JP2009086266A - Adapter for short-distance photographing used for underwater case for camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter for short-distance photographing used for an underwater case for a camera, which never causes the shadow of the lens covering cylindrical part of the underwater case for the camera in a subject, when the short-distance photographing under water is performed and is suitable for the short-distance photographing. <P>SOLUTION: The adapter 1 for the short-distance photographing used for the underwater case 21 for the camera, which is provided with the lens covering cylindrical part 23 covering the lens part 32 of the camera 31 with a built-in strobe 33, in a light transmissible state with respect to an objective lens and a strobe light transmission window 24 and covers the whole circumference of the built-in camera 31 is provided with: an attachment part 2 detachably attached to the circumference of the lens covering cylindrical part 23; a reflection part 6 which is continuous to the attachment part 2 and arranged to face the light irradiation area of the built-in strobe 33 and reflects light from the built-in strobe 33; and a diffusion part 9 which diffuses the light from the built-in strobe 33 and the light reflected from the reflection part 6, to radiate the light to the front of the lens covering cylindrical part 23. The adapter 1 for the short-distance photographing is integrally provided with a strobe light radiating part 5 surrounding both sides of the reflection part 6 and the diffusion part 9 by a pair of side plate parts 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a short-distance photographing adapter used for an underwater case for a camera.

  For example, as shown in FIG. 8, when a digital camera 51 having a built-in strobe 52 is housed in a camera underwater case 61 and a subject 71 is photographed underwater in this state, the built-in strobe 52 is built in because the amount of light is small in water. Usually, the strobe 52 is caused to emit light to perform photographing.

  In this case, part of the strobe light from the built-in strobe 52 is obtained when the subject 71 and the distance between the underwater case 61 for the camera and the front end surface of the lens-covered cylindrical portion 62 are close to each other such as 10 cm. As a result, the subject 71 cannot be illuminated brightly by being blocked by the lens covering cylinder 62. As a result, as shown in FIG. 9, the captured image 81 of the subject 71 includes a shadow portion 62a of the lens covering cylinder 62. As a result, there is a problem that a high-quality captured image 81 cannot be obtained. In FIG. 8, θ is the flash light irradiation angle of the built-in flash.

  Patent Document 1 discloses an underwater shooting adapter that includes a light guide unit that detachably guides light from a built-in strobe to a position near the front of a close-up lens for a waterproof case that houses a camera with a built-in strobe. Proposed.

In the case of this patent document 1, although the light from the strobe can be guided to a position near the front of the close-up lens, the adjustment of the irradiation range of the light from the built-in strobe to the subject is not considered.
JP 2005-148282 A

  The problem to be solved by the present invention is that when a camera with a built-in strobe is accommodated in a camera underwater case and the subject is photographed in close proximity under the light of the built-in strobe, the lens of the camera underwater case There is no short-distance photographing adapter used for an underwater case for a camera that does not cause a shadow of the covering cylinder part and can adjust the irradiation range of the light from the strobe to the subject.

  The present invention includes a lens-covered tube portion that covers a lens barrel portion of a built-in camera with a strobe in a state where light can be transmitted to an objective lens, and a strobe light transmission window, and covers the entire outer periphery of the built-in camera. A short-distance shooting adapter for use in an underwater case, a mounting portion that is detachably mounted on the outer periphery of the lens-covered cylindrical portion, and is connected to the mounting portion and faces the light irradiation area of the strobe. A reflecting portion that reflects the light from the strobe disposed and a diffusion portion that diffuses the light from the strobe and the reflected light from the reflecting portion and radiates it in front of the lens-covered cylindrical portion, the reflecting portion, The most important feature is that a strobe light emitting portion in which both sides of the diffusing portion are surrounded by a pair of side plate portions is integrally provided.

  According to the first aspect of the present invention, when close-up shooting of a subject is performed underwater with a built-in strobe light, the shadow of the lens-covered cylindrical portion is not generated on the subject, and the shadow portion of the lens-covered cylindrical portion is included. It is possible to provide a short-distance photographing adapter for use in an underwater case for a camera capable of obtaining a good quality close-up photographed image without any problems.

