JP2016197159A - Optical controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical controller capable of making an adjustment of incident light easier as well as improving a degree of freedom of an arrangement form.SOLUTION: The optical controller 1 includes: a first dimming control panel 10 including a first polarization layer 12 and a first retardation layer 13 having a first area 13a and a second area 13b of different slow axis directions arranged alternately in a first arrangement direction; and a second dimming control panel 20 including a second polarization layer 22 and a second retardation layer 23 having a third area 23a and a fourth area 23b of different slow axis directions arranged alternately in the first arrangement direction, the second dimming control panel arranged opposing the first dimming control panel 10. The optical controller further includes a panel movement part 10a disposed at least in the first dimming control panel 10 and configured to move the second dimming control panel 20 in the first arrangement direction with regard to the first dimming control panel 10. The panel movement part 10a is composed of a notch part or a pore part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a light control device that adjusts incident light by relatively moving two dimming control panels.

  2. Description of the Related Art Conventionally, various light control devices that control transmitted light and perform dimming by relatively moving dimming control panels held so as to face each other have been proposed (for example, Patent Document 1). In such a light control device, a dimming control panel in which a retardation layer patterned in two regions having different phase differences is laminated with a polarizing layer is used, and two dimming control panels can be moved. Are placed on top of each other. Thus, in the light control device, the incident light is adjusted by changing the form in which the regions provided in each light control panel overlap between the two light control panels.

JP2013-15569A

Such a light control device adjusts incident light by manually pushing the end of one panel in order to move the two light control panels relatively. It may not be possible to accurately align the area with the area of the other dimming control panel, and it may take time to adjust the incident light, or the adjustment of the incident light itself may be insufficient. there were.
Therefore, in order to avoid such a problem, it is conceivable to provide a protrusion such as a handle on the surface of the dimming control panel, and manually move the panel through the handle. In some cases, the handle portion protrudes from the outer shape, and the degree of freedom of the arrangement form is reduced, for example, the arrangement location of the light control device is restricted.

  The subject of this invention is providing the light control apparatus which can improve the freedom degree of arrangement | positioning form while making adjustment of incident light easy.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.
1st invention WHEREIN: The 1st polarizing layer (12) and the 1st phase difference layer by which the 1st area | region (13a) and 2nd area | region (13b) from which a slow axis direction differs were alternately arranged in the 1st arrangement direction The first dimming control panel (10) having (13), the second polarizing layer (22), and the third region (23a) and the fourth region (23b) having different slow axis directions alternately And a second light control panel (20) arranged at a position facing the first light control panel, the second phase difference layer (23) arranged in one arrangement direction, Of the first dimming control panel and the second dimming control panel, provided in at least the first dimming control panel, the second dimming control panel with respect to the first dimming control panel in the first arrangement direction A panel moving part (10a) to be moved is formed, and the panel moving part is a notch part. Be formed by holes, a light control device according to claim (1).
According to a second aspect of the present invention, in the light control device (1) according to the first aspect, the panel moving portion is a cut provided at least at one end edge in the first arrangement direction of the first dimming control panel (10). 0.75 when the depth of the cutout portion in the first arrangement direction is h and the width of the first region (13a) in the first arrangement direction is w. It is a light control device characterized by satisfying xw ≦ h ≦ 1.25 × w.
According to a third invention, in the light control device (1) of the second invention, the notch portion (10a) is smaller than the depth dimension of the notch portion from the bottom surface in the first arrangement direction. The light control device is characterized in that a protruding step (10b) is provided.
According to a fourth aspect of the present invention, in the light control device (1) according to the second aspect, the cutout portion (10a) has a curved surface (10c) or an inclined surface connecting the bottom surface and the end surface of the first dimming control panel. The light control device is characterized in that is formed.
According to a fifth aspect of the present invention, in the light control device (101) according to the first aspect, the panel moving unit includes a first through hole (110a) provided in the first dimming control panel (110), and the first It is comprised from the 2nd through-hole (120a) or hollow provided in the 2 light control panel (120), and the said 1st through-hole is provided in the position corresponding to the said 2nd through-hole or the said hollow. When the width dimension of the first through holes in the first arrangement direction is D, the width of the second through holes or the recesses is d, and the width of the first region is w. It is a light control device characterized by satisfying 75 × (d + w) ≦ D ≦ 1.25 (d + w).

  ADVANTAGE OF THE INVENTION According to this invention, while adjusting incident light, the freedom degree of an arrangement | positioning form can be improved.

