Image display apparatus with microlens plate having mutually fus

Details Image display apparatus with microlens plate having mutually fus Image display apparatus with microlens plate having mutually fus

1993-10-25

1994-10-25

Gross, Anita P.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 40, 359 61, G02F 11335, G02F 11343

Patent

active

053594401

ABSTRACT:
An image display apparatus includes a display panel unit having a plurality of pixels, and a flat-plate microlens array of a refraction index distribution type. The microlens array is constituted by forming a plurality of microlenses for converging illuminating light onto the respective ones of the pixels, in a substrate by a diffusion process. In the diffusion process, diffusion fronts of the neighboring microlenses of the flat-plate microlens array are fused into each other so as to form one continuous curved surface within the substrate.

REFERENCES:
patent: 4534622 (1985-08-01), Harada et al.
patent: 4790632 (1988-12-01), Miyakawa et al.
patent: 4836652 (1989-06-01), Oishi et al.
patent: 4945348 (1990-07-01), Ibamoto et al.
patent: 5052783 (1991-10-01), Hamada
patent: 5150138 (1992-09-01), Nakanishi et al.
patent: 5151801 (1992-09-01), Hiroshima
James J. Cowan, "Holographic Honeycomb Microlens", Optical Engineering, vol. 24 No. 5, Sep./Oct. 1985, pp. 796-802.

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