Abstract: A method for fabricating air media layer within the semiconductor optical device is provided. The step of method includes a substrate is provided, a GaN thin film is formed on the substrate, a sacrificial layer is formed on the GaN thin film, and a nitride-containing semiconductor layer is formed on the sacrificial layer. The semiconductor optical device is immersed with an acidic solution to remove the portion of sacrificial layer to form an air media layer around the residual sacrificial layer.

Abstract: A method for fabricating air media layer within the semiconductor optical device is provided. The step of method includes a substrate is provided, a GaN thin film is formed on the substrate, a sacrificial layer is formed on the GaN thin film, and a nitride-containing semiconductor layer is formed on the sacrificial layer. The semiconductor optical device is immersed with an acidic solution to remove the portion of sacrificial layer to form an air media layer around the residual sacrificial layer.

Abstract: A compact camera module includes multiple hollow cylinders, a voice coil motor and a torsion spring. An intervening cylinder is mounted on a base. An upright rail is disposed on the intervening cylinder and perpendicular to a support plane of the base. An inner cylinder has a zoom lens inside and at least one moving component, wherein the inner cylinder is disposed in a hollow space of the intervening cylinder and the moving component slides within the upright rail. An outer cylinder is disposed around the intervening cylinder. The outer cylinder has a sloping rotational rail supporting the moving component. A wire coil is secured around the outer cylinder. A torsion spring encircles the outer cylinder and is secured to the base and the wire coil at two ends. A magnet-generating device is disposed around the wire coil and secured on the base.

Abstract: A compact camera module includes multiple hollow cylinders, a voice coil motor and a torsion spring. An intervening cylinder is mounted on a base. An upright rail is disposed on the intervening cylinder and perpendicular to a support plane of the base. An inner cylinder has a zoom lens inside and at least one moving component, wherein the inner cylinder is disposed in a hollow space of the intervening cylinder and the moving component slides within the upright rail. An outer cylinder is disposed around the intervening cylinder. The outer cylinder has a sloping rotational rail supporting the moving component. A wire coil is secured around the outer cylinder. A torsion spring encircles the outer cylinder and is secured to the base and the wire coil at two ends. A magnet-generating device is disposed around the wire coil and secured on the base.