Sighting mark polaroid and eye position detection equipment based on polaroid

Abstract

The invention relates to the technical field of stephosis detection, and discloses a sighting mark polaroid and a polaroid-based eye position detection device.The sighting mark polaroid comprises a polarization combination sheet, a sighting mark layer is printed on the polarization combination sheet, the polarization combination sheet is composed of an X-axis polaroid with an X-axis polarization angle and a Y-axis polaroid with a Y-axis polarization angle, and the X-axis polaroid and the Y-axis polaroid are arranged in parallel. The X-axis polaroid and the Y-axis polaroid are mutually spliced on the same optical plane, the polarization combination piece formed by combining the X-axis polaroid and the Y-axis polaroid can be suitable for the left eye and the right eye at the same time, stephosis detection of the left eye and the right eye can be completed without replacing the polaroids, and the detection accuracy is improved. And the sighting mark layer is directly printed on the polarization combination sheet, so that a screen for displaying a cursor is omitted, the production cost is reduced, and compared with the scheme that the sighting mark is directly displayed by a display screen, the printed sighting mark layer does not need to be refreshed all the time in use, the display is softer, the eyes are not wasted, and repeated detection by a user is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of heterophoria detection, in particular to a sight mark polaroid and an eye position detection device based on the polaroid. Background Art

[0002] Heteroporia is a potential deviation of the eye position that can be controlled by binocular fusion. While patients with heterophoria can maintain binocular alignment and single vision under the control of their corrective fusional reflex, when the fusional reflex is eliminated, the eyes become dislocated and their line of sight cannot remain parallel.

[0003] Heterophoria mainly includes esotropia, exotropia, and hyperphoria. For patients with heterophoria, common symptoms include visual fatigue, such as headaches, periorbital pain, or retrobulbar pain after reading for a while. Severe cases may be accompanied by neurological reflex symptoms such as nausea and vomiting. However, if one eye is covered and only one is read, the above symptoms can often disappear completely. Patients with heterophoria may also experience intermittent strabismus and diplopia after prolonged use of their eyes.

[0004] Currently, latent strabismus detection devices basically use LCD screens to display the cursor, which has a high production cost and is only suitable for use in eyewear stores or medical institutions, making it difficult to popularize in daily life. Therefore, it does not meet existing needs. In this regard, we propose a sight mark polarizer and an eye position detection device based on the polarizer. Summary of the Invention

[0005] The present invention provides a sight mark polarizing plate and an eye position detection device based on the polarizing plate, which have the advantages of simple structure, high clarity, portability, and applicability in various daily environments, and solve the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a sight mark polarizer, comprising a polarization combination sheet, characterized in that: a sight mark layer is printed on the polarization combination sheet, the polarization combination sheet is composed of an X-axis polarizer with an X-axis polarization angle and a Y-axis polarizer with a Y-axis polarization angle, the X-axis polarizer and the Y-axis polarizer are spliced ​​together on the same optical plane, a splicing area is provided at the intersection between the X-axis polarizer and the Y-axis polarizer, at least one of the X-axis polarizer or the Y-axis polarizer in the splicing area is in a disconnected state, and the disconnected X-axis polarizer or the Y-axis polarizer is spliced ​​and combined with the corresponding X-axis polarizer or the Y-axis polarizer at the disconnected state;

[0007] In the present invention, a polarizing combination sheet formed by combining an X-axis polarizing sheet and a Y-axis polarizing sheet can be applied to both the left and right eyes, and heterophoria detection of the left and right eyes can be completed without replacing the polarizing sheets. Furthermore, by directly printing the sight mark layer on the polarizing combination sheet, a screen for displaying a cursor is omitted, thereby reducing production costs. Moreover, compared with a solution in which the sight mark is directly displayed on a display screen, the printed sight mark layer does not need to be constantly refreshed during use, resulting in a softer display, less strain on the eyes, and more conducive to repeated detection by the user.

[0008] As an optional solution of the style of the present invention, the sight mark layer includes an X mark and a Y mark, and the X mark and the Y mark are perpendicular to each other.

[0009] As an optional solution of the style of the present invention, wherein: at the near-zero point where the X mark and the Y mark intersect, the X-axis polarizer and the Y-axis polarizer are in close contact and spliced ​​together.