It is a figure explaining the light control apparatus of 1st Embodiment. It is a figure explaining the detail of the 1st light control panel of 1st Embodiment. It is a figure explaining the detail of the 2nd light control panel of 1st Embodiment. It is a figure explaining the movement state of a 2nd light control panel. It is a figure explaining other forms of layer composition of the 1st light control panel and the 2nd light control panel. It is a figure explaining the other form of the notch part provided in a 1st light control panel and a back panel. It is a figure explaining the light control apparatus of 2nd Embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, each figure shown below including FIG. 1 is the figure shown typically, and the magnitude | size and shape of each part are exaggerated suitably for easy understanding.
Numerical values such as dimensions and material names of the respective members described in the present specification are examples of the embodiment, and the present invention is not limited thereto, and may be appropriately selected and used.
In this specification, terms that specify shape and geometric conditions, for example, terms such as parallel and orthogonal, are strictly meanings, have similar optical functions, and can be regarded as parallel and orthogonal It also includes a state having an error of.

(First embodiment)
FIG. 1 is a diagram for explaining the light control apparatus according to the present embodiment. FIG. 1A is an exploded perspective view of the light control device. FIG.1 (b) is the front view seen from the thickness direction of the light control apparatus. FIG. 1C shows a cross-sectional view of part c in FIG. 1B, and FIG. 1D shows a cross-sectional view of part d in FIG.
FIG. 2 is a diagram illustrating details of the first dimming control panel of the present embodiment. 2A is a view of the first dimming control panel as viewed from the vertical upper side, and FIG. 2B is a view of the first dimming control panel as viewed from the back side (of FIG. 2A). b section arrow view).
FIG. 3 is a diagram illustrating details of the second dimming control panel of the present embodiment. 3A is a view of the second dimming control panel as viewed from the vertical upper side, and FIG. 3B is a view of the second dimming control panel as viewed from the back side (of FIG. 3A). b section arrow view).

  In the following drawings including FIGS. 1 to 3 and in the following description, in order to facilitate understanding, the vertical direction in the normal use state of the light control device is defined as the Y direction, and the light control in the horizontal direction is performed. The thickness direction of the apparatus is the Z direction, and the left-right direction orthogonal to the thickness direction is the X direction. Of the left-right direction (X direction), the left side is the -X side and the right side is the + X side. In the vertical direction (Y direction), the upper vertical side is the + Y side, the lower vertical side is the -Y side, and, in the thickness direction (Z direction), the front side is the -Z side and the back side is + Z. On the side.

  The light control device 1 is a device that controls light incident from the front surface side (−Z side) or the back surface side (+ Z side). As illustrated in FIG. 1, the light control device 1 includes a first dimming control panel 10, a second dimming control panel 20, and a back panel 30, which are arranged in order from the front surface side (−Z side). The upper edge and the lower edge of the dimming control panel 10 and the back panel 30 are respectively coupled by the spacer 40, and the second dimming control panel 20 is located on the spacer 40 between the first dimming control panel 10 and the back panel 30. Are movably held in the left-right direction (X direction).

The first dimming control panel 10 is a plate-like member formed in a rectangular shape having optical transparency, and has an arc-shaped cutout portion 10a (panel moving portion) at both edges in the left-right direction (X direction). Is formed.
As shown in FIG. 2A, the first dimming control panel 10 has a first polarizing layer 12 and a first retardation layer 13 laminated in this order on the back side (+ Z side) of the first base material 11. .
The second dimming control panel 20 is a plate-like member formed in a rectangular shape having light transmittance. As shown in FIG. 3A, the second dimming control panel 20 has a second polarizing layer 22 and a second retardation layer 23 sequentially laminated on the surface side (−Z side) of the second base material 21. Yes.

  The second dimming control panel 20 is formed so that each dimension in the left-right direction (X direction) and the vertical direction (Y direction) is smaller than that of the first dimming control panel 10. Specifically, the dimension of the second dimming control panel 20 in the left-right direction is the notch 10 a provided in the first dimming control panel 10 with respect to the horizontal dimension of the first dimming control panel 10. Are formed in a dimension smaller by a depth (maximum cut amount) h in the left-right direction (X direction). The vertical dimension of the second dimming control panel 20 is slightly smaller than the vertical dimension of the first dimming control panel 10 minus the vertical thickness of the two spacers 40. .

  As shown in FIG. 1, the back panel 30 is a plate-like member formed in a rectangular shape having light transmittance, and is disposed on the back side of the second dimming control panel 20. The rear panel 30 has an outer shape viewed from the thickness direction (Z direction) equivalent to the first dimming control panel 10 described above. Like the first dimming control panel 10, the back panel 30 is formed with arc-shaped cutout portions 30a at both end edges in the left-right direction (X direction). The back panel 30 is formed to a thickness of about 2 to 4 mm, for example.

Next, details of the first dimming control panel 10 and the second dimming control panel 20 will be described.
The 1st base material 11 provided in the 1st light control panel 10 is a base material which supports the 1st polarizing layer 12 and the 1st phase difference layer 13, as shown in FIG. The first polarizing layer 12 is bonded to the back-side surface (+ Z-side surface) of the first base material 11 via a bonding layer (not shown), and the back-side surface of the first polarizing layer 12 is The first retardation layer 13 is bonded via a bonding layer (not shown).
The 2nd base material 21 provided in the 2nd light control panel 20 is a base material which supports the 2nd polarizing layer 22 and the 2nd phase contrast layer 23, as shown in FIG. The second polarizing layer 22 is bonded to the surface on the surface side of the second base material 21 (the surface on the −Z side) through a bonding layer (not shown), and the surface on the surface side of the second polarizing layer 22 is The second retardation layer 23 is bonded via a bonding layer (not shown).

