JPH08201888A - Built-in flash camera - Google Patents

Abstract

(57) [Abstract] [Purpose] A red-eye reduction lamp is installed near the built-in flash of the camera to make it compact, and to prevent problems such as insufficient flash light and uneven light on the subject during flash photography. [Structure] Strobe light emitting unit 1 of built-in strobe camera 1
Reference numeral 0 is internally provided on the side of the camera body 2 opposite to the release button 7. The light emitting member 20 having a red-eye reducing function is arranged adjacent to the lower side of the strobe reflection shade 11 which constitutes the strobe light emission portion and supported by a part thereof. Further, on the front side of the camera body, the Fresnel lens 1 is used as a stroboscopic light emission characteristic conversion member that converts the stroboscopic light irradiation direction to the subject side.
3 is provided. Then, a part of this Fresnel lens is extended to the front side of the light emitting member. In addition, this light emitting member,
It is provided so as to be tilted with respect to the photographing optical axis according to the shape of the Fresnel portion 13a of the Fresnel lens.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in strobe camera having a built-in strobe (electronic flash device) for flash photography in a small camera called a compact camera or a single-lens reflex camera.

[0002]

2. Description of the Related Art Conventionally, in this type of built-in strobe camera, the strobe light emitting portion for flash photography is located on the front side of the camera body as far as possible from the taking lens of the lens barrel,
For example, it is common practice to mount the camera body on the upper side of the side opposite to the release button provided on the left side of the camera body. That is, according to this type of built-in strobe camera, when performing flash photography with light from the stroboscopic light emitting section, when a person is color photographed from the front at a short distance, the so-called pupil of the person is reproduced in red. It is well known that the red eye phenomenon may occur. Such a red-eye phenomenon is remarkable when the optical axis of the taking lens of the camera and the strobe light emitting part are close to each other, and in order to prevent this, it is necessary to maximize the distance between these taking lens and strobe light emitting part. Is.

However, in a small camera such as a compact camera, it is often difficult to prevent a gap between the optical axis of the taking lens and the stroboscopic light emitting portion, and it is difficult to avoid the occurrence of the red eye phenomenon. . For this reason, in this type of built-in flash camera, a red-eye reduction lamp is separately provided on the front side of the camera body, for example, around the lens barrel, and this red-eye reduction lamp emits light in conjunction with the strobe during flash photography. By doing so, it has been generally practiced to make the red-eye effect less noticeable.

[0004]

However, in the strobe built-in type camera as described above, when the light emitting member to be the red-eye reduction lamp as described above is attached to a part of the camera body, the attachment point becomes a problem. ing.

That is, in a camera with a built-in strobe, it has been considered to dispose a red-eye reduction lamp adjacent to the strobe light emitting portion on the upper side of one side of the camera body in which the strobe light emitting portion is provided. If you do this,
Unitization with strobe, improvement of assembling with it,
It is possible to make the camera body compact by using dead space.

However, when the light emitting member functioning as such a red-eye reducing lamp is arranged adjacent to the strobe light emitting part, for example, when the light emitting member is arranged in the strobe reflection shade, light from the strobe light emitting part is emitted. Is blocked by the light from the light emitting member, resulting in a shortage of the spectral amount.

Further, as a protection panel made of glass or the like arranged on the front surface of the strobe light emitting portion and the light emitting member as the red-eye reduction lamp, a Fresnel lens is provided on the front surface of the strobe light emitting portion and on the front surface of the light emitting member adjacent thereto. It is common to provide a plain part or a dedicated Fresnel lens,
The following problems occur. That is, the luminous flux from the strobe light emitting portion also passes through the protective panel portion such as the transparent portion on the front surface of the light emitting member, and at this time, the luminous flux from the light emitting member also passes through the same portion to the front side of the camera. Since the light is emitted, an uneven light or a strange shadow due to an overlapping portion of the light fluxes of the protection panel may appear on the subject during flash photography.

Further, in the protection panel in which the light transmitting portions corresponding to the stroboscopic light emitting portion and the light emitting member are separately formed as described above, the boundaries and joints affect the respective light emitting characteristics, and the light on the subject is affected. It may occur as unevenness, and it is desired to take some measures to solve such a problem.

The present invention has been made in view of the above circumstances, and when a light emitting member functioning as a red eye reducing lamp for reducing the red eye phenomenon during flash photography is arranged adjacent to a strobe light emitting portion. Problem, for example, the cost is increased by separately forming the light transmitting portions corresponding to the strobe light emitting portion and the light emitting member, and further, the light quantity from the strobe light emitting member is blocked by the light of the light emitting member, and the strobe light amount is insufficient. It is an object of the present invention to provide an inexpensive camera with a built-in strobe, which can eliminate problems such as light unevenness on a subject caused by mixed irradiation of light.

