Chapter 2.1 - Focusing Fundamentals
... devices to help them achieve good focus. Instead of a ground glass screen, a CCD camera displays its results right on your computer screen. This means you aren’t limited to the available light. You can collect photons over time while you are focusing, and this is a definite advantage over film. Stil ...
... devices to help them achieve good focus. Instead of a ground glass screen, a CCD camera displays its results right on your computer screen. This means you aren’t limited to the available light. You can collect photons over time while you are focusing, and this is a definite advantage over film. Stil ...
Parfocal and Critical Focus Zone
... differences in focus for this system are within the CFZ. The word "system" is used because these variations may include differences in filter thickness. This is where it becomes conceptually complicated, because FocusMax is predicting the best focal point (i.e. the center of the CFZ) by projecting a ...
... differences in focus for this system are within the CFZ. The word "system" is used because these variations may include differences in filter thickness. This is where it becomes conceptually complicated, because FocusMax is predicting the best focal point (i.e. the center of the CFZ) by projecting a ...
microscope instructions ppt
... Setting up Köhler illumination (focusing the condenser) Now look through the oculars and slowly lower the condenser until you see a sharp outline of the field diaphragm (it looks like a circle-shaped polygon.) ...
... Setting up Köhler illumination (focusing the condenser) Now look through the oculars and slowly lower the condenser until you see a sharp outline of the field diaphragm (it looks like a circle-shaped polygon.) ...
Exercise 13 Geometrical and Technical Optics WS 2013/2014
... In this case the aberrations for 40 mm beam diameter are (again first surface at z=-6 mm and second surface at z=0 mm): =587.6 nm: z_Focus: 92.981 mm, spot radius: 0.161 mm, P/V wave aberrations: 20.57 =486.1 nm: z_Focus: 91.955 mm, spot radius: 0.162 mm, P/V wave aberrations: 25.18 =656.3 nm ...
... In this case the aberrations for 40 mm beam diameter are (again first surface at z=-6 mm and second surface at z=0 mm): =587.6 nm: z_Focus: 92.981 mm, spot radius: 0.161 mm, P/V wave aberrations: 20.57 =486.1 nm: z_Focus: 91.955 mm, spot radius: 0.162 mm, P/V wave aberrations: 25.18 =656.3 nm ...
Optics
... the f-stop for both is f/2. To control the light that reaches the film, an iris in front of the lens can reduce the effective diameter of the lens, therefore letting less light in. F-stop = Focal Length / diameter created by the iris. If a lens with 2 inch diameter has an iris adjusted to a 1/ ...
... the f-stop for both is f/2. To control the light that reaches the film, an iris in front of the lens can reduce the effective diameter of the lens, therefore letting less light in. F-stop = Focal Length / diameter created by the iris. If a lens with 2 inch diameter has an iris adjusted to a 1/ ...