JP2001247081A - Reflecting mirror with collimator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reflecting mirror with a collimator capable of easily and accurately irradiating the reflected light of the sun even when an object exists in the sky. SOLUTION: A light transmissive part 13 having no reflecting film is arranged in a part of a reflecting surface 12 for laying a reflecting film toward the surface side on the reverse of a transparent plate 11 having parallel and flat obverse-reverse both surfaces, and a particulate-like reflecting sphere 17 for recursively reflecting the incident light is arranged in a sparse state on the reverse side of the transparent plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of a reflector for distant opponents, such as when a victim in the sea or a mountain sends an optical signal to a search aircraft, a ship, or another searcher. The present invention relates to a sighted reflector suitable for transmitting an optical signal.

[0002]

2. Description of the Related Art In general, for example, when a distressed person informs a searcher of his / her location, a reflector is known as a device for notifying a distant partner of an optical signal reflecting sunlight.
For life-saving reflecting mirrors, a certain standard is set for flatness and the like.

In this type of reflecting mirror, when the irradiation position of the reflected light is dark and relatively close, the irradiation position can be confirmed visually from the irradiation side, but the irradiation position is far away. When it is bright or bright, for example, when the light signal is sent by reflecting sunlight to a distant ship or an aircraft in the sky, it is not possible to determine where the reflected light is directed from the irradiation side.

In such a case, as a sight for directing the reflected light toward the target, conventionally, as shown in FIGS. 7 and 8, a light-transmitting portion 2 is opened at a central portion of a reflecting mirror 1. Have been. As shown in FIG. 9, as shown in FIG. 9, the incident light a from the sun 3 is irradiated to a nearby object through the light transmitting portion 2 to form the aiming irradiation mark 4, and the aiming irradiation mark 4 is placed on the back surface of the reflecting mirror 1. At the same time that the target object 6 is viewed through the light transmitting portion 2 and the target object 6 is viewed, the angle of the reflecting mirror is adjusted so that the target object 6 and the aiming irradiation mark 4 overlap and can be viewed simultaneously. Thereby, the sun reflected light b from the surface of the reflecting mirror 1
Are directed to the object 6.

[0005]

In such a conventional sighted reflecting mirror, when aiming, an aiming irradiation mark 4 reflected on the back surface of the mirror is viewed, and at the same time, an object is placed in the light transmitting portion 2. The aiming work is extremely troublesome because the aiming irradiation mark 4 has to be reflected at the position of the light transmitting portion 2 having no mirror surface in a state where the aiming is required, and the aiming is required.

The present invention has been made in view of such a conventional problem, and provides an aiming reflector capable of easily and accurately irradiating reflected light of the sun even when an object is in the sky. It was made for the purpose of.

[0007]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above and to achieve the intended object, the aiming reflector according to the present invention is characterized by a flat transparent plate having both front and back surfaces parallel to each other. A light-transmitting portion without a reflective film is provided on a part of the reflective surface on which a reflective film is applied to the back surface facing the front surface, and fine particles for retroreflecting incident light on the transparent-plate rear surface side of the light-transmitting portion are provided. That is, the reflection spheres are arranged in a sparse state.

A mesh material is provided on the back surface of the transparent plate of the light transmitting portion.
It is arranged substantially in parallel with the transparent plate, a reflective sphere is attached to the mesh material, and a back cover plate is stacked on the back side of the transparent plate with the mesh material interposed therebetween, and at least the light transmitting portion of the back cover plate is provided. It is preferable that the portion corresponding to is transparent, and that the reflecting sphere is a glass bead having a refractive index of around 1.93.

[0009]

FIG. 1 shows a first embodiment of the present invention.
4 will be described.

In the drawing, reference numeral 10 denotes a reflecting mirror according to the present invention. This reflecting mirror 10 is formed by applying a reflecting film having a reflecting surface 12 on the back surface of a transparent plate 11 made of acryl. To reflect light from

A light transmitting portion 13 having no reflective film is formed at the central portion of the reflecting surface 12, and a net material 14 made of a wire mesh is superposed on the back surface of the light transmitting portion 13, and the transparent plate 11 is formed on the back surface. A back cover plate 15 made of a transparent material having the same shape as that described above is superimposed, and a light shielding film 16 is applied to the back surface except for a portion corresponding to the light transmitting portion 13.

As an example, the mesh material 14 is a wire material having a diameter of 0.3 mm and a mesh size, that is, an interval between the wires constituting the mesh is about 2 mm.

The mesh member 14 has a large number of fine beads 17 attached to the surface of a wire constituting the mesh member. The beads 17 are those which retroreflect 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 parallel thereto. As an example, a material made of a value titanate glass having a refractive index of 1.926 to 1.933, a specific gravity of 4.16, and a particle size of 40 μm to 65 μm is used.

