CN210954390U

CN210954390U - Peep-proof film

Info

Publication number: CN210954390U
Application number: CN201922392554.1U
Authority: CN
Inventors: 金玄; 李化玺; 尹文龙; 尹强强
Original assignee: Sichuan Xinfurui Technology Development Co ltd
Current assignee: Sichuan Xinfurui Technology Development Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-07
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a peep-proof membrane, include: a plurality of transmission regions arranged at equal intervals; peep-proof area, it sets up with transmission district is alternative, peep-proof area specifically sets up to: a plurality of long cylinders are arranged in the peeping-proof area, the long cylinders are overlapped to form the peeping-proof area, and two end parts of each long cylinder face to the transmission area; each long cylinder comprises an inner core and a cladding wrapping the inner core, the refractive index of the inner core is larger than that of the cladding, and when light obliquely enters the inner core, the light can be totally reflected in the inner core. The peep-proof film can increase the utilization rate of light and improve the light transmittance of the peep-proof film.

Description

Peep-proof film

Technical Field

The utility model relates to an optical display technical field. More specifically, the utility model relates to a peep-proof membrane.

Background

With the popularization of electronic products such as mobile phones and computers, the protection of display contents is becoming more and more important. If the mails are checked in buses and subways, the display contents need to be effectively protected, and people around the display contents are prevented from peeping. At present, the content is protected by a peep-proof film. In the prior art, the peep-proof film adopts a unique global optical patent technology of a super-fine shutter, so that data displayed on a screen is specially used for a user to read in front, and any person can intelligently see a dark picture at two sides. However, the existing peep-proof film generally has the defects of large thickness and low brightness, so that the user experience is seriously reduced.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

The utility model also aims at providing a peep-proof membrane, this peep-proof membrane can increase the utilization ratio of setting a camera, improves the luminousness of peep-proof membrane.

To achieve these objects and other advantages in accordance with the purpose of the invention, a privacy film is provided, comprising:

a plurality of transmission regions arranged at equal intervals;

peep-proof area, it sets up with transmission district is alternative, peep-proof area specifically sets up to: a plurality of long cylinders are arranged in the peeping-proof area, the long cylinders are overlapped to form the peeping-proof area, and two end parts of each long cylinder face to the transmission area;

each long cylinder comprises an inner core and a cladding wrapping the inner core, the refractive index of the inner core is larger than that of the cladding, and when light obliquely enters the inner core, the light can be totally reflected in the inner core.

Preferably, in the peep-proof film, in the peep-proof area, the long cylinders are gradually overlapped upwards from the bottommost part of the peep-proof area along the thickness direction, and the refractive index ratio of the inner core and the cladding of each long cylinder is gradually increased from the bottommost part along the thickness direction.

Preferably, the long cylinder of the peep-proof membrane is made of glass fiber.

Preferably, in the privacy film, the width of the privacy zone ranges from 30 micrometers to 50 micrometers, and the width of the transmission zone ranges from 50 micrometers to 70 micrometers.

Preferably, in the peep-proof film, the height of the peep-proof area ranges from 100 micrometers to 300 micrometers.

Preferably, the diameter of the inner core of each long cylinder of the peep-proof membrane is 7-8 microns, and the outer diameter of the cladding is 10-12 microns.

Preferably, the privacy film further comprises an upper substrate and a lower substrate, and the transmissive regions and the privacy regions are alternately disposed between the upper substrate and the lower substrate.

