Projection device providing reduced speckle contrast
AssigneeHon Hai Precision Industry Co., Ltd.
InventorChiu-Ping Chen
Life of this patent
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Abstract
A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a light beam that is directed to the dichroic element. The dichroic element forms first and second individual light beams from the light beam. The first individual light beam is transmitted to the diffuser. The second individual light beam is reflected from the reflector to the diffuser. The actuator is fixed to the reflector and has a removal frequency exceeding 20 Hz.
Claims16
A projection device, comprising:
- a diffuser;
- and
- a light source system, comprising
- a light source;
- a dichroic element;
- an actuator;
- and
- a reflector;
- wherein the light source is capable of generating a light beam that is directed to the dichroic element;
- the dichroic element is capable of forming first and second individual light beams from the light beam;
- the first individual light beam is transmitted to the diffuser, and the second individual light beam is reflected from the reflector to the diffuser;
- the actuator is fixed to the reflector and has a removal frequency exceeding 20 Hz.
A projection device comprising:
- a diffuser;
- a light source system comprising a light source, a dichroic mirror, and a reflector;
- the light source is capable of generating a light beam that is directed to the dichroic element, the dichroic element is capable of forming first and second individual light beams from the light beam;
- the first individual light beam being transmitted to the diffuser;
- the second individual light beam being reflected from the reflector to the diffuser;
- and
- an actuator fixed to the reflector and having a removal frequency exceeding 20 Hz.
Dependencies are inferred from the claim text.