Abakus Fixed Focal Length Small Lenses

Download pdf Brochure of Small Lenses (4.2MB)

NEW from Abakus

High Impact Borescope lens

This lens was originally designed to fit right in the centre of the Bulls-eye of an archery target, so that arrows could be "watched" coming straight towards the target. Any lens in this position of potential high impact had to be designed to very high specification to withstand high energy impact.

The shape, size and form of the front of the lens is revolutionary. The very front element is tiny, being just 2mm in diameter and yet is incredibly powerful in optical terms. This and the rest of the front optical assemblage are housed in metal shaped like a jet fighter nose cone, coming down to a point of only 2.5mm. The tiny front lens is protected by an optical window made from sapphire for additional strength and protection. It has a wide 96° angle of view. Images have remarkable edge-to-edge sharpness and flat field. The main body of the borescope is made from high quality stainless steel and this part of the lens enables a high degree of flexibility in terms of length. It may be as short as 90mm and increased in units of 90mm to, for example, the 230mm length that was used for the archery target.

Focal length	4mm
Picture width/diagonal	80°/92°
Length	50mm plus 90mm units
Diameter Front /barrel	2.5/ 12mm
Rear external mount	C-mount
Relative Aperture	f/4 to f16
Bend angle	Straight, 90° to order

Abakus Borescope lenses

The central barrel shaped "borescope" part of the lens is 20mm diameter. This part of the lens relays the image back towards the fully closing iris which enables use in differing light levels, then to the internal filter holder, focus movement and rotatable C-mount, then finally the camera. The sophisticated Abakus design achieves High Definition quality when used on suitable high quality HD cameras such as the Iconix HD-RH1F, Hitachi KP-D20BP, Ikegami HDL-20 & TV Skyline HD1100.

Abakus Borescope Specification

Picture of bees taken with Abakus Borescope

Abakus Fixed Focal Length Lenses for 2/3" single-chip cameras in rugged situations

Top quality optics throughout

The above data is for when lenses are used with 2/3" C or D-mount cameras for which they were designed.

An Abakus D-mount to C-mount adapter is available. Please note that they are not suitable for 3-chip cameras incorporating a beam-splitting prism because there is not enough back focus for use on this type of camera.

Abakus Anamorphic Micro Lens

• Tiny size: The small size of the lens (10.5 x 12 mm) ensures discrete use in a variety of situations including in sporting such as all types of sporting helmets used for cricket, motor-bikes, racing-cars, hockey, football, baseball, skiing etc.

• Front protective cap with sapphire window: The protective front cap, provided as standard, for the lens is made of sapphire which can be wiped clean without scratching i.e. with almost anything except diamond! It has a flush finish and can be locked in position.

• Rugged 3 position fixed iris: To enable the lens to be used in a variety different of light levels a fixed iris is provided with three positions for low, medium and high light levels

• 16x9 optics direct from 4x3 camera: This micro lens enables tiny 1/4" 4x3 CCD colour board cameras such as the PC-2005, to take 16x9 anamorphic pictures directly, with no need for post production re-formatting.

• Supplied with or without colour board camera: The lens is ideal for live coverage where 16x9 format is required. Use of this lens saves time and money in post production.

Specification of the Abakus Anamorphic Micro Lens

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