Variable-focus light emitting device

A light-emitting device and variable technology, which are applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problem of large-accommodating space lens groups, difficult to miniaturize or thin design, and difficult to follow the user's needs. It is necessary to adjust the angle of the lighting direction and other issues to achieve the effect of changing the lighting range and changing the lighting angle.
CN102809103AInactive Publication Date: 2012-12-05BENQ CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BENQ CORP
Publication Date
2012-12-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a variable-focus light emitting device which comprises a light source module and a focus varying module. The light source module comprises a plurality of semiconductor light emitting units. The focus varying module is disposed on one side of the light source module and comprises a circuit board and a plurality of liquid lenses disposed on the circuit board. The liquid lenses comprise first liquid and second liquid. A liquid interface is disposed between the first liquid and the second liquid. The liquid lenses correspond to the light emitting units. Different curvature of the liquid interface is generated by the liquid lenses according to different voltage applied by the circuit board. Light emitted by the light emitting units irradiates into corresponding liquid lenses, and angles of the light emitting from the liquid lenses changes according to the curvature of the liquid interface. By the variable-focus light emitting device, lighting range and light angles can be changed, and size miniaturization and thinning of the overall device are facilitated.
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Description

technical field

[0001] The invention relates to a light emitting device, in particular to a variable focus light emitting device. Background technique

[0002] Lighting devices are very common in daily life, especially lighting devices that can change the lighting range, such as stage lights, display lights, car lights, warning lights or fish collection lights and so on. Generally, the way to change the illumination range is usually to achieve optical zoom by combining multiple lenses. By adjusting the relative position between the lens groups, different illumination ranges are produced. However, this method of using lens groups for optical zoom requires more The large accommodation space allows the mechanism components and the lens group to move with each other, and it is not easy to achieve miniaturization or thinning design. In addition, since the structural elements and lens groups are configured on the light-emitting device, usually the illumination range of the light-...

Claims

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