Abstract:
A receptacle ferrule assembly for a fiber optic receptacle connector. The receptacle ferrule assembly comprises a first lens (155) with first second optical surfaces and a receptacle ferrule body having first and second ends. At least one monolithic optical system is formed in a monolithic receptacle ferrule body and includes a lens (420) formed at the second end of monolithic receptacle ferrule body and an optical surface formed at the first end of monolithic receptacle ferrule body. The optical surface is situated adjacent to, and mated to the second optical surface (155S2) of the first lens The monolithic optical system is configured, in conjunction with the first lens, to define a receptacle optical pathway from the second end of the monolithic optical system to the first surface of the first lens. According to some embodiments the first lens is a gradient index lens.
Abstract:
The present disclosure introduces a number of image compression schemes designed to optimize operational efficiency in laser scanning projectors. Contemplated compression modes include, but are not limited to, intra-frame energy transfer, inter-frame energy transfer, and combinations thereof. The image compression modes disclosed herein are equally applicable to native laser sources and synthetic sources, such as green lasers based on a non-linear wavelength conversion. In cases where multiple lasers are used together in a multi-color projection system, it will often be preferable to favor particular image compression modes for particular colors, particularly where image brightness is more readily attributable to one color, e.g., green, because of the spectral responsivity of the human eye.
Abstract:
The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, Vj of the image signal. Error signals E1, Ei, Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, Vj of the image signal. These error signals E1, Ei, Ej are utilized to apply corrected control signals G1', Gi', Gj' to the gain section of the semiconductor laser for projection of compatible discrete portions V1', Vi', Vj' of the image signal. According to another embodiment of the present invention, a system is provided for generating a projected laser image.
Abstract:
The present invention relates generally to a wavelength conversion device (10) and a laser projection system (100) incorporating the same. According to one embodiment of the present invention, the wavelength conversion device is provided to a laser projection system (100). The wavelength conversion device (10) comprises an axial waveguide portion (12A) and a pair of lateral planar waveguide portions (12B) confined between a pair of relatively low index cladding layers (14). The effective index of refraction in the axial waveguide portion (12A) of the waveguide region and the effective index of refraction in the lateral planar waveguide portions (12B) of the waveguide region (12) are established such that the relatively low intensity laterally distributed parasitic light (17) is associated with a scattering angle ? that is at least as large as the beam divergence angle of the relatively high intensity light (15) propagating in the axial waveguide portion (12A).