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Equations (21) to (24) derived here for a compound lens consisting of one
collecting- and one dispersing Jens arc generally valid for a compound lens
consisting of two single lenses (duplet). Example: The compound lens shown in
figure 80 ...
2
Natural philosophy. Treatise 5
A single lens whose focal length is equal to that of a compound lens, is called its
equivalent lens. The greater the focal length, the less is the convergent power of
a convex lens; and on the other hand, the less its focal length, the greater is its ...
3
The British Journal of Photography
But, before the present invention, no advantageous application of this type of
compound lens to photographic objectives has. to my knowledge, been either
made or deemed feasible. Such application is attained, in the first place, by
imparting ...
William Crookes, George Shadbolt, William Blanchard Bolton, 1897
4
Encyclopaedia Londinensis, or, Universal dictionary of arts, ...
Let AC be the compound lens; F.q its focal length for red rays; E» its focal length
forviolet rays. Then f—F □□/□□□ F : Eq; and pf mF pf rnF Ff — : — :: — I Ec;
hence Eo=,: — and Ei= q u q n J—F — "V'^ □ and, when E»=Ea, the red and
violet ...
5
Optics of the projector
However, the field covered is small, and it is little better than the homemade
compound lens, while costing much more. The compound lens is homemade
from two plano-convex lenses which you can purchase for a few cents from any
dealer ...
6
Introduction to Adaptive Lenses
To get a variable focal length, a compound lens is required. A compound lens is
a collection of at least two simple lenses which are arranged one after another
with a common axis. The compound lenses are commonly found in cameras and
...
Hongwen Ren, Shin-Tson Wu, 2012
7
Memoirs of the Royal Astronomical Society
i=->1- -:=i ~ a" . r' spherical aberration of the object-glassis corrected by that of the
compound lens, in the same manner as the chromatic aberration. If F be the focus
of the object-glass forcentral red rays, and f its focus .for marginal red rays, ...
Royal Astronomical Society, 1827
we have assumed a value of d greater than the truth, we can easily reduce the
consequent over-correction of the chromatic aberration, by gradually withdrawing
the compound lens from the object-glass, looking through the telescope at each ...
Royal Astronomical Society, 1827
9
Encyclopaedia Londinensis
Let A_C be the compound lens; Eq its focal length for red rays; Ev its focal length
forviolet rays. Thenf-F :f a: F : Eq; and a t p F but-T : fl-f :: 'il-i- : Ev; hence Eq: ,-f-,
and Ev: 9, n q n j-F F . WZWJHZJF; and, when EvzEq, the red and v1olet rays, ...
10
Light and Video Microscopy
The front and back focal lengths of the compound lens is given by the following
formulae: front focal length5 f1ðd2f2Þd2ðf11f2Þ back focal length5 f2 ðd2f 1Þ d2
ðf1 1f 2Þ When d50, the front and back focal lengths are equal, and the focal ...
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Liquid Crystal Compound Lens Eyed for 3-D Imaging
"Given the liquid-crystal flower's outward similarity to a compound lens, we were curious about its optical properties," said postdoctoral ... «Photonics.com, 五月 15»
Researchers Develop Liquid-Crystal-Based Compound Lenses that …
Finding a suitable compound lens under a microscope, the researchers put a test image, a glass slide with the letter "P" drawn on in marker, ... «Scicasts, 五月 15»
These compound lenses work like insect eyes
“Given the liquid crystal flower's outward similarity to a compound lens, we were curious about its optical properties,” says study co-leader ... «Futurity: Research News, 五月 15»
Penn scientists show how liquid crystals can form compound lenses
To make the lenses, the researchers spread the liquid crystal on a sheet of micropillars. Finding a suitable compound lens under a microscope, ... «Penn Current, 五月 15»
Schott's glass
Abbé developed a new compound lens with the glass, the apochromat, which performed at the theoretical limit. The new partnership was now ... «Royal Society of Chemistry, 四月 15»
The Photograph and Australia review – a superb study of national …
Matched to that room is the Compound Lens Project, a collaborative work by Patrick Pound and Rowan McNaught that puts images found on ... «The Guardian, 三月 15»
Downtown Randall Brown: Benny Smith pulls for the home team in …
Meanwhile, over on campus the exhibit “Compound Lens” at the Ewing Gallery features the photographic and video work of 19 UT alumni and ... «Knoxville News Sentinel, 一月 15»
A guide to fine art exhibits, theater and more
Ewing Gallery of Art and Architecture 1715 Volunteer Blvd. "Compound Lens" photos/video by former students of Baldwin Lee; through Feb. «Knoxville News Sentinel, 一月 15»
"Compound Lens" shows photographers' works as tribute to Baldwin …
"Compound Lens" shows photographers' works as tribute to Baldwin Lee. Amy McRary. 8:56 AM, Jan 10, 2015. 9:05 AM, Jan 11, 2015. Previous Next. «Knoxville News Sentinel, 一月 15»
Five Things to Do Now That Football Season Is Over
Housed in the Art and Architecture building, the Ewing Gallery's current exhibition, Compound Lens, features the photographic and video work ... «Tennessee Today, 一月 15»
