L aser suture lysis is commonly performed after trabeculectomy and is titrated to control postoperative flow through the filter to a target intraocular pressure. Originally, the flat edge of a Zeiss 4-mirror lens was used to compress the conjunctiva and Tenon capsule to view the sutures. The Hoskins lens designed for suture lysis improved the view and allowed eyelid elevation for better exposur...

We present a new approach to solar concentration where sunlight collected by each lens in a two-dimensional lens array is coupled into a shared, planar waveguide using localized features placed at each lens focus. This geometry yields a thin, flat profile for moderate concentration systems which may be fabricated by low-cost roll manufacture. We provide analyses of tradeoffs and show optimized ...

A variable-focus liquid lens using a transparent flat cell is demonstrated. The top substrate has an aperture which is sealed with a thin elastic membrane on the outer surface and the bottom aperture is sealed on the inner surface of the bottom substrate. By applying a pressure to the outer membrane inward causes the liquid to redistribute and swell the inner membrane outward which, in turn, fo...

We present new limits on cosmological parameters from the statistics of gravitational lensing, based on the recently revised knowledge of the luminosity function and internal dynamics of E/S0 galaxies that are essential in lensing high-redshift QSOs. We find that the lens models using updated Schechter parameters for such galaxies, derived from the recent redshift surveys combined with morpholo...

Interactive fisheye views allow users to edit data and manipulate objects through the distortion lens. Although several varieties of fisheye lens exist, little is known about how the different types fare for different interactive tasks. In this paper, we investigate one kind of interaction – layout of graphical objects – that can be problematic in fisheyes. Layout involves judgments of distance...

Modeling and experimental results of an ultrasonic aperiodic flat lens for use in air are presented. Predictive modeling of the lens is performed using a hybrid genetic-greedy algorithm constrained to a linear structure. The optimized design parameters are used to fabricate a lens. A method combining a fiber-disk arrangement and scanning laser vibrometer measurements is developed to characteriz...

The numerical aperture (NA) of a lens determines its ability to focus light and its resolving capability. Having a large NA is a very desirable quality for applications requiring small light-matter interaction volumes or large angular collections. Traditionally, a large NA lens based on light refraction requires precision bulk optics that ends up being expensive and is thus also a specialty ite...

We designed, fabricated and characterized a flat multi-level diffractive lens (MDL) comprised of only silicon with diameter = 15.2mm, focal length 19mm, operating over the longwave infrared (LWIR) spectrum 8um to 14um. experimentally demonstrated field view 46deg, depth focus >7mm wavelength-averaged Strehl ratio 0.46. All these metrics were comparable those conventional refractive lens. The ac...