JP3388399B2 - Aimed reflector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly applied to distant opponents using a reflecting mirror, such as when a victim in the sea or mountains sends an optical signal to a search aircraft, a ship, or other searchers. The present invention relates to a reflecting mirror suitable for transmitting an optical signal.

[0002]

2. Description of the Related Art Generally, for example, when a victim is informing a searcher of his / her location, a reflecting mirror is provided as an instrument for informing a distant partner of an optical signal reflecting sunlight.
As a reflecting mirror for life saving, a certain standard is set for flatness and the like.

Further, in this type of reflecting mirror, when the irradiation position of the reflected light is dark and relatively close, the irradiation position can be visually confirmed from the irradiation side, but the irradiation position is far away. When there is light or is bright, for example, when sunlight is reflected on a distant ship or an aircraft in the sky to send an optical signal, it is impossible to determine where the reflected light is directed from the irradiation side.

In such a case, as a sight for directing the reflected light to the target object, conventionally, as shown in FIG . 5 and FIG. 6 , the one in which the light transmitting portion 2 is opened in the central portion of the reflecting mirror 1 is known. Has been. As shown in FIG. 7 , the incident light a from the sun 3 is irradiated onto a nearby object through the light transmitting portion 2 to form an aiming irradiation mark 4, and the aiming irradiation mark 4 is provided on the back surface of the reflecting mirror 1. At the same time as seeing with the eyes 5, the object 6 is seen through the light transmitting portion 2, and at this time, the angle of the reflector is adjusted so that the object 6 and the aiming irradiation mark 4 can be seen at the same time. As a result, the sun reflected light b from the surface of the reflecting mirror 1
Is directed to the target object 6.

[0005]

In such a conventional reflecting mirror with a sight, when the sight is set, the sighting irradiation mark 4 reflected on the back surface of the mirror is seen, and at the same time the object is placed in the light transmitting portion 2. There is a problem that the aiming work is extremely troublesome because the aiming irradiation mark 4 has to be reflected to the position of the light transmitting portion 2 where there is no mirror surface when it is necessary to place it and when the aiming is correct.

In view of such conventional problems, the present invention provides a reflecting mirror with a sight capable of irradiating the reflected light of the sun easily and accurately even when the object is in the sky. It was made for the purpose.

[0007]

The features of the aiming reflecting mirror according to the present invention for solving the above-mentioned conventional problems and achieving the intended object are that a transparent plate having front and back surfaces parallel to each other is flat. Fine particles for retroreflecting incident light on the rear surface side of the transparent plate of the light transmitting portion, where a light transmitting portion without a reflecting film is provided on a part of the reflecting surface on which the reflecting film is applied to the front surface side. Aiming reflector with sparsely-shaped reflective spheres
The fine-grained reflective spheres have an average particle size of 40 μm to 65 μm.
Used on the back surface of the transparent plate of the light transmitting part
A mesh material with a space of about 2 mm is placed in parallel with the transparent plate.
Then, the reflective sphere is provided on the surface of the wire material constituting the net material.
Adhere and sandwich the mesh material on the back side of the transparent plate.
The back cover plate with at least the light of the back cover plate.
The reason is that the portion corresponding to the transparent portion is made transparent .

[0008]

DETAILED DESCRIPTION OF THE INVENTION Next, a first embodiment of the present invention will be described with reference to FIG.
4 will be described.

In the figure, 10 is a reflecting mirror according to the present invention. In this reflecting mirror 10, a transparent film 11 made of acrylic is coated on the back surface with a reflecting film having a reflecting surface 12 on the front surface side. It is designed to reflect light from.

A light transmitting portion 13 having no reflective film is formed in the central portion of the reflecting surface 12, a net material 14 made of wire mesh is laid on the back surface side of the light transmitting portion 13, and the transparent plate 11 is provided on the back surface side. A back surface covering plate 15 made of a transparent material having the same shape as that of the above is overlapped, and a light shielding film 16 is applied to the back surface except the portion corresponding to the light transmitting portion 13.

As the mesh member 14, for example, a wire member constituting the mesh member has a diameter of 0.3 mm and a mesh size, that is, a distance between wire members constituting the mesh member is about 2 mm.

A large number of fine-grained beads 17 are attached to the surface of the wire material constituting the net material 14. The beads 17 are retroreflected with respect to the light incident thereon, that is, as shown in FIG. 3, the incident light a to the beads 17 is reflected as reflected light b in parallel therewith. As an example thereof, a value mutan titanate-based glass having a refractive index of 1.926 to 1.933, a specific gravity of 4.16 and an average particle size of 40 μm to 65 μm is used.

Generally, the highest retroreflection has a refractive index of 1.
It is known to be obtained with 93 glass beads.

The aiming principle of the reflecting mirror configured as described above will be described with reference to FIG. In the figure, A1-O1-B is an incident optical path from the sun to the reflecting surface 12 through the transparent plate 11, and B-O2-C is reflected by the reflecting surface 12 to form the transparent plate 11.
It is a reflected optical path that passes through to reach the object.

