effective aperture

effective aperture

[ə¦fek·tiv ′ap·ə·chər]
(optics)
The diameter of the image of the aperture stop of an optical system, as viewed from the object.
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Tenders are invited for Electronic Theodlite Light Weight Aluminum Tripad Having 24 X Magnification, 32Mm Objective Aperture 4 Degree Resolving Power Or Similar Auto Level With Light Weight Alluminium Stand 5Mtrs Alluminium Staff Having 30M Magnification, 45Mm Effective Aperture 3Degree Resolving Power With Led Display And 14M Focusing Distance Or Similar.
automatic bilevel or multilevel switching or continuous dimming daylight harvesting control in primary daylight zones under restrictive conditions related to effective aperture and size of zone
however the point must be made that by doing so, the effective aperture of the reducing lens is increased, as the ray cone from the primary lens is converging and so by projecting the aperture of the reducing lens onto the primary lens, it will have increased.
The ATC prototype, called Star-9 due to the number and arrangement of apertures, uses multiple small telescope modules that yield a system with a much larger effective aperture.
The end of the cavity-heating region is considered as the blackbody effective aperture for referencing distances.
This will produce what amounts to a single antenna whose effective aperture is larger than Earth itself.
The practical, and very welcome, effect of this improvement is to make the effective aperture through which the bullet must pass to be detected much larger and easier to hit, especially at longer ranges.
automatic bi-level or multilevel switching or continuous dimming daylight harvesting control in primary daylight zones under restrictive conditions related to effective aperture and size of zone; and
In addition, Universal Display's TOLED technology can enhance visual display performance by increasing the effective aperture area of the display in comparison to conventional bottom-emitting AMOLEDs.