CN210488145U - Polaroid - Google Patents

Abstract

The utility model discloses a polaroid, which comprises a first polaroid strip and a second polaroid strip which are arranged in a staggered manner, wherein the first polaroid strip and the second polaroid strip have the same width; the utility model changes the rotation of the polaroid into translation, can realize the adjustment function only by moving the distance of at least 1 width of the polaroid, can select the polaroids with different angle differences according to different requirements, and realizes the effect of different optical shelters; the polaroid of the utility model can simply realize shading effect, and has little influence on the size and structure of the window frame; in addition, the shading function can be realized only with lower cost, and the operating cost is low.

Description

Polaroid

Technical Field

The utility model belongs to the technical field of optics and specifically relates to a polaroid.

Background

Polarizers are commonly used in display technologies, such as liquid crystal display technologies, in which two polarizers are respectively attached to the top and bottom of a display to realize the display function of a liquid crystal display.

In the prior art of the polarizer, two methods are available for realizing window shading. The method comprises the following steps: the two polaroids are parallel and opposite to each other, and one polaroid is rotated relative to the other polaroid by a certain angle, so that the light-transmitting state can be gradually changed into the light-shielding state, or the light-shielding state is gradually changed into the light-transmitting state.

The second method comprises the following steps: in the related art of LCD display, liquid crystal is filled between two polarizers, and an electric field is applied. The conversion between light transmission and light shielding is realized through the opening and closing of the electric field.

In the first method, a certain time is needed for rotation, so that the conversion speed is slow, a relatively complex rotating device is needed, and the size and the appearance shape of the frame of the window are limited. The second method needs to use liquid crystal and continuous electric field, and the manufacturing process is complex, so the manufacturing cost and the use cost are higher.

Therefore, the conventional polarizer technology is difficult to be applied to the light-shielding field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems, the two polaroids are leaned together, the conversion of light transmission and light shading can be realized only by staggering a small distance, and the polaroid is simple to manufacture, low in cost and simple and convenient to use.

The shading of the present invention is not limited to completely shading light intensity, and can be partial light intensity shading or complete light intensity shading.

The polarizer can realize the conversion between light transmission and light shading by staggering (2 m-1) d (wherein m is 1, 2 and 3 … …, and 2m is less than or equal to n, and preferably m is 1).

The polarizer can be applied to shielding of windows. For example, two polarizers are parallel and close together, and are staggered by a distance of (2 m-1) d (where m is 1, 2, 3 … …, and 2m is less than n, preferably m is 1), so that the light transmission and light shielding conversion is realized.

The scheme is realized as follows:

a polarizer comprises first polarizing strips and second polarizing strips which are arranged in a staggered mode, wherein the widths of the first polarizing strips and the widths of the second polarizing strips are both d.

Preferably, the angle of the first light deflecting strip is α₁The angle of the second light-deflecting strip is α₂Let the angular difference α be abs (α)₁－α₂)，α≠0°。

Preferably, the angular difference is α, 45 DEG- α -135 deg.

Preferably, the angular difference is in the range of α, more preferably 60 ° - α ° -120 °.

Preferably, the angular difference is in the range of α, and more preferably α ° is 90 °.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses change the rotation of polaroid into the translation, only need to remove the distance of 1 minimum polarizing strip and just can realize the regulatory action, can select the polarizing strip of different angle differences according to the demand of difference, realize the effect that different optics sheltered from.

2. The utility model can be applied to the shading field, and can conveniently realize the conversion between shading and light transmission; the utility model discloses a polaroid is owing to only need the translation can realize shading and printing opacity conversion, consequently can use the window of rectangle. The polaroid of the utility model only needs to move the distance of 1 polaroid strip and can be rectangular, thus having little influence on the shape of the window and the size and structure of the frame; in addition, the shading function can be realized only with lower cost, and the operation cost is low; compared with the traditional curtain for shading, the curtain occupies no space, is not required to be detached and washed frequently, and is more modern.