The above-mentioned bonding layer is not particularly limited as long as sufficient bonding strength can be obtained, and an adhesive layer using an adhesive or an adhesive layer using an adhesive is used as the bonding layer. Can do. Further, the bonding layer may be provided with various functions such as an infrared shielding function and an antistatic function.
For the first base material 11 and the second base material 21, for example, light-transmitting glass, transparent resin such as polycarbonate or acrylic, or the like can be used. As an example, the 1st substrate 11 and the 2nd substrate 21 are formed in thickness of about 2-4 mm, for example.

  The first polarizing layer 12 and the second polarizing layer 22 provided in the first dimming control panel 10 and the second dimming control panel 20 respectively transmit light of one linearly polarized light component with high transmittance, It has a function of absorbing the light of the other linearly polarized light component that vibrates in the direction orthogonal to the linearly polarized light component. In the present embodiment, the first polarizing layer 12 and the second polarizing layer 22 are arranged so that their absorption axes are parallel to each other, that is, in a parallel Nicol positional relationship. As the first polarizing layer 12 and the second polarizing layer 22, for example, a widely used polarizing plate formed by adsorbing iodine or a dichroic dye to polyvinyl alcohol can be used. The first polarizing layer 12 and the second polarizing layer 22 are formed to a thickness of about 200 μm, for example.

The first retardation layer 13 and the second retardation layer 23 provided in the first dimming control panel 10 and the second dimming control panel 20 are layers that control the polarization state of the transmitted light.
As shown in FIG. 2, the first retardation layer 13 includes a first region 13a and a second region 13b that have different effects on the polarization state of transmitted light. The first region 13a and the second region 13b are formed in a strip shape extending in the vertical direction (Y direction), and are provided in stripes alternately arranged in the left-right direction (X direction, first arrangement direction). It has been. The second region 13b of the present embodiment is formed to have a width substantially equal to the width w of the first region 13a in the first arrangement direction.

  The first retardation layer 13 of the present embodiment causes different phase modulations in the transmitted light depending on the first region 13a and the second region 13b. As a result, the polarization state of the light transmitted from the first polarizing layer 12 through the first region 13a is different from the polarization state of the light transmitted from the first polarizing layer 12 through the second region 13b. Specifically, the first region 13a and the second region 13b each have a retardation of λ / 4, but their slow axes are orthogonal to each other. Therefore, the first dimming control panel 10 generates λ / 4 phase modulation for the light transmitted through the first region 13a, and −λ / 4 phase modulation for the light transmitted through the second region 13b. Can be generated.

  Therefore, the light incident from the front surface side (−Z side) of the first dimming control panel 10 is transmitted through the first polarizing layer 12 only by the first linearly polarized light component, for example, the P wave, The light enters the first retardation layer 13 as one polarization state. Of the light incident on the first retardation layer 13, the light incident on the first region 13a is converted from the first polarization state to the first circularly polarized light, for example, right circularly polarized light. Of the light incident on the first retardation layer 13, the light incident on the second region 13b is converted from the first polarization state to the second circularly polarized light, for example, left circularly polarized light. In this way, the first dimming control panel 10 can emit light incident from the front side from the back side as light having different polarization components depending on the first region 13a and the second region 13b.

As shown in FIG. 3, the second retardation layer 23 includes a third region 23a and a fourth region 23b that have different effects on the polarization state of transmitted light. The third region 23a and the fourth region 23b are formed in a strip shape extending in the vertical direction (Y direction), and are provided in stripes alternately arranged in the first arrangement direction. The third region 23a and the fourth region 23b of the present embodiment are formed to have substantially the same width as the width w of the first region 13a in the first arrangement direction.
Here, the widths are substantially equal not only when the width w of the second region 13b, the third region 23a, and the fourth region 23b with respect to the first region 13a in the first arrangement direction completely match each other, This includes the case where the error is formed in the range of -10% to + 10% with respect to the width w with respect to the first region 13a. Therefore, the width of the second region 13b, the width of the third region 23a, and the width of the fourth region 23b with respect to the first region 13a are 0.9 when the width of the first region in the first arrangement direction is w. It is formed in the range of not less than xw and not more than 1.1 × w.

