초록 ▼

A gradient index zoom illuminator which may be used for visible or infrared illumination comprises a housing which has a light exit opening in it. A point or collimated light source is mounted in the housing. A gradient index lens, having a central axis, also is mounted in the housing between the li

A gradient index zoom illuminator which may be used for visible or infrared illumination comprises a housing which has a light exit opening in it. A point or collimated light source is mounted in the housing. A gradient index lens, having a central axis, also is mounted in the housing between the light source and the light exit opening in the housing; and the light source is located on the axis of the lens. Focusing of the light exiting from the light exit opening of the housing is accomplished by changing the relative distance between the light source and the gradient index lens to vary the beam of emitted light from a maximum divergence to to a narrow collimated beam.

대표청구항 ▼

A gradient index zoom illuminator including in combination: a housing having a light exit opening therein; a light source mounted in said housing; a power supply; switch means selectively interconnecting and disconnecting said light source and said power supply; a gradient index lens means having a

A gradient index zoom illuminator including in combination: a housing having a light exit opening therein; a light source mounted in said housing; a power supply; switch means selectively interconnecting and disconnecting said light source and said power supply; a gradient index lens means having a central axis and mounted in said housing between said light source and the light exit opening in said housing, said light source located on the axis of said lens means; and means for changing the relative distance between said light source and said lens to change the focus of light exiting from said light exit opening in said housing from a predetermined maximum divergence to a collimated beam of light produced by said light source.