Dual mode optical Magnifier system
First Claim
1. A dual mode optical magnifier system comprising:
- a plurality of multi-order diffractive optical elements, including at least one of a reflective, refractive, or single-order diffractive surface formed thereon, in combination, operable between a low magnification virtual image display mode and a high magnification virtual image display mode, each of the plurality of multi-order diffractive optical elements having formed on at least one surface thereof, a plurality of stepped phase gratings, defining a plurality of zones dependent on a phase function that each of the plurality of multi-order diffractive optical elements is implementing;
an image generation apparatus for generating each of a low density image and a high density image dependent upon operation between the low magnification virtual image display mode and the high magnification virtual image display mode; and
a housing, wherein the plurality of multi-order diffractive optical elements and the image generation apparatus are mounted within the housing and the multi-order diffractive optical elements are adjustable within the housing, so as to operate between the low magnification virtual image display mode and the high magnification virtual image display mode.
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Accused Products
Abstract
A dual mode optical magnifier system (22) including a plurality of multi-order diffractive optical elements (24) having at least one reflective, refractive and conventional diffractive surface formed thereon, that in combination are operable between a low magnification virtual image display mode (26) and a high magnification virtual image display mode (28). The multi-order diffractive optical elements (24) include a plurality of zones defined by P×2π, where P is an integer. The use of multi-order diffractive optical elements (24) enables the elements (24) to be very planar and compact in form so as to be incorporated into portable electronic equipment (40 and 60) such as cellular telephones, pagers, smart card readers (20), computers, or the like, while enabling the desired magnification level to be achieved.
66 Citations
7 Claims
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1. A dual mode optical magnifier system comprising:
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a plurality of multi-order diffractive optical elements, including at least one of a reflective, refractive, or single-order diffractive surface formed thereon, in combination, operable between a low magnification virtual image display mode and a high magnification virtual image display mode, each of the plurality of multi-order diffractive optical elements having formed on at least one surface thereof, a plurality of stepped phase gratings, defining a plurality of zones dependent on a phase function that each of the plurality of multi-order diffractive optical elements is implementing; an image generation apparatus for generating each of a low density image and a high density image dependent upon operation between the low magnification virtual image display mode and the high magnification virtual image display mode; and a housing, wherein the plurality of multi-order diffractive optical elements and the image generation apparatus are mounted within the housing and the multi-order diffractive optical elements are adjustable within the housing, so as to operate between the low magnification virtual image display mode and the high magnification virtual image display mode. - View Dependent Claims (2, 3, 4, 5)
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6. A dual mode optical magnifier system comprising:
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an image generation apparatus, mounted on a mounting structure positioned within a housing, for generating at least one image, the image generation apparatus including a semiconductor chip mounted on the mounting structure, the image generation apparatus further including a two dimensional array of light emitting devices formed on the semiconductor chip and selectively cooperating to generate each of a low density image and a high density image, the light emitting devices being positioned in rows and columns to define all pixels of the image and operably connected to mounting pads adjacent outer edges of the semiconductor chip; and a plurality of multi-order diffractive optical elements positioned within the housing in optical alignment with the image generation apparatus, the plurality of multi-order diffractive optical elements including at least one of a reflective, refractive, or single order diffractive surface formed thereon, in combination the plurality of multi-order diffractive optical elements operable in each of a low magnification virtual image display mode and a high magnification virtual image display mode, each of the plurality of multi-order diffractive optical elements having formed on at least one surface thereof a plurality of stepped phase gratings, defining a plurality of zones on an order of P×
2π
, the plurality of multi-order diffractive optical elements positioned to receive the generated image at an optical input and provide an enlarged virtual image at an aperture, the plurality of multi-order diffractive optical elements moveably stacked one atop another dependent upon a mode of operation. - View Dependent Claims (7)
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Specification