immersion objective


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Related to immersion objective: Oil immersion objective

immersion objective

[ə′mər·zhən əb‚jek·tiv]
(optics)
A high-power microscope objective designed to work with the space between the objective and the cover glass over the object filled with an oil whose index of refraction is nearly the same as that of the objective and the cover glass, in order to reduce reflection losses and increase the index of refraction of the object space. Also known as immersion lens.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The two-sample Kolmogorov-Smirnov test suggested that the phase uncertainties are not from the same distribution when comparing the 20x objective lens in air to the 20x immersion objective lens in water and the 40x objective lens in air to the 40x immersion objective lens in water (i.e., all phase data comparison results rejected the null hypothesis with 95 % confidence), although comparing the height uncertainty, the Kolmogorov-Smirnov test suggests that, at lower hologram sample sizes, the height uncertainty may be from similar continuous distributions, (5) evidence of which can also be noted in a quantile-quantile plot of the 40x data (Fig.
"Resolution of morphologic detail adequate to permit reasonably reliable identification of parasites and discrimination among parasite species requires use of a 100X oil immersion objective," says Shapiro, who remains unconvinced about how well the new technology can reliably identify the presence of malaria, if at all.
The smears were graded using 100 x oil immersion objective as per RNTCP guidelines (1): Scanty = 1- 9 AFB in 100 oil immersion fields (field); 1 + = 10 - 99 AFB in 100 fields; 2+ = 1 to 9 AFB per field in at least 50 fields; 3+ = 10 or more AFB per field in at least 20 fields; Neg = no AFB in 100 fields.