Fig. 4
From: Integral imaging near-eye 3D display using a nanoimprint metalens array
The AR prototype based on the meta-II display. Red, green, and blue images (real images) are presented on a dark background. a The image is captured by focusing on the green number “3” and the chess piece “Rook” with details enlarged in the red frame at the right. Note that the number “3” and the chess piece “Rook” are clear, while the letter “D” and the chess piece “Pawn” behind are blurry. b The image is captured by focusing on the green letter “D” and the chess piece “Pawn.” At this point, the letter “D” and the chess piece “Pawn” become clear, while the chess piece “Rook” and the number “3” in the front become blurry. Similar results of (c, d) blue and (e, f) red images