The second retardation layer 23 of the present embodiment causes different phase modulation in the transmitted light depending on the third region 23a and the fourth region 23b. Accordingly, the polarization state of the light transmitted from the second polarizing layer 22 through the third region 23a is different from the polarization state of the light transmitted from the second polarizing layer 22 through the fourth region 23b. Specifically, the third region 23a and the fourth region 23b each have a retardation of λ / 4, but their slow axes are orthogonal to each other. Therefore, the second dimming control panel 20 generates λ / 4 phase modulation for the light transmitted through the third region 23a, and −λ / 4 phase modulation for the light transmitted through the fourth region 23b. Can be generated.
The first phase difference layer 13 and the second phase difference layer 23 are known manufacturing methods disclosed in, for example, International Publication No. 2013-054673, Japanese Patent Application Laid-Open No. 2012-137725, Japanese Patent Application Laid-Open No. 2012-198522, and the like. It can be produced using a method or the like. The first retardation layer 13 and the second retardation layer 23 are formed to a thickness of about 60 μm, for example.

FIG. 4 is a diagram for explaining the movement state of the second dimming control panel, and corresponds to FIG.
As described above, the first dimming control panel 10 and the back panel 30 are provided with the notch 10a and the notch 30a, respectively.
By pushing the end face of the second dimming control panel 20 in the left-right direction (X direction) through the notches 10a and 30a, the first dimming control panel 10 is moved by a predetermined amount. Can be moved relative to each other.

Specifically, as shown in FIG. 4A, the right-side (+ X side) end surfaces of the first dimming control panel 10, the rear panel 30, and the second dimming control panel 20 are in the same plane. By pushing the right end surface of the second dimming control panel 20 to the left side through the notches 10a and 30a on the right side of the first dimming control panel 10 and the back panel 30, the second dimming control panel 20 is 4B, as shown in FIG. 4B, the left (−X side) end surfaces of the first dimming control panel 10, the back panel 30, and the second dimming control panel 20 are in the same plane. Become.
Here, the relationship between the depth h in the left-right direction (X direction, first arrangement direction) of the notches 10a and 30a and the width w of the first region in the first arrangement direction is 0.75 × w. It is desirable to satisfy ≦ h ≦ 1.25 × w, and it is more desirable to satisfy 0.9 × w ≦ h ≦ 1.1 × w.

  By defining the depth h of the notches 10a, 30a within the above-mentioned numerical range, the movement amount of the second dimming control panel 20 pushed in the left-right direction via the notches 10a, 30a can be determined for each phase difference. The third region 23a and the fourth region 23b of the second retardation layer 23 can be made substantially equal to the width w of each region provided in the layer, respectively. The two regions 13b can be arranged to face each other.

  For example, as shown in FIG. 4A, when the right (+ X side) end faces of the first dimming control panel 10 and the second dimming control panel 20 are in the same plane, the first dimming control panel 10 The first region 13a and the third region 23a of the second dimming control panel 20 face each other, and similarly, the second region 13b and the fourth region 23b face each other. Here, when the second dimming control panel 20 is pushed to the left side (−X side) through the notches 10a and 30a, the second dimming control panel 20 is moved to the left by the depth h of the notch. By moving, the left end face of the second dimming control panel 20 is in the same plane as the left end face of the first dimming control panel 10. At this time, as shown in FIG. 4B, the first area 13a of the first dimming control panel 10 faces the fourth area 23b of the second dimming control panel 20, and similarly, the second area 13b. Is in a state of facing the third region 23a.

Next, the operation of the light control device 1 will be described.
In the following description, an example in which light is incident from the front surface side (−Z side) of the light control device 1 will be described, but the same applies to the case where light is incident from the back surface side (+ Z side).
First, as shown in FIG. 4A, the third region 23a (fourth region 23b) of the second dimming control panel 20 is replaced with the first region 13a (second region 13b) of the first dimming control panel 10. , The light incident from the surface side surface of the first dimming control panel 10 passes through the first base material 11 and enters the first polarizing layer 12. Then, only the light of the first linearly polarized light component corresponding to the transmission axis of the first polarizing layer 12, for example, only the P wave, is transmitted through the first polarizing layer 12.

Then, the light transmitted through the first polarizing layer 12 enters the first retardation layer 13. Of the light incident on the first phase difference layer 13, the light incident on the first region 13 a undergoes λ / 4 phase modulation and becomes light of the first circular polarization component, for example, light of the right circular polarization component, The light is emitted from the first retardation layer 13.
Here, since the first region 13a of the first dimming control panel 10 faces the third region 23a of the second dimming control panel 20, the light is emitted from the first region 13a of the first retardation layer 13. The light enters the third region 23 a of the second dimming control panel 20. Then, the light incident on the third region 23a undergoes -λ / 4 phase modulation. That is, in the third region 23a, phase modulation that cancels phase modulation in the first retardation layer 13 in the first region 13a occurs. Therefore, the light transmitted through the second retardation layer 23 is in the same polarization state as before entering the first retardation layer 13, that is, the polarization state immediately after transmitting through the first polarization layer 12. The second polarizing layer 22 of the second dimming control panel 20 has a parallel Nicol positional relationship with the first polarizing layer 12 of the first dimming control panel 10. Accordingly, the light transmitted through the first region 13a of the first dimming control panel 10 passes through the third region 23a of the second dimming control panel 20 as it is.

