Liquid lens method pdf

Liquid lenses are wellsuited for a wide range of applications and can even provide a higher image quality than many mechanical options. The liquid crystals variablefocus lens was developed by varying the local refractive index of the material. Pdf a variablefocus liquid lens using a transparent flat cell is demonstrated. Liquid lens apparatus holmarc optomechatronics pvt. Stem education to solve the problem of taking a photograph of tiny object with liquid lens. Pdf determination of refractive index of a liquid using. The theory behind liquid lens is based on the properties of one or more fluids to create magnifications within a small amount of space. Formulas are derived for calculation of a radius of curvature of the internal interface between two liquids and refractive indices of liquids using the. There are a large variety of actuation methods that have been demonstrated for liquid lenses, including fluidic pressure 123, liquid crystal 4,5, hydrogel 6,7. Method of calculation of internal parameters of liquid lens. With its new design and features, one can easily understand the principles and practices involved.

The interface equationbased thin lens formula is then applied to the. The electrowetting process shapes the oil drop into an effective lens quickly and accurately. The focus of a liquid lens is controlled by the surface of the liquid. Liquid lens can be considered as infinitely variables lens. In the present paper, we describe a simple and inexpensive method for measuring the refractive index of liquids using a low power hene laser and a thin liquid. Liquid lens technology, due in large part to the flexibility it provides, has exploded in popularity in the industrial sector. Hoedo01 is designed for the determination of refractive index of a given liquid. The liquid lens literature largely deals with spherical lenses. If f be the focal length of the combination of the convex and liquid lens, then the focal length of the liquid lens, f 2 ff 1 f 1 f.

Liquid refractive index measurement system based on. Study of surface modes on a vibrating electrowetting liquid lens. Electro wetting with the applied potential, the contact angle of the conductive liquid was changed, which was referenced as electro wetting. The liquid lens physics astronomy project topics, physics science fair projects, pyhsical science, astrology, planets solar experiments for kids and also organics physics science ideas for cbse, icse, gcse, middleschool, elementary school for 5th, 6th, 7th. Determination of the refractive index of a liquid by a liquidlens method. Request pdf liquid lens and various tuning methods liquid lenses use the properties of two different liquids or one liquid confined within a small space to vary its focal length.

Liquid lens, electrowetting, electrowettingondielectric, ewod. Liquid lens structure the lens has a simple structure. The theory behind liquid lens is based on the properties of one or more liquids to create magnifications within a small amount of space. A travelling microscope, a glass slab, lycopodium powderchalk dust and a paper. Water normally forms a bubble shape when adhered to materials such as glass. The theory behind the liquid lens is based on the properties of one or more liquids to create magnifications within a small amount of space. The convex lens is floated in mercury, contained in a dish, with the marked face of the lens in contact with mercury. Recent developments in optofluidic lens technology university of. Liquid lenses use an electrowetting process to achieve superior autofocus capabilities. Liquid lens and various tuning methods request pdf. This can be a great solution for applications with varying object heights and working distances. The top substrate has an aperture which is sealed with a thin elastic. The lens itself is a sealed cell with water and oil inside. Publishers pdf, also known as version of record includes final page, issue and volume.