Panasonic Intellectual Property Management Co., Ltd.

Masaki Amie

Kazumasa Takata

Masaru Fujita

Hiroki Hara

Wahei Agemizu

Tomohisa Sakaguchi

Taichi Tabata

Yoshiaki Ueta

An optical system includes a light guide member having an incident surface, a first surface and a light emergent surface; and at least one prism provided on the first surface and configured to reflect light received by the incident surface and travelling inside the light guide member, towards the light emergent surface. The light guide member provides an optical path along which the light that has entered through the incident surface is directly reflected from the prism and allowed to emerge from the light emergent surface. The light guide member also provides another optical path along which the light that has entered through the incident surface is once reflected from the second surface, reflected again from the prism, and then allowed to emerge from the light emergent surface. The optical system is configured to be coupled to a light source, to illuminate a display system which projects a virtual image onto a target space.

Optical system for a display system projecting a virtual image onto a target space

An optical system includes a light guide member having a light incident surface, a first surface, and a light emergent surface facing the first surface; and a prism provided in the first surface for reflecting light passing inside the light guide member towards the light emergent surface. The light guide member includes a direct optical path, along which the light that has entered the light guide member through the incident surface is directly reflected from the prism and allowed to emerge from the light emergent surface. At least one of the first surface or the light emergent surface includes a luminous intensity distribution control member configured to control a luminous intensity distribution of light to be extracted from the light emergent surface. The luminous intensity distribution control member includes a Fresnel lens.

A mirror holding structure includes: a holder; at least one protrusion part provided to one of a mirror body and the holder; at least one reception part provided to the other of the mirror body and the holder and having an insertion hole in which the at least one protrusion part is to be inserted; and at least one elastic part located between an outer peripheral surface of the at least one protrusion part and an inner peripheral surface of the insertion hole and being elastic.

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Shizuoka, Japan

Masaki Amie