CN2186404Y

CN2186404Y - Spotlight device of radium diode

Info

Publication number: CN2186404Y
Application number: CN 94204695
Authority: CN
Inventors: 何国梁
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-24
Filing date: 1994-02-24
Publication date: 1994-12-28
Anticipated expiration: 2004-02-24

Abstract

The utility model relates to an optical device, particularly a light condensing unit of a laser light pen. The utility model aims to remove a light box with pinholes for optical filtering arranged in the existing structure and to reduce the workload of focusing, and is composed of a front cover, a lens seat, an erection seat of laser diode, a plastic lens, a laser diode, a printed circuit board and a conductive spring. The front cover is spirally connected with the rare end of the lens seat, and the lens is arranged in the lens seat. The laser diode, the printed circuit board and the conductive spring are arranged at the back part of the erection seat of laser diode and are partially exposed on the erection seat. The utility model is water-proof and shockproof and is without skew lens, and can obtain bright luminous beams suitable for long distance.

Description

Spotlight device of radium diode

The utility model relates to a kind of optical devices, relates to a kind of beam condensing unit structure of radium-shine light pen or rather.

The light pen that tradition is used, the beam condensing unit of its laser diode comprises the eyeglass seat 1a and the laser diode erection seat 2a of focus adjustable as shown in Figure 6.Its eyeglass seat 1a is the hollow round tube body 10 of a band stepped appearance through hole, the through hole point diameter is little, the rear end diameter is big, installing glass convex lens sheet 4a on the ladder interface of through hole, pipe body 10 back segment outer walls are provided with pin thread 11a laser diode erection seat 2a, it also is the hollow circular body 20 of a coherent perforation, but through hole has two flights, be that through hole two ends diameter is bigger, mid diameter is less, body 20 front end through hole inwalls are provided with female screw 21a, be used for combining, and adjust distance between laser diode 6 and glass convex lens sheet 4a, again through the aperture 12 of eyeglass seat 1a front end by the solid tightness of spiral shell between the two with pin thread 11a spiral shell dress on the eyeglass seat body 1a, the formation light beam penetrates, and distance can reach more than 100 meters.

Because glass convex lens sheet 4a is short focal length, the major diameter eyeglass of being made by underhand polish, the focal length of each eyeglass can not be identical, so each beam condensing unit all need adjust focal length one by one, improved cost and time-consuming, require great effort; In addition, positive and negative screw thread 11a, the 21a that eyeglass seat 1a combines with laser diode erection seat 2a is the coarse thread that goes out with general low speed lathe car, precision is poor, make two members mutual spiral shell dress in conjunction with the time, be difficult for grasping branch be located at two in the different hollow

circular bodys

10,20 convex lens sheet 4a and the concentricity of 6 of laser diodes, cause light source different, influenced the optically focused of convex lens sheet, more increased the difficulty of adjusting focal length with the center of lens line; The through hole inwall of eyeglass seat 1a and laser diode erection seat 2a presents the primary colors of used metal material, as silver color or golden yellow, owing to the light of reflection laser diode 6 produces shadow and is projected on the convex lens sheet 4a, the light that beam condensing unit projected that causes the good focal length of adjusted not only shadow is big and produce irregular halation in outer rim, shown in Fig. 5 a, can not form light and circular light spot clearly, also can not change through adjusting repeatedly.

The beam condensing unit that uses at above-mentioned tradition has the problem on the adjustment focal length and can't obtain little incident point and the projecting beam of no halation, and designed a kind of beam condensing unit of exempting to focalize, easily grasp the low laser diode of concentricity and price, as shown in Figure 3, Figure 4.Adopt the molded convex lens sheet 4 of cheap plastics, cooperate a fixed sleeving 8 and a smooth projecting base 7 that is provided with light casket (grid) 82 to constitute.Fixed sleeving 8 is metal circular bodys 80, and front end has the prominent pipe 81 than minor diameter, and body 80 central authorities are provided with stepped through hole, in the small diameter bore of prominent pipe 81 positions, is provided with the light casket (grid) 82 of a tool pin hole 83, does optical filtering work; Light projecting base 7 is cone-shaped metal system hollow circular bodys 70, and front end is established printing opacity aperture 71, and the rear end is proper than large diameter hole, and socket combines with prominent pipe 81 wringing fits of fixed sleeving 8; Before fixed sleeving 8 and light projecting base socket combination, earlier laser diode 6 is installed at fixed sleeving body 80 through hole rear sides, printing opacity aperture 71 rear sides in light projecting base body 70 lining is established an O type glue ring 3b again, and device plastics convex lens sheet 4a, at last with fixed sleeving 8 and the 7 tight sockets of light projecting base.