Drawings

FIG. 1 is a schematic structural diagram of a polarizer according to the present invention;

FIG. 2 is a schematic diagram of the position of the two polarizers when transmitting light;

fig. 3 is a schematic diagram of positions of the two polarizers during shading of the present invention:

the labels in the figure are: 1. a substrate; 2. a first polarizing strip; 3. a second light polarizing bar.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

As shown in fig. 1, a polarizer includes a first polarizing strip and a second polarizing strip arranged in a staggered manner, and the first polarizing strip and the second polarizing strip have the same width.

The angle of the first light-deflecting strip is α₁The angle of the second light-deflecting strip is α₂Let the angular difference α be abs (α)₁－α₂)，α≠0°。

The width of the polarizing strip is not limited and may be determined according to the design requirements of the use environment and the production process.

Two polaroids are taken to be parallel and arranged close to each other, and the distance between the connected polaroids is not particularly limited, and the polaroids can be tightly attached to each other or can be spaced at a certain distance.

After the light passes through the first polarizer, the light becomes n polarized lights with two different angles.

Two such polarizers are arranged in parallel, so that the plane is a yz plane, which is perpendicular to the xy plane, and two strip polarizers of each polarizer are aligned with the same strip polarizer, respectively, as shown in fig. 2. The two polaroids are respectively a polaroid 1 and a polaroid 2, wherein the polaroid 1 is composed of n strip polaroids with two different angles, and the numbers of the two strip polaroids are 1-1, 1-2 and 1-3 … … 1-n respectively; the polarizer 2 is composed of n strip polarizers with two different angles, and the numbers are 1-1, 1-2 and 1-3 … … 1-n respectively.

Natural light is taken as an example, and the application range of the patent is not limited to natural light. When natural light enters the polarizer 1 from the left side, the light becomes polarized light 1, and the polarized light 1 is composed of n polarized lights with light intensities I_1－1、I_1－2、I_1－3……I_1－n. The polarized light 1 passes through the polarizer 2 and becomes polarized light 2, the polarized light 2 is composed of n polarized lights with light intensity I_2－1、I_2－2、I_2－3……I_2－n. According to the malus theorem, the light intensity relationship between the polarized light 1 and the polarized light 2 can be obtained:

I_2－1＝I_1－1cos(α₁－α₁)＝I_1－1

I_2－2＝I_1－2cos(α₂－α₂)＝I_1－2

I_2－3＝I_1－3cos(α₁－α₁)＝I_1－3

……

I_2－n＝I_1－n

that is, the polarizer 2 does not affect the polarized light 1 at this time, and the light can pass through the two polarizers.

The polarizer 2 is moved in the y-axis direction by a distance of (2 m-1) d, where m is 1, 2, 3 … …, and 2m ≦ n, preferably m is 1. Taking m as 1 as an example, i.e., the distance d is moved, as shown in fig. 3. In this case, the polarized light 1 passes through the polarizer 2 and becomes polarized light 2 ', and the polarized light 2 ' is composed of n polarized lights, and the light intensities thereof are I '_2－1、I’_2－2、I’_2－3……I’_2－n. Then according to the malus theorem:

I’_2－1＝I_1－1cos(abs(α₁－α₂))＝I_1－1cosα

I’_2－2＝I_1－2cos(abs(α₁－α₂))＝I_1－2cosα

I’_2－3＝I_1－3cos(abs(α₁－α₂))＝I_1－3cosα

……

I’_2－n－1＝I_1－n－1cos(abs(α₁－α₂))＝I_1－n－1cosα

I’_2－n＝I_1－n

since 0 DEG < α DEG < 180 DEG, 0 DEG cos α < 1.

When α is 90 °, cos α is 0, then:

I’_2－1＝I’_2－2＝I’_2－3……＝I’_2－n－1and (0), namely, the two polarizers play a complete shading effect.

