JPH1188783A - Electronic camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of a harmful light to an image pickup range by providing a member to shut a light reaching other than an image pickup range of a solid-state image pickup device among lights collected by an image pickup lens and reaching the solidstate image pickup device to a front part of the solid-state image pickup device in an optical axis direction so as to eliminate the light made incident on a paste member or other range than the image pickup range of the solid-state image pickup device. SOLUTION: An opening 4c of a shutter 4 is selected nearly equal to or larger by a little than an effective image pickup range of a solid-state image pickup element 1 like a CCD or the like. When the opening 4c is open, the object light collected by a lens is formed on an image pickup range of the solid-state image pickup device 1. In this case, the light from the lens is limited by the opening 4c and reaches only the image pickup range of the solidstate image pickup device 1 and the surrounding light is shut. Thus, a ray R made incident onto other than the image pickup range of the solid-state image pickup device 1 is completely eliminated, undesired reflection is lost and a fact of fogging an image around the image or coloring of the object in other color is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic camera, and more particularly, to an electronic camera in which a solid-state image pickup device is disposed in an opening of a main body of a silver halide camera which limits a photographing area of the silver halide camera. Regarding improvement.

[0002]

2. Description of the Related Art Conventionally, the body of a silver halide camera has been used,
A solid-state imaging device was arranged at the opening of the film, and the subject image formed by the imaging lens of the silver halide camera was converted to an electric signal by the solid-state imaging device, and the subject image converted to the electric signal was subjected to image processing. Later, there are electronic cameras of the type that store in a memory device.

In this type of electronic camera, the solid-state imaging device is provided by using an opening of a camera body that restricts transfer to a film.

[0004]

In a package of a solid-state imaging device of this type of electronic camera, the imaging surface of the solid-state imaging device must be arranged at a position equivalent to the position where the exposure surface of the film originally existed. Therefore, for that purpose, it must be arranged so as to overlap in the optical axis direction with an opening for limiting the exposure of the film of the main body of the silver halide camera to the film, so that its planar size is at least,
This is smaller than the aperture that limits the exposure of the film to the film of the basic silver halide camera. The effective imaging range of the solid-state imaging device is smaller than that of the package.

For this reason, in a basic silver halide camera, in order to obtain a good image on the film, the shutter device is so arranged that sufficient light reaches the opening for exposing the film. The opening is slightly larger than the body.

For this reason, large light reaches the solid-state imaging device arranged in the opening beyond the effective imaging range.

Here, the package of the solid-state imaging device includes:
In the part other than the light capturing range, the surface of the solid-state imaging device on which the chip is mounted is gold-plated, or there is a silver paste for mounting the chip of the imaging unit,
Further, there is a lead portion for connecting the imaging unit and the outside of the package, and light outside the effective imaging range is reflected by these members, which is reflected on a cover glass or the like of a solid-state imaging device. There has been a problem that the light is harmful to the effective imaging range.

Hereinafter, the above-mentioned problems will be described more specifically and redundantly with reference to FIG. FIG. 6 is a sectional view of a main part of an electronic camera of a type in which a main body is diverted from a silver halide camera.
2 shows a part of each of a solid-state imaging device 1, a camera body 3, and a shutter 4.

The opening 3a of the camera body 3 corresponds to a shooting range of a silver halide film serving as a base. In this type of electronic camera, the imaging surface of the solid-state imaging device 1 such as a CCD must be located at a position optically equivalent to the photosensitive surface of the film.

For this purpose, a solid-state imaging device 1 such as a CCD is used.
Must overlap with the opening 3a of the main body 3 in the direction of the optical axis R, so that the solid-state imaging device 1
Must be large enough to fit inside the opening 3a of the main body 3. Inevitably, the effective imaging range 1a of the solid-state imaging device 1 (see FIG. 2 described later) is considerably smaller than the opening 3a of the main body 3.

The relationship between the planar sizes is clearly shown in FIG.

At the same time, the base plate 4a of the shutter 4 of the present invention and the opening 4c of the cover plate 4b are connected to the opening 3a of the main body 3.
The opening is slightly larger than the opening 3a of the main body 3 so as not to block the light beam passing through the main body 3.