The utility model discloses at least, include following beneficial effect: the peeping-proof area comprises a plurality of long cylinders which are overlapped to form the peeping-proof area, and two ends of each long cylinder face to the transmission area; each long cylinder comprises an inner core and a cladding wrapping the inner core, the refractive index of the inner core is larger than that of the cladding, when light obliquely enters the inner core, the light can be totally reflected in the inner core, namely, the light obliquely enters the peeping-proof area and is totally reflected in the inner core, the peeping-proof purpose can be achieved, when the light exits from the inner core of the long cylinder, a part of the light can enter the display part again, a part of the light can also obliquely enter the peeping-proof area, and the light re-entering the display part can improve the utilization rate of the light energy.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a peep-proof membrane in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a peep-proof membrane in an embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a peep-proof membrane, including: a plurality of transmission regions 1 arranged at equal intervals; peep-proof area 2, it sets up with the transmission district is alternative, peep-proof area's specific setting is: the peeping-proof area is provided with a plurality of long cylinders 3, the long cylinders are overlapped to form the peeping-proof area, the long cylinders can be bonded together during specific manufacturing, and two end parts of each long cylinder face to the transmission area; each long cylinder comprises an inner core and a cladding wrapping the inner core, the refractive index of the inner core is larger than that of the cladding, and when light obliquely enters the inner core, the light can be totally reflected in the inner core.

The light obliquely incident to the peeping-proof area is totally reflected in the inner core, the peeping-proof purpose can be achieved, when the light is emitted out of the inner core of the long cylinder, a part of the light can be incident into the display part again, a part of the light can be obliquely incident to the peeping-proof area, and the utilization rate of the light energy can be improved due to the light incident into the display part again.

In one embodiment, in the peep-proof film, in the peep-proof area, the long cylinders are gradually overlapped upwards from the bottommost part of the peep-proof area along the thickness direction, and the refractive index ratio of the inner core and the cladding of each long cylinder is gradually increased from the bottommost part along the thickness direction. Since the light obliquely incident on the inner core has a smaller and smaller incident angle when it extends in the thickness direction from the bottom, the refractive index ratio of the inner core to the cladding must be made larger and larger in order to ensure that the light obliquely incident on the inner core can be totally reflected in the inner core.

In one embodiment, the long cylinder is made of glass fiber. The long cylinder made of glass fiber has high elastic coefficient and high light transmittance. The display part covered by the peep-proof area is not low in brightness due to the shielding of the peep-proof area, so that the light transmission of the peep-proof film is particularly high.

In one specific embodiment, the width of the peep-proof region of the peep-proof film is 30 to 50 micrometers, and the width of the transmission region is 50 to 70 micrometers.

In one embodiment, the height of the peep-proof area of the peep-proof membrane ranges from 100 micrometers to 300 micrometers.

In one specific embodiment, the diameter of the inner core of each long cylinder of the peep-proof membrane is 7-8 microns, and the outer diameter of the cladding is 10-12 microns.

In one embodiment, the privacy film further comprises an upper substrate 4 and a lower substrate 5, and the transmissive regions and the privacy regions are alternately disposed between the upper substrate and the lower substrate. The upper base material and the lower base material are required to have scratch resistance. The material can be polymethyl methacrylate, and can also be other optical plastics.

As described above, according to the utility model discloses, this peep-proof membrane can increase the utilization ratio of setting a light, improves the luminousness of peep-proof membrane.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. A privacy film, comprising:

a plurality of transmission regions arranged at equal intervals;

2. The privacy film of claim 1, wherein in the privacy zone, the long cylindrical bodies are gradually stacked upward in the thickness direction from the lowermost portion of the privacy zone, and the refractive index ratio of the core to the cladding of the long cylindrical bodies gradually increases in the thickness direction from the lowermost portion.

3. The privacy film of claim 2, wherein the elongated cylinders are made of fiberglass.

4. The privacy film of claim 3, wherein the privacy zone has a width in the range of 30 to 50 microns and the transmissive zone has a width in the range of 50 to 70 microns.

5. The privacy film of claim 4, wherein the privacy zone has a height in the range of 100 microns to 300 microns.

6. The privacy film of claim 5, wherein the inner core of each elongated cylinder has a diameter of 7-8 microns and the outer diameter of the cladding is 10-12 microns.

7. The privacy film of claim 1, further comprising an upper substrate and a lower substrate, wherein the transmissive regions and the privacy regions are alternately disposed between the upper substrate and the lower substrate.