11 results about "Polarizing sunglasses" patented technology

The application discloses a mobile phone screen display image enhancement method and system, and relates to the technical field of mobile phone screen control.The method comprises the following steps: acquiring a user face video stream and mobile phone space motion data; identifying head posture information according to the user face video stream; identifying mobile phone posture information by using an extended Kalman filter according to the mobile phone space motion data; calculating a polarization axis included angle between a polarization axis of polarized sunglasses and a polarization axis of a mobile phone screen according to the head posture information and the mobile phone posture information; determining mobile phone screen adjustment parameters according to the polarization axis included angle; and performing compensation processing on the mobile phone screen according to the mobile phone screen adjustment parameters, wherein the compensation processing comprises brightness compensation and color compensation.The application can determine mobile phone screen adjustment parameters in combination with head posture information and mobile phone posture information, and perform brightness compensation and color compensation, so as to realize display image enhancement, and improve accuracy and user experience.

This invention provides a head-up display device that allows users wearing polarized sunglasses to see the display light while also offering efficient use of the display light. [Solution] The head-up display device comprises a liquid crystal display element 7 having a first polarizer 21 and a second polarizer 22 facing each other with a liquid crystal cell 10 in between, a half-wave plate 40 through which display light Lp emitted from the liquid crystal display element 7 in response to illumination light C passes, and a rotation drive unit 8 that rotates the half-wave plate 40. The rotation drive unit 8 can switch the half-wave plate 40 between a first rotation position and a second rotation position. From the half-wave plate 40 in the first rotation position, S-polarized display light L is emitted toward the reflective surface of the windshield, and from the half-wave plate 40 in the second rotation position, P-polarized display light L is emitted toward the reflective surface.

The present invention provides a polarizing film and a method for producing the polarizing film capable of suppressing decoloration and thermal shrinkage. A polarizing film according to an embodiment of the present invention is a polarizing film of 10 [mu] m or less containing a polyvinyl alcohol resin, and contains at least a first dye that is an azo compound having a ureido skeleton represented by formula (1) or a salt thereof.

The invention is suitable for the technical field of polarized sunglasses production, and particularly relates to a hot bending forming process compensation method for polarized sunglasses lens manufacturing, and the method comprises the following steps: obtaining lens shape information for reflecting the shape of a polarized sunglasses lens after hot bending forming and hot bending parameter information in real time; determining a reference adjustment shape group based on the lens shape information acquired each time and a reference hot bending shape; wherein the reference adjustment shape group is used for reflecting a data set which is different from the reference hot bending shape in the lens shape information; based on the reference adjustment shape set and the hot bending parameter information, an adjustment hot bending parameter is determined. According to the hot bending forming process compensation for manufacturing the polarized sunglass lens, the adaptation degree between hot bending process parameters and the actual production process in the production process can be improved, and therefore the qualified rate of products is increased.

The present application aims to provide eyewear such as polarized sunglasses using an optical film having a light reflection layer and a polarizing element layer, eyewear having a metallic color tone that meets the signal recognition standards of various countries, and an optical film and an optical laminate for the eyewear. The present application provides an optical film in which a light reflection layer and a polarizing element layer are laminated, which satisfies any one or more of the following (a) to (d). (a) The center reflection wavelength of the light reflection layer is 600 nm or more and less than 660 nm, and the transmission color phase of the optical film is in a region where -15 ≤ a* ≤ 10 and -20 ≤ b* ≤ 20. (b) The center reflection wavelength of the light reflection layer is 500 nm or more and less than 600 nm, and the transmission color phase of the optical film is in a region where -5 ≤ a* ≤ 20 and -20 ≤ b* ≤ 30. (c) The center reflection wavelength of the light reflection layer is 660 nm or more and less than 750 nm, and the transmission color phase of the optical film is in a region where -10 ≤ a* ≤ 10 and -5 ≤ b* ≤ 35. (d) The center reflection wavelength of the light reflection layer is 400 nm or more and less than 500 nm, and the minimum light transmittance of the light reflection layer of 400 nm or more and less than 500 nm is 15% or more, and the transmission color phase of the optical film is in a region where -15 ≤ a* ≤ 25 and -10 ≤ b* ≤ 40.

A display device for a vehicle includes: a display, a polarization switching unit, a reflector, and a controller. The polarization switching unit includes a wave plate that can cause emission light of the display to be emitted while changing a polarization direction thereof, and a drive device that can rotate the wave plate between a position of not using polarizing sunglasses and a position of using polarizing sunglasses. The controller rotates the wave plate within a prescribed range, detects luminance values for each fixed rotation angle of the wave plate within a prescribed range from imaging information of an imaging device that transmits a principal component of transmitted light of the wave plate at a position of the eye box, and sets, as a correction angle, a rotation angle of the wave plate corresponding to a maximum luminance value among the luminance values.

