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US 10,545,337 B2Granted
See-through holographic display apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorsGeeyoung Sung, Yuntae Kim, Jungkwuen An, Hongseok Lee
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Abstract
A see-through holographic display apparatus includes a relay optical system expanding or reducing and transferring a hologram image generated by a spatial light modulator, a noise removal filter removing noise from diffraction light of the hologram image transferred through the relay optical system, and a light path converter changing at least one of a path of the diffraction light of the hologram image transferred from the relay optical system and a path of external light.
Claims28
A see-through holographic display apparatus comprising:
- a light source configured to emit light;
- a spatial light modulator configured to diffract the emitted light and generate a hologram image by modulating the emitted light;
- a relay optical system configured to expand or reduce the generated hologram image, and transfer the hologram image which has been expanded or reduced;
- a noise removal filter configured to remove noise from diffraction light of the transferred hologram image;
- a field optical element which has an incident surface on which the diffraction light of the transferred hologram image is incident;
- and
- a light path converter, on which the diffraction light, having passed the field optical element, and an external light are incident and which is configured to change a path of the diffraction light, and transfer at least one from among the diffraction light and the external light to a same region,
- wherein the relay optical system comprises:
- at least one optical element, and
- a moving lens holder which is coupled to the at least one optical element and moves the at least one optical element to change a distance between the at least one optical element and the field optical element so as to adjust a size of the hologram image transferred from the relay optical system,
- wherein the light path converter comprises a beam splitter comprising:
- a first surface which transmits the diffraction light of the transferred hologram image that is incident on the first surface,
- a second surface which transmits the external light incident thereon,
- a third surface opposite to the second surface,
- a fourth surface opposite to the first surface, and
- a beam separation film provided inside the beam splitter,
- wherein the field optical element comprises a reflection mirror having a concave surface facing the fourth surface of the beam splitter, and
- wherein the beam separation film is configured to transmit at least a part of the diffraction light, which is transmitted through the first surface, to the fourth surface, reflect at least a part of the diffraction light, which is reflected by the reflection mirror and transmitted through the fourth surface, to the third surface, and transmit at least a part of the external light, which is transmitted through the second surface, to the third surface.
15 more elements
A head mounted display (HMD) apparatus configured to display a hologram image, the HMD apparatus comprising:
- a left eye see-through holographic display apparatus;
- a right eye see-through holographic display apparatus;
- and
- a frame which connects the left eye see-through holographic display apparatus and the right eye see-through holographic display apparatus,
- wherein each of the left eye see-through holographic display apparatus and the right eye see-through holographic display apparatus comprises:
- a light source configured to provide light;
- a spatial light modulator configured to diffract the light and generate the hologram image;
- a relay optical system configured to expand or reduce the generated hologram image, and transfer the hologram image which has been expanded or reduced;
- a noise removal filter configured to remove noise from diffraction light of the transferred hologram image;
- a field optical element which has an incident surface on which the diffraction light of the transferred hologram image is incident;
- and
- a light path converter, on which the diffraction light having passed the field optical element and an external light are incident and which is configured to change a path of the diffraction light, and transfer at least one from among the diffraction light and the external light to a same region,
- wherein the relay optical system comprises:
- at least one optical element, and
- a moving lens holder which is coupled to the least one optical element and moves the least one optical element to change a distance between the relay optical system and the least one optical element, so as to adjust a size of the hologram image transferred from the relay optical system,
- wherein the light path converter comprises a beam splitter comprising:
- a first surface which transmits the diffraction light of the transferred hologram image that is incident on the first surface,
- a second surface which transmits the external light incident thereon,
- a third surface opposite to the second surface,
- a fourth surface opposite to the first surface, and
- a beam separation film provided inside the beam splitter,
- wherein the field optical element comprises a reflection mirror having a concave surface facing the fourth surface of the beam splitter, and
- wherein the beam separation film is configured to transmit at least a part of the diffraction light, which is transmitted through the first surface, to the fourth surface, reflect at least a part of the diffraction light, which is reflected by the reflection mirror and transmitted through the fourth surface, to the third surface, and transmit at least a part of the external light, which is transmitted through the second surface, to the third surface.
20 more elements
Dependencies are inferred from the claim text.