Virtual image display apparatus, head-up display system, and vehicle

Patent metadata

Field	Value
Publication number	US-2016327791-A1
Application number	US-201615214841-A
Country	US
Kind code	A1
Filing date	Jul 20, 2016
Priority date	Mar 27, 2014
Publication date	Nov 10, 2016
Grant date	—

Abstract

The present disclosure provides a virtual image display apparatus, head-up display system, and vehicle that distribute a spatially divided parallax image between a left eye and right eye of a user appropriately. The virtual image display apparatus according to the present disclosure includes a display device configured to spatially divide with a first pitch and to output right-eye images and left-eye images, first optical members periodically disposed with a second pitch, distributing light based on the output from the display device between a right-eye direction and a left-eye direction, and a second optical member configured to reflect or refract, by positive power, the light distributed between the right-eye direction and the left-eye direction by the first optical members. The first pitch is narrower than the second pitch.

First claim

1 . A display device configured to display right-eye pixels that constitute a right-eye image, and left-eye pixels that constitute a left-eye image;
first optical members disposed on an emission surface of the display device, the first optical members distributing light based on output from the display device between a right-eye direction and a left-eye direction; and a second optical member configured to reflect or refract, by positive power, the light distributed between the right-eye direction and the left-eye direction by the first optical members, wherein pixel pairs each formed through pairing of two adjacent pixels including one of the right-eye pixels and one of the left-eye pixels are disposed with a first pitch, and the first optical members are periodically disposed with a second pitch wider than the first pitch.

2 . The virtual image display apparatus according to claim 1 , wherein a relation between the first pitch and the second pitch satisfies [Equation 14]
P 2= P 1+(4* L* tan θ/ N )

where
P 1 is the first pitch,
P 2 is the second pitch,
L is a distance between the first optical members and the display device,
θ is an emission angle of light that reaches a glabella of a user from a pixel of an end of the display device, and
N is a number of total pixels of the display device.

3 . A head-up display system comprising the virtual image display apparatus according to claim 1 .

4 . A vehicle comprising the head-up display system according to claim 3 .

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Kasano Masahiro
• Ichihashi Kouki
• Asai Yosuke
• Hayashi Katsuhiko

Classifications

• G02B30/27

  involving lenticular arrays · CPC title

• G02B27/0101 Primary

  characterised by optical features (G02B27/0172 takes precedence) · CPC title

• H04N5/64

  Constructional details of receivers, e.g. cabinets or dust covers (furniture aspects {of television cabinets} A47B81/06) · CPC title

• G02B27/01

  Head-up displays · CPC title

• B60K35/23

  Head-up displays [HUD] (optical aspects of head-up displays G02B27/01) · CPC title