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Optičke komponente visokog kvaliteta
Kvalitet prizmi i sočiva predstavlja najvažniji uslov za dobijanje slika izuzetnog kvaliteta, oštrine, kontrasta i osvetljenja. OLYMPUS je svetski priznata robna marka i sinonim za preciznu optiku.
Želite da saznate šta se krije iza svih onih zbunjujućih tehničkih izraza i skraćenica? Samo izaberite oblast koja vas zanima i pročitajte. Odgovore možete i da preuzmete i kasnije čitate uz pomoć programa Adobe Acrobat Reader. |
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Dvogledi od A do Š
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A
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Angle of view/Field of view (Ugao gledanja/Polje preglednosti)
Ugao gledanja se meri u stepenima i pokazuje širinu oblasti koju ćete moći da vidite kroz dvogled. Ova mera je takođe poznata kao Polje preglednosti i može se izraziti kao širina oblasti gledanja, izražena u metrima, kada se gleda sa udaljenosti od 1000 metara. Šire polje preglednsoti olakšava posmatranje sportskih događaja, divljine i drugih pokretnih subjekata. Na primer, sa dvogledom 8x25 PC I, polje preglednsoti iznosi 105 metara na udaljenosti od 1000 metara, a sa 7x35 DPS I ova veličina je 162 metra sa iste udaljenosti.
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Aspherical lenses (Asferična sočiva)
| Precizno obrađena asferični elementi sočiva sprečavaju distorziju i omogućavaju prikaz realističnih i svetlih slika sa oštrim konturama. Tehnologija asferičnih sočiva koristi se u velikom broju OLYMPUS dvogleda. |
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B
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BaK-4 prisms and lenses (BAK-4 prizme i sočiva)
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Precizno obrađene prizme i sočiva napravljeni od stakla obogaćenog barijumom (BaK-4) koje pojačava svetlost i obezbeđuje jasan pregled do same ivice vidnog polja. OLYMPUS nudi široku paletu dvogleda visokog kvaliteta sa BaK-4 prizmama. |
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C
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Coating (Premaz)
Tanak sloj supstance koji se, obično isparavanjem, nanosi na površinu sočiva radi smanjenja prelamanja i boljeg prenošenja svetlosti.
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Contrast (Kontrast)
Razlika u intenzitetu između najsvetlije i najtamnije slike viđene kroz optički sistem.
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D
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Diopter adjustment (Korekcija dioptrije)
Svi OLYMPUS dvogledi poseduju centralno postavljen točkić za fokusiranje, kao i odvojene mehanizme za korekciju dioptrije na okularima. Ovo pojedinačno podešavanje omogućava korisnicima da naprave korekcije koje odgovaraju razlici u dioptriji na levom i desnom oku i tako dobiju sliku čija oštrina odgovara pojedinačnom oku.
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De-alignment
Znak da sočiva više ne stoje precizno na svojim ležištima, što umanjuje kvalitet slike.
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E
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Exit pupil size
Exit pupil size refers to the diameter of the image that emerges from the eyepiece. The larger the image, the greater your ability to see in low-light situations. Exit pupil size can be determined by dividing the diameter of the objective lens by the magnification. This gives you the size of the exit pupil in millimetres. An exit pupil size of 2 or 3 millimetres is sufficient for viewing subjects in bright light, but if low-light performance is an issue, look for a binocular with an exit pupil size of 5-7 millimetres.
In case of 8x42 binoculars: 42/8 = 5.3 . exit pupil = 5.3 mm
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Eye Relief and adjustable Eyepieces
This describes the distance from the eyepiece to the surface of the eye where the full image can be viewed. If you wear glasses, it is best to choose a pair of binoculars with long eye relief. Adjustable eyepieces can be twisted up and down to further enhance comfortable viewing .
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F
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Fixed focus
Optički instrument koji nema sposobnost promene fokusa.
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Fixed power
A binocular scope with a single magnification setting.
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H
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HD (High Definition) Glass or ED (Extra-low Dispersion) Glass
Optical glass processed to greatly reduce aberration and provide better color reproduction.
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L
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Lens
One or more pieces of optical glass with surfaces curved to converge or diverge transmitted light rays.
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Lenses
Some Olympus binoculars feature an Extra Low Dispersion (ED) glass lens element. This reduces chromatic aberration, a common problem at high magnification, to produce sharp, clear images. Other Olympus models contain an aspherical glass lens element. This also provides an extremely high degree of optical resolution, reducing distortion.
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Lens coatings
A variety of coatings can be applied to the lenses to reduce reflection and enhance light transmission. The more coatings, and the greater the number of lenses coated the better the image will be.
Most of the OLYMPUS binoculars use multi-coated lenses which prevent light and sharpness loss caused by reflections.
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M
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Magnification
Magnification refers to the apparent enlargement of the object being viewed. If you are viewing an object 1000 metres away, it will appear as if the object is only 100 metres away.
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O
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Objective lens diameter
The size of the objective (front) lens is given in millimetres and is an important measure of binocular performance. While larger lenses generally offer greater light-gathering power for a brighter view and better image detail, they do add to the size and weight of the binoculars.
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P
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Parallax
An optical illusion that causes a viewed image to apparently change position as the viewer's eye moves to either side of the eyepiece.
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Prisms
The prisms in the high-performance binoculars are coated to preserve brightness and image detail. They are ground from BaK-4, a type of optical glass that refracts very little light for great image clarity. Two different types of prism are employed. Porro-prism binoculars feature an off-set barrel design. The wide space of the objective lenses enhances the perspective by giving more depth of view and creates an impression of more three dimensional images. Because of this, the porro prisms binoculars are usually slightly bigger than roof prisms models. A roof-prism system reduces the amount of space needed by directing light through a smaller area, which also makes the binoculars lighter and more compact.
Roof-Prism Binoculars: EXWP I, WP I, RC I Porro-Prism Binoculars: EXPS I, DPS I, ZOOM PC I, PC I, DPC I
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R
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Relative brightness
Directly related to the exit pupil size, this also indicates how well binoculars will perform in low-light situations. The relative brightness index is equal to the square of the exit pupil size. A high number means better viewing in low light conditions.
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T
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Twilight factor
A unit of optical comparison calculated by multiplying magnification by objective lens diameter, and taking the square root of the product. The greater the twilight factor, the better the binocular can provide quality viewing under reduced light conditions.
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U
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UV Protection
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All OLYMPUS binoculars provide protection against harmful UV rays as they use special coatings or lenses. |
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V
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Variable power
Magnification that can be adjusted.
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W
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Wide angle
Wide angle field of view allows to spot fast moving objects.
10 x 50 DPS I, 8 x 40 DPS I, 7 x 35 DPS I have 30 % wider view.
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10 x 50 DPS I |
8 x 40 DPS I |
7 x 35 DPS I |
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Z
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Zoom
OLYMPUS offers binoculars with a zoom function that ranges from 8–16x to 10–30x magnification.
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