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Figures (7)

Fig. 1
Fig. 1

Spherical surface beam splitter can be used in a Schmidt-type mirror objective to split the converging image-forming beam so that two images are formed. The small aberrations introduced can be corrected by a compensator plate located at or near the aperture stop.

Fig. 2
Fig. 2

Docking sensor system determines radial misalignment, angular misalignment, and range.

Fig. 3
Fig. 3

Target pattern consists of rings of alternating high and low reflectivity and a central section where reflectivity varies with the angle of incidence but not with position.

Fig. 4
Fig. 4

In-line holographic microscopy system includes a construction or recording system and a reconstruction or playback system. Both systems use 1-W argon-ion lasers operating at a wavelength of 514.5 nm, TEM00 mode, with a coherence length of ∼1 m.

Fig. 5
Fig. 5

Fiber-optics temperature sensor is free of electromagnetic interference. The sensing element can be made quite small, enhancing its use in confined areas.

Fig. 6
Fig. 6

Power/current characteristic of an oxide-stripe laser device at room temperature shows a threshold current of ∼220 mA for cw operation.

Fig. 7
Fig. 7

Monitoring crystal growth is easier and more effective with this video imaging and control system than with earlier systems employing microscopes and separate control electronics. The camera produces an image on a display screen, and operator-directed circuits for measurement and control adjust crystal-growth parameters.

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