Patent ID: 8192030
Filing Date: 2012-06-05
Classification: G02B,G03B,H04N

Abstract:
1. A laser illuminating device comprising: a laser light source; a first lens including a plurality of microlenses, each microlens of the plurality of microlenses having a predetermined numerical aperture in an in-plane direction, and each microlens of the plurality of microlenses being adapted to expand laser light emitted from the laser light source to thereby superimpose the laser light transmitted through each microlens of the plurality of microlenses; and a second lens having an effective diameter larger than an effective diameter of the first lens, and for compensating for a divergence angle of the laser light expanded by each microlens of the plurality of microlenses, wherein the laser light source emits a plurality of the laser light, such that each laser light emitted from the laser light source has a wavelength that is different from wavelengths of other laser lights emitted from the laser light source, and wherein the laser illuminating device satisfies relations expressed by formulas (1) through (5):