Patent ID: 9028101
Filing Date: 2015-05-12
Classification: F21V,G02B,H04N

Abstract:
1. A display light source, comprising: a light source for providing a light beam; a color wheel comprising a first path segment and a second path segment, wherein each of the first path segment and the second path segment includes a reflective segment and at least one filtering segment arranged along an arcuate direction of the color wheel, the first path segment is disposed on an inner loop of the color wheel, and the second path segment is disposed on an outer loop of the color wheel, the inner loop and the outer loop forming adjacent concentric rings coaxial with the color wheel, the at least one filtering segment of the first path segment aligns to the reflective segment of the second path segment along the radial direction of the color wheel, and the reflective segment of the first path segment aligns to the filtering segment of the second path segment along the radial direction of the color wheel; an optical module disposed between the light source and the color wheel for guiding the light beam to the color wheel; and an actuator for rotating the color wheel, such that the light beam impinges on at least one of the reflective segments and the filtering segments of the first path segment and the second path segment, wherein when the light beam impinges on the filtering segment of the first path segment, the light beam passes through the filtering segment of the first path segment and is filtered to form a first primary-color light beam, and when the light beam impinges on the reflective segment of the first path segment, the light beam is reflected to the optical module, the optical module guiding the reflected light beam to the filtering segment of the second path segment, such that the reflected light beam passes through the second path segment and is filtered to form a second primary-color light beam.