Light source apparatus and image display apparatus

An image display apparatus, comprising:

• a light source apparatus including
• at least one solid-state light source configured to output light in a predetermined wavelength range,
• a first optical system including at least one aspherical surface configured to convert a light flux from the at least one solid-state light source into a substantially parallel light flux,
• an output unit including at least one light emitter that is excited by the light from the at least one solid-state light source and emits visible light with a wavelength longer than that of the light, the output unit being configured to output, as output light, light containing the light in the predetermined wavelength range and the visible light from the at least one light emitter, and
• a second optical system including at least one concave reflecting surface, the second optical system being configured to reflect the light on the at least one concave reflecting surface, the light coming from the at least one solid-state light source and being converted into the substantially parallel light flux by the first optical system, to collect the light to the at least one light emitter of the output unit;
• an image generation system including
• an image generation element configured to generate an image based on applied light, and
• a lighting optical system configured to apply the output light from the light source apparatus to the image generation element;
• and
• a projection system configured to project the image generated by the image generation element.