In this state, the incident light a which reaches the beads 17 through the light transmitting portion 13 having no reflection film has an optical path A2-O3-.
O4-D1 is reflected by E of beads 17, and D2-O5-O
The reflected light b passes through the optical path of 6-A3. This reflected light b
Is partially reflected on the back surface of the transparent plate 11. The reflected light c (O5-F) has the same angle as the irradiation light d (O2-C) reflected by the reflecting surface 12 and reaching the object 6.

That is, since A1-O1 and A2-O3 are parallel to each other, A1-O1 and O4-D1 are parallel to each other, and the beads 17 are retroreflective, so that O4-D1 and O4-D1 are parallel to each other.
2-O5 is parallel, and O5-F reflected by it is
Since A1-O1 and D2-O5 are parallel, they are parallel to O2-C.

Therefore, by observing the target object 6 with the eyes 5 placed at the F position, the reflected light c and the target object 6 can be seen to overlap each other. In other words, the irradiation light d is directed to the target object 6 by superimposing the target object 6 and the reflected light c on each other through the light transmitting portion 13.

Since the beads 17 on the rear surface of the transparent plate 11 are sparsely installed, the object can be seen through the light transmitting portion 13, and the rear surface side of the transparent plate can be reflected by a large number of beads 17. The reflected light c reaching the
It appears to form a circular area with a pale glow that imitates the sun.

When using the reflecting mirror constructed as described above, the object 6 is seen with the eyes 5 through the light transmitting portion 13 as shown in FIG. Then, the incident light a transmitted through the transmission part 13
The angle of the reflecting mirror is adjusted so that the reflected light c reflected by the beads 17 and reflected by the back surface of the transparent plate 11 overlaps with the target 6. At this time, in the eye 5, the sun is recognized in the light transmitting portion 13 as if it is shining with round light. As a result, the irradiation light d is directed to the target object.

Further, the beads to be used are not limited to the above-mentioned ones as long as they have a retroreflective property, and those having a low retroreflective performance can be aimed at an object at a short distance. But you can use it.

[0021]

【The invention's effect】 As mentioned above, the sighted object according to the present invention
In the case of a mirror, the front and back sides are parallel and the back side of a flat transparent plate
Part of the reflective surface with the reflective film applied to the front side
A light-transmitting part without a reflective film is provided on the transparent plate of the light-transmitting part.
On the back side, a fine-grained reflective sphere that retroreflects incident light
By arranging in a sparse state, through the light transmission part
Visually inspect the target object, adjust the angle of the reflector in this state,
Make the sunlight passing through the ball into the light transmitting part
This allows the reflected light from the reflector to be accurately aimed at the target.
And the whereabouts of the reflected light from the reflector are not visible.
Even in a possible situation, it is possible to irradiate a target object easily and accurately.

Further, a mesh material is arranged on the back surface of the transparent plate of the light transmitting portion substantially in parallel with the transparent plate, a reflecting sphere is attached to the mesh material, and the mesh material is provided on the back side of the transparent plate. By stacking the back cover plates on both sides and making at least a portion of the back cover plate corresponding to the light transmitting portion transparent, it is possible to install the reflective spheres in an appropriate amount and at an appropriate installation interval. It will be easy.

Further, by forming the reflecting sphere with glass beads having a refractive index of about 1.93, a reflecting mirror capable of aiming with high precision can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a reflecting mirror with a sight according to the present invention.

FIG. 2 is a vertical sectional view of the above.

FIG. 3 is an optical path diagram showing a retroreflection state of a reflecting sphere used in the embodiment shown in FIG.

FIG. 4 is an optical path diagram showing a sighting state in the reflecting mirror of the embodiment shown in FIG.

FIG. 5 is a plan view showing a conventional aiming reflector.

FIG. 6 is a vertical sectional view of the above.

FIG. 7 is an optical path diagram showing an aiming state of the above.

[Explanation of symbols]

a incident light b reflected light c reflected light d Irradiation light 5th 6 objects 10 Reflector 11 Front side transparent plate 12 Reflective surface 13 Light transmission part 14 Net material 15 Back coated plate 16 Light-shielding film 17 beads

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Claims (2)

(57) [Claims] 1. A transparent plate whose front and back surfaces are parallel to each other and is flat,
A light-transmissive part without a reflective film is provided on a part of the reflective surface where the reflective film is applied toward the front side, and the fine-grained reflection that retroreflects the incident light on the rear surface side of the transparent plate of the light-transmissive part. In a reflecting mirror with spheres arranged sparsely , fine-grained reflective spheres with an average particle size of 40 μm to 65 μm
The space between the wire rods on the back surface of the transparent plate of the light transmission part is used.
A mesh material having a diameter of about 2 mm is arranged substantially parallel to the transparent plate,
Attaching the reflective sphere to the surface of the wire that constitutes the net material
And the back side of the transparent plate with the mesh material sandwiched between them.
A surface-coated plate is overlaid, and at least the light-transmittance of the back-coated plate is adjusted.
A reflecting mirror with a sight, which is characterized by allowing the parts corresponding to the parts to transmit light. 2. The reflective sphere is a glass plate having a refractive index of about 1.93.
5. The sighted reflector according to claim 1 , which is a laser beam.