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Full Article | PDF Article**Applied Optics**- Vol. 17,
- Issue 8,
- pp. 1161-1162
- (1978)
- •doi: 10.1364/AO.17.001161

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- L. Beiser, in Laser Applications, M. Ross, Ed. (Academic, New York, 1974), Vol 2, p. 53.

- This nomenclature is consistent with that in Ref. 1 in which Rs and r form a design parameter in the merit factor equation m = (Rs/r)/4F2λ2 and the scanner geometry equation Rs/r = cosπ/n + 2F sinπ/n, in which n is the number of scanner facets and F = f/D.

- Operation in convergent light is typical of postobjective scan.

- In the underilluminated case, only a small fraction of the facet width is active as Do. The scan fulcrum shifts effectively to the facet surface, allowing the resolution to be expressed directly by Eq. (1).

L. Beiser, in Laser Applications, M. Ross, Ed. (Academic, New York, 1974), Vol 2, p. 53.

L. Beiser, in Laser Applications, M. Ross, Ed. (Academic, New York, 1974), Vol 2, p. 53.

This nomenclature is consistent with that in Ref. 1 in which Rs and r form a design parameter in the merit factor equation m = (Rs/r)/4F2λ2 and the scanner geometry equation Rs/r = cosπ/n + 2F sinπ/n, in which n is the number of scanner facets and F = f/D.

Operation in convergent light is typical of postobjective scan.

In the underilluminated case, only a small fraction of the facet width is active as Do. The scan fulcrum shifts effectively to the facet surface, allowing the resolution to be expressed directly by Eq. (1).

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Overilluminated scanner of aperture width

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$$N=\frac{\theta {D}_{o}}{a\mathrm{\lambda}},$$

$${N}_{s}=S/\delta ,$$

$$\frac{{D}_{o}}{D}=\frac{{R}_{s}}{f}=1+\frac{r}{f}.$$

$$N=\frac{\theta D}{a\mathrm{\lambda}}\left(1+\frac{r}{f}\right)$$

$$=\frac{\theta D}{a\mathrm{\lambda}}+\frac{\theta Dr}{a\mathrm{\lambda}f}.$$

$$N=\frac{\theta D}{a\mathrm{\lambda}}+\frac{SD}{a\mathrm{\lambda}f}$$

$$=\frac{\theta D}{a\mathrm{\lambda}}+\frac{S}{\delta}$$

$$={N}_{\theta}+{N}_{s},$$

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