Light source device and projection type display apparatus including light source device

A projection type display apparatus comprising:

• a wavelength conversion element including a fluorescent body for converting a wavelength of light from a light source;
• a light condensing member configured to condense light from the light source to the wavelength conversion element, the light condensing member being arranged to face a surface of the fluorescent body;
• a heat conductive member having heat conductivity greater than heat conductivity of the light condensing member;
• a heat dissipation member contacting with the heat conductive member;
• a light modulation element for modulating light from the light source device;
• and
• an illumination optical system for illuminating the light modulation element with light from the light source device,
• wherein at least a part of the fluorescent body, the heat conductive member, and the light condensing member are overlapped and in contact with each other in this order when viewed from an optical axis direction of the light condensing member.