JPH11119297A - Finder eyepiece part and photographing device provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide constitution for executing a display on a finder eyepiece part. SOLUTION: The finder eyepiece part which is provided with a window 7a for observing a subject image and a light emitting part 2 and constituted so that light emitted from the light emitting element 2 can not be visually recognized through the window 7a, is provided with a light guide having a light incident part 1a provided in a position on which the light emitted from the light emitting element 2 is made incident, guiding means 1c and 1d for guiding the light entering from the light incident part and a light emitting part 1e for emitting the light guided by the guiding means into the window.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a finder eyepiece.

[0002]

2. Description of the Related Art Conventionally, there has been known a photographing apparatus having a finder mechanism for observing a subject image. There is also known a photographing apparatus provided with an automatic focusing mechanism, which is provided with a light emitting element for displaying an automatic focusing state. This light-emitting element is used when auto-focus is completed,
Blinks or lights up when the distance to the subject is such that automatic focusing cannot be performed. There is also known a photographing apparatus provided with a strobe mechanism, which is provided with a light emitting element for displaying a state of charge of a strobe condenser. This light-emitting element blinks when the charging of the strobe condenser is not completed, or when the charging of the strobe condenser is not completed in spite of the necessity of the strobe light emission for photographing. .

In the conventional photographing apparatus, the above-mentioned light emitting element is provided at a position different from the eyepiece of the finder mechanism, although it is near the eyepiece of the finder mechanism.
For this reason, when checking the automatic focusing state and the charging state of the strobe condenser, the photographer has to temporarily take his / her eyes off the finder eyepiece. It goes without saying that moving the eyes away from the viewfinder eyepiece, that is, moving the eyes away from the subject, increases the probability of missing a photo opportunity. Alternatively, when the device is arranged at a position farther than the pupil diameter, it is difficult to confirm even if it is not necessary to release the eyes.

[0004] The light quantity of the above-mentioned light emitting element is not so large. For example, in a situation where the surroundings are bright, such as during the daytime, it is sometimes difficult to tell whether the light emitting element is emitting light or not.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems.

[0006]

According to the present invention, the above-mentioned problems are solved by the following means. According to the first aspect of the present invention, at least a window (7a) for observing a subject image is provided.
And a light-emitting element (2), in a finder eyepiece part in which light emitted by the light-emitting element is invisible from the window,
An incident portion (1a) provided at a position where the light emitted from the light emitting element is incident, guide means (1c, 1d) for guiding the light incident from the incident portion, and light guided by the guide means And a light emitting portion (1e) for injecting the light into the window.

According to a second aspect of the present invention, in the finder eyepiece according to the first aspect, a protection member (1) for protecting the finder eyepiece is provided in the window, and the light guide is provided with the light guide. It was formed by the same member as the protection member. According to a third aspect of the present invention, in the finder eyepiece of the second aspect, the light guide is formed integrally with the protection member, and the emission section forms a part of the protection member.

According to a fourth aspect of the present invention, in the finder eyepiece according to the second or third aspect, the guide means is provided with a reflecting surface (1c, 1d) for reflecting light incident from the incident portion in a predetermined direction. ). The invention according to claim 5 is
In the finder eyepiece part according to any one of claims 1 to 4, a diffusing means for diffusing emitted light is provided in the emission part.

According to a sixth aspect of the present invention, there is provided at least a window (7a) for observing a subject image, and a light emitting element (2) which emits light based on the state of the photographing device, and the light emitting element emits light. In a photographing apparatus provided with a finder eyepiece part that makes light invisible from the window, an incident part (1a) provided at a position where light emitted from the light emitting element is incident;
Guiding means (1c, 1c) for guiding the light incident from the incident portion;
d), and a light guide including an emission part (1e) for emitting the light guided by the guide means into the window.

According to a seventh aspect of the present invention, in the photographing device provided with the finder eyepiece according to the sixth aspect, the light emitting element is charged to a strobe condenser of a strobe device provided in the photographing device. It was configured to emit light based on According to an eighth aspect of the present invention, in the photographing apparatus provided with the finder eyepiece section according to the sixth aspect, the light emitting element is provided in accordance with a state of automatic focusing by an automatic focusing device provided in the photographing apparatus. To emit light.