On the other hand, the light incident on the second region 13b out of the light incident on the first retardation layer 13 causes phase modulation of -λ / 4, and the light of the second circular polarization component, for example, the left circular polarization component And is emitted from the first retardation layer 13.
Here, since the second region 13b of the first dimming control panel 10 faces the fourth region 23b of the second dimming control panel 20, the light is emitted from the second region 13b of the first retardation layer 13. The light is incident on the fourth region 23 b of the second dimming control panel 20. The light incident on the fourth region 23b undergoes λ / 4 phase modulation. That is, in the fourth region 23b, phase modulation that cancels phase modulation in the first retardation layer 13 in the second region 13b occurs. Therefore, the light transmitted through the second retardation layer 23 is in the same polarization state as before entering the first retardation layer 13, that is, the polarization state immediately after transmitting through the first polarization layer 12. Therefore, the light transmitted through the second region 13b of the first dimming control panel 10 passes through the fourth region 23b of the second dimming control panel 20 as it is.
From the above, as shown in FIG. 4A, the third region 23a (fourth region 23b) of the second dimming control panel 20 is replaced with the first region 13a (second region 13b) of the first dimming control panel 10. ), The light incident from the front surface side of the first dimming control panel 10 can be emitted to the back side on the entire surface of the light control device 1.

  As shown in FIG. 4B, the third area 23a (fourth area 23b) of the second dimming control panel 20 is replaced with the second area 13b (first area 13a) of the first dimming control panel 10. , The light that has entered the first region 13a out of the light transmitted through the first polarizing layer 12 undergoes phase modulation of λ / 4, and the light of the first circularly polarized component, for example, right circularly polarized light It becomes component light and is emitted from the first retardation layer 13.

  Here, since the first region 13a of the first dimming control panel 10 faces the fourth region 23b of the second dimming control panel 20, the light is emitted from the first region 13a of the first retardation layer 13. The light is incident on the fourth region 23 b of the second dimming control panel 20. The light incident on the fourth region 23b undergoes λ / 4 phase modulation. Therefore, the light incident on the fourth region 23 b is transmitted through the first polarizing layer 12 and then undergoes phase modulation of λ / 2 before entering the second polarizing layer 22. For this reason, before the light of the first linearly polarized light component transmitted through the first polarizing layer 12, for example, the P wave, enters the second polarizing layer 22, the first linearly polarized light component has a vibration direction orthogonal to the first linearly polarized light component. Two linearly polarized light components, for example, S waves are converted. And since the 1st polarizing layer 12 and the 2nd polarizing layer 22 are arrange | positioned by the positional relationship of parallel Nicol, the light which injected into the 2nd phase difference layer 23 will be absorbed, and 2nd light control It cannot pass through the control panel 20.

  Similarly, the light incident on the second region 13b out of the light incident on the first retardation layer 13 is subjected to -λ / 4 phase modulation, and then the second position facing the second region 13b. In order to cause -λ / 4 phase modulation in the third region 23 a of the phase difference layer 23, the light incident on the third region passes through the first polarizing layer 12 and then enters the second polarizing layer 22. This results in a phase modulation of -λ / 2. For this reason, before the light of the first linearly polarized light component transmitted through the first polarizing layer 12, for example, the P wave, enters the second polarizing layer 22, the first linearly polarized light component has a vibration direction orthogonal to the first linearly polarized light component. Two linearly polarized light components, for example, S waves are converted. Therefore, the light incident on the second retardation layer 23 is absorbed and cannot pass through the second dimming control panel 20.

  4B, the third area 23a (fourth area 23b) of the second dimming control panel 20 is changed to the second area 13b (first area 13a) of the first dimming control panel 10. ), The light incident from the front side of the first dimming control panel 10 cannot be emitted to the back side on the entire surface of the light control device 1.

Next, another form of the layer configuration of the first dimming control panel 10 and the second dimming control panel 20 will be described.
FIG. 5 is a diagram for explaining another form of the layer configuration of the first dimming control panel and the second dimming control panel, and each drawing of FIG. 5 is a cross-sectional view corresponding to FIG. .
As shown in FIG. 5A, the first dimming control panel 10 includes the first polarizing layer 12 on the surface side (−Z side) of the first base material 11, and the back side of the first base material 11. The first retardation layer 13 may be provided on the (+ Z side). Similarly, in the second dimming control panel 20, the second polarizing layer 22 is provided on the back side (+ Z side) of the second base material 21, and on the surface side (−Z side) of the second base material 21. A second retardation layer 23 may be provided.

  Thereby, it is possible to disperse and arrange the polarizing layer and the retardation layer on each of both surfaces of the substrate, as compared with the case where the polarizing layer and the retardation layer are disposed on one surface of the substrate, When the dimming control panel is erected in the vertical direction (Y direction), it is possible to prevent the entire dimming control panel from being warped. Such a configuration is particularly effective when the dimming control panel has a large outer shape as viewed from the thickness direction (for example, 1000 mm × 800 mm) and the dimming control panel is easily warped.

