JP2011237606A - Window member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window member capable of observing an outside scene even when a building exists in front of a window.
A substrate-shaped window member (1) having a first surface (13b) disposed on the outdoor side and a second surface (13a) opposed to the first surface (13b) in the front-rear direction and disposed on the indoor side, After having the incident surface 11 formed in a part and the output surface 12 formed in the position which becomes a setting direction from the incident surface 11, after allowing external light to enter into the board of the window member 1 from the 1st surface 13b The external light is reflected by the incident surface 11 in the setting direction, and the external light is further guided by the first surface 13b and the second surface 13a to the output surface 12 while reflecting the external light in the setting direction, and the external light is emitted. It is characterized by being guided into the room from the surface 12.
[Selection] Figure 1

Description

  The present invention relates to a window member.

FIG. 5 is an optical path diagram showing a schematic configuration of a plane of a conventional window. The Z direction is in front of the observer, the Y direction is above the observer, and the X direction (setting direction) is to the left of the observer.
The window 30 is a polycarbonate (refractive index ng), the distance in the X direction has a flat plate shape that is W _2, a first surface 30b disposed on the exterior side, opposite the first surface 30b and the -Z direction And it has the 2nd surface 30a arrange | positioned indoors (for example, refer patent document 1).
Thereby, after the external light L enters the inside of the plate of the window 30 from the first surface 30b, it propagates inside the substrate and further passes through the second surface 30a to reach the room. Thus, the observer P ₁ in the room will be observed external light L 'which has arrived.

JP-A-11-166301

However, the window 30 as described above, when there is a building B to the front left half of the window 30 is in the chamber of the right half W ₁ external light L is guided, external light in the left half of chamber L was not led. That is, the observer P ₁ located in the right half of the room can observe the outside scene (star), but the observers P ₂ and P ₃ located in the left half of the room are the buildings B and There was no choice but to observe the wall 31.

Therefore, in order to solve the above problems, the present inventors have examined a window member that can observe an external scene (star) even when the building B exists in front of the window 30. Therefore, so as to form an incident plane on the right side W ₁ of the window member, to produce a window member which forms the emission surface on the left side of the incident surface. As a result, after the external light is incident from the first surface into the plate of the window member, the external light is reflected leftward (X direction) by the incident surface, and the external light is further reflected between the first surface and the second surface. And led to the exit surface while reflecting leftward, and found that external light is guided from the exit surface to the room.

  That is, the window member of the present invention is a plate-shaped window member having a first surface disposed on the outdoor side and a second surface disposed on the indoor side facing the first surface in the front-rear direction. An incident surface formed on a part of the window member with respect to the total distance of the window member in a setting direction perpendicular to the front-rear direction, and an emission surface formed at a position that is in the setting direction from the incident surface. After the external light is incident on the inside of the plate of the window member from the first surface, the external light is reflected in the setting direction on the incident surface, and the external light is set on the first surface and the second surface. The light is guided to the exit surface while being reflected in the direction, and the ambient light is guided from the exit surface to the room.

Here, the “setting direction” is an arbitrary direction predetermined by a designer or the like. For example, the left direction, the right direction, the upper direction, the lower direction, or the left direction and the right direction. Or two directions, such as upward and downward.
According to the window member of the present invention, the entrance surface of the window member is disposed at a position where no building or the like exists in front of the window and an outside scene exists. Thereby, the window member of this invention makes external light inject into the board inside of a window member from a 1st surface. Then, external light is reflected in the setting direction on the incident surface. Thereby, the first surface and the second surface guide the ambient light to the emission surface while alternately reflecting the external light a plurality of times. Therefore, the emission surface guides outside light toward the room.

As described above, according to the window member of the present invention, it is possible to observe an outside scene even when a building exists in front of the window.
In addition, even if a passer-by tries to observe the indoor state through the window member from the outside, since the indoor state is displayed multiple times by the outdoor passer-by, etc., the passer-by can see the indoor state. Can be prevented. That is, since it has a blind effect, a curtain, a blind, etc. become unnecessary.

