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US 2019/0293928 A1Published application
Liquid lens with reduced chromatic aberration
AssigneeCorning Incorporated
InventorRaymond Miller Karam
Life of this patent
Estimating the term…
Abstract
A liquid lens can include two or more liquids enclosed in a chamber. The liquid lens can be configured to reduce the chromatic aberration produced when the meniscus formed at the interface of two of the liquids is tilted. This can be accomplished in a number of ways including selecting the liquids to maximize the refractive index difference and minimize the Abbe number difference.
Claims24
A liquid lens comprising:
- a chamber;
- a first liquid and a second liquid positioned in the chamber, and a meniscus formed at an interface of the first liquid and the second liquid;
- wherein the first liquid has a first refractive index and a first Abbe number, and the second liquid has a second refractive index and a second Abbe number;
- wherein an absolute value of a difference between the first refractive index and the second refractive index is at least 0.13;
- wherein an absolute value of a difference between the first Abbe number and the second Abbe number is no more than 22;
- and
- wherein a chromatic aberration of the liquid lens is less than a diffraction-limited resolution of the liquid lens over at least a portion of a full field of view and a wavelength range of 0.4861 microns to 0.6563 microns for an optical tilt angle of 0.484 degrees relative to an optical object plane.
4 more elements
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A liquid lens comprising:
- a chamber enclosing a first liquid, a second liquid, and a meniscus formed at an interface of the first liquid and the second liquid;
- wherein a chromatic aberration of the liquid lens is less than a diffraction-limited resolution of the liquid lens over at least a portion of a full field of view and a wavelength range of 0.4861 microns to 0.6563 microns for an optical tilt angle of 0.484 degrees relative to an optical object plane.
(canceled)
A method of making a liquid lens comprising:
- calculating a diffraction-limited resolution of a liquid lens over at least a majority of a full field of view and a wavelength range of 0.4861 microns to 0.6563 microns;
- calculating a chromatic aberration of the liquid lens over at least the majority of the full field of view and the wavelength range for an optical tilt angle of 0.484 degrees relative to an optical object plane;
- selecting at least two liquids for which the value of the chromatic aberration is less than the diffraction-limited resolution at a same field distance throughout at least the majority of the full field of view;
- and
- depositing the at least two liquids in a chamber to form a meniscus between the at least two liquids.
2 more elements
Dependencies are inferred from the claim text.