CN2295224Y

CN2295224Y - Glass assembly of directional scanner

Info

Publication number: CN2295224Y
Application number: CN 97202073
Authority: CN
Inventors: 刘国胜; 余和业
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-12
Filing date: 1997-03-12
Publication date: 1998-10-21
Anticipated expiration: 2007-03-12

Abstract

The utility model relates to a directional scanner and solves the problem of raising performance. A collecting lens is composed of convex lenses respectively corresponding to two pipes in a shell. Light emitted by an LED light source is designed to pass through the collecting lenses via one pipe, corresponding to a convex lens part of the pipe. Reflected light of an object to be measured is designed to be transferred to two receiving polar bodies by the other convex lens, and via the other pipe, a lightproof hole and an elongate light receiving pinhole parallel to the object to be measured. The utility model is used for scanners.

Description

Directed scanner camera lens assembly

The utility model relates to directed scanner, refers in particular to directed scanner camera lens.

Existing scanner is by a led light source, and promptly LED source is projected to determinand, reflects its light source by this determinand again and directly delivers to the diode receiver through an open-work, and the diode receiver is finished identification to determinand according to obtained electric wave again.This identification program, the power of main mat light signal are done identification, and the key factor that influences light signal power mainly contained two: one, the emission light of light source; The 2nd, the reflection ray of determinand, and the light source that luminotron sends is the direction projection of diffusion way 360 degree of radiation-like, projected area is wider, causes reflection ray to reduce; And the circular through-hole that reflection ray sees through too greatly or too hour all influences effect to be measured, also is that the scanner camera lens of this structure has limitation.

The purpose of this utility model provides a kind of directed scanner camera lens assembly of high parsing high flux recognition signal.

The purpose of this utility model is achieved in that directed scanner camera lens assembly, it comprises a lens housing, in housing, have two pipelines, in pipeline, be equiped with LED source respectively, assemble eyeglass, the shading hole, light-receiving pin hole and reception diode, it is characterized in that: assemble eyeglass and be and have two convex lens and form and correspond respectively to two pipelines in the housing, and its LED source emission light is made as by a pipeline wherein and sees through focusing lens corresponding to the convex lens of this pipeline partly, and the determinand reflected light reflexes to and is made as by another convex lens, and by another pipeline through the shading hole and the elongated shape light-receiving pin hole parallel with determinand, be made as and reach again on the reception diode.

Above-mentioned design, make through the projection light of pipeline convex lens more integrated and be incident upon on the determinand, reflected light through another ducted shading hole and light-receiving pin hole, makes the reception diode obtain the photoinduction signal by another convex lens, reaches the effect that height is separated high flux recognition signal.

Below by drawings and Examples the utility model is described further again.

Fig. 1 the utility model perspective exploded view;

Fig. 2 the utility model combination cross-sectional schematic;

As Fig. 1, shown in 2: the directed scanner camera lens of the utility model assembly, it comprises a lens housing 1, in housing 1, have two

pipelines

11,12, at pipeline 11, be equiped with LED source 2 in 12 respectively, assemble eyeglass 3, shading hole 4, light-receiving pin hole 5 and reception diode 6, it is characterized in that: assemble eyeglass 3 for having two

convex lens

31,32 form and correspond respectively to two pipelines 11 in the

housing

1,12, and its LED source 2 emission light are made as by a pipeline 11 wherein and see through focusing lens 3 corresponding to the convex lens 31 of this pipeline partly, and determinand 7 reflected light reflex to and are made as by another convex lens 32, and by another pipeline 12 through the shading hole 4 and the elongated shape light-receiving pin hole 5 parallel with determinand 7, be made as and reach again on the reception diode 6.

Above-mentioned structure mainly to dwindle the outer circular shell of LED source 2, makes its light-resource fousing be emitted at small angles light, once more the light projected area is dwindled during to the convex lens 31 of focusing lens 3, and luminance brightness is strengthened; And the light that is reflected on the projection determinand 7 turns back to another convex lens 32 of focusing lens 3, and stop that through shading hole 4 partly veiling glare passes through, being elongated shape and the light-receiving pin hole 5 parallel with determinand by one again limits to peripheral optical noise once more and number passes through, only by high-throughout main reflected light, to improve photoinduction area and intensity, circular shell outside two utmost points receive body 6 absorbs the reflected light of wide-angle again, reaches the high high-throughout recognition signal of resolving.Assemble eyeglass 3 and can be convex

lens

31,32 one formation, promptly become a aspherical lens, respectively transmitting illuminant is focused on the determinand 7, reflected light is diffused in the induction zone of diode receiver 6 with twin-lens, increase induction area, reach the focusing function of one integrity with both sides.Certainly, focusing lens 3 also can by two independently convex lens constitute; Housing 1 outer rim is established external thread 13, combines so that can add camera lens with other, selects with the focusing of adjusting high harmonic analysis.

Claims

1, directed scanner camera lens assembly, it comprises a lens housing, in housing, have two pipelines, in pipeline, be equiped with LED source respectively, assemble eyeglass, the shading hole, light-receiving pin hole and reception diode, it is characterized in that: assemble eyeglass and be and have two convex lens and form and correspond respectively to two pipelines in the housing, and its LED source emission light is made as by a pipeline wherein and sees through focusing lens corresponding to the convex lens of this pipeline partly, and the determinand reflected light reflexes to and is made as by another convex lens, and by another pipeline through the shading hole and the elongated shape light-receiving pin hole parallel with determinand, be made as and reach again on the reception diode.

2, directed scanner camera lens assembly as claimed in claim 1, it is characterized in that: focus lamp is for to be made of two convex lens one.