AN IMAGE GENERATOR HAVING A MINIATURE DISPLAY DEVICE

摘要

An image generator having an illuminator, a reflective display device (504) (in one embodiment) and a beamsplitter (505) which produces a virtual image of an image created in a light modulating medium on said reflective display device. The display device includes a viewing lens (531) and also includes a fresnel lens (530). A light box (533) has an output aperture or output port (533a) which illuminates the display (504) by directing light from the output aperture (533a) to the mirror (532) which in turn reflects light through the fresnel lens (530). The mirror and fresnel lens are held by a support of frame (534). In one embodiment, the image generator is a miniature image generator for a relatively small, lightweight head-mounted display which provides a magnified virtual image which is viewed by a viewer. The beamsplitter is optically coupled to the reflective display device. The beamsplitter comprises a film having a plurality of layers including at least a first layer which comprises an oriented birefringent material. The beamsplitter has a wide angle of acceptance.