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US 11,028,994 B2Granted
Illumination module, illumination device, vehicle and driving method of illumination device
AssigneeAu Optronics Corporation
InventorCheng-Te Lin
Life of this patent
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Abstract
An illumination module including a light emitting unit and a first liquid crystal lens is provided. The light emitting unit emits illumination light. The first liquid crystal lens is arranged corresponding to the light emitting unit and receives the illumination light. The first liquid crystal lens is configured to converge, diverge or deflect the illumination light. An illumination device, a vehicle, and a driving method for the illumination device are also provided.
Claims19
An illumination module, comprising:
- a light emitting unit emitting an illumination light;
- and
- a first liquid crystal lens arranged corresponding to the light emitting unit, wherein the first liquid crystal lens receives the illumination light and is configured to converge, diverge or deflect the illumination light;
- and
- a second liquid crystal lens disposed between the light emitting unit and the first liquid crystal lens, wherein the second liquid crystal lens receives the illumination light from the light emitting unit, and the first liquid crystal lens receives the illumination light from the second liquid crystal lens,
- wherein the second liquid crystal lens is configured to modulate a distribution of the illumination light received by the first liquid crystal lens, and
- wherein a distance d between the first liquid crystal lens and the second liquid crystal
- :
-
- 0
- ≤
- d
- ≤
- f
- 1
- -
- v
- -
- (
- l
- ′
- tan
-
-
- β
- )
- ,
- lens satisfies the following relationship wherein f1 is a focal length of the first liquid crystal lens, is the image distance of the second liquid crystal lens, l′ is half of the imaging length of the second liquid crystal lens, and β is half of the angle of the beam of the illumination light.
25 more elements
Dependencies are inferred from the claim text.