LIGHTING APPARATUS
A lighting apparatus is provided. The lighting apparatus comprises a base, a light cover, at least a first light emitting element, and at least a second light emitting element. The light cover having an opening is disposed on the base and together with the base forms a holding space. The first light emitting element and the second light emitting element are disposed in the holding space. The wavelength of the light emitted from the first light emitting element is different from that emitted from the second light emitting element. The light cover is movable with respect to the first light emitting element. When the light cover is moved with respect to the first light emitting element, the light flux of the first light emitting element out of the light cover is changed.
1 . A lighting apparatus, comprising:
a base;
a light cover having an opening, wherein the light cover is disposed on the base and together with the base forms a holding space; and
at least a first light emitting element and at least a second light emitting element both disposed in the holding space, wherein the wavelength of a light emitted from the first light emitting element is different from the wavelength of a light emitted from the second light emitting element;
wherein the light cover is movable with respect to the first light emitting element, and when the light cover is moved with respect to the first light emitting element, the light flux of the first light emitting element out of the light cover is changed.
2 . The lighting apparatus according to claim 1 , wherein when the light cover is moved with respect to the first light emitting element, the light flux of the second light emitting element out of the light cover maintains constant.
3 . The lighting apparatus according to claim 1 , further comprising a light blocking structure fixed on the light cover, wherein the light cover together with the light blocking structure is movable with respect to the first light emitting element, and when the light blocking structure is moved with respect to the first light emitting element, an output area of the first light emitting element blocked by the light blocking structure is changed accordingly.
4 . The lighting apparatus according to claim 3 , wherein the light blocking structure has a light-transmitting region and a light blocking region, and when the light blocking structure is moved with respect to the first light emitting element, the second light emitting element remains corresponding to the light-transmitting region.
5 . The lighting apparatus according to claim 4 , wherein the light-transmitting region is an opening or a light-transmitting element.
6 . The lighting apparatus according to claim 4 , wherein when the light cover together with the light blocking structure is moved with respect to the first light emitting element, the output area of the first light emitting element blocked by the light blocking region is changed accordingly.
7 . The lighting apparatus according to claim 3 , further comprising a light converging structure disposed between the first light emitting element and the light blocking structure, wherein a relative position of the light collecting structure with respect to the first light emitting element remains unchanged.
8 . The lighting apparatus according to claim 7 , wherein the light converging structure has at least an indentation constantly corresponding to the first light emitting element.
9 . The lighting apparatus according to claim 1 , further comprising a adjustable resistor element electrically connected to the first light emitting element, wherein when the light cover is moved with respect to the first light emitting element, the adjustable resistor element has a resistance changed accordingly for changing the light intensity of the first light emitting element.
10 . The lighting apparatus according to claim 9 , further comprising a moving structure fixed on the light cover, wherein the light cover together with the moving structure is movable with respect to the first light emitting element, and the moving structure is connected to the adjustable resistor element.
11 . The lighting apparatus according to claim 9 , wherein the adjustable resistor element is a pulse width modulation (PWM) controller, a voltage controller or a current controller.