Wide field personal display

A display apparatus comprising:

• a) a flat display source;
• b) a lens spaced apart from the display source and having a concave refractive surface and a concave reflective surface, and
• c) a beam splitter plate disposed in an optical path between the display source and the lens and along a line of sight of a viewer viewing a real-world object scene, the beam splitter plate having first and second parallel surfaces oblique to the line of sight of the viewer,
• wherein the beam splitter plate is further disposed to provide image-bearing light from the display source to the lens, and wherein the beam splitter plate and lens define the optical path that conveys the image-bearing light for a first refraction through refractive surface, reflects the refracted light from the reflective surface, and refracts the reflected light from the refractive surface back to the beam splitter, said beam splitter plate provides the light toward the viewer along the line of sight of the viewer, and wherein:
• (i) a focal length of the lens is between 38 mm and 64.7 mm;
• (ii) said display apparatus defines a horizontal field of view H, wherein 30 degrees≤H≤60 degrees;
• and
• (iii) the beam splitter plate has a length that is between 100 mm and 170 mm.

A display apparatus comprising for displaying augmented reality images to a viewer, said display apparatus comprising:

• a display source that generates a field of image-bearing light from a surface;
• a lens spaced apart from the display source and, said lens having a concave refractive surface and a concave reflective surface;
• and
• a beam splitter plate disposed in space along an optical path between the display source and the lens, said beam splitter plate having first and second substantially parallel surfaces that are oblique to a line of sight of the viewer, wherein
• the lens and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer such that the line of sight for an object scene extends through beam splitter plate and the lens.