At this time, when photographing is to be performed, first, the leading blade group of the shutter 4 (not shown) starts moving from a position covering the opening 4c of the shutter 4 to a position where it is opened. When the opening 4c of the shutter 4 is opened, a subject focused by a lens 6 (not shown) (see FIG. 1 described later) is imaged on the solid-state imaging device 1.

At this time, the light from the lens 6 reaches enough light for photographing the entire opening 3a of the camera body 3.

Then, the photographic light reaches the solid-state imaging device 1 not only in the effective imaging range 1a but also in other ranges.

Light rays R incident on the solid-state imaging device 1 outside the effective imaging range 1a are incident on the paste member 1e and other parts of the solid-state imaging device 1, and the incident light is reflected in various directions. The reflected light is reflected on the cover plate 1c of the solid-state imaging device 1, and reaches the effective imaging range 1a as unnecessary and harmful light.

These harmful lights cause phenomena that the image around the image is blurred or that the subject is colored differently.

The present invention has been made in view of the above-described aspects, and includes a light condensing by the photographing lens device and arriving at the solid-state imaging device outside the effective imaging range of the solid-state imaging device. Is shielded by a member existing forward of the solid-state imaging device in the optical axis direction, thereby preventing generation of harmful light to the effective imaging range.

[0019]

SUMMARY OF THE INVENTION Therefore, in the present invention, the above object is achieved by providing an electronic camera according to any one of the following items (1) to (6). is there.

(1) A photographic lens for forming an image of a subject, a solid-state imaging device for receiving the subject image formed by the photographic lens and converting the image into an electric signal, In an electronic camera having a memory device that records an electric signal after image processing, the light collected by the imaging lens and arriving at the solid-state imaging device outside the effective imaging range of the solid-state imaging device is transmitted to the solid-state imaging device. An electronic camera, comprising: a member that shields light ahead of the device in the optical axis direction.

(2) A photographing lens for forming an image of a subject, a solid-state image pickup device for receiving a subject image formed by the photographing lens and converting it into an electric signal, and forming an image on the solid-state image pickup device by the photographing lens. An electronic camera having a shutter device for limiting an arrival time of light to be applied and a memory device for recording an electric signal of a subject image captured by the solid-state imaging device after performing image processing on the electronic device. An electronic camera having an opening for blocking light that is condensed by the photographing lens and reaches the solid-state imaging device, outside an effective imaging range of the device.

(3) a photographic lens for forming an image of a subject, a solid-state imaging device for receiving the subject image formed by the photographic lens, and converting the image into an electric signal; In an electronic camera having a memory device that records an electric signal after image processing, a camera body that blocks light condensed by the photographing lens and reaching the solid-state imaging device outside of an effective imaging range of the solid-state imaging device. An electronic camera having a light-shielding member attached to its own light-shielding portion or another member existing around the main body or the solid-state imaging device.

(4) The electronic camera has a main body diverted from a silver halide camera, and the solid-state imaging device is arranged by using an opening for restricting photographing light of the silver halide camera. The electronic camera according to the above (1).

(5) The electronic camera has a main body diverted from a silver halide camera, and the solid-state imaging device is provided with an opening for restricting photographing light of the silver halide camera. The electronic camera according to (1).

(6) The electronic camera has a main body diverted from a silver halide camera, and the solid-state imaging device is arranged by using an opening for restricting photographing light of the silver halide camera. The electronic camera according to the above (3).

[0026]

According to the configuration of the present invention as described above, it is possible to prevent incident light beams outside the effective imaging range of the solid-state imaging device from reaching the solid-state imaging device.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail based on a plurality of embodiments.

[0028]

【Example】

(First Embodiment) FIGS. 1 to 3 show a first embodiment of the present invention.
The following describes each embodiment. FIG. 1 is an exploded perspective view of components of the digital camera according to the first embodiment, FIG. 2 is a view showing the relationship between the main body of the digital camera and the solid-state imaging device,
Is a cross-sectional view of a main part of the digital camera, showing a solid-state imaging device, a main body, and a part of a shutter.

