CN216210293U

CN216210293U - Polaroid structure for sunglasses and polarized sunglasses

Info

Publication number: CN216210293U
Application number: CN202122746446.7U
Authority: CN
Inventors: 周文贤; 李铭全
Original assignee: Winda Opto Electronic Co ltd
Current assignee: Winda Opto Electronic Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-05
Anticipated expiration: 2031-11-10

Abstract

The utility model relates to the technical field of polaroids, and discloses a polaroid structure for sunglasses and polarized sunglasses, wherein the polaroid structure comprises a protective film, a first polarizer protective layer, a polarizer sub-layer, a second polarizer sub-protective layer, a pressure-sensitive adhesive layer and a release film which are sequentially laminated and bonded. According to the utility model, the first polarizer sub-protection layer is provided with the light-following elliptical polarization light conversion layer, so that when light of the display screen is incident and passes through the polarizer structure, linearly polarized light is converted into elliptical polarization light, an included angle of 90 degrees between an absorption axis of the polarizer of the display screen and an absorption axis of the polarizer of sunglasses is avoided, and the problem that images on the display screen cannot be seen through sunglasses is further avoided.

Description

Polaroid structure for sunglasses and polarized sunglasses

Technical Field

The utility model relates to the technical field of polaroids, in particular to a polaroid structure for sunglasses and polarized sunglasses.

Background

When driving, besides the glare of sunlight, the device also has the problems of road surface reflection, front vehicle rear windshield reflection, building glass wall reflection at two sides and the like, which cause errors in distinguishing and cause road traffic accidents. Although the sun shield is arranged in the automobile, the sun shield can obstruct the view when resisting light. The driver can select suitable sunglasses, and the protection eyes do not receive the injury of highlight, select the polarisation performance simultaneously, can the anti-dazzle.

However, the sunglasses suitable for drivers in driving are required to be worn more frequently, such as the sunglasses cannot be worn too deeply, have certain transmittance, and cannot be worn when the light is insufficient, such as passing through a tunnel. Sunglasses are generally deeper (completely black) sunglasses or sunglasses with a manual flip-open function, and when wearing such sunglasses, from a place with strong light to a place with weak light, the sunglasses need to be moved away or the flip cover needs to be lifted to have a better view, and if the environment is frequently alternated, the trouble of a driver is increased by frequently operating the sunglasses.

In the prior art, automatic photosensitive sunglasses can automatically adjust lenses according to the change of illumination environments, liquid crystal is used as the lenses, and the light transmittance of the lenses is changed by changing the voltage applied to the liquid crystal lenses. The transmittance of the polaroid for the sunglasses in the current market is lower than 15%, the transmittance is low, and the polaroid is difficult to be popularized and used in cooperation with automatic photosensitive sunglasses.

Simultaneously along with the display screen of car is more and more, when the driver wore the polaroid sunglasses and drives, at some angle display screen like rear-view mirror display screen, when the polaroid optical axis of sunglasses and the polaroid optical axis of display screen become 90 degrees, cause the problem that the display screen sees unclear.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide a polaroid for sunglasses with high transmittance, which is particularly applied to automatic photosensitive sunglasses; and the problem that the display screen cannot be clearly watched after wearing the polarized sunglasses is solved.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A polaroid structure for solar glasses is composed of a protective film, a first polarizer protective layer, a polarizer sub-layer, a second polarizer protective layer, a pressure-sensitive adhesive layer and a release film which are sequentially laminated and bonded, and is characterized in that the first polarizer protective layer is an elliptical polarization conversion layer which is a quarter-wave plate layer or a super-complex refractive polyester film optical film layer.

More preferably, the surface of the quarter-wave plate layer or the super-birefringence polyester film optical film layer is coated with a scratch-resistant hardening film.

More preferably, the polarizer sublayer has a transmittance of 40 to 60%, a polarization degree of 75 to 98%, and a hue as of-1 to 1 NBS and bs of-1 to 1 NBS.

More preferably, the second polarizer protective layer is a cellulose triacetate film, a cycloolefin polymer film, a polymethyl methacrylate film, or a polyethylene terephthalate film.

Polarized sunglasses, comprising: the liquid crystal display panel comprises a first polaroid, a liquid crystal box and a second polaroid, wherein the first polaroid and the second polaroid are respectively arranged on two sides of the liquid crystal box; the polarizer structure for the solar glasses is characterized in that the first polarizer is the polarizer structure for the solar glasses, and the first polarizer is adhered to the liquid crystal box through the pressure-sensitive adhesive layer.

