US 7,116,370 B1 · Image processing system optical shifting mechanism · patentgrep

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Abstract

An image processing system processes light conveying visual pattern information represented by individual light rays. The system includes an optical assembly having an input surface and an output surface. The input and output surfaces define a plurality of input and output positions, respectively, for the light rays to enter and exit, respectively, the assembly. The assembly includes a light-shifting apparatus operable so that a respective one of the light rays entering a respective one of the input positions is selectively shiftable by the apparatus in a first direction and, subsequently, in a second direction angled with respect to the first direction from a preceding one to another of the output positions. The assembly is further operable so that following each shifting operation, a respective one of the light rays transmitted by the assembly from an arbitrarily selected one of the output positions is solely derived from the light received from a single one of the input positions.

Claims72

Dependent claims

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly;
(b) said assembly including a light-shifting apparatus operable so that a respective one of said light rays entering a respective one of said input positions is selectively shiftable by said apparatus in a first direction and, subsequently, in a second direction angled with respect to said first direction from a preceding one to another of said output positions so as to define on an image sensor four output positions for each respective light ray entering said respective one of said input positions, said image sensor having a capture rate;
(c) said assembly further being operable so that following each shifting operation, a respective one of said light rays transmitted by said assembly from an arbitrarily selected one of said output positions is solely derived from said light received from a single one of said input positions wherein said optical assembly is operable in a manner such that aliasing components of said light are reduced;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

2 more elements

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly;
(b) said assembly including opposing first and second light-shifting devices, each device being operable so that a respective one of said light rays incident thereon is reversibly shiftable by said device in a corresponding direction, said devices being independently controllable and relatively configured so that said directions are out of alignment with each other so as to enable a respective one of said input rays entering a respective one of said input positions to be shifted consecutively on an image sensor having a capture rate to a first one, second one, third one, and fourth one of said output positions in a manner defining a two-dimensional pattern;
(c) each device being configured so that if a respective one of said rays is shifted by said device, then each one of said light rays transmitted by said device is correspondingly shifted together with said respective one of said rays in the same direction by the same amount, wherein said optical assembly is operable in a manner such that aliasing components of said light are reduced;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

2 more elements

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of continuous input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly;
(b) said assembly including a first and second light-shifting device having a first and second light-rotating unit, respectively, each unit being operable so that a respective one of said light rays transmitted thereby is selectively rotatable between a pair of plane polarized states, said devices being serially configured so as to enable a respective one of said light rays entering a respective one of said input positions to be consecutively shifted on an image sensor having a capture rate between a first one, second one, third one, and fourth one of said output positions in correspondence with the four discrete combinations of said states selectable via light-rotating units,
(c) assembly further being operable so following each shifting operation, each one of said light rays transmitted by said assembly is restricted in travel within said assembly to a corresponding one of a series of internal paths extending in substantially parallel relationship to each other, wherein said optical assembly is operable in a manner such that aliasing components of said light are reduced;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

2 more elements

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly;
(b) said assembly including a light-shifting apparatus operable so that a respective one of said light rays entering a respective one of said input positions is selectively shiftable by said apparatus in a first direction from one to another of said output positions and, subsequently, in a second direction nonaligned with said first direction from a preceding one to another of said output positions so as to define on an image sensor four output positions for each respective light ray entering said respective one of said input positions, said image sensor having a capture rate;
(c) said assembly further being operable so that the portion of said pattern information conveyed in each one of said light rays transmitted by said assembly is, following each shifting operation, preserved free of combination with the portion of said pattern information conveyed by any other ones of said light rays, wherein said optical assembly is operable in a manner such that aliasing components of said light are reduced;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

2 more elements

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an image sensor having a capture rate and including an array of photoreceptors spaced apart from each other at lower spatial density than said visual pattern information such that said pattern information, in the absence of processing by said system, includes aliasing components;
(b) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly, said assembly including a light-shifting apparatus operable so that a respective one of said light rays entering a respective one of said input positions is selectively shiftable by said apparatus between four of said output positions, said assembly being arranged so that said light transmitted from said output positions is projected onto said sensor;
(c) a mode-controlling device to alternately operate said optical assembly in a first and second mode such that said aliasing components are alternately removed and retained by said assembly in said first and second mode, respectively;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

2 more elements

An image processing system for processing light conveying visual pattern information and represented by individual light rays, said system comprising:

(a) an optical assembly having an input surface and an output surface, said input and output surfaces defining a plurality of input and output positions, respectively, for said light rays to enter and exit, respectively, said assembly, said assembly including a light-shifting apparatus operable so that a respective one of said light rays entering a respective one of said input positions is selectively shiftable by said apparatus onto an image sensor having a capture rate between four of said output positions;
(b) a mode-controlling device to alternately operate said optical assembly in a first and second mode such that the rate at which said apparatus shifts a respective one of said light rays between respective ones of said output positions is increased and decreased for operation in said first mode and second mode, respectively, wherein said optical assembly is operable in a manner such that aliasing components of said light are reduced;
and
(d) a mode controlling device having a timer operably connected with said light-shifting apparatus, said mode controlling device selectively switchable between a first state and a second state, said first state causing each of said respective one of said light rays to shift between all four of said output positions during each cycle of said capture rate of said image sensor so as to reduce said aliasing components in two directions, and said second state causing each of said respective ones of said light rays to shift from at most one of said output positions during each cycle of said capture rate of said image sensor.

1 more element

Dependencies are inferred from the claim text.