Application No.: 13/444,923
`Amendment Dated September 23, 2014
`Reply to Office Action of July 1, 2014
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`Amendments to the Claims:
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`AOYB-431US
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`This listing of claims will replace all prior versions, and listings, of claims in the
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`application.
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`Listing of Claims:
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`1. - 8.
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`(Cancelled)
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`9.
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`(Currently Amended) A concentrating photovoltaic (PV) device comprising:
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`a light source configured to output light in a range of wavelengths;
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`at
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`least one concentrating lens configured to receive the light from the light
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`source and to separate the light passing through the respective concentrating lens into a
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`plurality of beamlets, each concentrating lens comprising:
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`a first surface having a Fresnel lens and a second surface opposite the first
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`surface, the second surface having a plurality of microlenses,
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`the Fresnel lens having a height extending from the first surface, wherein
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`lens is selected such that a—diffraetien—effieiefiey—ef
`at the height of the Fresnel
`.
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`V 9
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`—and—1a sum of a square phase retardation error (SE) for at least two different
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`wavelengths A1
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`in the range of wavelengths of the light outputted by the light
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`source is defined by
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`SE(d) = 21:]: (min(¢F (“1a 1i )2 2” ’ ¢F (d2’11' )»2
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`and is at a minimum for the selected height of the Fresnel lens,
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`wherein a phase retardation ”15,,
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`) is represented as:
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`Page 2 of 8
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`Application No.: 13/444,923
`Amendment Dated September 23, 2014
`Reply to Office Action of July 1, 2014
`
`AOYB-431US
`
`¢,.~ (d,A) = mod(
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`271610101) - 1) 2”]
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`ml
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`,
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`L
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`where d is the Fresnel lens height of the Fresnel lens, iis each wavelength of the light within
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`lg, n is a refractive index of the respective concentrating lens, m is a diffraction order of the
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`Fresnel lens, mod (*l represents a modulus, N represents a number of wavelengths of the at
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`least
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`two different wavelengths (1,.) and min(*)
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`represents a minimum of ¢F(d,£,) and
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`27r—¢,,(d,/l,); and
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`at
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`least one PV cell corresponding to the at
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`least one concentrating lens
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`configured to receive the respective plurality of beamlets.
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`10.
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`(Currently Amended) The concentrating PV device according to claim 9, wherein,
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`for each concentrating lens,
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`the selected height of
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`the Fresnel
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`lens
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`is configured to
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` simultaneously reduce ~
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`levelthe sum of
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`the s uare
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`hase retardation error
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`SE
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`for
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`the at
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`least
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`two different
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`wavelengths.
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`11.
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`(Original) The concentrating PV device according to claim 9, wherein, for each
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`concentrating lens,
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`the at
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`least
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`two different wavelengths correspond to one or more
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`wavelength absorption bands of the corresponding PV cell.
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`12.
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`(Original)
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`The concentrating PV device according to claim 9, wherein each
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`concentrating lens is configured to receive the light via the first surface.
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`13.
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`(Original)
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`The concentrating PV device according to claim 9, wherein each
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`concentrating lens is configured to receive the light via the second surface.
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`_
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`14.
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`(Original) The concentrating PV device according to claim 9, wherein the at least
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`one concentrating lens includes a plurality of concentrating lens and the at least one PV cell
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`includes a plurality of PV cells.
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`15.
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`(Original) The concentrating PV device according to claim 9, wherein, for each
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`concentrating lens, the Fresnel lens is configured to compensate for a dispersion by at least one
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`of the first surface or the second surface.
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`Page 3 of 8
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