  According to the second aspect of the present invention, a reflection part that reflects light from the strobe toward the front of the lens-covered cylinder part at a certain angle is provided, and the light from the strobe and the light just above the transmission window. A water for a camera having the same effect as that of the invention according to claim 1, comprising a diffusing portion in which an inclined piece and a vertical piece diffusing reflected light from the reflecting portion and radiating the reflected light from the lens covering tube portion are connected. It is possible to provide a short-distance photographing adapter used for the middle case.

  According to a third aspect of the present invention, a reflection portion that reflects light from the strobe at a different angle toward the front of the lens-covered cylinder portion is provided, and the light from the strobe and the reflection are directly above the transmission window. In a configuration comprising a diffusing unit that connects an inclined piece and a vertical piece that diffuses reflected light from the unit and radiates it in front of the lens-covered cylinder unit, the same effect as the invention of claim 1 is achieved, and Camera underwater capable of optimizing the irradiation area in front of the lens-covered cylinder part according to the subject within a relatively close range and obtaining a good close-up image without the shadow part of the lens-covered cylinder part It is possible to provide a short-distance photographing adapter used for the case.

  In the present invention, when a camera with a built-in strobe is housed in an underwater case for a camera and a subject is photographed in close proximity under the light of the built-in strobe, a shadow of the lens-covered tube portion of the underwater case for the camera is generated on the subject. The objective of providing a short-distance shooting adapter for use in an underwater case for a camera that can be adjusted and the irradiation range of the light from the strobe to the subject is provided. Provided with a lens cover cylinder that covers the lens barrel in a state where light can be transmitted to the objective lens, and a strobe light transmission window that emits the strobe light provided above the lens barrel, and the entire outer periphery of the built-in camera A short-distance shooting adapter for use in a camera underwater case that covers the lens, and is detachably attached to the outer periphery of the lens-covered cylindrical portion. And an upper portion of the mounting portion, and is arranged facing the light irradiation area of the strobe, and reflects light from the strobe toward the front of the lens-covered cylinder portion at the upper end portion, and a reflection angle A reflecting portion pivotally supported in a variable state, and diffuses light from the strobe and reflected light from the reflecting portion directly above the transmission window to the front of the lens-covered cylinder portion. This is realized by a configuration in which a diffusing portion in which a radiating inclined piece and a vertical piece are connected is provided, and a strobe light emitting portion in which both sides of the reflecting portion and the diffusing portion are surrounded by a pair of side plate portions are provided integrally.

  Hereinafter, a short-distance photographing adapter used for an underwater case for a camera according to an embodiment of the present invention will be described in detail with reference to the drawings.

Example 1
A short-distance photographing adapter used for the underwater case for a camera according to the first embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 to 4, the short-distance photographing adapter 1 according to the first embodiment constitutes an underwater case 21 for a camera that houses therein a camera 31 having a built-in strobe 33 such as a digital camera. The case body 22 is configured to be detachable from the substantially cylindrical lens-covered cylinder portion 23, and reflects and diffuses light from the built-in strobe 33 and radiates it to the front near-distance area of the lens-covered cylinder portion 23. is there. In FIG. 4, θ is a strobe light irradiation angle.

  The underwater case 21 for a camera covers a lens portion (lens barrel portion) 32 of a camera 31 having a built-in strobe 33 on the front side of the case body 22 in a state where light can be transmitted to the objective lens in the lens portion 32. The covering cylinder part 23, the stroboscopic light transmission window 24 from the built-in strobe 33, and the case shoe part 25 for mounting an external strobe (not shown) are arranged in a line from the bottom to the top.

  A short-distance photographing adapter 1 according to the first embodiment is connected to a circular mounting portion 2 that is detachably mounted on the outer periphery of the lens-covered cylindrical portion 23, and is connected to an upper side of the mounting portion 2 and The strobe light radiating portion 5 arranged facing the light irradiation area of the built-in strobe 33 is integrated, and the lower end edge of the mounting portion 2 has a semicircular shape as a whole, and the upper end side of the strobe light radiating portion 5 has a rectangular shape. It has a substantially box shape.

