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31results about How to "Improve visual confirmation" patented technology

Image display mirror for a vehicle

ActiveCN105842901AImprove visual confirmationReduce the influence of reflection imagesMirrorsNon-linear opticsPolarizerVisual perception
The invention provides an image display mirror for a vehicle. The image display mirror includes a half transparent and half reflecting mirror and an image display apparatus, reduces an influence of a reflected image generated by the half transparent and half reflecting mirror, and is excellent in visual conformation of an image displayed on the image display apparatus. The image display mirror for the vehicle is equipped with a first polarizing plate arranged so as to be rotatable in a plane, the half transparent and half reflecting mirror having a reflection axis and configured to reflect polarized light, and the image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half transparent and half reflecting mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half transparent and half reflecting mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half transparent and half reflecting mirror are parallel to each other.
Owner:NITTO DENKO CORP

HUD

ActiveCN109791291BNot easy to projectSide guide for parts that are difficult to projectTelevision system detailsMirrorsLight guideDisplay device
The light guide part (30) of the head-up display device of the present invention is provided with: a first phase element (32), which is arranged on the optical path (OP), and converts the linearly polarized display light from the projection part (10) into circularly polarized light, and has a reflective surface (33) facing the projection component side and arranged to be able to reflect light from the projection component side to the projection component side; the second phase element (37), which is configured on the optical path at a higher position than the first phase element (32) At a position close to the projection component side, a phase difference of 1 / 4 wavelength is given to the display light converted into circularly polarized light by the first phase element (32), thereby being converted into linearly polarized light; and a linear polarizer (47), which is disposed on the optical path at a position closer to the projection component side than the second phase element (37), guides the light whose polarization direction is along the light guide axis, and guides the polarization direction along the direction perpendicular to the light guide axis The light of the light-shielding axis is blocked, and the display light is guided to the projection part side by aligning the light-guiding axis with the polarization direction of the display light converted into linearly polarized light by the second phase element (37).
Owner:DENSO CORP
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