Zoom strobe device
AssigneePENTAX Corporation
InventorTakaaki Yano
Life of this patent
Estimating the term…
Abstract
A zoom strobe device is provided with a light emitting unit, which includes a light source and a reflector and a light collecting lens that collects the light emitted by the light emitting unit. The light emitting unit and the light collecting lens are movable relative to each other in a direction of an optical axis of the light collecting lens. The light collecting lens is configured such that a light emitting unit side surface has a positive power, and a surface opposite to the light emitting unit side surface (i.e., the object side surface) has a negative power. The light collecting lens has a positive power as a whole.
Claims6
A zoom strobe device, comprising:
- a light emitting unit including a light source and a reflector;
- a light collecting lens that collects the light emitted by said light emitting unit, said light emitting unit and said light collecting lens being movable relative to each other in a direction of an optical axis of said light collecting lens,
- said light collecting lens being configured such that a light emitting unit side surface has a positive power, a surface opposite to the light emitting unit side surface has a negative power, and has a positive power as a whole.
Dependencies are inferred from the claim text.