  The mounting portion 2 includes a circular mounting hole 3 into which the lens covering tube portion 23 of the underwater case 21 for camera can be fitted, and an engaging portion 4 provided on the inner peripheral wall of the mounting hole 3. As shown in FIGS. 2 and 3, the hole 3 is fitted into the lens-covered cylinder portion 23 in a lateral position, and is rotated, for example, 90 degrees clockwise, so that the engagement portion 4 is moved to the tip of the lens-covered cylinder portion 23. By engaging with an engagement receiving portion 23a provided on the outer periphery, the short-distance photographing adapter 1 is mounted and fixed to the front surface of the case main body 22 as shown in FIG. At this time, an engagement concave portion (not shown) provided in the mounting portion 2 engages with a protrusion 23b provided in the portion of the engagement receiving portion 23a of the lens-covered cylindrical portion 23, and thereby, a short distance. The shooting adapter 1 is attached to the front surface of the case body 22 with a click feeling.

  The strobe light radiating portion 5 includes a quadrangular reflecting portion 6 that reflects light from the built-in strobe 33 at a certain angle toward the front of the lens-covered tube portion 23 at an upper end portion, and also transmits the light. A quadrangular inclined piece 7 and a quadrangular vertical piece 8 that diffuse the light from the built-in strobe 33 and the reflected light from the reflecting portion 6 and radiate it in front of the lens-covered cylindrical portion 23 immediately above the window 24. A continuous diffusion unit 9 is provided.

  Further, the strobe light radiating unit 5 is a pair of side plates that are vertically long on both sides of the reflecting unit 6 and the diffusing unit 9 and have edge shapes corresponding to the arrangement of the inclined piece 7, the vertical piece 8, and the mounting unit 2. The structure is surrounded by the parts 10 and 10.

The reflection part 6, the inclined piece 7, the vertical piece 8, and the side plate part 10 are made of, for example, a synthetic resin material having light diffusibility. Further, the inner surface of the reflecting portion 6 facing the irradiation area of the strobe light is a mirror surface such as white, gold, or silver. In particular, the inner surface of the reflecting portion 6 facing the irradiation area of the strobe light is made of gold or the like so that the color temperature of the reflected light is changed and the irradiation light on the subject 11 is made reddish. The color tone of 11A can be adjusted.
Further, by forming the reflective portion 6, the inclined piece 7, the vertical piece 8, and the side plate portion 10 with a translucent white material containing a light diffusing member, it is possible to obtain efficient diffused light. The diffused light is guided to a region near the mounting hole 3, and the diffused light is irradiated from the front or above the subject 11 existing at a very close position (for example, 1 cm, 2 cm, etc.) in front of the mounting hole 3. In addition, it is possible to obtain a captured image 11A with good image quality.

Next, a close-up shooting operation for the subject 11 using the short-distance shooting adapter 1 according to the first embodiment will be described with reference to FIGS.
As shown in FIG. 4, the camera 31 having the built-in strobe 33 is housed in a camera underwater case 21, and in this state, the built-in strobe 33 emits light to perform close-up shooting of the subject 11. At this time, a part of the light from the built-in strobe 33 reaches the mirror surface of the reflecting portion 6, is reflected here, reaches the inclined piece 7 and the vertical piece 8, and is diffused to the subject 11 in front of the lens covering cylinder portion 23. Is irradiated.

  Further, the light directly reaching the inclined piece 7 and the vertical piece 8 from the built-in strobe 33 is diffused by the inclined piece 7 and the vertical piece 8 and irradiated to the subject 11 in front of the lens covering cylinder portion 23.

  As a result, the surface of the subject 11 that does not receive direct light from the built-in strobe 33 that is blocked by the lens-covered cylinder portion 23 is also illuminated brightly by the above-described diffused light, and does not cause a shadow by the lens-covered cylinder portion 23. It becomes a state.