[0010] As an optional solution of the style described in the present invention, one side of the polarization combination plate is provided with a supporting plate for fixing the X-axis polarizer and the Y-axis polarizer, and the X-axis polarizer and the Y-axis polarizer are attached to the supporting plate.

[0011] As an optional solution of the style described in the present invention, the supporting plate and the polarizing combination plate are in an integrated structure.

[0012] As an optional solution of the style of the present invention, a light-transmitting sheet is provided on the other side of the polarizing combination sheet.

[0013] As an optional solution of the style described in the present invention, the supporting sheet, the polarizing combination sheet, and the light-transmitting sheet are an integrated structure, and the supporting sheet, the polarizing combination sheet, and the light-transmitting sheet are distributed in sequence.

[0014] As an optional style solution described in the present invention, the polarizing plate is provided with a wavelength retardation film, which converts the light waves passing through the polarizing plate from linearly polarized light to circularly polarized light. The circularly polarized light converted by the wavelength retardation film is spirally opposite along the X-axis polarization angle of the X-axis polarization plate and the Y-axis polarization angle of the Y-axis polarization plate.

[0015] As an optional solution of the style of the present invention, wherein: the sight mark polarizer and the instrument box body for placing the sight mark polarizer, one end of the instrument box body is provided with an open visual end for observing the polarizer.

[0016] As an optional solution of the style of the present invention, wherein: the polarizing combination plate is placed in the instrument box body, and the instrument box body is provided with a backlight device for illuminating the open visible end.

[0017] The present invention has the following beneficial effects:

[0018] 1. In this sight mark polarizing plate and eye position detection equipment based on polarizing plates, the polarizing combination plate composed of the X-axis polarizing plate and the Y-axis polarizing plate can be applied to both the left and right eyes. The detection of heterophoria of the left and right eyes can be completed without replacing the polarizing plates. Moreover, the X-axis polarizing plate and the Y-axis polarizing plate are directly spliced ​​on the same optical plane, which can reduce the consumption of raw materials and thus reduce production costs.

[0019] 2. In this type of sight mark polarizing plate and eye position detection equipment based on the polarizing plate, the sight mark layer is directly printed on the polarizing combination plate to eliminate the screen for displaying the cursor, thereby reducing production costs. In addition, compared with the solution of directly displaying the sight mark on the display screen, the printed sight mark layer does not need to be refreshed all the time during use, and the display is softer and less tiring to the eyes, which is more conducive to repeated detection by users.

[0020] 3. In this sight mark polarizing plate and eye position detection device based on the polarizing plate, the polarizing plate combination is assembled through the instrument box to protect it and facilitate its use. When in use, the backlight device in the instrument box can be turned on as needed to illuminate the polarizing plate combination in the open visual end, thereby reducing the environmental requirements of the polarizing plate combination when in use.

[0021] 4. In this type of sight mark polarizing plate and eye position detection equipment based on the polarizing plate, the wavelength delay film is used to change the vibration direction of the light wave from linear to spiral rotation, so that even if the head of the tester turns slightly, observation and detection can still be carried out, thereby reducing the difficulty of detection and facilitating its popular use in daily life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the front structure of the polarizing combination plate of the present invention;

[0023] Figure 2 It is a front structural schematic diagram of the support plate of the present invention;

[0024] Figure 3 is a schematic cross-sectional structural diagram of a support sheet of the present invention;

[0025] Figure 4 Schematic diagram of the front structure of the light-transmitting sheet of the present invention;

[0026] Figure 5 Schematic diagram of the cross-sectional structure of the light-transmitting sheet of the present invention;

[0027] Figure 6 Schematic diagram of the cross-sectional structure of the polarizing combination sheet of the present invention;

[0028] Figure 7is a schematic cross-sectional view of the wavelength retardation film of the present invention;

[0029] Figure 8 Schematic diagram of the directional polarization conversion process of light waves of the present invention;

[0030] Figure 9 It is a schematic diagram of the top view of the instrument box body of the present invention;

[0031] Figure 10 It is a schematic diagram of the three-dimensional structure of the instrument box body of the present invention;

[0032] Figure 11 FIG. 4 is a front structural diagram of another shape of the polarizing combination plate of the present invention.