In practical application, it is not necessary to completely shield light, so that the requirement can be met by selecting an appropriate angle difference α according to the actual required light shielding effect and combining with a specific polarizer product.

Because the prior polarizer technology needs to rotate a certain angle to realize the conversion between shading and transmitting, and when the polarizer is rotated to shade, the shape of the window can only be a circular structure, and a complex rotating mechanism is also needed to rotate, so that the shape of the window is limited, and the size, the thickness and the stability of the frame of the window are influenced, thereby increasing the manufacturing cost and the cost of later maintenance.

For exterior wall glass, window glass and other windows, the process difficulty of manufacturing a circular structure is high, and the circular structure is not beneficial to large-area use, so the polaroid in the prior art is inconvenient to be applied to windows of buildings or vehicles, and in the process of adjusting the light intensity of the window, shielding objects such as curtains and the like are required to be added for adjustment.

The utility model discloses creative utility model of people has provided a polaroid, only need to remove the distance of 1 minimum polaroid width and just can realize shading and non-light tight conversion, can also choose the polaroid strip of different angle differences for use according to the demand of difference, realize the effect that different optics sheltered from.

In the prior art, as the double-layer transparency-adjustable shading structure disclosed in application No. 201520181288.7, shading is realized by sliding two polarizer plates provided with a plurality of polarizer plates with different angle differences, but the patent requires that the angles of the strip-shaped polarizer of each polarizer plate are different and gradually changed, the production process flow is more complex, the cutting difficulty of the polarizer plate is greater, the manufacturing cost is higher, and in the document, the shading function is to be completely displayed, the realization can be realized only by moving the distance of at least 1/4 polarizer plates, and the application only needs to move the distance of a single polarizer plate, so the application is more simplified, the cost is lower, and the realized effect is better.

Example 1

Cutting a raw roll of the same polarizer into strip-shaped polarizers with the width of 10mm and the length of 1200mm according to 0 degrees and 90 degrees respectively, and tightly attaching the strip-shaped polarizers to a PET film according to the sequence of 0 degree, 90 degrees, 0 degree and 90 degrees … … to form the polarizer of 1200 multiplied by 1200. The polarizer formed in this way can realize the light shielding function by staggering the distance of 10 mm.

Example 2

And cutting the original roll of the same polaroid into strip polaroids with the width of 8mm and the length of 1200mm according to 45 degrees. The strip polarizers were attached to the PET film in the order of front, back, front, and back … … to form a 1200 × 1200 polarizer. The reverse sticking refers to that the strip-shaped polarizer is rotated by 180 degrees in a plane and then stuck when being stuck relative to the front sticking. The polarizer formed in this way can realize the light shielding function by staggering the distance of 8 mm.

Example 3

Cutting the same polaroid reel into strip polaroids with width of 5mm and length of 1200mm at 0 deg. and 90 deg. respectively, and closely attaching the strip polaroids to glass in the order of 0 deg., 90 deg., 0 deg. and 90 deg. … … to form 1000X 1200 polaroids. The polarizer formed in this way can realize the light shielding function by staggering the distance of 5 mm. The two polaroids are arranged on the window, so that the two pieces of glass can be staggered by 5mm relatively in a manual or electric mode, and the light transmission and shading functions of the window can be realized.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (2)

1. The polarizer is characterized by comprising a first polarizing strip and a second polarizing strip which are arranged in a staggered mode, wherein the widths of the first polarizing strip and the second polarizing strip are the same, and the angle of the first polarizing strip is α₁The angle of the second light-deflecting strip is α₂Let the angle difference α be abs (α)₁－α₂) And α is not equal to 0, and the angle difference is α, and is more than or equal to 45 degrees and less than or equal to α and less than or equal to 135 degrees.

2. The polarizer according to claim 1, wherein said angular difference is α in the range of 60 ° - α ° -120 °.

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