  By performing the close-up photography in the aspect of the first embodiment as described above, as shown in FIG. 5, the photographed image 11 </ b> A of the subject 11 is excellent in that the shadow portion of the lens covering cylinder portion 23 does not appear on the surface. It has image quality.

(Example 2)
A short-distance shooting adapter 1A used in the underwater case for a camera according to the second embodiment will be described with reference to FIGS.

  The short-distance photographing adapter 1A according to the second embodiment has substantially the same configuration as the short-distance photographing adapter 1 according to the first embodiment. The detailed explanation is omitted.

  As shown in FIGS. 6 and 7, the short-distance shooting adapter 1 </ b> A according to the second embodiment reflects light from the built-in strobe 33 instead of the reflecting unit 6 having a mirror surface in the strobe light emitting unit 5. It is characterized by comprising a reflecting portion 6A having a mirror surface that is pivotally supported so that the angle can be varied.

  That is, the reflecting portion 6A, the vertical piece 8 and the side plate portion 10 are separated from each other, and small-sized engagement protrusions 6b and 6b are provided at the corners on both sides of the reflecting portion 6A, and the pair of side plate portions 10 and 10 are provided. Are provided with small-sized engaging recesses 10a and 10a into which the engaging protrusions 6b and 6b are inserted, at positions corresponding to the corners on both sides of the reflecting part 6A. 10a is engaged with each other so that the reflecting portion 6A is rotatably supported with the engaging recesses 10a and 10a as fulcrums.

  Accordingly, the reflecting portion 6A manually reflects the light from the built-in strobe 33 as shown in the irradiation angles α1, α2, α3,... As shown in FIG. 8 is further diffused by the inclined piece 7 and the vertical piece 8 to irradiate the subject 11.

  In the short-distance shooting adapter 1A according to the second embodiment, the configuration other than the reflecting portion 6A is the same as that of the short-distance shooting adapter 1 according to the first embodiment.

  The short-distance shooting adapter 1A according to the second embodiment can exhibit the same operations and effects as those of the short-distance shooting adapter 1 according to the first embodiment. The light from the built-in strobe 33 is reflected at different angles such as irradiation angles α 1, α 2, α 3, etc., reflected and irradiated to the inclined piece 7 and the vertical piece 8, and further diffused by the inclined piece 7 and the vertical piece 8. It is configured to irradiate the subject 11.

  Therefore, as shown in FIG. 6, the irradiation range (irradiation distance) of the diffused light to the subject 11 in front of the lens covering cylinder portion 23 is set to the distances L1, L2, L3,. The lens-covered tube can be adjusted by optimizing the irradiation area of the diffused light on the subject 11 within a relatively short distance, for example, several centimeters to several tens of centimeters from the tip of the lens-covered tube portion 23. It is possible to shoot a subject image having good image quality that does not cause a shadow by the unit 23.

  The close-up shooting adapter of the present invention is suitable for close-up shooting in water using an underwater case for cameras, and is attached to a lens barrel of a normal strobe camera without using an underwater case. The present invention can also be suitably applied when shooting.

