Double-ring lens filter holder
AssigneeMicroview Technology Corp.
InventorTzu-Shang HUANG
Life of this patent
Estimating the term…
Abstract
A double-ring lens filter holder has a slotted ring, an adapting ring mounted around the slotted ring, and an adjusting ring and a holding ring mounted within the slotted ring. An inner filter and a driving rod are attached to the adjusting ring. An outer filter is attached to the holding ring. When the outer filter and the inner filter are both polarizing filters, a user can rotate the outer filter and the inner filter simultaneously to adjust a polarizing effect. Then, the user can individually rotate the following inner filter to adjust a dimming effect. The polarizing effect that has been set is not affected when adjusting the dimming effect.
Claims8
A double-ring lens filter holder comprising:
- a slotted ring having
- an inner radial ring portion extending radially;
- a rear axial ring portion axially extending from an inner annular edge of the inner radial ring portion to a rear of the slotted ring;
- a front axial ring portion axially extending from an outer annular edge of the inner radial ring portion to a front of the slotted ring;
- and
- an arc slot formed through the front axial ring portion;
- an adapting ring mounted around the inner radial ring portion and the rear axial ring portion of the slotted ring, and engaging with the slotted ring;
- an adjusting ring rotatably mounted within a space that is surrounded by the front axial ring portion of the slotted ring;
- an inner filter rotatably mounted within a space that is surrounded by the adjusting ring, and the inner filter securely attached to the adjusting ring;
- a driving rod mounted through the arc slot of the slotted ring and securely connected to the adjusting ring;
- a holding ring mounted within a space that is surrounded by the front axial ring portion of the slotted ring, and the holding ring detachably connected with the front axial ring portion, wherein the adjusting ring is held between the holding ring and the inner radial ring portion of the slotted ring;
- an outer filter mounted within a space that is surrounded by the holding ring, and the outer filter securely attached to the holding ring.
Dependencies are inferred from the claim text.