SCANNING PROJECTION APPARATUS AND PORTABLE PROJECTION APPARATUS
First Claim
Patent Images
1. A scanning projection apparatus comprising:
- a light source module which includes a laser light source to emit a laser beam;
a light deflection unit which includes an oscillating mirror unit and performs a two-dimensional scanning with the laser beam emitted from the light source module by the mirror unit to project a projection image onto an image projection surface;
a light detection unit which detects a distance from the mirror unit to the image projection surface or a difference in distance in the image projection surface; and
a control unit which controls an oscillation angle of the mirror unit based on distance information from the light detection unit.
0 Assignments
0 Petitions
Accused Products
Abstract
A scanning projection apparatus is provided with a first light source module which includes a laser light source to emit a laser beam and a mirror unit which can be oscillated. Further, a light deflection unit which performs a two-dimensional scanning with the laser beam emitted from the first light source module by the mirror unit, a light detection unit which detects a distance from the mirror unit to an image projection surface or a difference in distance in the image projection surface, and a control unit which controls an oscillation angle of the mirror unit based on distance information from the light detection unit are included.
-
Citations
11 Claims
-
1. A scanning projection apparatus comprising:
-
a light source module which includes a laser light source to emit a laser beam; a light deflection unit which includes an oscillating mirror unit and performs a two-dimensional scanning with the laser beam emitted from the light source module by the mirror unit to project a projection image onto an image projection surface; a light detection unit which detects a distance from the mirror unit to the image projection surface or a difference in distance in the image projection surface; and a control unit which controls an oscillation angle of the mirror unit based on distance information from the light detection unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10)
-
-
8. A scanning projection apparatus comprising:
-
a light source module which includes a laser light source to emit a laser beam; a light deflection unit which includes an oscillating mirror unit and performs a two-dimensional scanning with the laser beam emitted from the light source module by the mirror unit to project a projection image onto an image projection surface; an irradiation light projection unit which reflects the laser beam emitted from the light deflection unit in a direction different from an emitting direction; and a transparent optical imaging unit which is disposed at a predetermined angle with respect to a projection surface of the irradiation light projection unit in the emitting direction of a reflection light beam from the irradiation light projection unit, and the projection image is projected into a space on a side opposite to the irradiation light projection unit with the optical imaging unit interposed therebetween. - View Dependent Claims (9, 11)
-
Specification