Further, as shown in FIG. 5B, the first light control panel 10 includes a first retardation layer 13 and a first polarizing layer 12 sequentially laminated on the surface side (−Z side) of the first base material 11. You may be made to do. Similarly, the second light control panel 20 may be configured such that the second retardation layer 23 and the second polarizing layer 22 are sequentially laminated on the back side (+ Z side) of the second base material 21.
By setting it as such a form, between the 1st phase difference layer 13 of the 1st light control panel 10 and the 2nd phase difference layer 23 of the 2nd light control panel 20, the 1st base material 11, The predetermined distance can be provided by the thickness of the second base material 21. Thereby, when the light control apparatus 1 is observed from a direction inclined in the left-right direction with respect to the thickness direction, the first region (second region) and the third region (fourth region) can overlap and can be seen through. Thus, there will be both a see-through area and a non-see-through area in which the first area (second area) and the fourth area (third area) overlap and become impossible to see through. Further, by changing the observation direction (angle), the ratio of the fluoroscopic region and the non-transparent region changes.

Here, the positions of the fluoroscopic area and the non-transparent area grasped by the right eye of the observer are different from the positions of the fluoroscopic area and the non-transparent area grasped by the left eye. Therefore, when the light control apparatus 1 of this embodiment is observed from a position inclined in the left-right direction with respect to the thickness direction, the non-permeable region is formed as a stereoscopic image with a sense of depth by the parallax between the eyes of the observer. Thus, the design of the light control device 1 can be improved.
The distance between the first retardation layer 13 of the first dimming control panel 10 and the second retardation layer 23 of the second dimming control panel 20 is not less than ½ of the width w of the first region and the like. It is desirable to be less than double. If the distance is less than ½ of the width w of the first region or the like, it is not desirable because the above-described stereoscopic image cannot be sufficiently grasped by the observer's vision, and more than 10 times the width w. Is too large, it is not desirable because the above-mentioned effects cannot be obtained sufficiently.

  The dimming control panel of the other form described above may be used in combination with the dimming control panel of the above-described embodiment (FIGS. 2 and 3) or another dimming control panel of another form. For example, the first dimming control panel 10 shown in FIG. 2 and the second dimming control panel 20 shown in FIG. 5A are combined, or the first dimming control panel 10 shown in FIG. You may combine with the 2nd light control panel 20 shown in Drawing 5 (b).

Next, other forms of the notches 10a and 30a provided in the first dimming control panel 10 and the back panel 30 will be described. In the following description, the cutout portion 10a of the first dimming control panel 10 will be described, but the same applies to the cutout portion 30a of the back panel 30.
FIG. 6 is a diagram for explaining another form of the notch provided in the first dimming control panel and the back panel.

As shown in FIG. 6 (a), the notch portion 10a is provided with a step portion 10b that protrudes in the left-right direction (X direction, first arrangement direction) from the lower surface to be smaller than the depth h. Also good. For example, when the depth in the left-right direction of the step portion 10b is set to h / 2, the second dimming control panel 20 is connected to the first dimming control panel 10 via the step portion 10b provided in the notch portion 10a. The first region and the second region can be overlapped with the third region and the fourth region, respectively, so that the incident light of the light control device 1 can be more controlled. Can be done finely.
Note that the depth in the left-right direction of the stepped portion 10b can be set as appropriate as long as it is smaller than the depth h of the cutout portion 10a, and the stepped portion 10b has a plurality of steps in a stepped shape in the cutout portion 10a. You may make it form.

As shown in FIG. 6B, the cutout portion 10 a may be provided with a curved surface 10 c that connects the bottom surface of the cutout portion 10 a and the end surface of the first dimming control panel 10. Accordingly, the second dimming control panel 20 can be pushed in from the end face of the first dimming control panel 10 along the bottom surface of the notch 10a, and the second dimming control panel 20 is gradually moved in the left-right direction. Can be moved. Therefore, the control of the incident light of the light control device 1 can be performed more finely.
In addition, you may make it provide the slope which connects the bottom face and the end surface of the 1st light control panel 10 in the notch part 10a instead of the above-mentioned curved surface 10c.

As described above, in the light control device 1 of the present embodiment, the notch portions 10a are provided at both end edges in the first arrangement direction (X direction) of the first dimming control panel 10, and the depth h of the notch portion is determined. Since the relationship with the width w of each region satisfies 0.75 × w ≦ h ≦ 1.25 × w, the amount of movement of the second dimming control panel 20 pushed in the left-right direction is provided in each retardation layer. It can be made approximately equal to the width w of each region. As a result, the light control device 1 performs the simple operation of pushing the second dimming control panel 20 in the left-right direction via the notches 10a, 30a, thereby providing the third regions 23a, fourth of the second retardation layer 23. The regions 23b can be arranged to face the first region 13a or the second region 13b of the first retardation layer 13, respectively, and adjustment of incident light can be facilitated.
Moreover, since the notches 10a and 30a do not protrude from the outer shape (surface) of the members constituting the light control device, the degree of freedom of the arrangement form of the light control device 1 can be improved. Furthermore, a panel moving unit that moves the second dimming control panel without increasing the number of parts of the light control device 1 is realized simply by providing notches 10a and 30a in the first dimming control panel 10 and the back panel 30. can do.

