-
公开(公告)号：US20220163878A1
公开(公告)日：2022-05-26
申请号：US17670813
申请日：2022-02-14
Inventor： Yuki YAMAGATA
Abstract: A light source lighting device includes: a laser light source unit; a converging lens that converges a plurality of light beams emitted from the laser light source unit; a diffuser plate that diffuses a plurality of light beams converged by the converging lens; and a second collimating lens that collimates a light beam diffused by the diffuser plate. The converging lens has an aspherical surface, the second collimating lens has a spherical surface, the aspherical surface of the converging lens has an aspherical surface coefficient that is set to cancel a positive spherical aberration of the second collimating lens. A luminous flux density in a proximity of an optical axis is lower than a luminous flux density in a peripheral part away from the optical axis, the optical axis being an axis of a light beam emitted from the second collimating lens.
-
公开(公告)号：US20210195147A1
公开(公告)日：2021-06-24
申请号：US17110801
申请日：2020-12-03
Inventor： Yuki YAMAGATA
Abstract: A light source device includes: a first reflector having a first reflective surface; a second reflector having a second reflective surface that is parallel to the first reflective surface and is located in a space behind the first reflective surface with respect to a normal direction of the first reflective surface; a first light source that emits a first light beam directed to the first reflective surface; and a second light source emitting a second light beam that is parallel to the first light beam. The second light beam is directed to the second reflective surface through a space in front of the first reflective surface.
-
公开(公告)号：US20240385504A1
公开(公告)日：2024-11-21
申请号：US18788719
申请日：2024-07-30
Inventor： Yuki YAMAGATA
IPC: G03B33/12
Abstract: An image generation unit includes: three light modulation elements of a first light modulation element, a second light modulation element, and a third light modulation element, the three light modulation elements each modulating light based on an image signal to generate image light; a color separating and combining prism that guides the light to each of the three light modulation elements and includes a first prism, a second prism, and a third prism arranged in order from a light incident surface of the color separating and combining prism along an optical axis; a light-shielding plate that absorbs a part of OFF light generated by the third light modulation element, the OFF light having passed through the third prism, the second prism, and the first prism; and a reflecting surface that reflects the OFF light emitted from the first prism in a direction of the light-shielding plate.
-
4.发明申请公开(公告)号：US20190310539A1
公开(公告)日：2019-10-10
申请号：US16375079
申请日：2019-04-04
Inventor： Shigekazu YAMAGISHI , Yuki YAMAGATA
Abstract: An illumination apparatus includes first and second laser light source units, each of which is configured by juxtaposing a plurality of laser light sources in an array, and which are provided to oppose each other. The illumination apparatus further include first and second reflecting members. The second reflecting member has a predetermined first gap and is divided into first and second reflecting portions, and the first reflecting member is disposed so as to pass through the first gap. The second outgoing light beam transmitted through the transmitting region of the first reflecting member and the fourth outgoing light beam transmitted through the transmitting region of the second reflecting member are reflected in the output light direction by the reflecting region of the second reflecting member and the reflecting region of the first reflecting member, respectively.
-
-
-
Search Results
4
records
(took 0.013 seconds)
