Magnification device and assembly
A magnification device including a housing having a distal open end and a proximal open end is disclosed. The housing includes an optical system including one or more objective lenses adjacent the distal open end, and one or more eye lenses adjacent the proximal open end, the optical system produced a desired level of magnification; and a filtering system having first filter selectively filtering a first group of wavelengths and a second filter selective filtering a second group of wavelengths. The first and second filters having an optical density selected based on a magnification level of the optical system. A vision enhancing assembly including a carrier device and one or more magnification devices coupled to the carrier device is also disclosed, wherein the magnification devices include filters that have optical densities based on a magnification level.
1. A magnification device, comprising:
a housing comprising a distal open end and a proximal open end;
an optical system comprising:
at least one objective lens mounted in said housing adjacent said distal open end, and
at least one eye lens mounted in said housing adjacent said proximal open end, wherein said at least one objective lens and said at least one eye lens forming a telescopic device achieving a desired level of magnification of light entering the optical system; and
a filtering system comprising:
a first filter lens mounted to said distal open end, said first filter lens configured to:
attenuate a first group of wavelengths associated with the light; and
attenuate a second group of wavelengths associated with the light, said first filter lens having a first optical density; and
a second filter lens mounted to said proximal open end, said second filter lens configured to:
attenuate the first group of wavelengths; and
attenuate the second group of wavelengths, said second filter lens having a second optical density, wherein a combination of said first optical density and said second optical density is at least equal to a desired optical density, wherein said desired optical density is determined based on the desired level of magnification achieved by the optical system.
2. The magnification device according to claim 1 , wherein at least one of said at least one objective lens is convex.
3. The magnification device according to claim 1 , wherein at least one of said at least one objective lens is selected from a group consisting of: rectangular and circular.
4. The magnification device according to claim 1 , wherein said first group of wavelengths and said second group of wavelengths are separated non-overlapping groups.
5. The magnification device according to claim 1 , wherein said optical system is Galilean.
6. The magnification device according to claim 5 , wherein at least one of said at least one eye lens is concave or negative.
7. The magnification device according to claim 1 , wherein said optical system is Keplerian.
8. The magnification device according to claim 7 , wherein at least one of said at least one eye lens is convex or positive.
9. The magnification device according to claim 1 , wherein said optical system further comprises:
a spectacle correction lens mounted in said housing adjacent said proximal open end.
10. The magnification device according to claim 1 , wherein said filtering system attenuates selected wavelengths in the range of 190 nm to 10600 nm.
11. The magnification device according to claim 1 , wherein said filtering system comprises:
a plurality of absorptive lenses, each of said plurality of absorptive lenses having an optical density less than said desired optical density, wherein said first filter lens comprises:
at least one of said plurality of absorptive lens positioned in front of said at least one objective lenses; and
at least one of said plurality of absorptive lens positioned behind said one or more eye lenses.
12. The magnification device according to claim 1 , wherein said filtering system comprises:
a plurality of reflective lenses, each of said plurality of reflective lenses having an optical density less than said desired optical density, wherein said first filter lens comprises:
at least one of said plurality of reflective lenses positioned in front of said at least one objective lens; and
said second filter lens comprises:
at least one of said plurality of reflective lenses positioned behind said at least one eye lens.