More preferably, the absorption axis of the first polarizer and the absorption axis of the second polarizer form an included angle of 90 °.

More preferably, the liquid crystal cell has a light sensing module for sensing ambient light and a microprocessor for adjusting the brightness state of the liquid crystal lens.

The beneficial effects of the utility model are as follows.

According to the polarizer structure provided by the utility model, the first polarizer sub-protection layer is provided with the light-along-elliptical polarization light conversion layer, so that linearly polarized light is converted into elliptically polarized light when light of the display screen is incident and passes through the polarizer structure, an included angle of 90 degrees between an absorption axis of the polarizer of the display screen and an absorption axis of the polarizer of sunglasses is avoided, and the problem that images on the display screen cannot be seen through the sunglasses is further avoided.

By adopting the polaroid structure, when the liquid crystal box is in a closed state, the transmittance of the polarized sunglasses is less than 10%, and the polarized sunglasses have lower transmittance (deeper) as common polarized sunglasses, so that strong light can be prevented from protecting the sunglasses. When light is weakened, the photosensitive module for sensing ambient luminosity and the microprocessor for adjusting the dark state of the liquid crystal lens act to enable the liquid crystal box to be in an open state, and the transmittance of the polarized sunglasses is increased (namely, becomes shallow) along with the rotation of the liquid crystal, namely, the transmittance can be increased to 42% from 8%. The method is directly suitable for different light environments and does not need frequent operation. When the intensity of the light incident to the display screen is higher, the voltage on the light valve is adjusted to be increased so as to reduce the reflected light and achieve the anti-dazzle effect.

Drawings

Fig. 1 is a schematic diagram of a polarizer structure according to the present invention.

Fig. 2 is a schematic view of polarized sunglasses according to the present invention.

Reference numerals indicate the same.

1-1: protective film, 1-2: first polarizer protective layer, 1-3: polarizer sublayer, 1-4: second polarizer protective layer, 1-5: pressure-sensitive adhesive layer, 1-6: and (4) a release film.

1: first polarizer, 2: liquid crystal cell, 3: a second polarizer.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the utility model, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Example 1.

As shown in fig. 1, a polarizer structure for solar glasses is composed of a protective film 1-1, a first polarizer protective layer 1-2, a polarizer sub-layer 1-3, a second polarizer protective layer 1-4, a pressure-sensitive adhesive layer 1-5 and a release film 1-6, which are sequentially laminated and bonded, and is characterized in that the first polarizer protective layer 1-2 is an elliptically polarized light conversion layer, the elliptically polarized light conversion layer is a quarter-wave plate layer or a super-complex refractive polyester film optical film layer, and a scratch-resistant hardened film is coated on the surface of the quarter-wave plate layer or the super-complex refractive polyester film optical film layer.

Compared with the prior art, the polaroid structure for the solar glasses provided by the embodiment has the advantages that: the light emitted by the display screen is linearly polarized light, and polarizing pieces are arranged on polarizing sunglasses and liquid crystal sunglasses; when the user wears the sunglasses in the car, when the sunglasses and the display screen form a certain angle, the user can not watch the image on the display screen through the sunglasses, and the use is inconvenient. In the embodiment, the polarizer structure is provided with the light-following elliptical polarized light conversion layer, when light incident on the display screen passes through the polarizer structure, linearly polarized light is converted into elliptical polarized light, so that a 90-degree included angle formed between an absorption axis of the polarizer of the display screen and an absorption axis of the polarizer of the sunglasses is avoided, and the problem that images on the display screen cannot be seen through the sunglasses is further avoided.

In this embodiment, the first polarizer sub-protective layer 1-2 and the second polarizer sub-protective layer 1-4 are bonded to the polarizer sub-layers 1-3 by corresponding adhesive layers, respectively. The transmittance of the polarizer sublayers 1-3 is 50%, the polarization degree is 85%, the hue as is 0 NBS, and the bs is 0 NBS. The second polarizer sub-protective layer 1-4 is a cellulose triacetate film.

In some embodiments, the sub-layer 1-3 of the polarizer has a transmittance of 40 to 60%, a polarization degree of 75 to 98%, a hue as of-1 to 1 NBS, and a bs of-1 to 1 NBS. The second polarizer protective layer 1-4 is a cycloolefin polymer film, a polymethyl methacrylate film or a polyethylene terephthalate film; the present embodiment is not limited.

