University College Dublin (UCD) spin-out company LirOptic is the only Irish company to make it to round eight of the Luminate accelerator programme in New York. LirOptic is seeking to raise €3m ...

A complimentary lens cloth, anti-scratch coating and UV protection come with all orders. Zenni Optical offers an array of eyeglasses with prices starting at just under $7. From clear frames to ...

Main Camera Quad 50 MP, f/1.9 or f/4.0, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS 50 MP, f/1.8, 75mm (telephoto), 1/2.51", 0.7µm, dual pixel PDAF, OIS, 3 ...

If you walked into Charles Herzog’s classroom last spring, you’d have seen a peculiarly modern sight: middle schoolers all staring into virtual-reality gear. Their bodies, officially, were at ...

In this paper, the optical characteristics of an ultrasound gel lens were evaluated quantitatively by expanding the wavefront of the transmitted light in terms of the Zernike polynomial. It was ...

Abstract: In this paper, a hybrid quasi-optic and analogue beamforming approach is presented, involving an elliptical lens with an active focal plane array at D-band (110-170 GHz). Beamwidth ...

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\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.

The convex optical lens allows an even distribution of the light, no spot. The case is made of fire-proof and UV protection PC material. The frame is made of aluminum. These, along with two built-in ...