Abstract: A wavelength combining apparatus includes first and second optical devices. The first optical device collects and collimates or focuses light from multiple laser light sources. The second optical device includes multiple nonparallel dichroic surfaces to combine light received from the first optical device.

Abstract: Briefly, in accordance with one or more embodiments, a display projector may comprise a light source to generate a beam to be scanned, a scanning platform to scan the beam in a selected pattern to project an image on a projection surface, and a collection lens and microlens array to shape the beam to a desired beam profile without significantly increasing spot size of the beam with increasing distance from the projection surface.

Abstract: An imaging system (100) includes one or more light sources (101,102,103) configured to produce one or more light beams (104,105,106). An additional light source (111) produces an additional light beam (112), which may be a non-visible light beam like an infrared beam. A spatial light modulator (107) is configured to produce images (109) on a projection surface (110) by scanning the light beams and the additional light beam within an image cone (118) oriented in a first direction (119). A partial reflector (117) is disposed within the image cone (118) and is configured to pass at least a portion of the light beams and reflect at least a portion of the additional light beam within a second cone (120) oriented in a second direction (121).

Abstract: A wavelength combining apparatus includes first and second optical devices. The first optical device collects and collimates or focuses light from multiple laser light sources. The second optical device includes multiple nonparallel dichroic surfaces to combine light received from the first optical device.

Abstract: A MEMS-based projector may be included in various user devices. A selective fold mirror, a MEMS-based projector, and a polarization rotator may be oriented to reflect a beam within the device for external projection. Alternatively, a total internal reflection prism may take the place of a selective fold mirror or a polarization rotator and may reduce the number of necessary components in the user device. Various optical components may be placed in the MEMS-based projector and arranged in different positions to reflect a light beam in a desired direction for external projection. The components that make up the MEMS-based projector may depend on the available footprint in the device and the direction in which the light beam is to be projected. Some optical components may provide multiple functionalities which would otherwise require multiple components and may reduce the size of the projector.

Abstract: A MEMS-based projector may be included in various user devices. A selective fold mirror, a MEMS-based projector, and a polarization rotator may be oriented to reflect a beam within the device for external projection. Alternatively, a total internal reflection prism may take the place of a selective fold mirror or a polarization rotator and may reduce the number of necessary components in the user device. Various optical components may be placed in the MEMS-based projector and arranged in different positions to reflect a light beam in a desired direction for external projection. The components that make up the MEMS-based projector may depend on the available footprint in the device and the direction in which the light beam is to be projected. Some optical components may provide multiple functionalities which would otherwise require multiple components and may reduce the size of the projector.