WAVELENGTH SELECTIVE ELEMENT, MANUFACTURING APPARATUS FOR WAVELENGTH SELECTIVE ELEMENT, METHOD OF MANUFACTURING WAVELENGTH SELECTIVE ELEMENT, LIGHT SOURCE DEVICE, IMAGE DISPLAY DEVICE, AND MONITOR

摘要

PROBLEM TO BE SOLVED: To provide a wavelength selective element capable of reducing coherence among a plurality of laser beams and suppressing speckle noise with a simple configuration, to provide a manufacturing apparatus for the wavelength selective element, to provide a light source device, and to provide an image display device.

SOLUTION: The wavelength selective element comprises: one base member; a plurality of light selective regions formed in the base member, in which a predetermined selective wavelength is selected from among laser beams emitted from a plurality of light emission elements of emitting the laser beams; and interference regions (a) to (d) having interference fringes formed therein, each of which is disposed on each of the plurality of light emission elements (A) to (D), wherein a spacing of interference fringe of at least one of interference regions (a) to (d) differs from the spacing of interference fringes of remaining interference regions (a) to (d).

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