In the above description, reference numerals used in the description of embodiments to be described later have been attached to the configuration of the present invention. This is to clarify the correspondence between the configuration of the present invention and the configuration of the embodiment described later, and does not mean that the present invention is limited to the configuration of the embodiment described later.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the components of a finder eyepiece unit employing the present invention. FIG. 1 illustrates a finder eyepiece window protection member 1, a light emitting element 2, a mounting board 3, and a finder block 4.

The finder eyepiece protection member 1 is provided for protecting a finder eyepiece in a window 7a (described later). In waterproof cameras that are often seen in the market in recent years,
It also has the purpose of keeping water out of the camera. The finder eyepiece window protection member 1 includes a light guide 1b. The light guide 1b is the same member as the finder eyepiece window protection member 1, and may be integrally formed with the finder eyepiece window protection member 1. With this configuration, it is possible to reduce the number of parts, simplify the assembling process, and reduce the cost.

The light emitting element 2 is mounted on a mounting substrate 3,
Flashes or turns on depending on the state of the imaging device. The state of the image capturing apparatus includes, for example, an AF ranging state (a state in which ranging is being performed, ranging is completed, ranging is not possible, and the like), a strobe charging state (incomplete charging, and the like), and the like. A mounting positioning hole 3a is opened in the mounting substrate 3, and the mounting substrate 3 can be positioned with respect to the finder block 4 by engaging the mounting positioning hole 3a with a shaft 4a provided in the finder block 4.

FIG. 2 shows a state in which the components of the finder eyepiece shown in FIG. 1 are assembled to the camera body. FIG.
FIG. 4 is a cross-sectional view of a camera in which the components of the finder eyepiece are assembled and cut along the optical axis near the finder eyepiece. In FIG. 2, the finder eyepiece window protection member 1 is fixed by adhesive or the like so as to cover a window 7a provided on the camera cover 7. on the other hand,
As described above, the mounting substrate 3 is positioned with respect to the finder block 4 by the engagement between the mounting positioning hole 3a and the shaft 4a (the mounting substrate 3 is fixed to the finder block by the double-sided tape 8). ). The positional relationship between the camera cover 7 and the finder block 4 is determined by means (not shown). Therefore, the finder eyepiece window protection 1 and the mounting board 3 are also in a predetermined positional relationship. The predetermined positional relationship is a positional relationship in which the light emitted from the light emitting element 2 cannot be visually recognized from the window 7a, and the light emitted from the light emitting element 2 attached to the mounting substrate 3
The positional relationship is such that the light enters the incident surface 1a of the light guide 1b of the finder eyepiece window protection member 1 vertically. By arranging the light emitting element 2 at a position where the light of the light emitting element 2 cannot be visually recognized from the window 7a, the light emitting element 2 and a part of the mounting board 3 cannot be seen from the window 7a, and the appearance of the product is improved. The light guide 1b has a shape avoiding the finder eyepiece 6 and the finder eyepiece holder 5, and the light guide 1b has a first reflection surface 1c and a second reflection surface 1d. Light guide 1b
The light of the light emitting element 2 incident from the light incident surface 1a is reflected by the first reflecting surface 1c and then again by the second reflecting surface 1d, and is provided within the window 7a of the camera cover 7 within the window 7a. Injected from 1e.

In this embodiment, the light guide 1b
Is provided with two reflecting surfaces. This is because the light guide 1b avoids the finder eyepiece 6 and the finder eyepiece holder 5 when guiding the light of the light emitting element 2 incident from the incident surface 1a of the light guide 1b to the emission part 1e. Is what was needed. Therefore, depending on the shape and number of the configuration that the light guide section must avoid in guiding the light of the light emitting element incident from the incident plane to the emission section, the number of the reflection surfaces provided on the light guide section is one. May be three or more.

