Visible light modulation device and optical engine including the same

A visible light modulation device, comprising:

• a light source part having a plurality of optical semiconductor devices each configured to emit a light with a visible light wavelength of 400 nm to 700 nm so as to emit multiple lights;
• a light modulation output part having a plurality of Mach-Zehnder type optical waveguides each consisting of a convex fabricated lithium niobate film, and being configured so that each of the lights emitted from each of the plurality of optical semiconductor devices are incident on a corresponding Mach-Zehnder type optical waveguide;
• and
• wherein a current value input to each of the plurality of optical semiconductor devices is a constant value, and
• the plurality of Mach-Zehnder type optical waveguides are configured such that a peak output of each wavelength of the lights emitted to the outside through the plurality of Mach-Zehnder type optical waveguides has a predetermined color ratio with respect to other lights output by the Mach-Zehnder type optical waveguides.

A visible light modulation device, comprising:

• a light source part having a plurality of optical semiconductor devices each configured to emit a light with a visible light wavelength of 400 nm to 700 nm so as to emit multiple lights;
• a light modulation output part having a plurality of Mach-Zehnder type optical waveguides each consisting of a convex fabricated lithium niobate film, and being configured so that each of the lights emitted from each of the plurality of optical semiconductor devices are incident on a corresponding Mach-Zehnder type optical waveguide;
• and
• wherein a current value input to each of the plurality of optical semiconductor devices is a constant value, and
• a controller configured to control voltages applied to the plurality of Mach-Zehnder type optical waveguides is provided such that a peak output of each wavelength of the lights emitted to the outside through the plurality of Mach-Zehnder type optical waveguides has a predetermined color ratio with respect to other lights output by the Mach-Zehnder type optical waveguides.

A visible light modulation device comprising:

• a light source part having a plurality of optical semiconductor devices each configured to emit a light with a visible light wavelength of 400 nm to 700 nm so as to emit multiple lights;
• a light modulation output part having a plurality of Mach-Zehnder type optical waveguides each consisting of a convex fabricated lithium niobate film and being configured so that each of the lights emitted from each of the plurality of optical semiconductor devices is incident on the corresponding Mach-Zehnder type optical waveguide, and having a multiplexing part configured to multiplex modulation light from the plurality of Mach-Zehnder type optical waveguides;
• and
• a controller configured to control a current value input to each of the plurality of optical semiconductor devices such that a peak output of each wavelength of the lights emitted to the outside through the plurality of Mach-Zehnder type optical waveguides has a predetermined color ratio with respect to other lights output by the Mach-Zehnder type optical waveguides.