Telescopic lens cone

A lens barrel, elastic expansion technology, applied in telescopes, instruments, optics, etc., can solve the problems of reduced volume, heavy weight, and long lens barrel, and achieve the effects of weight reduction, simple extension and shortening, and simple operation

Active Publication Date: 2008-03-05
NANTONG SCHMIDT OPTO ELECTRICAL TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a telescopic lens barrel with reasonable structure, significantly reduced weight, scalable lens barrel length, and easy operation, which solves the problems encountered by existing Newtonian reflecting telescopes after improving light collection power and resolution. The defects of too long lens barrel and too heavy weight enable the Newtonian reflecting telescope to meet the requirements of high light-gathering power and resolution at the same time, reduce volume and weight, and meet the requirements of easy handling and storage

Method used

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  • Telescopic lens cone
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Embodiment Construction

[0028] As shown in Fig. 1 to Fig. 4, the retractable lens barrel is mainly composed of an upper lens barrel 5, a connecting rod 6, a lower lens barrel 7 and a bracket 8, the upper lens barrel 5 is fixedly provided with an eyepiece 1, and the inside of the upper lens barrel is used for installation Plane reflector, the lower segment lens barrel 7 is erected on a support 8 and can rotate along the support shaft, and the bottom in the lower segment lens barrel is used for fixing the objective lens. The upper lens barrel 5 and the lower lens barrel 7 are coaxially arranged, the length of the upper lens barrel is 1 / 3 of the length of the lower lens barrel, the length of the pull rod 6 is slightly less than the length of the lower lens barrel, and the lower outer wall of the upper lens barrel The upper ends of the three connecting rods are evenly fixed, and the connecting rods are arranged parallel to the axis of the lens barrel. Three sliding sleeves 71 for the pull rods to pass are...

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Abstract

The retractable lens barrel comprises a front lens barrel and a rear lens barrel both located in same axis; the front lens barrel and the rear lens barrel are connected by using even numbers of linkages parallel with the axial line of the lens barrel; the front lens barrel or the rear lens barrel can be zoomed in or out along with the barrel axial direction. The invention can shorten the length of Newton type reflecting telescope and reduces the weight of it.

Description

technical field [0001] The invention belongs to the technical field of telescope components, and in particular relates to a retractable lens barrel for a Newtonian reflecting telescope. Background technique [0002] Reflecting telescopes are one of the three major types of astronomical telescopes. Reflecting telescopes use lenses and mirrors to condense light into images. Use the eyepiece to observe the target to be measured. The Newtonian reflector telescope is currently a more commonly used astronomical observation telescope. It uses a concave parabolic or spherical reflector to converge the light entering the lens and then reflects it to a plane reflector at the front end of the lens barrel, and then the light is reflected by the plane mirror. Reflected into the eyepiece outside the lens barrel, so that the target can be observed. Because the cost of the reflector used in this reflecting telescope is much lower than that of the lens, and the structure is simple, it is v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B23/16G02B23/00
Inventor 沈达忠
Owner NANTONG SCHMIDT OPTO ELECTRICAL TECH CO LTD
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