(Second Embodiment)
Next, the light control apparatus 101 of the second embodiment will be described.
FIG. 7 is a diagram illustrating the light control device of the second embodiment. FIG. 7A is an exploded perspective view of the light control device. FIG.7 (b) is the front view seen from the thickness direction of the light control apparatus.
In the following description and drawings, parts having the same functions as those of the first embodiment described above are denoted by the same reference numerals or the same reference numerals at the end (last two digits), and repeated descriptions are omitted as appropriate. To do.

As illustrated in FIG. 7, the light control apparatus 101 according to the present embodiment includes a first light control panel 110 and a back panel 30 provided with notches 10 a and 30 a instead of the first light control panel 10 and the rear panel 30. The first through hole 110a is different from the light control device 1 of the first embodiment described above in that the second through hole 120a is provided in the second dimming control panel 120, respectively.
The first dimming control panel 110 is a plate-like member formed in a rectangular shape having optical transparency, and is below (−Y side) in the vertical direction (Y direction) and in the left-right direction (X 1st through-hole 110a (panel movement part) is provided in the approximate center of (direction).
The second dimming control panel 120 is a plate-like member formed in a rectangular shape having optical transparency, and is below (−Y side) in the vertical direction (Y direction) and in the left-right direction (X A circular second through-hole 120a (panel moving part) is provided in the approximate center of the direction.

  As shown in FIG. 7B, the first through hole 110a is formed in a long hole shape whose length in the left-right direction (X direction) is longer than the length in the vertical direction (Y direction). The first through hole 110a is provided at a position corresponding to the second through hole 120a. Specifically, when the right (+ X side) end surfaces of the first dimming control panel 110 and the second dimming control panel 120 are in the same plane, the second through hole 120a is the right side in the first through hole 110a. When the left (−X side) end surface of the first dimming control panel 110 and the second dimming control panel 120 is located in the same plane, the second through hole 120a is the first through hole 110a. The first through-hole 110a and the second through-hole 120a are provided in the first dimming control panel 110 and the second dimming control panel 120, respectively, so as to be located at the left end portion inside.

With the above configuration, the light control apparatus 101 according to the present embodiment inserts, for example, a finger into the first through hole 110a and the second through hole 120a, and enters the second through hole 120a along the first through hole 110a. By moving the inserted finger in the left-right direction (X direction), the second dimming control panel 20 can be moved relative to the first dimming control panel 10 in the left-right direction.
Here, when the hole diameter of the second through hole 120a is d, the width D in the left-right direction of the first through hole 110a satisfies 0.75 × (d + w) ≦ D ≦ 1.25 (d + w). It is desirable to be formed. In addition, w is the dimension of the width in the left-right direction of the area (first area to fourth area) provided in the first dimming control panel 10 and the second dimming control panel 20 as in the first embodiment. It is.
By defining the width D of the first through hole 110a within the above numerical range, the amount of movement of the second dimming control panel 20 moved in the left-right direction via the first through hole 110a and the second through hole 120a is set. The third region and the fourth region of the second retardation layer can be made substantially equal to the width w of each region provided in each retardation layer, respectively, and the first region or the second region of the first retardation layer, respectively. Can be arranged to face each other.

  As described above, the light control device 101 according to the present embodiment moves the second dimming control panel 20 in the left-right direction via the first through hole 110a and the second through hole 120a, similarly to the light control device 1 according to the first embodiment. The third region and the fourth region of the second retardation layer can be arranged to face the first region or the second region of the first retardation layer, respectively, by a simple operation of moving to Light adjustment can be facilitated. Moreover, since each through-hole 110a, 120a does not protrude from the surface of each member which comprises the light control apparatus 101, the freedom degree of the arrangement | positioning form of the light control apparatus 101 can be improved.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described later, and these are also included in the present invention. Within the technical scope. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. It should be noted that the above-described embodiment and modifications described later can be used in appropriate combination, but detailed description thereof is omitted.

(Deformation)
(1) In the above-described embodiment, a specific direction is specified by appropriately defining the direction of the slow axis of each polarizing layer of the first dimming control panel 10 and the second dimming control panel 20 and the retardation of each retardation layer. In order to improve the design of the light control device 1 in the light-shielded state, light of most wavelength components excluding the component light is shielded so that it is in a dark color even in the light-shielded state. May be.