It is a perspective view which shows the adapter for short-distance photography used for the underwater case for cameras which concerns on Example 1 of this invention, and an underwater case. It is a perspective view which shows the state before mounting | wearing with the underwater case for cameras of the short distance photography adapter which concerns on the present Example 1. FIG. It is a perspective view which shows the horizontal mounting state with respect to the underwater case for cameras of the short distance photography adapter which concerns on the present Example 1. FIG. It is a schematic sectional drawing which shows the reflection and the spreading | diffusion state of strobe light of the state which mounted | wore the underwater case for cameras with the short distance photography adapter which concerns on the present Example 1. FIG. It is a figure which shows an example of the to-be-photographed object image | photographed in the state which mounted | wore the underwater case for cameras with the short distance photography adapter which concerns on the present Example 1. FIG. It is a schematic sectional drawing which shows the state which mounted | wore with the underwater case for cameras which concerns on Example 2 of this invention, and the reflection and the spreading | diffusion state of strobe light. It is a partial exploded perspective view which shows the structure of the reflection part in the adapter for short distance imaging | photography concerning a present Example. It is explanatory drawing which shows the irradiation angle of the flash light by the built-in flash of the camera accommodated in the conventional underwater case for cameras. It is the schematic which shows the picked-up image example of the to-be-photographed object image | photographed with the built-in flash emission state of the camera accommodated in the conventional underwater case for cameras.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adapter for short-distance photography 1A Adapter for short-distance photography 2 Mounting part 3 Mounting hole 4 Engagement part 5 Strobe light emission part 6 Reflection part 6A Reflection part 6b Engagement protrusion 7 Inclination piece 8 Vertical piece 9 Diffusion part 10 Side plate part 10a Engagement recess 11 Subject 11A Captured image 21 Underwater case for camera 22 Case body 23 Lens covering tube part 23a Engagement receiving part 23b Protrusion 24 Transmission window 25 Case shoe part 31 Camera 32 Lens part 33 Built-in strobe θ Strobe light irradiation angle α1, α2, α3 Irradiation angle L1, L2, L3 distance

Claims (3)

An underwater case for the camera that covers the entire outer periphery of the built-in camera, as well as a lens-covered tube that covers the lens barrel of the built-in camera with a strobe so that light can be transmitted through the objective lens, and a strobe light transmission window A short-distance shooting adapter to be used,
A mounting portion that is detachably mounted on the outer periphery of the lens-coated cylinder portion;
The lens-covered cylinder is connected to the mounting portion and reflects the light from the strobe disposed so as to face the light irradiation area of the strobe, and diffuses the light from the strobe and the reflected light from the reflection portion. A stroboscopic light radiating part comprising a diffusing part that radiates in front of the part, wherein the reflecting part and both sides of the diffusing part are surrounded by a pair of side plate parts;
A short-distance shooting adapter for use in an underwater case for cameras, characterized in that it is integrally provided. A lens-covered tube portion that covers the cylindrical lens barrel portion of the built-in camera with a strobe in a state where light can be transmitted to the objective lens, and a stroboscopic light transmission window that the strobe light provided on the lens barrel portion emits. A short-distance shooting adapter used for an underwater case for a camera that covers the entire outer periphery of a built-in camera,
A circular mounting portion that is detachably mounted on the outer periphery of the lens-covered cylindrical portion;
A reflection part that is connected to the upper side of the mounting part and is arranged so as to face the light irradiation area of the strobe, and that reflects light from the strobe toward the front of the lens-covered cylinder part at a certain angle at the upper end part. Comprising a diffusing unit that connects an inclined piece and a vertical piece that diffuses the light from the strobe and the reflected light from the reflecting unit and radiates the light to the front of the lens-covered cylindrical unit, directly above the transmission window; A strobe light radiating part that surrounds both sides of the reflecting part and the diffusing part with a pair of side plate parts;
A short-distance shooting adapter for use in an underwater case for cameras, characterized in that it is integrally provided. A lens-covered tube portion that covers the cylindrical lens barrel portion of the built-in camera with a strobe in a state where light can be transmitted to the objective lens, and a stroboscopic light transmission window that the strobe light provided on the lens barrel portion emits. A short-distance shooting adapter used for an underwater case for a camera that covers the entire outer periphery of a built-in camera,
A mounting portion that is detachably mounted on the outer periphery of the lens-coated cylinder portion;
It is connected to the upper side of the mounting portion, and is disposed so as to face the light irradiation area of the strobe. The light from the strobe is reflected toward the front of the lens covering tube portion at the upper end portion, and the reflection angle is variable. A tilting portion that is pivotally supported in a rotating state and diffuses the light from the strobe and the reflected light from the reflecting portion directly above the transmission window and radiates it forward of the lens-covered tube portion A stroboscopic light emitting unit comprising a diffusing unit in which a piece and a vertical piece are connected, and the reflective unit, and both sides of the diffusing unit surrounded by a pair of side plates;
A short-distance shooting adapter for use in an underwater case for cameras, characterized in that it is integrally provided.

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