Mirion Technologies R930 User Manual

Varifocal 3:1 Lens Body

Features

• Compact

• Close focus

• 3:1 Zoom lens

• Non-browning optics

R930

REES

• Remotely driven

Applications

• Underwater surveillance

• Fuel monitoring

• Reactor inspection

• Tube inspection

• Robotics and manipulator
surveillance

• Serial number verification

Developed for use with Rees R93 Cameras the R930VHV Zoom Lens Body provides a
highly compact zoom facility for close-up viewing tasks in nuclear environments. The optic
fitted to the R930VHV is a non-browning 8 to 24mm, f/2.8 zoom lens with a close focus
ability which is ideal for inspection tasks. To aid deployment the stainless steel body is
submersible to 60m (197’) and retains the same overall diameter as the R93.

The iris, zoom and macro functions are remotely driven via motors in the R93 camera.
However, the zoom lens is used in a varifocal mode. While the lens does not 'track' like a
conventional zoom lens, it can be pre-set to 'track' at a set working distance. (In practice
most users zoom the lens in or out to obtain the desired field of view and then use the
macro focus control on an R93 Mk 3 local CCU to adjust focus).

Fitting the R930VHV lens body to the camera is very simple. Unscrewing the camera rear
locking ring allows the existing body to be removed and the R930VHV can then be fitted
over the camera capsule and dual 'O' rings. Once the locking ring is tightened the camera
assembly is waterproof and ready to use.

Imaging & Sensing Technology Corporation

Specifications and Performance

REES R930

Dimensions

Camera Type (R93)

Length with camera .........................315mm (12.4")

Weight with camera ........................2kg (4.4 lb)

Diameter .......................................... 40.5mm (1.6")

Viewing Angles (R93)

Viewing Angle Wide (F8mm) Tele (F24mm)

In air In water In air In water

Horizontal 56° 41° 20° 15°

Vertical 41° 31° 15° 11°

Diagonal 66° 48° 26° 19°

Minimum and Maximum Focus Ranges

The lens tracking can be set anywhere between the limits shown below.
To maintain lens tracking the lens focus should be preset to the expected
camera to subject viewing distance. The distance in water is 1.33 times
the distance in air. For navigation and general viewing the macro focus
function can be used to bring the scene into focus.

General Optical Performance

Lens focus range in air .................... 50mm (2.0”) to infinity

Iris range ..........................................f/2.8 to f/16

Spectral waveband ..........................500nm to 750nm

Vignetting ........................................ @ 8mm: <25%

@ 24mm: <40%

Horizontal resolution ....................... 650 tv lines per picture

Environment

Temperature..................................... Operating: 0° to 40°C (32°F to 104°F)

Storage: -10° to 60°C 14°F to 140°F)

Radiation..........................................>1MGy (H

2O) [Co60] (>10

8

rads)

Viewing Distance Wide (F8mm) Tele (F24mm)

Macro Setting Back Forward Back Forward

User preset lens 50mm 20mm 50mm
focus near (50mm, 2")

User preset lens 10mm 150mm
far (infinity) (0.4")

0

(2") (0.8") (2")

infinity

(6")

infinity

Imaging and Sensing Technology Corporation

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