This improvement structure still has following shortcoming:

1. though adopted the little convex lens sheet 4 of plastics, but owing to be provided with the light casket (grid) 82 of tool pin hole 83 in the fixed sleeving body 80, filter out " central authorities " part circle shadow in the horizontal stripe shape shadow that is sent by laser diode 6, behind this projection light planoconvex lens sheet 4a, form aperture 71 ejaculations of light beam by light projecting base body 70 front ends.Because only won " central authorities " the small part shadow in the horizontal stripe shape shadow, so the still clear inadequately distinctness of the shadow behind optically focused, then brightness is not enough during long drive.

2. because the through hole inwall of metal smooth projecting base 7 and fixed sleeving 8 still is the primary colors of iron, aluminium, copper etc., do not do the work of tinting such as blacking, the horizontal stripe shape shadow of the laser diode 6 of its reflection, not only unreal the generation on the contrary of the shadow that is incident upon on the light casket (grid) confused, cause the light beam behind the planoconvex lens sheet 4a optically focused, empty and unreal, luminance shortage and can not long drive;

3. light projecting base 7 and fixed sleeving 8 are when combining closely, concentricity should compare unanimity, but because of O type glue ring 3b and the convex lens sheet 4a that is installed in the light projecting base 7 all fixes in advance, but according to both mutually nested in conjunction with the time just hold out against fixing with the lower diameter tube 81 of fixed sleeving body 80 front ends, therefore eyeglass 4a easily has crooked phenomenon, not only there is not waterproof action, it is crooked that the light beam that more causes optically focused to form penetrates guiding, when light projecting base 7 front end apertures 71 penetrate, form and lack the circle phenomenon, shadow shown in Fig. 5 b makes originally and produces unfilled corner with regard to the circular truncation surface of unreal light beam, and brightness is more not enough.

The purpose of this utility model is at the shortcoming on above-mentioned two kinds of laser diode beam condensing unit structural designs, and designs a kind of beam condensing unit that improves structure, can exempt to focalize, easily grasp concentricity, cheap, and removes the light casket and the O type glue ring of band pin hole from.

The beam condensing unit of laser diode of the present utility model, comprise the laser diode erection seat of optically focused with eyeglass seat, laser diode and the ccontaining laser diode of glass lens, ccontaining glass lens, being spirally connected with the negative and positive screw thread between eyeglass seat and laser diode erection seat combines, and it is characterized in that:

Described eyeglass seat is one to be the aluminium alloy material hollow cylinder of " U " shape, and front end has laser to penetrate aperture, and there is female screw the rear end, and described glass lens device is on the stepped appearance interface of cylindrical shell aperture rear side and female screw;

Described laser diode erection seat is the aluminium alloy material thin-walled body that central authorities are provided with the stepped appearance through hole, and its front tube inwall has and described eyeglass seat female screw mating male threads;

Comprise that also one is nested with the cylinder-shaped front shroud of hollow " U " shape at described eyeglass seat front end, the front shroud front end is that laser penetrates aperture, and the rear end is a conical pit.

The direct embeded-fixed device of eyeglass is in eyeglass seat inner front side, front shroud is linked in eyeglass seat front end, device has the laser diode erection seat of laser diode and eyeglass seat to screw togather, and do slightly to focus on to adjust, the horizontal stripe shape shadow that laser diode sends is through the direct optically focused of eyeglass, can form a truncation surface and almost be the reality of " proper circle fully " and bright light beam, penetrate by the front shroud aperture.

Below in conjunction with the embodiment accompanying drawing, further specify structure of the present utility model

Fig. 1 is the skiagraph of the utility model structure according to the axle center section.

Fig. 2 is the three-dimensional exploded view of the utility model structure.

Fig. 3 is a kind of beam condensing unit three-dimensional structure diagram of this case citation.

Fig. 4 is the skiagraph of beam condensing unit shown in Figure 3 according to the axle center section.

Fig. 5 a-Fig. 5 c is respectively the shadow comparison diagram of beam condensing unit shown in Fig. 6, Fig. 3 (4), Fig. 1 (2).

Fig. 6 for a kind of tradition of this case citation with the skiagraph of beam condensing unit according to the axle center section.

Fig. 3,4,6 and Fig. 5 a, Fig. 5 b before address, repeat no more.

Referring to Fig. 1, Fig. 2, laser diode beam condensing unit of the present utility model comprises eyeglass seat, laser diode erection seat 2, front shroud 3, glass lens 4, laser diode 6 and printed circuit board (PCB) 5 and power spring 51 thereof.

Eyeglass seat 1, it is one " U " type tube body 10, make type with rods and bars of aluminium alloy with high speed and precision computer lathe car, its front end is established a laser and is penetrated aperture 11, rear end then car goes out thin or special thin female screw 12, on the stepped appearance through hole inwall 13 of cylindrical shell 10, the application black layer makes it to reflect the shadow of laser diode 6.