[0010]

In order to meet such a demand, a camera with a built-in strobe according to the present invention is provided with a strobe light emitting section provided inside a camera body and a front surface of the strobe light emitting section. A strobe irradiation characteristic conversion member by a Fresnel lens that converts the irradiation characteristics of strobe light toward the subject side is provided, and a light emitting member that functions as a red-eye reduction lamp is arranged adjacent to the strobe light emitting part,
A part of the stroboscopic light emission characteristic converting member is extended and arranged on the front surface of the light emitting member.

Here, the above-mentioned light emitting member is arranged in the vicinity of the strobe reflector which constitutes the strobe light emitting portion and is provided in a state of being supported by a part of this strobe reflector. Further, the above-described light emitting member is provided so as to be tilted with respect to the photographing optical axis in accordance with the Fresnel shape of the Fresnel lens that is the stroboscopic light emission characteristic conversion member.

[0012]

According to the present invention, by disposing the light emitting member functioning as a red-eye reducing lamp so as to be supported by the strobe reflector so as to be adjacent to the strobe light emitting portion, the light from the light emitting member is emitted from the strobe light emitting portion. Does not block light. Further, according to the present invention, the stroboscopic light emission characteristic conversion member by the Fresnel lens that changes the emission direction of the stroboscopic light is arranged across the front surface of the stroboscopic light emitting portion and the light emitting member adjacent to the stroboscopic light emitting portion, and is used as a dual purpose. , Light unevenness on the subject due to light from both does not occur.

[0013]

1 and 2 (a) and 2 (b) show an embodiment of a camera with a built-in strobe according to the present invention. In these drawings, in this embodiment, a camera indicated by reference numeral 1 in its entirety As is clear from FIGS. 1 and 2A,
The case where the camera is a lens shutter type compact camera having a photographing lens 3 held by a lens barrel in the center of the front surface of the camera body 2 is illustrated.

Here, an AF for performing automatic focusing is provided above the taking lens 3 on the front surface of the camera body 2 described above.
A pair of light emitting window 4a and light receiving window 4b in the distance measuring section, a light receiving window 5 of an AE light receiving section for automatic exposure control, and a finder window 6 of a finder optical system are provided. Reference numeral 7 in the figure denotes a release button which is provided on the upper surface of the camera body 2 so as to project to one side (left side when viewed from the front side) and which can be pressed.

Further, in FIG. 2 (a), reference numeral 8 is a camera structure portion arranged in the camera body 2, and is provided continuously, for example, in a film cassette cartridge chamber, a film winding spool chamber, and a lens barrel. A dark box, a battery power source, etc. Further, in the figure, reference numeral 9 is an electric control unit for controlling an electric drive system in the camera such as a strobe light emitting unit 10 described later, an AF distance measuring unit and an AE light receiving unit.

Reference numeral 10 denotes a strobe light emitting portion provided on a front side portion of the camera body 2 on the other side, that is, on a side upper side portion on the right side when viewed from the front side opposite to the release button. Strobe light is emitted toward the front of the camera. The strobe light emitting unit 10 is provided with a strobe reflection shade 11, a xenon tube 12 arranged inside the strobe reflection shade 11, and a front surface side of the strobe reflection shade 11 so that the irradiation characteristics of the strobe light 15 can be adjusted to the subject side. And a Fresnel lens 13, which is a stroboscopic irradiation characteristic conversion member that converts the light toward the front.

In FIG. 2A, reference numeral 14 is a camera body cover for covering the camera body, and a Fresnel lens 13 constituting the stroboscopic light emitting section 10 is fitted and arranged in an opening 14a which is opened in a part thereof. There is. Further, in this type of camera 1, various mechanical components other than those described above may be attached or incorporated in appropriate positions, but the details thereof are well known, and specific description and illustration thereof are omitted. .

According to the present invention, in the camera 1 having the above-described structure, the light emitting member provided under the strobe reflector 11 in the strobe light emitting section 10 has a function of reducing the red-eye phenomenon during flash photography. The red-eye reduction lamps 20 are arranged adjacent to each other. Here, the red-eye reduction lamp 20 is provided with a reflecting mirror 21 that regulates the irradiation characteristics of the lamp 20, and is supported below the strobe reflection shade 11 of the strobe light emitting section 10.