The invention provides a vehicle-mounted display screen image enhancement method and system, and relates to the technical field of vehicle-mounted display, and the method comprises the steps: obtaining the illumination information of the surface of a display screen, dividing the illumination information into a plurality of illumination sub-regions, obtaining the real-time speed, the driving direction and the environment information of a vehicle, predicting the illumination change trend of each illumination sub-region, and carrying out the image enhancement of the vehicle-mounted display screen. Whether a driver wears polarized sunglasses is judged through mode recognition, the influence of the driver on a display screen image is pre-judged according to an optical model, and corresponding image enhancement parameters are selected and applied for all the illumination sub-areas according to the illumination information of the illumination sub-areas, the illumination change trend and the influence of the polarized sunglasses; according to the vehicle-mounted display screen, refined and personalized image enhancement is realized, so that the image visibility, the contrast ratio and the color accuracy of the vehicle-mounted display screen in various complex light environments are remarkably improved, and the problems that key information cannot be seen clearly due to glare, overexposure or shadow in the background technology, and color distortion and information black holes are caused under a polariscope are effectively solved.

This invention provides a head-up display device that allows users wearing polarized sunglasses to see the display light while also offering efficient use of the display light. [Solution] The head-up display device comprises a liquid crystal display element 7 having a first polarizer 21 and a second polarizer 22 facing each other with a liquid crystal cell 10 in between, which emits display light L upon receiving illumination light C, and a rotation drive unit 8 that rotates the first polarizer 21. The rotation drive unit 8 can switch the first polarizer 21 between a first rotation position and a second rotation position. From the first polarizer 21 in the first rotation position, S-polarized display light L is emitted toward the reflective surface of the windshield, and from the first polarizer 21 in the second rotation position, P-polarized display light L is emitted toward the said reflective surface. When the first polarizer 21 is in the second rotation position compared with when it is in the first rotation position, the liquid crystal display element 7 inverts the color tone of the image represented by the display light L.

To provide a display device that enables even a user wearing polarized sunglasses to satisfactorily view content required to be displayed by law.SOLUTION: The display apparatus 100 emits display light L toward a ceramic formation part 3a provided in a lower end region of the windshield 3. The display device 100 includes a liquid crystal panel 10 and a phase difference part 30 provided to cover a part of a display region of the liquid crystal panel 10. The phase difference part 30 is provided so as to cover a specific region of the display region, the specific region displaying content required to be displayed by law. In the display light L, when light traveling from the display area toward the ceramic formation part 3a without passing through the retardation part 30 is defined as first light L1 and light traveling from the specific area toward the ceramic formation part 3a through the retardation part 30 is defined as second light L2, the second light L2 has a higher ratio of P-polarized light components than the first light L1.SELECTED DRAWING: Figure 1

According to the present invention, it is possible to provide an economically excellent oriented film that can reduce waste and increase productivity when a sheet piece of depolarizing film is cut out from a long-length film, does not cause blackout or rainbow spots even in a case where an image is viewed with polarized sunglasses on, and can be attached later using a general-purpose image display device as digital signage, an image display device using the same, and a method for cutting out an oriented film. In addition, in a further preferred embodiment, there can be provided an oriented film, an image display device, and a method of cutting out an oriented film, each of which causes less trouble at the time of bonding or thereafter.SOLUTION: A rectangular oriented film that is disposed on a viewing side of an image display apparatus and converts linearly polarized light emitted from the image display apparatus into elliptically polarized light, wherein the oriented film has an in-plane retardation of 3000 to 30000nm, and an angle between a long side of the oriented film and a slow or fast axis of the oriented film is more than 5 degrees and less than 30 degrees.SELECTED DRAWING: None

This invention provides a head-up display device that allows users wearing polarized sunglasses to see the display light while also offering efficient use of the display light. [Solution] The head-up display device comprises a liquid crystal display element 7 having a first polarizer 21 and a second polarizer 22 facing each other with a liquid crystal cell 10 in between, and a polarization conversion liquid crystal cell 30 having a liquid crystal layer 33 through which display light Lp emitted from the liquid crystal display element 7, which receives illumination light C, passes. The display light Lp emitted from the liquid crystal display element 7 is directed towards the polarization conversion liquid crystal cell 30 as linearly polarized light along the transmission axis of the first polarizer 21. When the liquid crystal layer 33 is in the first state, S-polarized display light L is emitted from the polarization conversion liquid crystal cell 30 to the reflective surface of the windshield, and when the liquid crystal layer 33 is in the second state, P-polarized display light L is emitted from the polarization conversion liquid crystal cell 30 to the reflective surface.