[0033] In the figure: 1. Polarizing plate assembly; 10. X-axis polarizing plate; 11. Y-axis polarizing plate; 2. Sight mark layer; 20. X mark; 21. Y mark; 3. Support plate; 4. Transparent plate; 5. Wavelength retardation film; 6. Instrument box; 60. Open viewing end; 61. Backlight device. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: This example aims to solve the problem that the existing heterophoria detection device requires a screen display cursor, resulting in high production costs and inconvenience in carrying. Figure 1 、 Figure 2 and Figure 3A sight mark polarizing plate includes a polarizing combination plate 1, which is composed of an X-axis polarizing plate 10 with an X-axis polarization angle and a Y-axis polarizing plate 11 with a Y-axis polarization angle. The X-axis polarizing plate 10 and the Y-axis polarizing plate 11 are spliced ​​together on the same optical plane. By splicing, the X-axis polarizing plate 10 and the Y-axis polarizing plate 11 with different polarization angles are arranged on the same optical plane to form a polarizing combination plate 1 that can be used for both the left eye and the right eye. The polarizing combination plate 1 is printed with a sight mark layer 2. The sight mark Layer 2 includes an X mark 20 and a Y mark 21. The X mark 20 is located in the center of the X-axis polarizer 10, and the Y mark 21 is located in the center of the Y-axis polarizer 11. The X mark 20 and the Y mark 21 in the sight mark layer 2 are printed on the X-axis polarizer 10 and the Y-axis polarizer 11 on the polarization combination sheet 1, respectively, to replace the sight marks displayed on the screen. The X mark 20 and the Y mark 21 are perpendicular to each other. The intersection between the X mark 20 and the Y mark 21 is near the zero point, and the X-axis polarizer 10 and the Y-axis polarizer 11 are in close contact and spliced.

[0036] At least one of the X-axis polarizer 10 and the Y-axis polarizer 11 in the splicing area is in a broken state, and the broken X-axis polarizer 10 or Y-axis polarizer 11 is bonded and spliced ​​with the intact X-axis polarizer 10 or Y-axis polarizer 11 at the broken portion. When the X-axis polarizer 10 and the Y-axis polarizer 11 are spliced, in order to avoid the intersection of polarization zones with two different polarization angles, which leads to a blind spot in the field of view, at least one of the two is divided into multiple parts and spliced ​​on the same optical plane. Moreover, when the X-axis polarizer 10 and the Y-axis polarizer 11 are spliced, the splicing area of ​​the splicing portion close to the zero point position is as small as possible.

[0037] In this embodiment, the X-axis polarizer 10, the Y-axis polarizer 11, and the sight mark layer 2 are centrally processed, thereby simplifying the detection equipment, thereby reducing production costs and improving the portability of the sight mark polarizer and the eye position detection device based on the polarizer, thereby enabling people to perform real-time detection of eye health at any time, which is conducive to popular use in daily life.

[0038] It should be noted that if Figure 11 As shown, the shapes of the X-axis polarizer 10 and the Y-axis polarizer 11 and the structure of the joints can be adjusted and changed according to actual conditions to better perform the joints and facilitate printing of more content.

[0039] Example 2: This example aims to solve the problem of how to extend the service life of the sight mark polarizer and reduce the maintenance cost. This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 A supporting plate 3 is provided on one side of the polarizing combination sheet 1 for facilitating the fixing of the X-axis polarizing sheet 10 and the Y-axis polarizing sheet 11. The X-axis polarizing sheet 10 and the Y-axis polarizing sheet 11 are attached to the supporting plate 3. The X-axis polarizing sheet 10 and the Y-axis polarizing sheet 11 are positioned and assembled by being attached to the supporting plate 3. The supporting plate 3 and the polarizing combination sheet 1 are of an integrated structure. The supporting plate 3 transmits light waves and irradiates the eyes after passing through the polarizing combination sheet 1. The integrated supporting plate 3 and the polarizing combination sheet 1 can prevent the X-axis polarizing sheet 10 and the Y-axis polarizing sheet 11 from loosening during carrying and use.

