Abstract: A suspension system of a single-axis optical actuator is provided, including an elastic suspension plate in the form of a frame having two opposite ends each extended, through a beveled edge and a bending section, to form a cantilever arm. The elastic suspension plate is provided with a magnetic device on one side thereof. The cantilever arms are supported on a reinforcement frame to carry an optical lens. When an electric current is supplied through a connector to the magnetic device of the actuator, a reciprocal attraction or repulsion force is generated and applied to one side of the elastic suspension plate so that the elastic suspension plate may function as an oscillation member with an imaginary axis line between the two bending sections of the frame body as an axis to carry the optical lens to generate fast and position-constrained oscillation at two sides.

Abstract: A suspension system of a biaxial optical actuator is provided, including a circuit-carrying base and an oscillation member, which is provided, in a center thereof, with an optical lens. An elastic suspension plate is coupled to the oscillation member and has four corners each forming an elastic unit that projects outside the oscillation member. The elastic units collaborate with support posts to support the elastic suspension plate and the oscillation member at a location above the base. The oscillation member is provided, on each of four sides thereof, with a magnetic device. The four magnetic devices is sequentially activated to apply a magnetic force such that the oscillation member together with the optical lens carried thereon to rotate about two imaginary axes of the elastic suspension plate respectively defined between each pair of two opposite magnetic devices to thereby serve as a rotation axes of the oscillation member.

Abstract: A polyoxymethylene composition includes a polyoxymethylene copolymer with 1,3-dioxolane as a comonomer, a wear resistance agent, a nucleating agent, and an antistatic agent. A ramp is made of the polyoxymethylene composition. The ramp and the polyoxymethylene have excellent low-wear-debris property. The low wear debris polyoxymethylene composition can be used to produce a ramp for many different designs of hard disks, such as PMR (perpendicular recording)+TDMR (Two-Dimensional Magnetic Recording), SMR (Shingled Magnetic Recording), HAMR+ (HAMR (Heat Assisted Magnetic Recording)+SMR+TDMR), BPMR+ (BPMR (Bit Pattern Media Recording)+SMR+TDMR), and helium-filled hard disk.

Abstract: An asymmetric curved-surface prismatic image display optical system includes a first prism and second and third prisms respectively arranged in front of and behind the first prism. The first prism includes a light-exiting planar surface that is at an eye-adjacent side and is opposite to a light-entering planar surface of the second prism with an air gap therebetween and may serve as a reference for inspection of a free-form curved surface. The second prism has a light-exiting planar surface at the eye-adjacent side and parallel to a side planar surface of the third prism to allow an external-world image to be seen more clearly. Light from an image displaying panel first enters the first prism and is subjected to total internal reflection by the light-exiting planar surface toward the reflective curved surface to be reflected and re-directed to transmit through the second prism for image formation on a retina.

Abstract: A LCOS projection system includes an illumination device, a LCOS microdisplay element, a polarization beam splitter, an optical projection lens, and a beam recycling module. A first portion of the lighting beams provided by the illumination device are transmissible through the polarization beam splitter and directed to the LCOS microdisplay element. A second portion of the lighting beams provided by the illumination device and from the polarization beam splitter are introduced into the beam recycling module. By the beam recycling module, a polarization state of the second portion of the lighting beams is converted. Consequently, the second portion of the lighting beams in the converted polarization state can also be projected onto the LCOS microdisplay element. The beam recycling module includes a total internal reflection prism, which is arranged in a transmission path of the first portion and the second portion of the lighting beams.

Abstract: A color light mixing device, a color light mixing method and a small-sized projecting system using the color light mixing device are provided. The color light mixing device includes a tube structure, a plurality of light-emitting units, a reflective polarizer and a microlens assembly. The light-emitting units are located at an inlet end of the tube structure. The reflective polarizer is located at the other end of the tube structure. The microlens assembly is arranged between the light-emitting units and the reflective polarizer. By the color light mixing device, the light beams with a single polarization state are homogenized and outputted to a microdisplay element of the small-sized projecting system. By an optical projection lens assembly of the small-sized projecting system, an image shown on the microdisplay element is projected onto a screen.

Abstract: A projection system includes an illumination device, a LCOS microdisplay element, an optical projection lens, a total internal reflection prism, and a polarizer. The polarizer is a reflective polarizer or an absorptive polarizer. The total internal reflection prism is arranged between the illumination device, the LCOS microdisplay element and the optical projection lens. A plurality of lighting paths are created between the illumination device and the LCOS microdisplay element. A plurality of imaging paths are created between the LCOS microdisplay element and the optical projection lens. The polarizer is only located in the lighting paths.

Abstract: A durable polyoxymethylene composition includes a polyoxymethylene copolymer with 1,3-dioxolane as a comonomer, a lubricant, an inorganic filler, a nucleating agent including a sodium salt, a stabilizer, an anti-static agent. A ramp is made of the durable polyoxymethylene. The ramp and the durable polyoxymethylene have excellent micro-wear-resistant property.

Abstract: A LCOS projection system includes an illumination device, a LCOS microdisplay element, a polarization beam splitter, an optical projection lens, and a beam recycling module. A first portion of the lighting beams provided by the illumination device are transmissible through the polarization beam splitter and directed to the LCOS microdisplay element. A second portion of the lighting beams provided by the illumination device and from the polarization beam splitter are introduced into the beam recycling module. By the beam recycling module, a polarization state of the second portion of the lighting beams is converted. Consequently, the second portion of the lighting beams in the converted polarization state can also be projected onto the LCOS microdisplay element. The beam recycling module includes a total internal reflection prism, which is arranged in a transmission path of the first portion and the second portion of the lighting beams.

Abstract: A projection system includes an illumination device, a LCOS microdisplay element, an optical projection lens, a total internal reflection prism, and a polarizer. The polarizer is a reflective polarizer or an absorptive polarizer. The total internal reflection prism is arranged between the illumination device, the LCOS microdisplay element and the optical projection lens. A plurality of lighting paths are created between the illumination device and the LCOS microdisplay element. A plurality of imaging paths are created between the LCOS microdisplay element and the optical projection lens. The polarizer is only located in the lighting paths.

Abstract: A durable polyoxymethylene composition includes a polyoxymethylene copolymer with 1,3-dioxolane as a comonomer, a lubricant, an inorganic filler, a nucleating agent including a sodium salt, a stabilizer, an anti-static agent. A ramp is made of the durable polyoxymethylene. The ramp and the durable polyoxymethylene have excellent micro-wear-resistant property.