Display system

Patent metadata

Field	Value
Publication number	US-11237390-B2
Application number	US-201716334500-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	Sep 21, 2016
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

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.

First claim

The invention claimed is:

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 .

Assignees

• Nec Corp

Inventors

• Watanabe Go
• Okumura Fujio

Classifications

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60K35/53

  Movable instruments, e.g. slidable · CPC title

• B60K35/81

  for controlling displays · CPC title

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• B60K35/28

  characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver · CPC title