Then, a part of the Fresnel lens 13, which is a stroboscopic light emission characteristic converting member arranged on the front surface of the stroboscopic light emission portion 10 and converting the irradiation characteristic of the stroboscopic light 15 toward the object side, emits the stroboscopic light. The red-eye reduction lamp 20, which is a light-emitting member adjacent to the portion 10, is extended and arranged so as to completely cover the front surface.

That is, according to this structure, the red-eye reduction lamp 20 which is a light emitting member is connected to the strobe light emitting section 10.
A Fresnel lens 13 that is disposed so as to be adjacent to the strobe reflector 11 and is supported by the strobe reflection shade 11 and that covers the front surface of the stroboscopic light emitting portion 10 by actively extending so as to also cover the front surface of the red-eye reduction lamp 20. Therefore, the red-eye reduction lamp 20
Light does not block the light from the strobe light emitting section 10, thereby not impairing the strobe light 15 at the time of flash photography, and the shadow or unevenness of light is not reflected on the subject. Further, the Fresnel lens 13 can also collect the light of the red-eye reduction lamp 20.

Further, according to the above-described structure, the Fresnel lens 13 (strobe irradiation characteristic conversion member) that changes the emission direction of the strobe light 15 extends over the front surface of the strobe light emitting section 10 and the red-eye reduction lamp 20 adjacent thereto. Placed
Fresnel lens 1 because it is designed for dual use
With the function of 3, it is possible to prevent light unevenness on the subject due to light from both light emitting portions.

Here, the shape of the peripheral portion of the Fresnel lens 13, that is, the portion that covers the red-eye reduction lamp 20 may be configured so that the light distribution of the red-eye reduction lamp 20 can be more effectively extracted. A dedicated Fresnel lens section may be provided on the front surface of the reduction lamp 20 within a range that does not damage the strobe light 15.

Further, in the above-mentioned embodiment, as is apparent from FIG. 2A, the strobe light emitting portion 10 and the red-eye reduction lamp 20 are made to face two different positions of the continuous Fresnel shaped portion 13a of the Fresnel lens 13. The case where and are installed in parallel is shown. Here, the red-eye reduction lamp 20 described above
As shown in FIG. 2B, the optical axis of
If it is provided so as to be tilted with respect to the photographing optical axis in accordance with the wedge shape of the Fresnel-shaped portion 13a of the Fresnel lens 13, the light of the red-eye reduction lamp 20 is made substantially parallel to the optical axis of the photographing lens 3, and It's very easy to get to the eye. In this way, the red-eye reducing effect can be exerted.

Further, since the front surface of the red-eye reduction lamp 20 is covered with the same Fresnel lens 13 together with the stroboscopic light emitting section 10, the left and right side portions of the red-eye reduction lamp 20 can be made difficult to see from the outside of the camera 1. As a result, a good appearance of the camera can be obtained.

Here, the red-eye reduction lamp 2 which is a light emitting member.
0 is provided by tilting with respect to the photographing optical axis at an appropriate angle according to the Fresnel shape 13a of the Fresnel lens 13 which is a stroboscopic light emission characteristic conversion member, and an appropriate modification can be considered.

Needless to say, the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part of the camera 1 with built-in flash can be appropriately modified or changed. For example, in the above-described embodiment, the Fresnel shape 13a of the Fresnel lens 13 as the stroboscopic light emission characteristic conversion member that characterizes the present invention has an appropriate shape, but the present invention is not limited to this, and the stroboscopic light emitting unit 10 can be used. If the shape is such that the light from the red-eye reduction lamp 20 can be emitted to the subject side,
It is free to appropriately select and use.

In the above-described embodiment, the Fresnel lens 13 is used as the stroboscopic light emission characteristic conversion member that covers the front surface of the stroboscopic light emission portion 10 and the red-eye reduction lamp 20 as the light emission member, but it corresponds to each light emission portion. Even if the light irradiation characteristics are appropriately adjusted to different positions, a member such as the Fresnel lens 13 formed integrally, for example, a panel plate having various lens functions, a simple glass material, or a protective plate made of a synthetic resin material May be used.

Furthermore, although the lens shutter type compact camera has been illustrated in the above-described embodiments, the present invention is not limited to these and may be applied to a camera having a conventionally known structure such as a single lens reflex camera. Here, the structure of the light-emitting portion including the strobe light-emitting portion 10 and the red-eye reduction lamp 20 that is a light-emitting member adjacent to the strobe light-emitting portion 10 characterizing the present invention is
The invention is not limited to the strobe built in the camera 1, but can be applied to a detachable strobe device used separately from the camera 1.