(Means and effects for solving other problems)
Further, in the window member of the present invention, the emission surface reflects a set ratio of the light flux of the external light and transmits a set ratio of the light flux of the external light, and has a plurality of planar beam splitter surfaces. The beam splitter surfaces are parallel to each other and are inclined at a set angle with respect to the first surface and the second surface.
Here, the “set ratio” is an arbitrary ratio determined in advance by a designer or the like. For example, the “set ratio” is determined so as to reflect 19% of the light flux of the external light and transmit 81% of the external light. .
The “set angle” is an arbitrary angle determined in advance by a designer or the like, for example, 24 °.
According to the window member of the present invention, as the number of beam splitter surfaces is increased, the range of positions where the external scene can be observed can be expanded.
Furthermore, in the window member of the present invention, the exit surface is a diffractive surface that reflects the set ratio of the light flux of the external light and diffracts the set ratio of the light flux of the external light.
According to the window member of the present invention, the longer the distance at which the diffractive surface is formed in the setting direction, the longer the range of positions where the outside scene can be observed.

It is an optical path figure which shows schematic structure of the plane of the window member which is one Embodiment of this invention. It is a figure which shows schematic structure of the plane of the window member which is one Embodiment of this invention. It is a figure which shows schematic structure of the plane of the window member which is one Embodiment of this invention. It is a figure which shows schematic structure of the plane of the window member which is one Embodiment of this invention. It is an optical path figure which shows schematic structure of the plane of the conventional window.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments described below, and it goes without saying that various aspects are included without departing from the spirit of the present invention.

<First embodiment>
FIG. 1 is an optical path diagram showing a schematic plan configuration of a window member according to an embodiment of the present invention. The Z direction is in front of the observer, the Y direction is above the observer, and the X direction (setting direction) is to the left of the observer. Moreover, the same code | symbol is attached | subjected about the thing similar to the window 30 mentioned above.
Window member 1 is polycarbonate (refractive index ng), becomes a flat plate distance in the X direction is W _3, and the incident surface 11 of the planar shape formed in the right portion (a portion), formed in the left portion The outgoing surface 12, the planar third surface 14a, the planar fourth surface 14b facing the third surface 14a in the X direction, and the third surface 14a and the fourth surface 14b by the interface with air. And a side group 13 formed therebetween.

The side group 13 has a quadrangular shape when viewed from the X direction, a planar first surface 13b, a planar second surface 13a facing the first surface 13b in the -Z direction, and a planar fifth surface ( And a sixth sixth surface (not shown) having a planar shape facing the fifth surface in the Y direction.
The angle of the incident surface 11 with respect to the X direction is arranged to be α (for example, 24 °) when viewed from the Y direction. The incident surface 11 can reflect 81% of the light flux of the external light L and transmit 19% of the light flux of the external light L.

  The exit surface 12 is composed of five beam splitter surfaces, and includes a planar first beam splitter surface 12a, a planar second beam splitter surface 12b, a planar third beam splitter surface 12c, and a planar shape. It has a fourth beam splitter surface 12d and a planar fifth beam splitter surface 12e. The first beam splitter surface 12a, the second beam splitter surface 12b, the third beam splitter surface 12c, the fourth beam splitter surface 12d, and the fifth beam splitter surface 12e are sequentially formed in the X direction. Has been placed. Furthermore, the angle of the first beam splitter surface 12a with respect to the X direction, the angle of the second beam splitter surface 12b with respect to the X direction, the angle of the third beam splitter surface 12c with respect to the X direction, and the fourth beam splitter surface 12d with respect to the X direction. And the angle of the fifth beam splitter surface 12e with respect to the X direction are arranged to be the same α (set angle) when viewed from the Y direction.

