microprism


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microprism

[′mī·krə‚priz·əm]
(optics)
A usually circular area in the focusing screen of a camera viewfinder that is made up of tiny prisms and causes the image in the viewfinder to blur if the subject is out of focus.
References in periodicals archive ?
Delivery of triangular and rectangular microprism diaphragm foils for KGHM ZGR.
All have a fixed focusing screen with a fine-matte ring around the central microprism or split-image area.
Lin, "Highly uniformand monodisperse [beta]-NaY[F.sub.4]:[Ln.sup.3+] (Ln = Eu, Tb, Yb/Er, and Yb/Tm) hexagonal microprism crystals: hydrothermal synthesis and luminescent properties," Inorganic Chemistry, vol.
Lin, "Highly uniform and monodisperse [beta]-NaYF4:[Ln.sup.3+] (Ln = Eu, Tb, Yb/Er, and Yb/Tm) hexagonal microprism crystals: hydrothermal synthesis and luminescent properties," Inorganic Chemistry, vol.
Li, "Self-assembly of solid or tubular ZnO rods into twinning microprisms via a hydrothermal route," Journal of Alloys and Compounds, vol.
Its various optical designs include microprisms, directional lenticular ribs, and custom designs to achieve optimal performance.
A high number of patents relating to optical effects with microlenses or microprisms have been published in 2013 (45 documents).
Zhang, "Single-crystalline [Zn.sub.2]Sn[O.sub.4] hexangular microprisms: fabrication, characterization and optical properties," Solid State Communications, vol.
In this regard, there have been numerous efforts to improve light efficiency of the BLU with different shapes of the microstructures of the LGP, such as etched dots (most widely used shape) (1), (6), micropyramids (2), microprisms (3), (4), continuous microlenses (5), convex microlens arrays (MLAs) (6), and so on.
"This works by depositing microprisms of light-reflective, color crystal particles onto lashes for subtle yet striking color and luster," says Cheryl Vitali, executive vice president and general manager for the Revlon Global Brand Equity Group.
Pucker & Pout, a brush-on lip color, contains vitamins A, C and E, features SPF15 protection and contains color pigments and holographic microprisms that bend and wrap light around the contours of the wearer's lips.
SaveMed, under the full title of Microstructure secured and self-verifying medicines, is aimed at 'ensuring product pedigree and defending against illegal re-packing (by) the incorporation of diffractive gratings, random microstructures, micro-barcodes and contrast generating microprisms in steel tools.' It is a [pounds sterling]4.3m project involving seven commercial and research organisations, to which the EU is contributing [euro]3.14m under the security theme of the 7th R&D Framework.