Coin Operated Binoculars

International Notes of Coin Operated Binoculars

2008-06-20T04:35:00.000-07:00

In both the Mark I and the Mark III, the coin chutes are designed to fit the US twenty-five cent piece. Vertical coin chutes can be removed for free play operation. Custom coin chutes are available for foreign coins or tokens. Sample coins are required for customization.

Shipping & handling costs, duties, insurance and any applicable taxes are the responsibility of the purchaser. Freight costs depend upon shipping method, quantity of units shipped, and destination. We will supply estimated quotes upon request. A certificate of origin will accompany the shipment when required. All orders are F.O.B. Fairhope, Alabama, USA, and must be prepaid.

Mounting and maintenance instructions are shipped with the units. Shipping time is approximately 2-4 weeks from receipt of a confirmed purchase order and full payment. Box size and weight for shipping may vary, depending on number of base steps and type (full, half or handicap accessable base) shipped. The following is for one Mark I or one Mark III with full base:

Mark I Head: (27"X14"X18") 40 Lbs.
Mark III Viewer Head: same size box 50 Lbs.
Full Base Step: (14"X31"X31") 30 Lbs.
Pipe: (45"X9"X9") 15 Lbs.

MEASURING BINOCULAR MAGNIFICATION USING A DIGITAL CAMERA

2008-05-17T16:14:00.000-07:00

Good uck everyone!

History of Binocular

2008-05-17T15:57:00.000-07:00

Man has been experimenting with glass since its advent sometime around 3500 B.C. These experiments soon became known for their ocular implications. The designs of early optical instruments, like the telescope, were not recorded. It is assumed that these instruments were studied and perfected by Galileo Galilei. Early binoculars were actually called binocular telescopes, and are thought to be based on Galileo's discoveries and designs of prisms.

Early telescopic lenses were full of bubbles and other imperfections. They were also slightly green due to the iron content in the glass. Polishing techniques were crude, and although lenses were of good quality in the center, the peripheral shape was poor resulting in a restricted aperture. As telescopes were improved, binoculars evolved. The first patent application for binocular telescopes was filed early in the seventeenth century by Jan Lippershey in present day Holland. Lippershey primarily used quartz crystal, which is hard to manipulate. The first hand-held binocular originated in 1702 with Johann Zahn's small binocular of two tubes with a lithe connection.

A patent application submitted in 1854 by Ignatio Porro began the use of the modern prism binocular called the Porro prism erecting system. This optical system consisted of an objective lens and ocular lens (eyepiece) with two facing, right angle prisms arranged to invert and correct the orientation of the image. The two most commonly used prism systems are the porro prism and the roof prism design. The roof system uses prisms positioned one over the other resulting in a more compact design.

An other major breakthrough occurred in 1894 when Carl Zeiss, a German optical specialist, developed binoculars with convex lenses and delta prisms to correct the inverted image. In a porro design, the light is bent in a "Z" shape before reaching the eye, allowing the distance between the eyepiece and the objective lens to be compacted. This enables the size and weight of binoculars to be reduced.

Reductions in the weight of the binoculars occurred with the use of aluminum or polycarbonate housings instead of the heavier metal alloys used in pre-civil war binoculars. Performance of smaller and larger binoculars has improved with the introduction of coatings to render the lenses non-reflective and reduce the amount of scattered light. The quality of prisms has also improved over the years, resulting in a reduction of the bubbling effect of optical glass. In the early 1970s, nitrogen filled, waterproof binoculars were developed. A decade later the arrival of infrared transmitters capable of seeing in the dark further transformed binocular technology. Variable magnification models were also developed allowing the user to adjust the level of magnification.

Leviathan Series (Coin Operated Binoculars)

2008-03-15T16:55:00.000-07:00

This unique coin operated high-powered binocular comes complete with its own pedestal and base.

Available in a choice of 25x or 40x magnification these superb long distance observation binoculars give outstanding optical performance and are pre-focused to infinity for instant sharp vision and ease of use.
The large 100mm objective lenses guarantee tremendous light gathering power (particularly on the 25 times) and the multicoated porro prism design is virtually free of chromatic aberration.
The coin or token operation can be powered by 220 or 110 volts mains or by the 12 volt rechargeable battery power pack.
The mechanism is fitted with a 3-position time lapse setting or total override of the shutter for non-chargeable use.