Free-form condenser optic
AssigneeLight Prescriptions Innovators, LLC
InventorsPablo Benitez, Juan Carlos Minano, Jose Blen Flores
Life of this patent
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Abstract
A condenser for directing light from a UHP arc lamp or other generally cylindrical source onto a target such as a microdisplay in line with a front end of the lamp comprises a primary mirror to direct light from the source towards the back end of the condenser, and a secondary mirror at the back end of the condenser to direct the light from the primary mirror onto the target.
Claims20
An optical system for directing light from a source onto a target generally in line with a first end of the source, the optical system comprising:
- a pair of primary optical elements symmetrical under reflection in a reference plane passing through the source and the target and arranged to direct light from the source towards a second end of the condenser opposite the first end of the cylinder;
- wherein the two primary optical elements together encircle the source, and meet along the reference plane on both sides of the source;
- and
- a pair of secondary optical elements symmetrical under reflection in a reference plane passing through the source and the target and arranged at the second end of the condenser to direct the light from respective ones of the primary optical elements onto the target.
An optical system for directing light from a source onto a target generally in line with a first end of the source, the optical system comprising:
- a primary optical element arranged to direct light from the source towards a second end of the condenser opposite the first end of the cylinder;
- and
- a secondary optical element arranged at the second end of the condenser on the opposite side of a reference plane passing through the source and the target from the primary optical element to direct the light from the primary optical element onto the target;
- wherein at least 70% of the light reaching the target from the source reflects off both the primary and the secondary optical elements.
An optical system for directing light from a source onto a target generally in line with a first end of the source, the optical system comprising:
- a primary optical element arranged to direct light from the source towards a second end of the condenser opposite the first end of the cylinder;
- and
- a secondary optical element arranged at the second end of the condenser to direct the light from the primary optical element onto the target;
- wherein at least 70% of the light reaching the target from the source reflects off both the primary and the secondary optical elements.
Dependencies are inferred from the claim text.