CN2293794Y

CN2293794Y - Adjustable semi-conductor laser collimation head

Info

Publication number: CN2293794Y
Application number: CN 97217801
Authority: CN
Inventors: 胡玉禧; 周绍祥; 邢晓正
Original assignee: University of Science and Technology of China USTC
Current assignee: University of Science and Technology of China USTC
Priority date: 1997-04-28
Filing date: 1997-04-28
Publication date: 1998-10-07
Anticipated expiration: 2007-04-28

Abstract

The utility model relates to the applied technique of a semiconductor laser. An adjustable semiconductor laser collimation head comprises optical lenses and a mechanical support mechanism, wherein, the optical lenses are a collimation lens assembly. The utility model is characterized in that at least one lens of the lens assembly is arranged on a member which can move axially; the member and a support element provided with other lenses form integration. The focal distance of the collimation head can be changed and adjusted in the certain rang and consequently can obtain parallel laser beams with different calibers to satisfy the requirements of different occasions. The utility model is favorable for the instrument under the optimal operating as well as the manufacture and the industrialized production in batches.

Description

Adjustable semiconductor laser alignment head

The utility model relates to the semiconductor laser application technology.

Semiconductor laser is a kind of solid-state laser, and it is in optical fiber communication, the laser-optical disk information storage, and technical fields such as laser printing, laser ranging have obtained to use widely.According to the luminescence mechanism of semiconductor laser, its light beam that sends is a branch of diverging light, and mostly is to need parallel laser beam in actual applications.Therefore, the laser beam that energy of configuration will be dispersed on the light path of laser instrument front usually changes the device of collimated laser beam, i.e. semiconductor laser beam collimation head in the prior art.This collimation head partly is made of optical lens and mechanical support means two.Described camera lens is a collimation lens combination, wherein, and the stationkeeping of each lens, the focal length of camera lens (f ') is a fixed value, before camera lens being put dry semiconductor laser instrument transmitting aperture, and make its focus just in time salty fashionable with the laser instrument transmitting aperture, what then penetrate from camera lens is collimated laser beam.The bore of this collimated laser beam depends on lens focus, and focal length is big more, and the bore of parallel beam is just big more.Because a kind of head that collimates can only have a fixing focal length, so it can only provide a kind of collimated laser beam of fixedly bore.If change the bore of laser beam, must use different collimation heads again instead, this makes troubles to the user.

The purpose of this utility model is to overcome deficiency of the prior art, and provide a kind of and can conveniently regulate its lens position, thus the semiconductor laser alignment head that the focal length value of camera lens can be changed in a certain scope.

The purpose of this utility model is realized by following mode.

Collimation head of the present utility model, include optical lens and mechanical support means, described optical lens is a collimation lens set, it is characterized in that, have at least lens to be arranged on the axially movable member of energy in the described lens combination, thread transmission etc. for example, this member and the support unit that other lens are set constitute whole.

Compared with prior art, the utility model has usable range wide, adaptable advantage, because in practice, laser intelligence is stored, laser printing, laser medicine, different occasions such as laser ranging, need to use the collimated laser beam of different bores, simultaneously, for quasi-instrument, because of the difference of model specification or external environment condition, also need the collimated laser beam of different bores, collimation head described in the utility model utilizes one or more lens in the camera lens to move axially easily, makes it be in diverse location, its focal length is changed, obtaining the collimated laser beam of different bores, and its bore value can change in a certain zone continuously, thereby satisfied the needs of various different use occasions utilizations; Simultaneously for a certain instrument, since condition of work, the change of environmental factor etc., neither a definite value to the demand of laser beam bore, use collimation head described in the utility model, because the continuous adjustable function of its uniqueness, by regulating, can make instrument be in optimum Working.On the other hand, this performance of using also for processing and manufacturing, industrialized mass production provide convenience, and helps reducing manufacturing cost more.When the actual industrial batch process, can be by the size of laser beam bore, with product seriation.

Be further described below by embodiment and accompanying drawing thereof.

Fig. 1 is a kind of example structure synoptic diagram.

Among the figure, (1) is lens barrel A, and (2) are back-up ring A, (3) be lens A, (4) outer lens barrel B, (5) are inner lens cone B, (6) for immersing oneself in pin, (7) are lens B, (8) intermediate sleeve, (9) back-up ring B, (10) lens barrel C, (11) lens C, (12) are back-up ring C, (13) microscler through hole, (14) are semiconductor laser.

From figure as can be seen, lens barrel A (1) has the ladder mesopore, and left hole has screw thread in order to cooperate with the semiconductor laser emission port on back-up ring A (2) outside surface, and the screw-internal thread fit of it and lens barrel A right-hand member mesopore is in order to fixed lens A.Equally, lens B (7) is fixed on the inner lens cone (5) by back-up ring B, and lens C (11) is fixed on the lens barrel C by back-up ring C.The boss external diameter of lens barrel C left end mesopore and lens barrel A cooperates, and connects in aggregates.Be set with intermediate sleeve (8) on the lens barrel C left end periphery, the inner lens cone (5) that lens B is installed is sleeved in the mesopore of lens barrel C, and microscler through hole (13) is arranged on the sidewall of lens barrel C.Immersing oneself in pin (6) is connected intermediate sleeve in aggregatesly with inner lens cone B, and can move axially in microscler through hole, is provided with screw thread on the external cylindrical surface of intermediate sleeve, the inner hole thread cooperation of this screw thread and outer lens barrel B (4).The periphery of speculum metal is provided with straight knurling outside.When the end user rotated outer lens barrel B (4) with hand, then intermediate sleeve was asked mobilely through inner lens cone B (5) drive lens B axle, the focal length of camera lens is changed, so that the variation of laser beam bore.The length of described microscler through hole (13) is the range of lens B.

In the present embodiment, use three lens A, B, C, wherein, lens A is lenticular, can axially movable lens B be double concave, and lens C is a convexo-plane.When reality is used, the quantity of described use lens, can axially movable lens numbers and the shape of lens etc. can determine according to request for utilization.Can move axially if two or more than two lens are set, optical effect can be better, but more complex on the structure.Comparatively speaking, present embodiment has simple in structure, advantage easy to use.

Claims

1. adjustable semiconductor laser alignment head, include optical lens and mechanical support means, described optical lens is a collimation lens set, it is characterized in that, have at least lens to be arranged on the axially movable member of energy in the described lens combination, this member constitutes whole with the support unit that other lens are set.