Young Optics Inc.

Keng-Han Chuang

Chu-Ming Cheng

Chao-Shun Chen

Yi-Hao Kang

Sung-Nan Chen

Yi-Hsueh Chen

Chia-Chen Liao

Long-Sheng Liao

Chia-Chang Lee

Ching-Lun Lin

Yu-Po Chen

Bo-Cheng Huang

Chun-Fa Hsu

Kuo-Chiang Lin

Yung-Kuang Liu

Teng-Hung Hung

A three-dimensional printing apparatus includes a container and a projecting structure. The container is configured to contain a liquid photosensitive material. The projecting structure is configured to provide a variety of molding beams to irradiate the liquid photosensitive material. The photoinitiator is suitable for polymerizing with a monomer after receiving the first molding beam with the first wavelength to form a solidified layer with a first color, and the photoinitiator is suitable for polymerizing with the monomer after receiving the second molding beam with the second wavelength to form a solidified layer with a second color, wherein the first color is different from the second color. The projecting structure comprises a light combiner module, disposed on the transmission paths of a variety of light beams. The wavelengths of the first molding beam and the second molding beam are between 355 nm to 415 nm.

Three-dimensional printing apparatus and three-dimensional printing method

A three-dimensional printing apparatus includes a container and a projecting structure. The container is configured to contain a liquid photosensitive material. The liquid photosensitive material includes a variety of photoinitiators and a monomer. The projecting structure is configured to provide a variety of molding beams to irradiate the liquid photosensitive material. The variety of molding beams have different wavelengths and are used to actuate a polymerization between one of the variety of photoinitiators and the monomer respectively thereby forming a solidified layer. A three-dimensional printing method is also provided.

An illumination system, a projection device, and an illumination method are provided. The illumination system includes a polarized light source, a polarization switching element, a beam splitting element, a wavelength conversion element, a reflective element, and a wave plate. The polarized light source emits a polarized light beam with a first color. The polarization switching element switches a polarized direction of the polarized light beam at different time points. The beam splitting element separates polarized light beams having different polarized directions. The wavelength conversion element converts the polarized light beam having a first polarized direction to a converted light beam. The reflective element reflects the polarized light beam having a second polarized direction to form a reflected light beam. The beam splitting element combines the converted light beam and the reflected light beam comes from the wave plate disposed between the beam splitting element and the reflective element.

Illumination system, projection device and illumination method

An optical touch system includes a non-visible light source, a screen, a first and second polarizing elements, and an optical detector. The non-visible light source emits a non-visible beam. A part of the non-visible beam passes through the screen disposed in a light path of the non-visible beam. The touch object reflects the part of the non-visible beam into an object beam when a touch object approaches or touches the screen, and the object beam passes through the screen. The first polarizing element is disposed in the light path of the non-visible beam and between the non-visible light source and the screen. The optical detector is disposed in a light path of the object beam, and senses the object beam. The second polarizing element is disposed in the light path of the object beam passing through the screen and between the screen and the optical detector.

Optical touch system

A light combination device includes a reflective element and a first color separating element. The reflective element guides first color light beams emitted from at least a first light source and a second light source to propagate in a first direction. The first light source and the second light source are differently positioned in a space. The first color separating element transmits the first color light beams and reflects second color light beams emitted from at least a third light source and a fourth light source. The third light source and the fourth light source are differently positioned in the space. The first color separating element has a coating curved surface, and a curvature of the coating curved surface is varied according to positions of the third light source and the fourth light source to guide the second color light beams to propagate in the first direction.

Light combination device

An illumination system includes a coherent light source providing an illumination beam, a light integrator positioned on a transmission path of the illumination beam, and a first actuator connected to the light integrator. The light integrator has a light entering end and a light exit end opposite to the light entering end, and the light entering end faces the coherent light source. The first actuator is capable of driving the light integrator to about a rotation axis perpendicular to a light axis of the illumination beam passing through the light integrator, so as to change a position at the light entering end entered by the illumination beam.

Illumination system having coherent light source and integrator rotatable transverse the illumination axis

An illumination system includes a light source module, a chromaticity-adjusting light source and a light-combining element. The light source module provides a first color light beam, a second color light beam and a third color light beam. The chromaticity-adjusting light source provides a chromaticity-adjusting light beam. The light-combining element is disposed on the transmission paths of the chromaticity-adjusting light beam and the color light beams provided by the light source module to combine the color light beams with the chromaticity-adjusting light beam into an illumination beam.

Illumination system

An illumination system including a coherent light source and a speckle-reducing module is provided. The coherent light source is adopted for providing a light beam. The speckle-reducing module is disposed at an optical path of the light beam. The speckle-reducing module includes a rotator, a carrier and an optical path adjusting member. The rotator is adopted for rotating on a reference plane about a spindle axis passing through the rotator. The spindle axis is substantially perpendicular to the reference plane. The carrier is disposed at the rotator. The optical path adjusting member is disposed at the carrier and at the optical path of the light beam. The optical path adjusting member has an incident surface inclined at an angle with respect to the reference plane.

The optical system of a projection display apparatus. The projection display apparatus includes a light source, a prism, a light valve, and a projection lens. A light beam emitted from the light source impinges into the prism and passes through the first surface of the prism directly to illuminate the light valve which is placed near the first surface and parallels the first surface. By the reflection of the light valve, the light beam impinges into the first surface again, and illuminates a total internal reflection surface with an incidental angle large than the critical total reflection angle, so as to reflect the light beam out of the second surface of the prism and impinge to projection lens to form an image. Therefore, the optical system can increase the transmission and decrease the number of components, and reduce its overall volume.

Optical system for projection display apparatus

An optical system disposes a total reflection lens between a light valve and a projection lens. When a white light beam, emitting from a light source, passes through a color-generating device, the color of the light beam is sequentially converted into red, green, and blue primaries, and uniformed by an integrator. Then, the light beam impinges into the total reflection lens and is reflected to the light valve. The light valve reflects the light beam into a projection lens to be projected on a screen. Therefore, this invention increases the projection efficiency, and reduces the bulk and components of the optical system.

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Hsinchu, Taiwan

Keng-Han Chuang