(2) In the above-described first embodiment, the cutout portions 10a and 30a have been shown as examples provided at both ends in the left-right direction of the first dimming control panel 10 and the back panel 30, respectively. For example, it may be provided at one end edge in the left-right direction. In this case, from the viewpoint of enabling the second dimming control panel pushed by the notches 10a and 30a to be returned to the opposite side, the width dimension in the left-right direction of the second dimming control panel is the first dimming control panel. You may make it form like the width dimension in 10 left-right directions.

(3) In the above-described first embodiment, the cutout portions 10a and 30a are shown as being formed in an arc shape. However, the present invention is not limited to this example. For example, the cutout portions 10a and 30a are not limited to this. It may be formed in a partial shape or the like.

(4) In the second embodiment described above, the example in which the second through hole 120a is provided in the second dimming control panel 120 has been described. However, the present invention is not limited to this. For example, instead of the second through hole You may make it form a hollow (non-penetrating hole). Even if it is such a form, the 2nd light control panel 120 can be easily moved to the left-right direction by inserting an observer's finger etc. in a hollow.

(5) In the above-described embodiment, a layer having a hard coat function may be provided on the surface of the first dimming control panel 10 or the back surface of the back panel 30. Thereby, the scratch resistance of the front surface and the back surface of the light control device 1 can be improved. The layer having the hard coat function is formed by, for example, cross-linking an electron beam curable resin with an electron beam on the surface side surface of the first light control panel 10 or the back side surface of the back panel 30 to obtain a desired hardness. It is formed by controlling.

(6) In the above-described embodiment, the surface where the first dimming control panel 10 and the rear panel 30 and the second dimming control panel 20 are in contact, that is, the first dimming control panel 10 and the rear surface. A sliding member (for example, a fluorine-based tape) may be provided on each of the surface side surface and the back surface side surface of the second dimming control panel 20 and the surface side surface of the back panel 30. Thereby, sliding resistance with the 2nd light control panel 20 and the 1st light control panel 10 and the back panel 30 can be reduced, and movement of the 2nd light control panel 20 is made easier. Can do. In this case, from the viewpoint of preventing light transmitted through the light control device 1 as much as possible, the sliding member is desirably provided at the upper edge or the lower edge of each panel.

(7) In the above-described embodiment, the example in which the first polarizing layer 12 and the second polarizing layer 22 are arranged in the parallel Nicol positional relationship is shown, but the present invention is not limited to this, and the crossed Nicol position. You may make it arrange | position by relationship.

(8) In the above-described embodiment, the first polarizing layer 12 and the second polarizing layer 22 have been described as an example using an absorption-type polarizing plate. However, the present invention is not limited to this. For example, the first polarizing layer At least one of 12 and the second polarizing layer 22 may be a reflective polarizing plate (for example, a wire grid polarizing plate). Thereby, the light blocked by the light control device 1 can be reflected like a mirror, and the design of the light control device can be improved.

DESCRIPTION OF SYMBOLS 1,101 Light control apparatus 10,110 1st light control panel 10a Notch part 110a 1st through-hole 11 1st base material 12 1st polarizing layer 13 1st phase difference layer 20, 120 2nd light control panel 120a 2nd through-hole 21 2nd base material 22 2nd polarizing layer 23 2nd phase difference layer 30, 130 Back panel 30a Notch 40 Spacer

Claims (5)

A first light control panel having a first polarizing layer and a first retardation layer in which first regions and second regions having different slow axis directions are alternately arranged in a first arrangement direction;
A second polarizing layer; and a second retardation layer in which third and fourth regions having different slow axis directions are alternately arranged in the first arrangement direction, and faces the first dimming control panel A second dimming control panel arranged at a position to
Of the first dimming control panel and the second dimming control panel, the first dimming control panel is provided at least in the first dimming control panel, and the second dimming control panel is arranged with respect to the first dimming control panel. A panel moving part that moves in the arrangement direction is formed,
The panel moving part is formed by a notch or a hole;
A light control device. The light control device according to claim 1,
The panel moving part is a notch provided at least at one end edge in the first arrangement direction of the first dimming control panel,
0.75 × w ≦ h ≦ 1.25 × w, where h is the depth in the first arrangement direction of the notch and w is the width of the first region in the first arrangement direction. Filling,
A light control device. The light control device according to claim 2,
The notch is provided with a stepped portion that protrudes from the bottom surface in the first arrangement direction to be smaller than the depth dimension of the notch,
A light control device. The light control device according to claim 2,
A curved surface or a slope connecting the bottom surface of the notch and the end surface of the first dimming control panel is formed in the notch,
A light control device. The light control device according to claim 1,
The panel moving part is composed of a first through hole provided in the first dimming control panel and a second through hole or depression provided in the second dimming control panel,
The first through hole is provided at a position corresponding to the second through hole or the depression,
When the width dimension of the first through hole in the first arrangement direction is D, the width of the second through hole or the recess is d, and the width of the first region is w, 0.75 × ( d + w) ≦ D ≦ 1.25 (d + w),
A light control device.

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