JPH02118284U

JPH02118284U -

Info

Publication number: JPH02118284U
Application number: JP2525589U
Authority: JP
Priority date: 1989-03-07
Filing date: 1989-03-07
Publication date: 1990-09-21
Anticipated expiration: 2004-03-07
Also published as: JPH0754865Y2

Description

[Brief explanation of drawings]

第１図は光波距離計の参照光の光量調整機構の
断面図、第２図は光量調整機構の動きを説明する
断面図、第３図は本考案の他の実施例である光波
距離計の一部を断面で示す全体構成図、第４図は
参照光用光路に光フアイバを使用した従来の光波
距離計の概略図である。１０……送光部、１０Ａ……送光部ユニツト、
１１……発光素子である発光ダイオード、１２…
…光源光送光用光フアイバ、１３……ビームスプ
リツタ、１５……シヤツタ、２０……参照光の光
量調整機構、２１……機体ケーシング、２３……
集光レンズ、２５……参照光用光フアイバ、２５
ａ……光フアイバ端面、２６，２６Ａ，２６Ｂ…
…ヘツド、２８……止めねじ、３１……枠体、３
１ａ……ミキシング用光フアイバヘツド係合部、
３１ｂ……参照光用光フアイバヘツド係合部、５
０……受光部である受光素子、Ａ……測距光用光
路、Ｂ……参照光用光路、Ｃ_２……参照光用光路
の光軸。 Fig. 1 is a cross-sectional view of the light intensity adjustment mechanism for the reference light of a light wave rangefinder, Fig. 2 is a cross-sectional view explaining the movement of the light intensity adjustment mechanism, and Fig. 3 is a cross-sectional view of a light wave rangefinder which is another embodiment of the present invention. FIG. 4 is a schematic diagram of a conventional optical distance meter using an optical fiber as an optical path for a reference beam. 10... Light transmitting section, 10A... Light transmitting section unit,
11...A light emitting diode which is a light emitting element, 12...
...Optical fiber for transmitting light source light, 13... Beam splitter, 15... Shutter, 20... Reference light amount adjustment mechanism, 21... Aircraft casing, 23...
Condensing lens, 25... Optical fiber for reference light, 25
a... Optical fiber end face, 26, 26A, 26B...
... Head, 28 ... Set screw, 31 ... Frame, 3
1a... Optical fiber head engagement part for mixing,
31b...Reference light optical fiber head engagement part, 5
0... Light receiving element which is a light receiving part, A... Optical path for ranging light, B... Optical path for reference light, C ₂ ... Optical axis of optical path for reference light.

Claims

[Scope of Claim for Utility Model Registration] (1) The beam splitter provided in the light transmitting section divides the optical path from the light transmitting section to the light receiving section into an optical path for reference light and an optical path for ranging light. In an optical distance meter configured such that an optical fiber is disposed in the optical path for light, and a reference beam split by a beam splitter is guided to the optical fiber by a condensing lens, the condensing lens Alternatively, at least one of the ends of the optical fiber facing the condenser lens is configured to be movable in the optical axis direction, and the condenser lens and/or the end of the optical fiber are moved in the optical axis direction to generate the reference light. A light intensity adjustment mechanism for a reference light in a light wave distance meter, which is characterized by adjusting the light intensity. (2) A light wave distance meter comprising the light amount adjustment mechanism according to claim (1), which comprises the beam splitter and a beam splitter of a mixing optical fiber that guides the light emitted from the light emitting element to the beam splitter. a connecting portion to which the ivy side end can be connected; a shutter that selectively appears and reappears in each of the optical paths divided into two by the beam splitter to switch between a reference optical path and a ranging optical path; and a reference beam optical path. A connecting portion to which the beam splitter side end of the optical fiber constituting the beam splitter can be connected is integrated as a light transmitting unit, and is configured to be separated from the main body of the optical distance meter. Total.