IMAGE DISPLAY APPARATUS AND VEHICLE
First Claim
1. An image display apparatus comprisingan image forming unit comprising:
- a light source unit to emit light;
an optical scanner to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction; and
an intermediate image forming unit to form an intermediate image by the light scanned by the optical scanner,whereinthe image forming unit satisfies
0.3<
Rm/L<
3,whereRm denotes a radius of curvature of the intermediate image forming unit in the main scanning direction, andL denotes distance between a reference point when the optical scanner deflects and scans the light and a center of the intermediate image formed on the intermediate image forming unit.
1 Assignment
0 Petitions
Accused Products
Abstract
An image display apparatus includes an image forming unit and a vehicle provided with the image display apparatus. The image forming unit includes a light source unit configured to emit light, an optical scanner configured to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction, and an intermediate image forming unit configured to form an intermediate image by the light scanned by the optical scanner. The image forming unit satisfies 0.3<Rm/L<3, where Rm denotes a radius of curvature of the intermediate image forming unit in the main scanning direction, and L denotes distance between a reference point when the optical scanner deflects and scans the light and a center of the intermediate image formed on the intermediate image forming unit. In the vehicle, the image display apparatus indicates the intermediate image to a driver as a virtual image.
9 Citations
17 Claims
-
1. An image display apparatus comprising
an image forming unit comprising: -
a light source unit to emit light; an optical scanner to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction; and an intermediate image forming unit to form an intermediate image by the light scanned by the optical scanner, wherein the image forming unit satisfies
0.3<
Rm/L<
3,where Rm denotes a radius of curvature of the intermediate image forming unit in the main scanning direction, and L denotes distance between a reference point when the optical scanner deflects and scans the light and a center of the intermediate image formed on the intermediate image forming unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A vehicle comprising
an image display apparatus comprising an image forming unit comprising: -
a light source unit to emit light; an optical scanner to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction; and an intermediate image forming unit to form an intermediate image by the light scanned by the optical scanner, wherein the image forming unit satisfies
0.3<
Rm/L<
3,where Rm denotes a radius of curvature of the intermediate image forming unit in the main scanning direction, and L denotes distance between a reference point when the optical scanner deflects and scans the light and a center of the intermediate image formed on the intermediate image forming unit, and wherein the image display apparatus indicates the intermediate image to a driver as a virtual image.
-
Specification
-
- Resources
-
Current AssigneeRicoh Company Limited
-
Original AssigneeHiromichi Atsuumi, Naoki Nakamura, Yuki Hayashi
-
InventorsICHII, Daisuke, HAYASHI, Yuki, NAKAMURA, Naoki, ATSUUMI, Hiromichi
-
Granted Patent
-
Time in Patent OfficeDays
-
Field of Search
-
US Class Current
-
CPC Class CodesB60K 2360/31 Virtual imagesB60K 2360/334 Projection meansB60K 35/00 Instruments specially adapt...G02B 2027/0141 characterised by the inform...G02B 26/105 with one or more pivoting m...G02B 27/0101 characterised by optical fe...G02B 27/0149 characterised by mechanical...G02B 27/106 for splitting or combining ...G02B 27/283 used for beam splitting or ...G06T 3/08 Projecting images onto non-...G09G 2380/10 Automotive applicationsG09G 2380/12 Avionics applicationsG09G 3/002 to project the image of a t...G09G 3/025 with scanning or deflecting...
