58 Main Street, Sturbridge, MA 01566
Phone: (508) 347-2009     e-mail: jbv@jbvoptical.com


JBV's High Quality Optics in Amphibico's Underwater Camera Systems

Amphibico's 2nd Generation, state-of-the-art underwater camera systems feature full zoom capability, achromatic color correction, and employ high quality Aspheric glass lenses designed by Dr. Paul Remijan, and realized by JBV Optical Products Company's expertise. Read about these superior quality lenses below...


The New Aspheric AWA-5913

The new aspheric wide angle adapter delivers distortion-free wide angle images while maintaining zoom capability for high resolution close-ups. The formation of high quality images in both air and water provides the convenience of dual air and underwater operation. Angular magnification is nearly constant in both air and water allowing for “split images” with minimum shear along the air-water boundary.

COMPATIBILITY

1/3 inch CCD, operating in NTSC or PAL format zoom lens
min fl: 5.9mm
min f/#: 1.6


OPTICAL FEATURES

Advanced optical fabrication technology, special high index glasses and extensive multi-configuration computer optimization have been used to design and manufacture the new aspheric AWA-5913 adapter. The lens produces sharp, distortion free images with vivid colors. Image quality is consistent over the entire field of view for all object distances and zoom settings.

DISTORTION FREE

A deep concave aspheric corrector forms a flat image at the CCD image sensor. Barrel distortion found in non-aspheric adapters is negligible. Distortion is corrected for both near and distant objects framed at any zoom setting.


COLOR CORRECTED

An achromatic doublet fabricated from special high index glasses provides excellent color correction over the entire field of view at all magnifications.

USE IN AIR OR WATER

Nearly constant angular magnification in air and water is achieved by using a highly curved, non-concentric glass dome. Variation of angular magnification in air versus water ranges from 5% for near objects at 5.9 mm fl to 13% for distant objects at 59 mm fl. Split images with as little as 5% shear at the air-water interface are possible.

FULL ZOOM CAPABILITY

A focus corrector group compensates for the water-dome or air-dome interface which naturally acts as a negative lens to limit focusing. Objects as close as 115 mm from the dome vertex , (230 mm from dome vertex in water), can be brought into clear focus at full zoom, 59 mm fl.

HIGH RESOLUTION

High polychromatic MTF is maintained over the entire field by compensating for the astigmatism introduced by the distortion correcting aspheric element.

DURABLE OPTICAL COATINGS

All optical surfaces are (H)igh (E)fficiency (B)road (B)and (A)nti-(R)eflection, (HEBBAR), coated. The external glass dome surface has a proprietary, seawater resistant, HEBBAR hard coating which reduces scratches and allows aggressive cleaning to remove seawater residue.

The formidable optical expertise of Dr. Paul Remijan and JBV Optical Products Company has been employed in the medical, military and industrial sectors for years. JBV Optical offers you the opportunity to have this same level of impeccable quality focused on your specific application. We welcome the opportunity to provide you quotes on your optical requirements. JBV's design and engineering services are light-years ahead.

AWA-5913 Optical Specifications
Click here to view graphs of:
Field Curvature/Distortion, & Grid Distortion

AWA-5913 Specifications with Sony 3 CCD Digital Handycam FL = 5.9 mm FL = 59 mm
Water Air Water Air
Minimum object distance (M.O.D.) from Dome Vertex 200* mm 200* mm 230 mm 115 mm
Maximum distortion for object @ M.O.D <2.7% <3.0% <0.01% <0.05%
Maximum distortion for object at Infinity <2.8% <3.3% <0.02% <0.02%
Object fields for 1/3" CCD format NTSC PAL NTSC PAL NTSC PAL NTSC PAL
Object dimensions at 2 meters from Dome Vertex (mm) 3010
X
2257
2942
X
2668
3278
X
2905
3203
X
2905
276 X 207 mm 270
X
245
315
X
236
308
X
279
Object dimensions at 250 mm from dome vertex (mm) 486
X
365
475
X
431
520
X
390
508
X
461
43
X
32
42
X
38 mm
48
X
36
46
X
42
Minimum angular field of view referenced to entrance pupil (Degrees) 71.5
X
56.7
70.3
X
65.1
76.4
X
61.1
75.1
X
69.8
7.6 X 5.7 7.5
X
6.8
8.7
X
6.6
8.5
X
7.7

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