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Lenses - Page 67

23X LENS ASSEMBLY - MICROFICHE PROJECTION?

 

 

 

 

We think these were made for microfiche projection,

 

 

 

 

but not certain. Beautiful brand new lens assembly in

 

 

the original packaging! Barrel is 34mm long x 28mm OD

 

 

with groove about 20mm from the front. Clearly made

 

 

to go into some instrument and be held in place using

 

 

the groove. Front element is 14mm diameter and back

 

 

element is 10mm. Multi-element, with coated optics.

 

 

Marked "Mag. 23X" Gloss black-enameled aluminum barrel. Makes a nice

color corrected magnifier, but has a narrow field of view.

 

 

L3204

$4.00

 

 

 

 

D.O. INDUSTRIES 50MM F/4.5 ENLARGER LENS

 

 

 

 

Unused in original box with front and back lens caps.

 

 

 

 

Iris operates with click stops from f/4.5 TO f/22.

 

 

50mm focal length. We've found them selling used for

 

 

up to $40.

 

 

 

 

L3221

$10.00

 

 

 

 

 

 

 

 

MTD NEGATIVE AIR SPACED DOUBLET, 15MM DIA X -667MM FL Coated air spaced doublet, in a threaded mount. Clear front lens diameter is 15mm, clear back lens is 10mm.

Mount is 25mm diameter by 17mm long. Focal length is -667mm. Unused

L3254 $5.75

CYLINDRICAL LENS, PCX - 4" LONG X 1/8" WIDE X 3MM FL Cylindrical lenses (also called astigmatic lenses) have at least one surface that is formed like a portion of a cylinder. They are used in rangefinders to produce astigmatism, or the stretching of a point of light into a line. Plano-convex cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications. These

cylindrical lenses measure 4" long x 1/8" wide x 1/16" deep, with polished concave top and flat base surfaces, and ground ends. The edges along the length may have some slight roughness due to their thinness. Focal length is 3mm. A great find for the optics hobbyist or experimenter!

L3289 $4.00 or 5 for $15.00

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Image 69
Tasco 1575 manual L3204 $4.00, Industries 50MM F/4.5 Enlarger Lens, L3221 $10.00, L3254 $5.75, L3289 $4.00 or 5 for $15.00

1575 specifications

The Tasco 1575 is a high-quality spotting scope designed for outdoor enthusiasts, birdwatchers, and hunters who seek superior optics and performance. This versatile instrument is engineered with advanced technologies and precision manufacturing that make it a standout choice in the field of optical equipment.

One of the main features of the Tasco 1575 is its powerful 15-75x magnification capability. This wide range allows users to zoom in on distant subjects with remarkable clarity, making it ideal for observing wildlife or surveying landscapes. The scope is equipped with a superior quality objective lens, which not only enhances light transmission but also offers exceptional brightness and color fidelity. This ensures that users can enjoy crisp, detailed images even in low-light conditions.

The Tasco 1575 is also designed with a durable and robust construction. Its waterproof and fog-proof design makes it suitable for use in various weather conditions, allowing users to focus solely on their observations without worrying about equipment failure. The rubberized exterior provides a secure grip and added protection against impacts, ensuring that the scope can withstand the rigors of outdoor adventures.

In terms of portability, the Tasco 1575 is relatively lightweight, making it easy to carry during long excursions. Additionally, it comes with a comfortable tripod, providing stability for prolonged viewing sessions. This feature is particularly beneficial for spotting distant details that require steady observation.

One of the key technologies integrated into the Tasco 1575 is its multi-coated optics. This technology minimizes glare and maximizes light transmission, resulting in sharp images with minimal distortion. The eyepiece features a comfortable design that accommodates users wearing glasses, ensuring a pleasant viewing experience for all.

Overall, the Tasco 1575 combines high magnification with durable construction and advanced optics, making it an excellent choice for users seeking a reliable spotting scope for various outdoor applications. Whether for leisurely birdwatching, hunting expeditions, or nature observation, the Tasco 1575 stands out as an exceptional tool that meets the demands of avid outdoor enthusiasts. Its blend of features, technologies, and characteristics ensures that users can capture the beauty of the natural world with confidence and clarity.