At this time, one end of the first beam splitter surface 12a, one end of the second beam splitter surface 12b,..., One end of the fifth beam splitter surface 12e are in contact with the second surface 13a and the first The other end of the beam splitter surface 12a, the other end of the second beam splitter surface 12b,..., The other end of the fifth beam splitter surface 12e are in contact with the first surface 13b.
The first beam splitter surface 12a, the second beam splitter surface 12b, the third beam splitter surface 12c, the fourth beam splitter surface 12d, and the fifth beam splitter surface 12e reflect 19% of the light flux of the external light L. At the same time, 81% of the luminous flux of the external light L can be transmitted.

In such a window member 1, the first surface 13b is disposed on the outdoor side, and the second surface 13a is disposed on the indoor side. At this time, it arrange | positions so that the building B may not exist ahead of the entrance plane 11. FIG.
As a result, in such a window member 1, first, external light L enters the plate of the window member 1 from the first surface 13 b. Then, the external light L is guided to the incident surface 11. Therefore, the incident surface 11 reflects 81% of the light flux of the external light L and transmits 19% of the light flux of the external light L. That is, the light flux of the external light L ′ that is 19.0% of the light flux of the external light L is guided toward the observer P ₁ .
On the other hand, 81% of the external light L is reflected by the incident surface 11 in the substantially X direction (setting direction). The ambient light L is guided to the first beam splitter surface 12a while being alternately reflected a plurality of times by the first surface 13b and the second surface 13a. Therefore, the first beam splitter surface 12a reflects 19% of the light flux of the external light L and transmits 81% of the light flux of the external light L. That is, the light flux of the external light La, which is 15.4% of the light flux of the external light L, is guided toward the room.

Further, the external light L transmitted through the first beam splitter surface 12a reaches the second beam splitter surface 12b. Therefore, the second beam splitter surface 12b reflects 19% of the light flux of the external light L and transmits 81% of the light flux of the external light L. That leads toward the light flux of the external light Lb which is 12.5% of the luminous flux of the external light L to the observer P _2.
Further, the external light L transmitted through the second beam splitter surface 12b reaches the third beam splitter surface 12c, the fourth beam splitter surface 12d, and the fifth beam splitter surface 12e, and the beam splitter surfaces 12c to 12e are In addition, 19% of the light flux of the external light L is reflected and 81% of the light flux of the external light L is transmitted.

Moreover, in such a window member 1, the indoor light which entered into the plate | board of the window member 1 from the 2nd surface 13a is the 1st beam splitter surface 12a, the 2nd beam splitter surface 12b, ... 5th beam splitter surface. 12e. Therefore, the first beam splitter surface 12a, the second beam splitter surface 12b,..., The fifth beam splitter surface 12e reflect 19% of the light beam of room light and transmit 81% of the light beam of room light. That is, the first beam splitter surface 12a, the second beam splitter surface 12b,..., The fifth beam splitter surface 12e reflect a part of the light beam of the room light toward the incident surface 11.
The incident surface 11 reflects 81% of the luminous flux of room light and transmits 19% of the luminous flux of room light. In other words, the incident surface 11 guides the light flux of room light toward a passerby (star mark position) or the like. Therefore, even if the passerby tries to observe the indoor state through the window member 1 from the outside, the passerby or the like may see the indoor state of the first beam splitter surface 12a, the second beam splitter surface 12b,... It is visually recognized so that those reflected by the beam splitter surface 12e overlap.

As described above, according to the window member 1, even when the building B exists in the front right half of the window 30, it is possible to observe an external scene (star) anywhere in the room.
In addition, even if a passerby tries to observe the indoor state through the window member 1 from the outside, the outdoor passerby may display the indoor state multiple times, so that the passerby visually recognizes the indoor state. Can be prevented.

<Second Embodiment>
In the window member 1 described above, the configuration using the window member 1 is shown. However, the window member 50 described below may be used instead of the window member 1. FIG. 2 is a diagram showing a schematic configuration of a plane of the window member 50 used in place of the window member 1.
The window member 50 has a flat plate shape made of polycarbonate (refractive index ng), a planar incident surface 51 formed on the right side portion, an exit surface 52 formed on the left side portion, and a planar third surface 54a. And a fourth surface 54b having a planar shape facing the third surface 54a in the X direction, and a side group 53 formed between the third surface 54a and the fourth surface 54b by an interface with air.

