Longitudinal off-axis three-mirror optical system for vehicle-mounted head-up display device
An optical system and off-axis three-mirror technology, which is applied in the field of longitudinal off-axis three-mirror optical system, can solve the problems that it is difficult to ensure a wide range of eye box diameters, poor imaging quality, blurred pictures, etc., and achieve a good MTF curve and structure The effect of compact, clear use
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[0026] The technical features of the present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can understand.
[0027] A longitudinal off-axis three-mirror optical system for a vehicle-mounted head-up display device, including a luminescent screen L7, a secondary reflector L6 is provided obliquely in front of the luminescent screen L7, and a main reflector L6 is provided obliquely in front of the secondary reflector L6. Reflector L5, a protective glass L4 is arranged obliquely above the main reflector L5, and a windshield L3 is arranged above the protective glass L4.
[0028] exist figure 1 Among them, on the luminous screen L7 is the on-board information required by the driver. The light diverged from the luminous screen L7 reaches the secondary reflector L6, is reflected by the secondary reflector L6 and converges on the primary reflector L5, and the light is reflected by the primary reflector ...
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