The position of the rotational axes of the shafts is detected using a plano-convex lens connected to the shaft. An autocollimator detects the plane and the centre of curvature of the plano-convex lens. The position of reflected image is detected in the focal plane of the autocollimator, ...
Yep, I am not one to move the focus point around either. I focus and recompose if necessary, so I like my focus box in the middle of the lens. Me too, but I'm trying to use the joystick more. I'm aware that with field curvature and particularly with a wide aperture, focus/recom...
Single-channel deformable mirrors with a controllable curvature of the reflecting surface are analysed. The advantages of bimorph deformable optics over mi... OB Vyskubenko,PI Kapustin,IS Kolokolov,... - 《Quantum Electronics》 被引量: 18发表: 2003年 Two-Axis MEMS Lens Alignment System for Fr...
Auto-refraction, trial lens to find out the accurate refraction and eyesight. Use computerised machine to scan and measure the corneal shape, thickness and curvature of your eyes. Check the back of your eye Dilation ofpupils to check the retina After pupil dilatation: Your vision will be blurry...
Each building has a core areaa semipublic, curved gallery that follows the curvature of the main façadethat integrates the public interior space with the landscape of the Jasmine Gardens around the building and further with the Mahangzhou island natural reserve in front of the Centre. Ceramic ...
Each building has a core area—a semi-public, curved gallery that follows the curvature of the main façade—that integrates the public interior space with the landscape of the Jasmine Gardens around the building and further with the Mahangzhou island nature reserve in front of the Center. ...
Suffer from moderate to high myopia (nearsightedness) of -3.00 to -20.00 diopters. Suffer from hyperopia up to +12.00 (long-sightedness) diopters Suffer from astigmatism up to -5.00 dioptres Are not good candidates for LASIK because they have thin corneas or abnormal corneal curvature ...
for any position of source and detector on the Euler cradle, the collimation axis 18 of the source 13 and the receiving axis 19 of the detector 14 are direct towards a point 20, that is the diffractometer centre (that, for example, can match with the curvature centre of the Euler cradle...
The position of the rotational axes of the shafts is detected using a plano-convex lens connected to the shaft. An autocollimator detects the plane and the centre of curvature of the plano-convex lens. The position of reflected image is detected in the focal plane of the autocollimator, ...
The lens has a central, relatively thick and optically stable portion surrounded by a limbal-scleral edge portion. The edge portion (2) is substantially thinner than the central portion (1) and the inside surface (3) of the lens is of uniform curvature. The edge portion may have parallel ...