The side group 53 has a quadrangular shape when viewed from the X direction, a planar first surface 53b, a planar second surface 53a facing the first surface 53b in the -Z direction, and a planar fifth surface ( And a sixth sixth surface (not shown) having a planar shape facing the fifth surface in the Y direction.
The incident surface 51 is a planar diffractive surface, and is formed on the second surface 53a. The incident surface 51 can diffract the entire light flux of the external light L substantially in the X direction (setting direction).

  The exit surface 52 is a planar diffractive surface and is formed on the first surface 53b with a predetermined area (the length in the X direction is a length necessary for reflecting the external light L i times). Has been. The exit surface 52 can reflect 81% of the external light L and diffract 19% of the external light L to the observer.

<Third embodiment>
In the window member 1 described above, the configuration using the window member 1 is shown. However, the window member 60 described below may be used instead of the window member 1. FIG. 3 is a diagram showing a schematic configuration of a plane of the window member 60 used in place of the window member 1.
The window member 60 has a flat plate shape made of polycarbonate (refractive index ng), a planar incident surface 61 formed on the right side portion, an exit surface 62 formed on the left side portion, and a planar third surface 64a. And a fourth surface 64b having a planar shape facing the third surface 64a in the X direction, and a side group 63 formed between the third surface 64a and the fourth surface 64b by an interface with air.

The side group 63 has a quadrangular shape when viewed from the X direction, a planar first surface 63b, a planar second surface 63a facing the first surface 63b in the -Z direction, and a planar fifth surface ( And a sixth sixth surface (not shown) having a planar shape facing the fifth surface in the Y direction.
The angle of the incident surface 61 with respect to the X direction is arranged to be α (for example, 24 °) when viewed from the Y direction. The incident surface 61 can reflect 100% of the light flux of the external light L.

  The exit surface 62 includes i beam splitter surfaces, and includes a planar first beam splitter surface 62a, a planar second beam splitter surface 62b,..., A planar i-th beam splitter surface 62i. Have The first beam splitter surface 62a, the second beam splitter surface 62b,..., And the i-th beam splitter surface 62i are arranged in order in the X direction. Further, the angle of the first beam splitter surface 62a with respect to the X direction, the angle of the second beam splitter surface 62b with respect to the X direction, and the angle of the i-th beam splitter surface 62i with respect to the X direction are viewed from the Y direction. It arrange | positions so that it may become the same (alpha).

At this time, one end of the first beam splitter surface 62a, one end of the second beam splitter surface 62b,..., One end of the i-th beam splitter surface 62i are not in contact with the second surface 63a. The other end of the one beam splitter surface 62a, the other end of the second beam splitter surface 62b,..., The other end of the i-th beam splitter surface 62i do not contact the first surface 63b.
The first beam splitter surface 62a, the second beam splitter surface 62b,..., The i-th beam splitter surface 62i can reflect 100% of the light flux of the external light L.

<Fourth embodiment>
In the window member 1 described above, the configuration using the window member 1 is shown. However, the window member 70 described below may be used instead of the window member 1. FIG. 4 is a diagram showing a schematic configuration of a plane of the window member 70 used in place of the window member 1.
The window member 70 has a flat plate shape made of polycarbonate (refractive index ng), a planar first incident surface 71 formed in the central left portion (part), a first emission surface 72 formed in the left portion, A planar second incident surface 81 formed in the central right part (part), a second emission surface 82 formed in the right part, a planar third surface 74a, and a third surface 74a in the X direction. It has the 4th surface 74b of the planar shape which opposes, and the side surface group 73 formed between the 3rd surface 74a and the 4th surface 74b by the interface with air.

  The side group 73 has a quadrangular shape when viewed from the X direction, a planar first surface 73b, a planar second surface 73a facing the first surface 73b in the -Z direction, and a planar fifth surface ( And a sixth sixth surface (not shown) having a planar shape facing the fifth surface in the Y direction.

