Sextant high in horizontal stability

A stable and sextant technology, applied in the field of marine sextants and sextants, can solve problems such as affecting stability, and achieve the effects of improving horizontal stability, avoiding unstable holding and easy use.
CN105651244AInactive Publication Date: 2016-06-08ZHEJIANG OCEAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG OCEAN UNIV
Publication Date
2016-06-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

A sextant high in horizontal stability comprises a panel, a moving mirror, a fixed mirror, a telescope, a swing arm, a mounting shell, a support, a first light-reflecting mirror and a second light-reflecting mirror, wherein the mounting shell is a hemispherical shell with an upward end opening, a dial of the panel faces downward and is arranged in the mounting shell vertically, and the sidewall of the mounting shell is provided with a through hole allowing the fixed mirror to expose. The mounting shell is mounted on the support by enabling the end opening thereof to keep parallel to the sea level constantly through a rotating mechanism. The first light-reflecting mirror and the second light-reflecting mirror are arranged on the panel, the first light-reflecting mirror is used for receiving rays reflected by the fixed mirror and reflecting the received rays to the second light-reflecting mirror, and the telescope is arranged on the mounting shell and capable of receiving rays reflected by the second light-reflecting mirror. The sextant high in horizontal stability has the advantages that the mounting shell is matched with the support to enable an observation surface of the sextant to keep horizontal to the sea level constantly, so that horizontal stability of the sextant is improved; the first light-reflecting mirror and the second light-reflecting mirror are matched with the moving mirror and the fixed mirror to enable the reflected rays to be positioned above the mounting shell, so that observation of the rays by the telescope is facilitated, and convenience in use is achieved.
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Description

technical field

[0001] The invention relates to the technical field of a marine sextant, in particular to a sextant with good horizontal stability. Background technique

[0002] The sextant is an optical instrument commonly used in the field of navigation to measure the angle between two distant targets. It is mainly used to measure the angle between the sun or other celestial bodies and the sea level or horizon at a certain moment, so as to quickly know the position of the ship. latitude and longitude.

[0003] When a ship sails in the ocean, it often encounters strong winds and waves, and the pitching of the ship will cause large heel and trim angles. Under such sea conditions, it is inconvenient to use a conventional sextant to measure the sun's altitude angle, and it is easy to cause large errors. At the same time, because the existing sextant is generally used directly in the hand, the metal sextant is relatively heavy, and after holding it for a certain period of time...

Claims

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