[0040] A light-transmitting sheet 4 is provided on the other side of the polarizing combination sheet 1. The length and width of the light-transmitting sheet 4 are greater than those of the polarizing combination sheet 1. The light-transmitting sheet 4 covers the other side of the polarizing combination sheet 1. The light-transmitting sheet 4 and the polarizing combination sheet 1 form an integrated structure. During assembly, the light-transmitting sheet 4, which is greater in length and width than the polarizing combination sheet 1 and has a quadrilateral structure, is easier to fix on instruments and equipment.

[0041] The supporting plate 3, the polarizing combination plate 1, and the light-transmitting plate 4 form an integrated structure. The supporting plate 3, the polarizing combination plate 1, and the light-transmitting plate 4 are arranged in sequence. The X-axis polarizing plate 10 and the Y-axis polarizing plate 11 are clamped and fixed by the supporting plate 3 and the light-transmitting plate 4, thereby improving the stability of the polarizing combination plate 1. In addition, the thickened polarizing combination plate 1 is more solid and has the advantage of being less prone to damage.

[0042] In this embodiment, the support sheet 3, the polarizing assembly sheet 1, and the light-transmitting sheet 4 are arranged in sequence. The support sheet 3, the polarizing assembly sheet 1, and the light-transmitting sheet 4 form an integrated structure. By integrating the support sheet 3, the polarizing assembly sheet 1, and the light-transmitting sheet 4, the assembly process is simplified, making it easier to carry and install, and further facilitating the popularization of the detection device in daily life.

[0043] Example 3: This example aims to promote the solution of problems such as reducing the difficulty of detection. This example is an improvement made on the basis of Example 1. For details, please refer to Figure 2 、 Figure 7 and Figure 8 The polarizing plate 1 is provided with a wavelength retardation film 5. The wavelength retardation film 5 converts the light waves passing through the sight target polarizer from linearly polarized light to circularly polarized light. The wavelength retardation film 5 is a quarter-wave plate, which can convert linear polarization into circular polarization. When the wavelength retardation film 5 is attached to the polarizing plate 1, the fast and slow axes correspond to corresponding XY axis regions. At this time, the polarization angles of the XY axes of the sight target polarizer can be the same. The circularly polarized light converted by the wavelength retardation film 5 spirals in opposite directions along the XY axis regions of the sight target polarizer to distinguish the light waves for the left and right eyes.

[0044] In this embodiment, the light wave is converted into linearly polarized light by the polarization combination plate 1 consisting of an X-axis polarizer 10 and a Y-axis polarizer 11. After the linearly polarized light passes through the wavelength retardation film 5, the phase is passed through the 1 / 4 wavelength retardation plate, causing the light wave vibration direction to change from linear polarization to spirally rotated polarization. During testing, wearing the corresponding rotating polarizer allows observation and testing to be carried out even if the tester's head rotates slightly, thereby reducing the difficulty of testing.

[0045] Example 4: This example is intended to solve the problem that when the light in the detection environment is not good, it is difficult to see the visual target layer 2 through the polarization combination sheet 1. This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 9 and Figure 10 A polarizing film-based eye position detection device includes a sight mark polarizing film and an instrument box 6 for placing the sight mark polarizing film. One end of the instrument box 6 is provided with an open visual end 60 for observing the polarizing film. The polarizing combination film 1 is placed in the instrument box 6, and a backlight device 61 is provided in the instrument box 6 for illuminating the open visual end 60.

[0046] In this embodiment, the polarizing combination sheet 1 is assembled in an instrument box 6 to protect it while facilitating its use. During use, the backlight device 61 in the instrument box 6 can be turned on as needed to illuminate the polarizing combination sheet 1 in the open visible end 60, thereby reducing the environmental requirements of the polarizing combination sheet 1 during use.

[0047] It should be noted that a control panel, a voice interaction device, cloud service storage, linked cameras and other detection equipment can also be built into the instrument box 6 to perform data calculation and big data processing, so that the measurement results can be viewed more conveniently and intuitively, and each person's data can be saved separately for use in public places. In addition, the measurement can also be directed to the measurer to further reduce the difficulty of measurement, making it more daily and convenient.

[0048] The working principle of the present invention is as follows: first, when in use, the sight mark polarizing plate and the eye position detection device based on the polarizing plate can simultaneously detect horizontal and vertical eye positions. The visual distance between the tester's eyes and the polarizing plate is 6m or 40cm. The actual distance between the tester's eyes and the polarizing plate can be adjusted by an optical lens, that is, a convex lens.

