 is an explanatory diagram illustrating the principle of the lens, and FIG. 7 is a block diagram illustrating a control method for controlling a conventional data recording device. In the figure, 1...imaging lens, 2.2-film guide, 3...film, 6...
LCD display. Diagram

Claims (1)

[Scope of Claims] 1. When photographing using a TTL camera in which the light flux from the imaging lens passes through an aperture and a shutter in order to expose the film, the camera is installed between the shutter and the film and is used for photographing. The data is displayed on the LCD display.
A data recording method for a camera, characterized in that a part of the light beam passing through the shutter is transmitted, and photographed data displayed on a liquid crystal display is copied onto a film. 2. The camera data recording method according to claim 1, wherein the displayed photographic data is positive. 3. In a TTL camera in which a light flux passes through an imaging lens, an aperture, and a shutter in order to expose a film, a camera is installed between the shutter and the film, and a part of the light flux passing through the shutter passes through and is displayed. What is claimed is: 1. A data recording device for a camera, comprising: a liquid crystal display capable of copying photographed data on film; and a control means for controlling the liquid crystal display. 4. The data recording device for a camera according to claim 3, wherein the photographic data displayed on the liquid crystal display is positive.