Further, in the above-mentioned embodiment, the case where the light emitting member is the red-eye reduction lamp 20 is illustrated, but the present invention is not limited to this, and for example, the auxiliary light for obtaining the AF function is emitted even in the dark. Even an appropriate light emitting member can be applied to exert the effect.

[0030]

As described above, according to the camera with a built-in strobe according to the present invention, the strobe light emitting portion provided inside the camera body and the strobe light irradiation characteristic provided on the front surface of the strobe light emitting portion are provided. Equipped with a strobe irradiation characteristic conversion member by a Fresnel lens that converts toward the subject side, a light emitting member that functions as a red-eye reduction lamp is arranged adjacent to the strobe light emission part, and a part of the strobe irradiation characteristic conversion member is Since it is arranged so as to extend to the front surface of the member, the following advantageous effects can be obtained despite the simple structure.

By disposing the light emitting member functioning as a red-eye reducing lamp so as to be adjacent to the strobe light emitting portion and supported by the strobe reflector, it is possible to unitize strobe-related parts and improve the assembling property. Further, the camera can be made compact, and there is no problem that the light from the light emitting member blocks the light from the strobe light emitting part during flash photography, and the amount of light from the strobe light emitting part is not insufficient.

A stroboscopic light emission characteristic conversion member by a Fresnel lens for changing the emission direction of stroboscopic light is arranged across the front surface of the stroboscopic light emitting portion and the light emitting member adjacent to the stroboscopic light emitting portion, so that they can be used in common. As compared with the case where the Fresnel lens and the transparent portion are individually provided, the cost can be suppressed, and there is no possibility of causing a problem such as light unevenness on a subject due to light from both.

Since the front surface of the light emitting member is covered with the same Fresnel lens together with the stroboscopic light emitting portion, both side portions of the light emitting member can be made difficult to see from the outside of the camera, and a good appearance of the camera can be obtained. .

Here, according to the present invention, the light emitting member is arranged in the vicinity of the strobe reflector which constitutes the strobe light emitting portion and is provided in a state of being supported by a part of the strobe reflector. Further, by providing the light emitting member so as to be inclined with respect to the photographing optical axis in accordance with the Fresnel shape of the Fresnel lens that is the stroboscopic light emission characteristic conversion member, there is an advantage that the above-described effect can be further exerted.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a camera with a built-in strobe according to the present invention.

2A is a sectional view taken along the line II-II in FIG. 1, and FIG. 2B is an enlarged sectional view showing another embodiment in which an arrangement portion of a light emitting member, which is a main portion, with respect to a Fresnel lens is enlarged. Is.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera, 2 ... Camera body, 3 ... Shooting lens, 7 ... Release button, 10 ... Strobe light emission part, 11 ... Strobe reflection shade, 12 ... Xenon tube, 13 ... Fresnel lens as a stroboscopic irradiation characteristic conversion member, 13a ... Fresnel shaped part,
14 ... Camera body cover, 14a ... Opening part, 15 ... Irradiation light from strobe light emitting part, 20 ... Red-eye reduction lamp as a light emitting member, 21 ... Reflector.

Claims (5)

[Claims] 1. A camera with a built-in strobe, wherein a stroboscopic light emitting section is provided inside the camera body, wherein stroboscopic irradiation characteristics are arranged in front of the stroboscopic light emitting section and convert the irradiation characteristics of the stroboscopic light toward the subject side. A built-in strobe including a conversion member, wherein a light emitting member is arranged adjacent to the strobe light emitting portion, and a part of the strobe irradiation characteristic conversion member is arranged so as to extend to a front surface of the light emitting member. Expression camera. 2. The camera with a built-in strobe according to claim 1, wherein the light emitting member is arranged in the vicinity of a strobe reflector which constitutes a strobe light emitting section and is supported by a part of the strobe reflector. A camera with a built-in flash. 3. The camera with a built-in strobe according to claim 1 or 2, wherein the strobe light irradiation characteristic conversion member comprises a Fresnel lens. 4. The camera with a built-in strobe according to claim 1, 2, or 3, wherein the light emitting member functions as a red-eye reduction lamp. 5. The camera with a built-in strobe according to claim 3 or 4, wherein the light emitting member is provided so as to be tilted with respect to a photographing optical axis in accordance with the Fresnel shape of the Fresnel lens. camera.