In FIGS. 1 to 3, reference numeral 1 denotes a solid-state imaging device such as a CCD, a range 1a effective for capturing an image, a chip 1b for capturing an image, a cover plate 1c made of glass or plastic material, and a package for fixing them. 1d,
Paste material 1e for fixing chip 1d to package 1d
Etc. Reference numeral 2 denotes a circuit board to which the imaging device 1 is fixed, which is fixed to the camera body together with the solid-state imaging device 1. 3
Is a camera body diverted from a silver halide camera and has a film opening 3a.

Reference numeral 4 denotes a shutter device having a lot number 4a and a cover plate 4b, and a camera body 3 or a mirror box device 5
Fixed to Reference numeral 5 denotes a mirror box device in which a mirror or the like (not shown) is provided, and is fixed to the camera body 3. 6
Is a lens device that forms a subject image on the image forming surface of the solid-state imaging device, and is fixed or detachably fixed to the mirror box device 5.

Next, a first embodiment according to the present invention will be described with reference to FIG.
This will be described with reference to FIG.

In the first embodiment, the opening 4c of the shutter 4 is substantially equal to or slightly larger than the effective imaging range 1a of the solid-state imaging device 1.

When the electronic camera according to the present embodiment is used for photographing, the leading blade group of the shutter 4 (not shown) starts moving from a position covering the opening 4c of the shutter 4 to a position where it is opened. When the processing 4c of the shutter 4 is opened, the subject light condensed by the lens 6 forms an image on the solid-state imaging device 1. At this time, the light from the lens 6 is restricted by the opening 4c of the shutter 4, and sufficient light reaches only the effective imaging range 1a of the solid-state imaging device 1, and the surrounding light is blocked.

As described above, the photographing light has reached the conventional solid-state imaging device 1 not only in the light construction range 1a but also in other ranges. R is completely eliminated, unnecessary reflection is eliminated,
As in the related art, it is possible to prevent the image around the image from being blurred or causing a phenomenon that the subject is colored differently.

(Second Embodiment) Next, a first embodiment according to the present invention will be described.
Will be described with reference to FIG. 4 corresponding to FIG.

In the second embodiment, a part 3b of the camera body 3 has an opening substantially equivalent to or slightly larger than the effective imaging range 1a of the solid-state imaging device 1.

When taking an image with the electronic camera according to the present embodiment, first, the front blade group of the shutter 4 (not shown)
Starts moving from the position covering the opening 4c to the opening position. When the opening 4c of the shutter 4 is opened, the lens 6
Is focused on the solid-state imaging device 1 to form an image.
At this time, light from the lens 6 is transmitted to the opening 3 of the camera body 3.
b, the effective imaging range 1 of the solid-state imaging device 1
A sufficient light reaches only a, and the surrounding light is blocked.

Then, the photographing light reaches the conventional solid-state imaging device 1 not only in the light accumulation range 1a but also in other ranges. Is completely eliminated, unnecessary reflection is also eliminated, and a phenomenon in which an image around an image is blurred or a subject is given a different color as in the related art is not caused.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS.

In the third embodiment, the light-shielding member 7 attached to the camera body 3 has an opening substantially equivalent to or slightly larger than the effective imaging range 1a of the solid-state imaging device 1.

When taking an image with the electronic camera according to the present embodiment, first, the leading blade group of the shutter 4 (not shown)
Starts moving from the position covering the opening 4c to the opening position.

When the opening 4c of the shutter 4 is opened, the object focused by the lens 6 is imaged on the solid-state imaging device 1.

At this time, the light from the lens is restricted by the light blocking member 7 and sufficient light reaches only the effective imaging range 1a of the solid-state imaging device 1, and the surrounding light is blocked.

Then, the photographing light has reached the solid-state imaging device 1 not only in the light accumulation range 1a but also in other ranges. Is completely eliminated, unnecessary reflection is also eliminated, and a phenomenon that the image around the image is blurred and a subject is given a different color as in the related art is not caused.