The angle of the first incident surface 71 with respect to the X direction is arranged to be α (for example, 24 °) when viewed from the Y direction. The first incident surface 71 is capable of reflecting 81% of the light flux of the external light L and transmitting 19% of the light flux of the external light L.
The first emission surface 72 includes three beam splitter surfaces, and includes a planar first beam splitter surface 72a, a planar second beam splitter surface 72b, and a planar third beam splitter surface 72c. . The first beam splitter surface 72a, the second beam splitter surface 72b, and the third beam splitter surface 72c are arranged in order in the X direction. Furthermore, the angle of the first beam splitter surface 72a with respect to the X direction, the angle of the second beam splitter surface 72b with respect to the X direction, and the angle of the third beam splitter surface 72c with respect to the X direction are the same α when viewed from the Y direction. It is arranged to be.

At this time, one end of the first beam splitter surface 72a, one end of the second beam splitter surface 72b, and one end of the third beam splitter surface 72c are in contact with the second surface 73a, and the first beam splitter surface 72a. The other end of the second beam splitter surface 72b and the other end of the third beam splitter surface 72c are in contact with the first surface 73b.
The first beam splitter surface 72a, the second beam splitter surface 72b, and the third beam splitter surface 72c reflect 19% of the light flux of the external light L and transmit 81% of the light flux of the external light L. Is possible.

The angle of the second incident surface 81 with respect to the X direction is arranged to be β (for example, −24 °) when viewed from the Y direction. The second incident surface 81 can reflect 81% of the light flux of the external light L and transmit 19% of the light flux of the external light L.
The second exit surface 82 is composed of one beam splitter surface 82. Further, the angle of the beam splitter surface 82 with respect to the −X direction is arranged to be β when viewed from the Y direction.

At this time, one end of the beam splitter surface 82 contacts the second surface 73a, and the other end of the beam splitter surface 82 contacts the first surface 73b.
The beam splitter surface 82 can reflect 19% of the light flux of the external light L and transmit 81% of the light flux of the external light L.

<Other embodiments>
In the window member 1 described above, the configuration in which the X direction and the setting direction coincide with each other is shown. However, the X direction and the setting direction may not coincide with each other, and the setting direction may be any one direction. Can do.
Examples of the material for forming the window member include polycarbonate, polymethacrylic acid (PMMA), cycloolefin, and glass material.

  In the window member 1 described above, each of the beam splitter surfaces 12a to 12e is configured to reflect 19% of the light flux of the external light L and to transmit 81% of the light flux of the external light L. However, each beam splitter surface may be configured to be a beam splitter surface that reflects a different ratio and transmits a different ratio.

  The present invention can be used for window members and the like.

DESCRIPTION OF SYMBOLS 1 Window member 11 Incident surface 12 Outgoing surface 13a Second surface 13b First surface L External light

Claims (3)

A plate-shaped window member having a first surface disposed on the outdoor side, and a second surface disposed on the indoor side facing the first surface in the front-rear direction,
An incident surface formed on a part of the window member with respect to the entire distance of the window member in a setting direction perpendicular to the front-rear direction;
And an exit surface formed at a position that is a setting direction from the entrance surface,
After external light is incident on the inside of the plate of the window member from the first surface, the external light is reflected in the setting direction on the incident surface, and the external light is further set on the first surface and the second surface in the setting direction. A window member, wherein the window member is guided to the exit surface while being reflected to guide the outside light to the room from the exit surface. The exit surface is a plurality of planar beam splitter surfaces capable of reflecting a set ratio of the light flux of the external light and transmitting the set ratio of the light flux of the external light,
The window member according to claim 1, wherein the beam splitter surfaces are parallel to each other and are inclined at a set angle with respect to the first surface and the second surface.   2. The window member according to claim 1, wherein the exit surface is a diffractive surface that reflects a set ratio of the light flux of the external light and diffracts the set ratio of the light flux of the external light.

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