FIG. 3 is a plan view showing the configuration of FIG. 2 as viewed from above in the figure. As is clear from FIG.
It is provided in the range of a. As a result, light is emitted from a position closer to the photographer's eye than a conventional light guide of a camera. For example, even when the surroundings are bright or in backlight, since the inside of the window 7a is darker than the surroundings, it is easy to confirm the camera state. In the case where a black field frame is provided inside the viewfinder as in a real image type viewfinder, light from the light emitting element is emitted to the side of the eyepiece so that light from the light emitting element has a black background. Will be injected into the place,
It is possible to provide a display that is easier to confirm. further,
If the projections 1e of the light guide 1b are provided with fine irregularities to form a rough surface, the emitted light can be diffused, and a display that is dazzling and easy to confirm can be provided.

In this embodiment, two types of display, that is, a strobe charging state display and an AF distance measurement state display are described as examples. However, three or more light guide portions may be provided to display three or more types. It is possible.

[0019]

According to the first aspect of the invention, the light emitted from the light emitting element enters from the entrance of the light guide, is guided by the guide means, and is guided into the window from the exit. Therefore, when checking the automatic focusing state and the charging state of the strobe condenser, the photographer does not need to temporarily remove his / her eyes from the viewfinder eyepiece, and the probability of missing a photo opportunity is reduced. Further, even in a situation where the surroundings are bright such as during the day, the inside of the window is dark, so that the state of the light emitting element can be easily recognized even if the amount of light emitted from the light emitting element is weak. Further, by providing the light guide, there is no restriction that the light emitting element must be arranged in the window frame in order to obtain the above-described effect, and the degree of freedom in design is improved.

According to the second aspect of the present invention, the light guide is formed by the same member as the protection member. According to the third aspect of the present invention, the light guide is integrally formed with the protection member, and the emission portion forms a part of the protection member. Therefore, the number of components does not increase when providing the light guide, that is, it is possible to suppress an increase in cost.

According to the fifth aspect of the invention, the light emitted from the emission section is diffused by the diffusion means. Therefore, even when the light emitting element is a point light source, the filament is not directly seen.

[Brief description of the drawings]

FIG. 1 is a perspective view of components of a finder eyepiece unit employing the present invention.

FIG. 2 is a cross-sectional view of the camera in which the components of the finder eyepiece are assembled and cut along the optical axis near the finder eyepiece.

FIG. 3 is a plan view showing the configuration of FIG. 2 as viewed from above in the figure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1: Finder eyepiece window protection member, 2: Light emitting element, 1b ...
Light guide, 7a ... window

Claims (8)

[Claims] 1. A light source, comprising: at least a window for observing a subject image; and a light emitting element, wherein light emitted by the light emitting element is emitted from the light emitting element in a finder eyepiece part invisible from the window. A light guide comprising: an incident portion provided at a position where light is incident; guide means for guiding light incident from the incident portion; and an emission portion for emitting light guided by the guide means into the window. A viewfinder eyepiece characterized by having a. 2. The device according to claim 1, wherein the window includes a protection member for protecting the finder eyepiece, and the light guide is formed of the same member as the protection member. Viewfinder eyepiece. 3. The finder eyepiece according to claim 2, wherein the light guide is formed integrally with the protection member, and the emission part forms a part of the protection member. 4. A finder eyepiece according to claim 2, wherein said guide means is a reflecting surface for reflecting light incident from said incident portion in a predetermined direction. 5. The finder eyepiece according to claim 1, wherein the emission unit includes a diffusion unit that diffuses emitted light. 6. A viewfinder eyepiece including at least a window for observing a subject image and a light emitting element that emits light based on the state of the photographing device, wherein light emitted by the light emitting element is invisible from the window. In an imaging device comprising: an incident portion provided at a position where light emitted from the light emitting element is incident; a guiding unit for guiding light incident from the incident unit; and a light guided by the guiding unit. A photographing device having a finder eyepiece, comprising: a light guide having an emission part for emitting light into the window. 7. The photographing device according to claim 6, wherein the light emitting element emits light based on a state of charge of a strobe condenser of a strobe device provided in the photographing device. apparatus. 8. The finder eyepiece according to claim 6, wherein the light emitting element emits light in accordance with a state of automatic focusing by an automatic focusing device provided in the photographing device. Shooting equipment.