[0049] Then, during the test, the person to be tested observes the polarizing plate 1 through the analyzer lens. According to the polarization principle, the light waves polarized by the sight mark polarizer can only pass through the corresponding lens of the left / right eye corresponding to the sight plate, thereby achieving left / right eye separation. The analyzer lens is composed of the corresponding X-axis polarizer 10 or Y-axis polarizer 11.

[0050] The splicing area between the X-axis polarizer 10 and the Y-axis polarizer 11 coincides with the X mark 20 and the Y mark 21 of the sight mark layer 2. The X-axis polarizer 10 and the X mark 20 are used together to detect esotropia / exotropia. The positive semi-axis of the X mark 20 represents the collective excess of esotropia, and the negative semi-axis of the X mark 20 represents the collective excess of exotropia. The Y-axis polarizer 11 and the Y mark 21 are used together to detect left / right hypertropia. The positive semi-axis of the Y mark 21 represents left eye hypertropia, and the negative semi-axis of the Y mark 21 represents right eye hypertropia.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A sight mark polarizing plate, comprising a polarizing combination plate (1), characterized in that: The polarizing combination sheet (1) is printed with a sight mark layer (2); The polarization combination plate (1) is composed of an X-axis polarizer (10) with an X-axis polarization angle and a Y-axis polarizer (11) with a Y-axis polarization angle, and the X-axis polarizer (10) and the Y-axis polarizer (11) are spliced ​​together on the same optical plane; A splicing area is provided at the intersection of the X-axis polarizer (10) and the Y-axis polarizer (11), and at least one of the X-axis polarizer (10) and the Y-axis polarizer (11) in the splicing area is in a disconnected state, and the disconnected X-axis polarizer (10) or Y-axis polarizer (11) is spliced ​​and combined with the corresponding X-axis polarizer (10) or Y-axis polarizer (11) at the disconnected state.

2. The sight mark polarizing plate according to claim 1, wherein: The sight mark layer (2) comprises an X mark (20) and a Y mark (21), and the X mark (20) and the Y mark (21) are perpendicular to each other.

3. The sight mark polarizing plate according to claim 2, wherein: At the near-zero point where the X mark (20) and the Y mark (21) intersect, the X-axis polarizer (10) and the Y-axis polarizer (11) are in close contact and spliced ​​connection.

4. The sight mark polarizing plate according to claim 1, wherein: One side of the polarization combination plate (1) is provided with a support plate (3) for facilitating the fixing of an X-axis polarizer (10) and a Y-axis polarizer (11); the X-axis polarizer (10) and the Y-axis polarizer (11) are attached to the support plate (3).

5. The sight mark polarizing plate according to claim 4, characterized in that: The supporting plate (3) and the polarizing combination plate (1) are in an integrated structure.

6. The sight mark polarizing plate according to claim 4, characterized in that: A light-transmitting sheet (4) is provided on the other side of the polarizing combination sheet (1).

7. The sight mark polarizing plate according to claim 6, characterized in that: The supporting sheet (3), the polarizing combination sheet (1), and the light-transmitting sheet (4) form an integrated structure, and the supporting sheet (3), the polarizing combination sheet (1), and the light-transmitting sheet (4) are distributed in sequence.

8. The sight mark polarizer according to any one of claims 1 to 7, characterized in that: The polarization combination plate (1) is provided with a wavelength retardation film (5), and the wavelength retardation film (5) converts the light waves passing through the polarization combination plate (1) from linearly polarized light to circularly polarized light. The circularly polarized light converted by the wavelength retardation film (5) is spirally opposite along the X-axis polarization plate (10) at the X-axis polarization angle and the Y-axis polarization plate (11) at the Y-axis polarization angle.

9. An eye position detection device based on a polarizing plate, comprising the sight mark polarizing plate as claimed in claim 1, and an instrument box (6) for placing the sight mark polarizing plate, wherein one end of the instrument box (6) is provided with an open visual end (60) for observing the polarizing plate.

10. An eye position detection device based on polarizing plates according to claim 9, wherein the polarizing plate combination (1) is placed in the instrument box (6), and a backlight device (61) for illuminating the open visible end (60) is provided in the instrument box (6).

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