Abstract: An operating button includes a light source, a push rod with a diverging lens, and an operating head with a condensing lens. The optical center of the diverging lens, the optical center of the condensing lens and the light source are in the same line such that light rays generated by the light source pass through the diverging lens and the converging lens before exiting the operating head as parallel light.

Abstract: A button includes a housing, an operating portion, a mount, a first pushing rod, a bridge, an elastic member, and a second pushing rod. The mount is mounted in the housing. The first pushing rod is movably disposed in the mount. A bump is formed on the first pushing rod. The bridge and the operating portion are disposed on ends of the first pushing rod. The second pushing rod is movably disposed on the bridge and is effected by the elastic member. A step is formed in the housing and is located between the mount and the bridge. The elastic member is disposed on the first pushing rod and is located between the bump and the step. The first pushing rod is slidable relative to the mount under the effect of the operating portion or the elastic member, and drives the bridge and/or the second pushing rod to move.

Abstract: Disclosed is an operating button, including a light source, a push rod and an operating head. The light source can output light rays. The push rod is provided with a diverging lens and the operating head is provided with a condensing lens. The optical center of the diverging lens, the optical center of the condensing lens and the light source are in the same line. The operating button has only one diverging lens and one condensing lens on the propagation light path of the light rays generated by the light source, and therefore the distance between the light source and the diverging lens can be conveniently adjusted and the brightness of the light rays irradiated by the operating button is improved without causing any light spot.

Abstract: A button includes a housing, an operating portion, a mount, a first pushing rod, a bridge, an elastic member, and a second pushing rod. The mount is mounted in the housing. The first pushing rod is movably disposed in the mount. A bump is formed on the first pushing rod. The bridge and the operating portion are disposed on ends of the first pushing rod. The second pushing rod is movably disposed on the bridge and is effected by the elastic member. A step is formed in the housing and is located between the mount and the bridge. The elastic member is disposed on the first pushing rod and is located between the bump and the step. The first pushing rod is slidable relative to the mount under the effect of the operating portion or the elastic member, and drives the bridge and/or the second pushing rod to move.

Abstract: A plastic housing includes a plastic substrate and a decorative pattern layer attached on the plastic substrate. The decorative pattern layer includes an primer layer of a predetermined pattern formed on the plastic substrate and a colored pattern layer printed on the primer layer. The colored pattern layer is impervious to the color of the background color of the color layer, thus enabling housings with different colors to have substantially the same visual effects.

Abstract: A single-pass optical parametric amplifier is provided. The single-pass optical parametric amplifier comprises a light source emitting a fundamental wave having a wavelength range; a nonlinear material, which the fundamental wave passes therethrough to form a second harmonic generation wave having a light path; a supercontinuum generator extending the wavelength range of the fundamental wave to form a supercontinuum generation seed; and an optical parametric wavelength transformer transforming the supercontinuum generation seed and the second harmonic generation wave into a signal wave and an idler wave.

Abstract: A method of manufacturing a housing includes steps of providing a transparent film including a first surface and an opposing second surface; applying adhesive material on the first surface of the transparent film; placing the treated transparent film in a mold, the second surface of the transparent film attached to the inner molding surface of the mold. Plastic material is injected into the mold to form a plastic base overlaid with the transparent film; and defining a predetermined decorative pattern in a top portion of the plastic base beneath the adhesive layer using a laser etching process. The decorative pattern cannot be sensed by touch rough because it is located between the plastic base and the cover layer.

Abstract: A single-pass optical parametric amplifier is provided. The single-pass optical parametric amplifier comprises a light source emitting a fundamental wave having a wavelength range; a nonlinear material, which the fundamental wave passes therethrough to form a second harmonic generation wave having a light path; a supercontinuum generator extending the wavelength range of the fundamental wave to form a supercontinuum generation seed; and an optical parametric wavelength transformer transforming the supercontinuum generation seed and the second harmonic generation wave into a signal wave and an idler wave.

Abstract: A method for making a device housing comprises: providing a metal substrate; providing a transparent or translucent film, the film being formed with a pattern coating on one surface thereof; forming a bonding coating on the metal substrate; and heat pressing the film and the metal substrate into a whole with the pattern coating bonding with the bonding coating. A device housing manufactured by the method is also described there.