IP Library Granted Patent US 11,237,390
Granted Patent B2
US 11,237,390 · App. 16/334,500 · Granted Feb 1, 2022

Display system

Inventors: Go Watanabe (Tokyo, JP); Fujio Okumura (Kanagawa, JP)
Assignee: NEC CORPORATION
G02B27/0101B60K35/00G02B27/4205B60K2370/1529B60K2370/23
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Quick Facts
Patent No.
US 11,237,390
App. No.
16/334,500
Granted
Feb 1, 2022
Kind
B2
Abstract

This display system includes: a projection device including a phase-modulation-type spatial light modulator element, a light source radiating light to a display part of the element, and a control circuit controlling the element and the light source; and projecting reflection light of the part of the element; and a reflecting mirror reflecting projection light of the device. The control circuit displays, on the part of the element, a first pattern and a second pattern associated with display information having different definition degrees. The reflecting mirror includes a first reflection region causing reflection light of a portion where the first pattern is displayed to enter, and reflecting the light toward a first display region, and a second reflection region causing reflection light of a portion where the second pattern is displayed to enter, and reflecting the light toward a second display region.

Claims (29)

1. A display system comprising:

a projector configured to include a phase-modulation-type spatial light modulator element, a light source configured to radiate light to a display part of the spatial light modulator element, and a controller configured to control the spatial light modulator element and the light source, the projector being configured to project reflection light of a display part of the spatial light modulator element; and

a reflecting mirror configured to reflect projection light of the projector, wherein

the controller is configured to display, on a display part of the spatial light modulator element, a first pattern and a second pattern associated with pieces of display information having different definition degrees, and

the reflecting mirror includes

a first reflection region which causes reflection light of a portion where the first pattern is displayed to enter, and then reflects the reflection light toward a first display region, and

a second reflection region which causes reflection light of a portion where the second pattern is displayed to enter, and then reflects the reflection light toward a second display region.

2. The display system according to claim 1 , wherein

the second pattern is associated with display information having a higher definition degree than that of the first pattern, and

the second display region is set in a region being visually recognized more easily than the first display region.

3. The display system according to claim 2 , wherein

the first display region is set in a region larger than the second display region, and

magnification of light reflected by the second reflection region is set in such a way as to be smaller than magnification of light reflected by the first reflection region.

4. The display system according to claim 1 , wherein

the reflecting mirror is configured by combining a first reflecting mirror including the first reflection region and a second reflecting mirror including the second reflection region.

5. The display system according to claim 1 , wherein

a light absorption member is disposed on an optical path of 0-th light included in reflection light of the spatial light modulator element.

6. The display system according to claim 1 , further comprising

at least one diffraction optical element configured to be disposed at a position where light reflected by the reflecting mirror enters, and emitting a diffraction pattern dependent on an entrance position of light, wherein

the controller sets an entrance position of light into the diffraction optical element, by a position of spotlight displayed on a display part of the spatial light modulator element.

7. The display system according to claim 6 , further comprising

a plurality of the diffraction optical elements associated with at least one of the first reflection region and the second reflection region.

8. The display system according to claim 1 , displaying display information on a windshield of a vehicle, and further comprising

an imager configured to image an outside of the vehicle, wherein

the controller analyzes image data imaged by the imager, and then detects a detection target included in the image data.

9. The display system according to claim 8 , wherein

the controller has association information associating a position on the windshield seen from a viewpoint of a driver who drives the vehicle, with a position on the image data imaged by the imager, and

when the detection target is detected, the controller specifies, based on the association information, a position on the windshield associated with a position of the detection target on the image data, and sets a pattern to be displayed on a display part of the spatial light modulator element in such a way that desired display information is displayed at the specified position of the detection target on the windshield.

10. A vehicle comprising the display system according to claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 19, 2019
From: WATANABE, GO; OKUMURA, FUJIO
To: NEC CORPORATION
Reel/Frame 048639/0031 →
Priority Claims (1)
JP JP2016-184074 · Sep 21, 2016 · national
Continuity (1)
Related Publication 20210341736A1 · Nov 4, 2021
Cited By (1)
US 12,728,875