| 摘要 |
The invention provides a vehicle-mounted projection device. When the vehicle-mounted projection device projects a holographic image projected on a screen on a windshield, deformation of the image can be fully corrected even if the multiplying power is raised. According to the vehicle-mounted projection device, phase modulation is carried out on laser through utilization of a phase modulation array to enable the holographic image (70h) to form on the screen. The holographic image (70h) is reflected by a reflector (55a) of a first projection mirror (55) and a reflector (56a) of a second projection mirror (56) on the windshield. A projection ratio is set through utilization of the first projection mirror (55) and the second projection mirror (56), and deformation of the image due to inclination and bending of the windshield is corrected. Correction is realized through utilization of the two projection mirrors, so that deformation of the image can be suppressed even if the projection ratio is raised. |
