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2. Eyepiece - Wikipedia

   en.wikipedia.org/wiki/Eyepiece

   The 4-element orthoscopic eyepiece consists of a plano-convex singlet eye lens and a cemented convex-convex triplet field lens achromatic field lens. This gives the eyepiece a nearly perfect image quality and good eye relief , but a narrow apparent field of view — about 40°–45°.

3. List of lens designs - Wikipedia

   en.wikipedia.org/wiki/List_of_lens_designs

   This list covers optical lens designs grouped by tasks or overall type. The field of optical lens designing has many variables including the function the lens or group of lenses have to perform, the limits of optical glass because of the index of refraction and dispersion properties, and design constraints including realistic lens element center and edge thicknesses, minimum and maximum air ...

4. Orthoscopy - Wikipedia

   en.wikipedia.org/wiki/Orthoscopy

   Abbe in 1880 [1] designed an orthoscopic eyepiece for stereoscopic microscopes which minimized distortion. The term was also used in stereoscopy by Heine [ 2 ] [ 3 ] for the condition when the perceived depth in a stereogram is the same as that in the actual view of the scene.

5. Ernst Leitz GmbH - Wikipedia

   en.wikipedia.org/wiki/Ernst_Leitz_GmbH

   Kolorimeter Leitz Wetzlar Trinovid 8×20 C binoculars expanded [1] Leitz compound monocular microscope. Germany. 1922. Perea-Borobio Collection. Carl Kellner, mechanic and self-taught mathematician, published his treatise Das orthoskopische Ocular, eine neu erfundene achromatische Linsencombination (The orthoscopic ocular, a newly invented achromatic lens combination) in 1849, describing a new ...

6. List of telescope parts and construction - Wikipedia

   en.wikipedia.org/wiki/List_of_telescope_parts...

   Field lens: A correcting lens placed just before the image plane of a telescope. [citation needed] Telecompressor or focal reducer: Optical element to decrease the telescope's focal length and magnification (usually by a fixed percentage) and widen the field of view, providing opposite effects of a Barlow lens.

7. How many times did The Beatles break up? - AOL

   www.aol.com/why-did-beatles-break-inside...

   Over the years, fans have pointed to different reasons why The Beatles broke up, but it seems that the band simply grew apart and no longer shared the same vision after eight years together.

8. Man Who Stabbed His Father 50 Times Reportedly Tells ... - AOL

   www.aol.com/man-stabbed-father-50-times...

   Jeffrey Goedde, 41, handed himself into the Jefferson County Sheriff’s Office on Wednesday, Dec. 18, according to court documents seen by PEOPLE

9. Subsidy Scorecards: Prairie View A & M University

   projects.huffingtonpost.com/projects/ncaa/...

   SOURCE: Integrated Postsecondary Education Data System, Prairie View A & M University (2014, 2013, 2012, 2011, 2010).Read our methodology here.. HuffPost and The Chronicle examined 201 public D-I schools from 2010-2014.