In general, 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 light path from the sun through the transparent plate 11 to the reflection surface 12, and B-O2-C is reflected by the reflection surface 12 and reflected by the transparent plate 11.
It is a reflected light path that reaches the target object through the light source.

In this state, the incident light a that reaches the bead 17 through the light transmitting portion 13 having no reflective film is transmitted through the optical path A2-O3-
O4-D1 is reflected by E of the 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) which is reflected by the above-described reflecting surface 12 and reaches the object 6.

That is, since A1-O1 and A2-O3 are parallel, A1-O1 and O4-D1 are parallel, and since beads 17 have a retroreflective property, O4-D1 and D4-D1 are parallel.
O5-F, which is parallel to 2-O5 and which reflects,
Since A1-O1 is parallel to D2-O5, it is parallel to O2-C.

Accordingly, by looking at the object 6 with the eye 5 placed at the F position, the reflected light c and the object 6 can be seen overlapping. In other words, by illuminating the target 6 and the reflected light c through the light transmitting section 13, the irradiation light d is directed to the target 6.

Since the beads 17 on the rear surface of the transparent plate 11 are sparsely installed, the target object can be seen through the light transmitting portion 13. Is reflected in the light transmitting section 13.
It appears to form a circular area consisting of pale sun-like glows.

At the time of using the thus configured reflecting mirror, the object 6 is seen through the light transmitting portion 13 with the eyes 5 as shown in FIG. The incident light a transmitted through the transmission unit 13
Is reflected by the beads 17 and the angle of the reflecting mirror is adjusted so that the reflected light c reflected on the back surface of the transparent plate 11 overlaps with the target object 6. At this time, the eye 5 recognizes that the sun is shining in the light transmitting portion 13 with round and pale light. As a result, the irradiation light d is directed to the object.

In the above-described embodiment, the beads 17 are held by the net member 14, but in addition, as shown in FIGS. The light reflected on the back surface of the transparent plate 11 through the beads 17 is placed in a sparse state on the surface of the transparent plate 11 and is sandwiched between the back cover plates 15 so that the amount of light reflected by the back surface of the transparent plate 11 can be seen without excessive glare. What is necessary is to make it exist in the light transmission part in a state sparse.

The beads to be used are not limited to those described above, but may be any as long as they have retroreflective properties. Even if they have low retroreflective performance, they can aim at a target at a short distance. But can be used.

[0023]

As described above, in the sighted reflecting mirror according to the present invention, one of the reflecting surfaces in which the reflecting film is applied to the back surface of the flat transparent plate whose front and back surfaces are parallel to each other is directed toward the front surface side. In the portion, a light transmitting portion without a reflective film is provided, and on the back side of the transparent plate of the light transmitting portion, finely reflecting spheres for retroreflecting incident light are arranged in a sparse state, so that the light transmitting portion is By visually observing the target object, adjusting the angle of the reflector in this state, the sunlight passing through the reflecting sphere can be seen in the light transmission part, so that the light reflected by the reflector is accurately directed to the target object. In addition, even if the reflected light by the reflector is not visible, the target object can be easily and accurately irradiated.

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 sandwiching the back cover plate and allowing at least a portion corresponding to the light transmitting portion of the back cover plate to transmit light, it is possible to install a suitable amount of reflective spheres and an appropriate interval between the reflective spheres. It will be easier.

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

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is an optical path diagram showing a retroreflection state of a reflecting sphere used in the embodiment shown in FIG. 1;

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

FIG. 5 is a plan view showing another embodiment of the aiming reflector according to the present invention.

FIG. 6 is a longitudinal sectional view of the same.

FIG. 7 is a plan view showing a conventional aiming reflector.

FIG. 8 is a longitudinal sectional view of the same.

FIG. 9 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 5 eyes 6 target object 10 reflecting mirror 11 front transparent plate 12 reflecting surface 13 light transmitting portion 14 mesh material 15 back coating plate 16 light shielding film 17 beads

Claims (3)

[Claims] 1. A transparent plate having a front and back surface parallel to each other and flat,
A light-transmissive portion without a reflective film is provided on a part of the reflective surface where the reflective film is applied to the front surface side, and a fine-grained reflection for retroreflecting incident light on the transparent plate rear surface side of the light-transmissive portion is provided. An aiming reflector characterized by the spheres being sparsely arranged. 2. A reticulated material is disposed substantially in parallel with the transparent plate on the back surface of the transparent plate of the light transmitting portion, a reflecting sphere is attached to the reticulated material, and the reticulated material is disposed on the back side of the transparent plate. A sighted reflecting mirror in which at least a portion of the back cover plate corresponding to the light transmitting portion is capable of transmitting light. 3. The aiming reflector according to claim 1, wherein the reflecting sphere is a glass bead having a refractive index of about 1.93.