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US 12,704,775 B2Granted
Projection lens and projection device
AssigneeFUJIFILM Corporation
InventorHironobu Kayano
Life of this patent
Estimating the term…
Abstract
The projection lens includes: a third optical system that projects an image light toward a screen and that includes an emission lens located on a most projection surface side; and a light receiver. The light receiver receives an optical signal from the remote controller. The light receiver is attached to a position capable of receiving the optical signal transmitted through an emission lens, specifically, to a holding frame, and more specifically, to a first surface of the holding frame.
Claims16
A projection lens that projects an image light onto a projection surface, the projection lens comprising:
- an optical system including a first lens located on a most projection surface side;
- a light receiver that receives an optical signal from a remote controller, the light receiver being disposed at a position capable of receiving the optical signal transmitted through the first lens;
- and
- a holding frame that holds the first lens,
- wherein the light receiver is attached to the holding frame,
- wherein the optical system includes a second lens disposed on a side opposite to the projection surface of the first lens, the second lens having a lens surface with a radius smaller than a radius of a lens surface of the first lens,
- wherein the holding frame has
- a first surface facing an end portion of the first lens,
- a second surface facing an end portion of the second lens, and
- an intermediate surface extending in a radial direction and interconnecting the first surface and the second surface, and
- wherein the light receiver is attached to at least one of the first surface, the second surface, or the intermediate surface.
8 more elements
Dependencies are inferred from the claim text.