US 11,738,646 B2
Information display apparatus
Koji Hirata, Kyoto (JP); and Yasuhiko Kunii, Kyoto (JP)
Assigned to MAXELL, LTD., Kyoto (JP)
Filed by MAXELL, LTD., Kyoto (JP)
Filed on Aug. 9, 2022, as Appl. No. 17/883,711.
Application 17/883,711 is a continuation of application No. 16/754,763, granted, now 11,447,011, previously published as PCT/JP2018/037460, filed on Oct. 5, 2018.
Claims priority of application No. 2017-196578 (JP), filed on Oct. 10, 2017.
Prior Publication US 2022/0396150 A1, Dec. 15, 2022
Int. Cl. B60K 35/00 (2006.01); G02B 26/08 (2006.01); G02B 26/10 (2006.01); G02B 27/01 (2006.01)
CPC B60K 35/00 (2013.01) [G02B 26/0833 (2013.01); G02B 26/10 (2013.01); G02B 27/0179 (2013.01); B60K 2370/1529 (2019.05); B60K 2370/31 (2019.05); B60K 2370/347 (2019.05); B60K 2370/785 (2019.05); G02B 2027/0183 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An information display apparatus displaying image information onto a vehicle comprising:
a first information display apparatus and a second information display apparatus arranged between a windshield glass of the vehicle and an instrument panel of the vehicle, wherein
the instrument panel includes a direct-view type image display apparatus,
the first information display apparatus includes a virtual-image optical system displaying a virtual image onto a forward part of the vehicle by allowing a concave mirror to reflect light emitted from an image display apparatus that projects an image light for displaying the image information, and allowing the windshield glass to reflect the light reflected by the concave mirror,
in a vertical direction of the vehicle from an upper side to a lower side, an arrangement position of the first information display apparatus is lower than an arrangement position of the second information display apparatus,
the second information display apparatus includes a practical-image optical system acquiring a practical image by projecting a display image, a rewriting speed of which is changed in accordance with running speed information of the vehicle, and overlapping it on the virtual image created by the first information display apparatus,
the second information display apparatus is arranged at a position not blocking the image light emitted from the first information display apparatus and displays the image information by performing scanning with laser light of a S-polarized light flux to the windshield glass, and
a first display region on the windshield glass, created by the second information display apparatus, has a property that has a reflectance against S-polarized waves different from a reflectance against P-polarized waves.