Devices for cleaning contact lenses
A device for cleaning a contact lens includes a lid, a base portion and a drawer unit detachably coupled to the base portion. The drawer unit includes a container holding a volume of fluid therein. The device also includes a vibration generator for generating an oscillatory motion on the container, where the oscillatory motion induces turbulence in the fluid with sufficient force to dislodge deposits from a lens immersed in the fluid. The device also includes a circuit board secured to the base portion and a light source for generating radiation to disinfect the dislodged deposits in the fluid. A suspension secures the light source to the circuit board and a resonance frequency of the suspension is offset from a frequency of the oscillatory motion.
1. A device for cleaning a contact lens, comprising:
a container having a chamber for holding a volume of fluid therein;
a vibration generator for generating an oscillatory motion on the container, the oscillatory motion inducing turbulence in the volume of fluid with sufficient force and duration to dislodge deposits from a contact lens immersed in the volume of fluid;
a light source for generating radiation to disinfect the dislodged deposits in the fluid and disposed over the container during operation;
a board member having electronic circuits for controlling the vibration generator and light source and including at least one hole in which the light source is located; and
a suspension having a first end secured to the light source and a second end secured to the board member to suspendedly secure the light source to the board member, a resonance frequency of the suspension being different from a frequency of the oscillatory motion so that an intensity of an oscillatory motion transferred from the board member to the light source through the suspension is reduced.
2. The device of claim 1 , wherein the light source is an ultraviolet light emitting diode (UV LED).
3. The device of claim 2 , wherein a wavelength of the radiation ranges from 250 nm to 300 nm.
4. The device of claim 1 , wherein the light source generates the radiation in a continuous mode.
5. The device of claim 1 , further comprising:
a window assembly including a window and a window holder and detachably secured to the container to form an enclosed space for the fluid, the window being formed of material that is transparent to the radiation.
6. The device of claim 5 , wherein the window has a diffusing element that diffuses the radiation.
7. The device of claim 6 , wherein the diffusing element is a pattern formed on at least some portion of one surface of the window.
8. The device of claim 6 , wherein the diffusing element is a diffuser attached to a surface of the window.
9. The device of claim 6 , wherein the diffusing element partially transmits the radiation.
10. The device of claim 5 , further comprising:
a deflector disposed on the window and preventing the radiation from directly impinging on the contact lens.
11. The device of claim 10 , wherein the deflector has a conical surface that reflects the radiation and the container has an inner surface formed of material that reflects the radiation.
12. The device of claim 1 , further comprising:
a heat sink attached to the light source and configured to extract heat energy from the light source.
13. The device of claim 1 , wherein the suspension includes a wire for electrically connecting the light source to the board member.