It should be noted that, in other embodiments, the scratch-resistant hardened film may be omitted, and is not limited to this embodiment.

Example 2.

As shown in fig. 2, a polarized sunglass includes: the liquid crystal display panel comprises a first polarizer 1, a liquid crystal box 2 and a second polarizer 3, wherein the first polarizer 1 and the second polarizer 3 are respectively arranged at two sides of the liquid crystal box 2; the polarizer structure for the solar glasses is characterized in that the first polarizer 1 is the polarizer structure for the solar glasses in embodiment 1, and the first polarizer 1 and the liquid crystal box 2 are bonded through the pressure-sensitive adhesive layer.

When a driver wears the polarized sunglasses to watch the display screen, linearly polarized light emitted by the display screen is emitted through the LCD, and when the linearly polarized light passes through the elliptical polarized light conversion layer on the first polarizer 1, the linearly polarized light is converted into elliptical polarized light by the elliptical polarized light no matter the polarization direction of the linearly polarized light is in the horizontal direction, the vertical direction or other directions, and the elliptical polarized light can penetrate through the polarizers on the polarized sunglasses, so that the display screen can be clearly seen by a driver wearing the polarized sunglasses at any angle.

In this embodiment, the absorption axis of the first polarizer 1 and the absorption axis of the second polarizer 3 of the polarized sunglasses form an included angle of 90 °. When the liquid crystal box 2 is in a closed state, the transmittance of the polarized sunglasses is less than 10%, and the polarized sunglasses have lower transmittance (deeper) as common polarized sunglasses, so that strong light can be prevented to protect the sunglasses. When the light is weakened, the photosensitive module for sensing the ambient light and the microprocessor for adjusting the dark state of the liquid crystal lens act to open the liquid crystal box 2, and the transmittance of the polarized sunglasses becomes high (i.e. becomes shallow) along with the rotation of the liquid crystal, namely can be increased from 8% to 42%. The method is directly suitable for different light environments and does not need frequent operation.

In this embodiment, the photosensitive module is preferably a photosensor, and may output voltage signals of different magnitudes according to the photosensitive quantity to adjust the voltage. At this time, the liquid crystal in the liquid crystal box 2 deflects at different angles, so that the light passing through the liquid crystal box 2 is twisted at different angles, and the proportion of the light reflected or transmitted by the second polarizer 3 is adjusted. When the intensity of the light incident to the display screen is higher, the voltage on the light valve is adjusted to be increased so as to reduce the reflected light and achieve the anti-dazzle effect.

It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims

1. A polaroid structure for solar glasses is composed of a protective film, a first polarizer protective layer, a polarizer sub-layer, a second polarizer protective layer, a pressure-sensitive adhesive layer and a release film which are sequentially laminated and bonded, and is characterized in that the first polarizer protective layer is an elliptical polarization conversion layer which is a quarter-wave plate layer or a super-complex refractive polyester film optical film layer.

2. A polarizer structure for solar glasses according to claim 1, wherein the quarter-wave plate layer or the super-refractive polyester film optical film layer is coated with a scratch-resistant hardening film on the surface.

3. The polarizer structure of claim 1, wherein the sub-layer of polarizer has a transmittance of 40 to 60%, a polarization degree of 75 to 98%, and a hue as of-1 to 1 NBS, and bs of-1 to 1 NBS.

4. A polarizer structure for solar glasses according to claim 1, wherein the second polarizer sub-protective layer is a cellulose triacetate film, a cyclic olefin polymer film, a polymethyl methacrylate film or a polyethylene terephthalate film.

5. Polarized sunglasses, comprising: the liquid crystal display panel comprises a first polaroid, a liquid crystal box and a second polaroid, wherein the first polaroid and the second polaroid are respectively arranged on two sides of the liquid crystal box; the polarizer structure for the sunglasses is characterized in that the first polarizer is the polarizer structure for the sunglasses according to any one of claims 1 to 4, and the first polarizer and the liquid crystal box are bonded through the pressure-sensitive adhesive layer.

6. A polarized sunglass according to claim 5, wherein the absorption axis of the first polarizer is at a 90 ° angle to the absorption axis of the second polarizer.

7. A polarized sunglasses according to claim 5, wherein the liquid crystal cell has a light sensing module for sensing ambient light and a microprocessor for adjusting the brightness state of the liquid crystal lens.