Glass lens 4 is molded out of plastic, be that focal length is the cheap little eyeglass of 5.96mm, device is at the rear side of eyeglass seat 1 cylindrical shell 10 front end apertures 11, the shadow that laser diode 6 sends can be gathered into light beam is penetrated by aperture 11, eyeglass 4 bearings just are interface 14 places of cylindrical shell 10 interior female screws 12 and cylinder inboard wall 13, can dash, the pressure mode dashes and establishes several riveting points, and glass lens 4 embeded-fixed devices are located on interface 14.

Laser diode erection seat 2 is the thin-walled body 20 that central authorities are provided with the stepped appearance through hole, makes type with aluminium alloy pipe with high speed and precision computer lathe car.Body 20 front end outer wall cars go out to have the pin thread 21 that matches with eyeglass seat 1 rear end female screw 12, but make both spiral shell dress combinations, as shown in Figure 1.Also application black layer on the inwall 22 of body 20 makes it to reflect the shadow that laser diode 6 sends.

" U " shape hollow cylinder 30 of front shroud 3, front end is that laser penetrates aperture 31, the rear end then is set to conical pit 32, also application black layer on the inwall of conical pit 32, effect is nested with front end at eyeglass seat 1 with aforementioned front shroud 3, is used to guide the shadow that gathers into light beam via glass lens 4, penetrates through its front end aperture 31, can do the remote projection more than hundred meters, luminous point is real and bright.

Printed circuit board (PCB) 5 is established for device laser diode 6 and energizing circuit thereof, comprises integrated, resistance, electric capacity etc.A spring 51 is welded in printed circuit board (PCB) 5 rear ends, is used to import power supply.

After the assembling, the laser diode 6 in the said structure is in the middle section position of body 20 approximately.

Eyeglass seat 1 of the present utility model and laser diode erection seat 2 all adopt the fine turning lathe car to make type, and yin,

yang screw thread

12,21 is between the two made closely-pitched or special closely-pitched again, so after screwing togather mutually, can reach the concentricity just as one easily; Front shroud 3 is again the front end that directly tightly is linked in eyeglass seat 1, so the three can keep good concentricity, the shadow that laser diode 6 sends can accurately be incident upon on the glass lens 4, can penetrate also accurate aperture 31 by front shroud 3 front ends from eyeglass seat cylindrical shell 10 front end apertures 11 exactly again and shoot to a distant place behind its optically focused.

During enforcement, behind DCO, set the length of length, size and the set

screw thread

12,21 thereof of eyeglass seat cylindrical shell 10 and laser diode erection seat body 20, so after screwing togather mutually, the distance that its laser diode 6 and glass lens are 4 roughly has been set length, eyeglass 4 is molded out of plastic again, focal length is unified, therefore can obtain the focal length that needs as long as do advance and retreat adjustment slightly, and adjust rapidly convenient, in case transfer and appropriately putting screw thread fixing glue or lacquer on the screw thread again, but fixed focal length then.

Eyeglass 4 is embedded in the eyeglass seat 1, can be adjacent to the inner edge surface of cylindrical shell 10 front end apertures 11, can be not crooked, and need not install O shape glue ring promptly has waterproof, shockproof effect.

All coat black layer on the through hole inwall of eyeglass seat 1, laser diode erection seat 2 and front shroud 3, light beam can be penetrated in by dark place under the situation that not disturbed by reflected light, luminous point is real and bright, as shown in Fig. 5 c, is the high-quality luminous point that is almost " proper circle ".

The utility model is compared with background technology, also adopts cheap glass lens, but slightly adjusts the focal length that can accurately be needed; Though set up front shroud, exempt to have established O shape glue ring, and waterproof, shockproof, keep eyeglass not crooked, make easily, can save Production Time and cost.

Claims

1, a kind of beam condensing unit of laser diode, it comprises the laser diode erection seat of optically focused with eyeglass seat, laser diode and the ccontaining laser diode of glass lens, ccontaining glass lens, being spirally connected with the negative and positive screw thread between eyeglass seat and laser diode erection seat combines, and it is characterized in that:

2, the beam condensing unit of laser diode according to claim 1, it is characterized in that also comprising that one is equiped with the printed circuit board (PCB) of laser diode energizing circuit and is welded on the power spring of printed circuit board (PCB) rear side, described laser diode is welded on the front side of printed circuit board (PCB), and is in the middle section position of described laser diode erection seat through hole.

3, the beam condensing unit of laser diode according to claim 1 is characterized in that on the conical pit wall of described eyeglass seat cylindrical shell through hole inwall, laser diode erection seat body through hole inwall and front shroud cylindrical shell through hole the blackwash layer being arranged.

4, the beam condensing unit of laser diode according to claim 1 is characterized in that the female screw of described eyeglass seat cylinder back-end and the pin thread of described laser diode erection seat body front end are closely-pitched or extra fine.

5, the beam condensing unit of laser diode according to claim 1 is characterized in that described glass lens upper punch is provided with several riveting that is used for build-in points.