US 2016/0360166 A1Published application

Light source unit and projector

AssigneesCasio Computer Co., Ltd., Epas

InventorMasahiro OGAWA

Life of this patent

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Abstract

A projector includes alight source unit including a light source, a luminescent wheel having light source segments receiving light from the light source to emit different wavelength ranges of light, a color wheel separate from the luminescent wheel that has a first transmission area transmitting light, in visible light, existing in a certain range of wavelengths and a second transmission area transmitting light existing in a range of wavelengths broader than that of the light transmitted through the first transmission area and on to which the different wavelength ranges of light from the luminescent wheel are shone, and a control module controlling not only the luminescent wheel and the color wheel so that they are synchronized with each other but also the light source so that the light emitted from the light source is sequentially shone on to the light source segments.

Claims17

Dependent claims

A light source unit comprising:

a light source;
a luminescent wheel having a plurality of segments that receive light emitted from the light source to emit different wavelength ranges of light;
a color wheel separate from the luminescent wheel that has a first transmission area that transmits light, in visible light, that exists in a certain range of wavelengths and a second transmission area that transmits light that exists in a range of wavelengths that is broader than the range of wavelengths of the light that is transmitted through the first transmission area and on to which the different wavelength ranges of light from the luminescent wheel are shone;
and
a control module configured to control not only the luminescent wheel and the color wheel so that the luminescent wheel and the color wheel are synchronized with each other but also the light source so that the light emitted from the light source is sequentially shone on to the plurality of light source segments.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/063,231Filed 7 Mar 2016
Priority: JP 2015-1147305 Jun 2015
Published: 8 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04N 9/3158
Modulator illumination systems: for controlling the spectrum
G02B 26/008
The movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light: in the form of devices for…
G03B 21/204
LED or laser light sources: using secondary light emission, e.g. luminescence or fluorescence
H04N 9/3114
For displaying the colours sequentially, e.g. by using sequentially activated light sources: by using a sequential colour filter producing one…