Seiko Epson Corporation

Sieko Epson Corporation

Akira Komatsu

Takashi Takeda

Masayuki Takagi

Toshiaki Miyao

Takahiro Totani

Tokito Yamaguchi

Kunihiko Yano

Akira Uematsu

Hiroyuki Mukaiyama

Osamu Yokoyama

Kazutoshi Kato

Yoichi Sato

Akihiro Shimizu

Takeshi Koshihara

Katsuyuki Honda

Kazuya Kamakura

Tadashi Kaga

Takeshi Fujishiro

Noriyuki Nakamura

Toshiharu Katada

Takuya Ikeda

Masatoshi Yonekubo

Masahide Takano

Mitsutaka Ide

Yoshihiro Tatara

Hideki Kato

Noriaki Hiraide

Hayato Matsuki

Mitsuo Nagata

Shoichi Nagao

Keiko Kumagai

A head-mounted display includes an image display device including a panel unit serving as a display element configured to display an image, a colored optical member disposed on a light path of imaging light emitted from the panel unit and having a yellowness of a predetermined value or greater, and a coloring correction optical member configured to correct a degree of coloring of the imaging light of the entire light path in accordance with the yellowness of the colored optical member.

Head-mounted display

A head-mounted display includes a display device configured to display an image, a diopter adjustment device configured to adjust a diopter, and a correction processing circuit serving as an image correction device configured to correct a display image in accordance with a degree of diopter adjustment. In the adjustments made on a left side and a right side, respectively, after diopter adjustment, the display image is corrected in accordance with the degree of diopter adjustment.

A panel unit configured to, for imaging light, use different opening ratios depending on a wavelength band for displaying an image, a yellowing optical member that is disposed on an optical path of imaging light emitted from the panel unit, and turns yellow with age, a yellowing degree estimation unit configured to estimate, by prediction, a yellowing degree of the yellowing optical member with age, and a luminance adjustment unit configured to, depending on yellowing of the yellowing optical member, based on data of the yellowing degree estimation unit, adjust luminance of an image in the panel unit, are provided.

A virtual image display device includes an image element configured to display an image, a first lens disposed in an extraction position of image light and including at the image element side thereof a convex surface, a second lens disposed further toward the image element side than the first lens and including a concave surface bonded to the convex surface of the first lens, a half mirror provided in a bonding portion for bonding together the convex surface and the concave surface, a transmission/reflection selection member provided at a light emitting side of the first lens and configured to selectively perform transmission or reflection of the light depending on a polarization state of the light, and a light-guiding portion keeping close contact between the image element and the second lens and configured to guide the image light.

Virtual image display device

A head-mounted display includes a display device, a projection optical member, a prism member, and a light condensing and reflecting surface. The prism member includes a first prism, and a second prism that is disposed further toward an exit pupil side than the first prism. The first prism includes an incident surface, a reflection surface that totally reflects the image light, and a first joining surface that is joined with the second prism via a semi-transmissive reflection surface. The second prism includes a second joining surface that is joined with the first joining surface, and an opposing flat surface that is disposed parallel to the reflection surface to face the reflection surface and configured to transmit the image light, reflected by the semi-transmissive reflection surface and then by the light condensing and reflecting surface and thereafter passing through the semi-transmissive reflection surface.

Image formation is performed by using a synthesis optical system, and in a first dichroic film and a second dichroic film that are the synthesis surfaces in the synthesis optical system, a direction in which the cross axis that is the intersecting axis extends corresponds to a direction of alignment of eyes of an observer.

Virtual-image display apparatus

A half mirrorprovided in an optical path bends the optical path, and a semi-transmissive polarizing plateincreases the transmittance of image light GL in a direction along alignment of the eyes of an observer while the virtual image display device has a wide angle of view and is downsized, thus reducing luminance unevenness between the central region and the peripheral region in the image in the direction and allowing the observer to view a high quality image.

A virtual image display device includes a display light guiding unit, and an image forming unit that emits image light to the display light guiding unit, the display light guiding unit includes a first light guiding unit that guides image light corresponding to a first angle of view, and a second light guiding unit that guides image light corresponding to a second angle of view, among angles of view of image light emitted from the image forming unit, and the first light guiding unit and the second light guiding unit respectively include incident side diffraction elements that take the image light beams into the inside, and emission side diffraction elements that emit the image light beams to the outside.

Virtual image display device including incident side and emission side diffraction elements

A see-through display apparatus includes an image display apparatus configured to emit a video light, a light guide apparatus configured to guide the video light and to output the video light in a first direction, and a light control shade disposed opposite to the first direction with respect to the light guide apparatus. The light control shade is configured to control a transmittance of an outside light based on a luminance of the outside light. A first response time of the light control shade when the outside light changes from a lower luminance to a higher luminance is slower than a second response time of the light control shade when the outside light changes from the higher luminance to the lower luminance.

Light control shade for transmissive display apparatus

Provided is a virtual image display apparatus including a laser light source, a scanner configured to scan light from the laser light source and render an intermediate image, a diffusion element arranged at a position of the intermediate image formed by the scanner, and an exit pupil forming unit configured to cause light that has passed through the diffusion element to be incident on a position of an exit pupil. The diffusion element separates the light from the scanner into first emission light used as a reference, and second emission light having a separation angle greater than a capturing angle corresponding to an inclination of light toward a predetermined pupil radius relative to the first emission light at an emission position of the light from the diffusion element, and then emits the first emission light and the second emission light.

Virtual image display apparatus

An image display device includes a plurality of display elements configured to emit image light corresponding to a plurality of separate areas, and an ocular optical system configured to emit, to a position corresponding to an eye of an observer, the image light emitted from the plurality of display elements. The ocular optical system causes images to overlap with each other in a blending area including a boundary between the plurality of areas. An overlapping angle width in a direction orthogonal to the boundary of the blending area on a central visual field side is smaller than an overlapping angle width in the direction orthogonal to the boundary of the blending area on a peripheral visual field side.

Image display device having ocular optical system causing images to overlap in a blending area

In a head mounted display, an image is displayed with central resolution higher than peripheral resolution or the peripheral resolution is not necessarily high resolution, and a controller changes the display aspect of the image formed by an image formation apparatus in accordance with a change in the sightline detected with a sightline sensor.

Head mounted display and image formation optical system

A head-mounted display includes a display device, a projection optical member, and a prism member. The prism member includes a first prism receiving image light from the projection optical member, and a second prism disposed at a position further toward an exit pupil than the first prism. The first prism includes an entrance surface, a first reflection surface, and a first joining surface, the second prism includes a second joining surface joined to the first joining surface via a semi-transmissive reflection surface, a second reflection surface, and a light collecting reflection surface, and the semi-transmissive reflection surface is configured to reflect the image light, reflected by the light collecting reflection surface and then totally reflected by the second reflection surface, to pass through the second reflection surface.

An eyepiece optical system is configured to emit image light that is emitted from a plurality of display elements and corresponds to a plurality of areas being divided, to a position corresponding to an eye of an observer, wherein a first optical member of a complex type disposed at a position closest to an emitting side corresponding to at least two areas of the plurality of areas has a first optical surface on the emitting side, and the first optical surface is expressed by one curvature.

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Tatsuno-machi, Japan

Akira Komatsu