Star field projection apparatus
AssigneeBliss Holdings, LLC
InventorRandy E. Johnson
Life of this patent
Estimating the term…
Abstract
A projection apparatus for generating a moving star field and a cloud-like effect comprises a means for generating a cloud-like effect using at least one non-coherent light source, a means for generating a moving star field using at least one coherent light source and a means for regulating and supplying electric power. The means for generating cloud-like effect using at least one non-coherent light source comprises at least one pair of condenser lenses and an interferential filter wheel rotated by a motor, disposed between at least one pair of condenser lenses. The means for generating the moving star field using a coherent light source comprises a grating wheel rotated by a motor and a diffractive optical element disposed between the at least one coherent light source and the grating wheel.
Claims13
A projection apparatus, comprising:
- at least one diffractive optical source;
- at least one coherent light source, the at least one coherent light source positioned to direct light through the at least one diffractive optical source when power is supplied thereto;
- a power supply, wherein the at least one coherent light source and the at least one diffractive optical source generate a star field when supplied with power from the power supply;
- a grating wheel, wherein the at least one diffractive optical source is positioned between the at least one coherent light source and the grating wheel;
- and
- a first motor for rotating the grating wheel, wherein the at least one coherent light source, the grating wheel, the at least one diffractive optical source, and the first motor are adapted to generate a moving star field when supplied with power from the power supply.
A projection apparatus, comprising:
- at least one diffractive optical source;
- at least one coherent light source, the at least one coherent light source positioned to direct light through the at least one diffractive optical source when power is supplied thereto;
- a power supply, wherein the at least one coherent light source and the at least one diffractive optical source generate a star field when supplied with power from the power supply;
- at least one non-coherent light source;
- a first condenser lens;
- at least one interferential wheel, the at least one inferential wheel positioned between the non-coherent light source and the first condenser lens;
- and
- a motor for rotating the interferential wheel, wherein the at least one non-coherent light source, the interferential wheel, the first condenser lens, and the motor generate a cloud-like effect when supplied with power from the power supply.
A method of creating a star field, comprising:
- causing light from a coherent light source to pass through at least one diffractive optical element wherein the at least one coherent light source is positioned to direct light through the at least one diffractive optical source when power is supplied thereto;
- causing light from the coherent light source to pass through a grating wheel;
- and
- causing the grating wheel to rotate, wherein rotation is effectuated by a first motor attached to the grating wheel.
Dependencies are inferred from the claim text.