US 10,094,965 B2Granted

Pattern displaying device

AssigneeTaiwan Green Point Enterprises Co., Ltd.

InventorsRay-Long Tsai, Pei-Shan Hsieh, Tung-Chuan Chen, Cheng-Yen Wang, Shih-Tsung Chang

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Abstract

A pattern displaying device includes a light path changing element, a first light source, a second light source, and a control module. The light path changing element has first inclined surfaces to reflect light and arranged into a first predetermined pattern, and second inclined surfaces to reflect light and arranged into a second predetermined pattern. The first light source is operable to emit light toward the first inclined surfaces to display the first predetermined pattern. The second light source is operable to emit light toward the second inclined surfaces in order to display the second predetermined pattern. The control module is electrically connected to the first and second light sources to control the first and second light source to emit light or not.

Claims15

Dependent claims

A pattern displaying device, comprising:

a light path changing element having a plurality of first inclined surfaces that are configured to reflect light incident from a first direction toward a display direction and that are arranged into a first predetermined pattern, and a plurality of second inclined surfaces that are configured to reflect light incident from a second direction toward the display direction and that are arranged into a second predetermined pattern, the first, second, and display directions being different from one another;
a first light source that is disposed at a first side of said light path changing element and that is operable to emit light toward said first inclined surfaces in the first direction in order to display said first predetermined pattern toward the display direction;
a second light source that is disposed at a second side of said light path changing element and that is operable to emit light toward said second inclined surfaces in the second direction in order to display said second predetermined pattern toward the display direction;
a control module that is electrically connected to said first and second light sources and that is operable to simultaneously control one of said first and second light sources to emit light and the other one of said first and second light sources not to emit light;
and
a light absorbing element that is disposed to surround an outer surrounding surface of said light path changing element.

3 more elements

A pattern displaying device, comprising:

a light path changing element that is configured as a casing defining a receiving space, and that has:
a plurality of first inclined surfaces arranged into a first predetermined pattern, said first inclined surfaces being configured to reflect light incident from a first direction toward a display direction;
a plurality of second inclined surfaces that are arranged into a second predetermined pattern, said second inclined surfaces being configured to reflect light incident from a second direction different from the first direction toward the display direction;
an inner bottom surface that is connected to said first and second inclined surfaces, said first and second inclined surfaces being inclined relative to said inner bottom surface toward the display direction;
and
an inner surrounding surface that is connected to said inner bottom surface to define said receiving space;
and
a first light source that is disposed in said receiving space of said light path changing element and that is operable to emit light toward said first inclined surfaces in the first direction in order to display said first predetermined pattern toward the display direction;
a second light source that is disposed in said receiving space of said light path changing element and that is operable to emit light toward said second inclined surfaces in the second direction in order to display said second predetermined pattern toward the display direction,
a first light absorbing element that is disposed on said inner surrounding surface of said light path changing element;
and
a second light absorbing element that is disposed on said inner bottom surface of said light path changing element.

9 more elements

A pattern displaying device, comprising:

a light path changing element having a plurality of first inclined surfaces that are configured to reflect light incident from a first direction toward a display direction and that are arranged into a first predetermined pattern, and a plurality of second inclined surfaces that are configured to reflect light incident from a second direction toward the display direction and that are arranged into a second predetermined pattern, the first, second, and display directions being different from one another, the light path changing element further has a bottom surface that is connected to the first and second inclined surfaces, said first and second inclined surfaces being inclined relative to said bottom surface toward the display direction;
a first light source that is disposed at a first side of said light path changing element and that is operable to emit light toward said first inclined surfaces in the first direction in order to display said first predetermined pattern toward the display direction;
a second light source that is disposed at a second side of said light path changing element and that is operable to emit light toward said second inclined surfaces in the second direction in order to display said second predetermined pattern toward the display direction;
a control module that is electrically connected to said first and second light sources and that is operable to simultaneously control one of said first and second light sources to emit light and the other one of said first and second light sources not to emit light;
and
a reflective plate disposed on said bottom surface of said light path changing element opposite to the display direction.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/938,450Filed 11 Nov 2015
Priority: TW 103139409 A13 Nov 2014
Published: US 2016/0139321 A119 May 2016
Granted: 9 Oct 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 6/0035
Means for improving the coupling-out of light from the light guide: provided on the surface of the light guide or in the bulk of it
G02B 6/0036
Provided on the surface of the light guide or in the bulk of it: 2-D arrangement of prisms, protrusions, indentations or roughened surfaces
G02B 6/0055
Provided by one optical element, or plurality thereof, placed on the light output side of the light guide: reflecting element, sheet or layer
G02B 6/0068
Characterised by the light source being coupled to the light guide: arrangements of plural sources, e.g. multi-colour light sources