[0045]

As described above, according to the present invention,
In the first embodiment, the opening of the shutter device disposed on the front surface of the solid-state imaging device is substantially equivalent to the size of the effective imaging range, or has a structure having a slightly larger opening. By doing so, the luminous flux outside the effective imaging range that is incident on the solid-state imaging device other than the effective imaging range is prevented from reaching the solid-state imaging device. Harmful light can be prevented.

In the second embodiment, an opening having a size substantially equivalent to or slightly larger than the effective imaging range of the solid-state imaging device is formed in a part of the camera body. Forming a portion having a light beam outside the effective imaging range that enters the solid-state imaging device other than the effective imaging range so as not to reach the solid-state imaging device. It has become possible to prevent harmful light to the area.

Further, in the third embodiment, the components existing around the solid-state imaging device, in this embodiment, the camera body, are substantially equivalent to the size of the effective imaging range of the solid-state imaging device, or Since a member having an opening having a slightly larger size is attached, a light flux outside the effective imaging range that enters the solid imaging device other than the effective imaging range is prevented from reaching the solid imaging device. It is possible to prevent harmful light from entering the effective imaging range of the solid-state imaging device.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of components of a digital camera according to a first embodiment.

FIG. 2 is a front view showing the relationship between the digital camera body and the solid-state imaging device;

FIG. 3 is a partial sectional view of the digital camera of FIG. 1;

FIG. 4 is a sectional view of a main part of a digital camera according to a second embodiment.

FIG. 5 is a sectional view of a main part of a digital camera according to a third embodiment.

FIG. 6 is a sectional view of a main part of a conventional digital camera.

[Explanation of symbols]

 Reference Signs List 1 solid-state imaging device such as CCD 2 circuit board 3 camera body 4 shutter device 5 mirror box device 6 lens device 7 light shielding member

Claims (6)

[Claims] An imaging lens for forming an image of a subject,
In a solid-state imaging device that receives a subject image formed by the photographing lens and converts it into an electric signal, and an electronic camera having a memory device that records the electric signal of the subject image captured by the solid-state imaging device after performing image processing, The solid-state imaging device further includes a member that blocks light that is condensed by the imaging lens and reaches the solid-state imaging device outside the effective imaging range of the solid-state imaging device in the optical axis direction ahead of the solid-state imaging device. And electronic camera. 2. A photographing lens for forming an image of a subject,
A solid-state imaging device that receives a subject image formed by the photographing lens and converts the image into an electric signal; a shutter device that limits the arrival time of light formed on the solid-state imaging device by the photographing lens; and the solid-state imaging device In an electronic camera having a memory device that records an electric signal of an object image captured after image processing after the image processing, the shutter device is focused by the imaging lens outside the effective imaging range of the solid-state imaging device. An electronic camera having an opening for blocking light reaching the solid-state imaging device. 3. A photographing lens for forming an image of a subject,
In a solid-state imaging device that receives a subject image formed by the photographing lens and converts it into an electric signal, and an electronic camera having a memory device that records the electric signal of the subject image captured by the solid-state imaging device after performing image processing, Outside the effective imaging range of the solid-state imaging device, a light-shielding portion of the camera body itself that blocks light that is collected by the photographing lens and reaches the solid-state imaging device, or other light that exists around the main body or the solid-state imaging device. An electronic camera having a light-blocking member attached to the member. 4. The electronic camera according to claim 1, wherein a main body of the electronic camera is diverted from a silver halide camera, and the solid-state imaging device is arranged by using an opening for restricting photographing light of the silver halide camera. Item 10. The electronic camera according to item 1. 5. The electronic camera according to claim 2, wherein a main body of the electronic camera is diverted from a silver halide camera, and the solid-state imaging device is provided with an opening for restricting a photographing light of the silver halide camera. Electronic camera. 6. The electronic camera according to claim 1, wherein a main body of the electronic camera is diverted from a silver halide camera, and the solid-state imaging device is arranged by using an opening for limiting photographing light of the silver halide camera. Item 3. The electronic camera according to Item 3.