| 摘要 |
A projection display device, comprising a light source 101, an illuminating optical system 102 forming illuminating light, a reflective light bulb 106 forming an optical image by reflecting the illuminating light, a projection optical system 107 projecting the optical image, and a positive power lens 105, wherein the optical axis 115 of the reflective light bulb, the optical axis 113 of the projection optical system, and the optical axis 114 of the positive power lens are aligned with each other, the illuminating light system 102 is disposed so that the illuminating light is reflected by the reflective light bulb 106 after passing through the positive power lens 105, and the outgoing eye 108 of the illuminating optical system 102 and the incidence eye 109 of the projection optical system 107 are disposed so as to form a conjugate relation with the positive power lens 105. |
