CN2391216Y - Optical length apparatus - Google Patents

Abstract

The utility model discloses an optical path device which is used for optical equipment. The optical path device comprises a light source unit, a reflection unit, a lens and an inducting unit, wherein, the reflection unit is composed of at least one manifold reflecting mirror which is used for reducing the space of an optical path, and thereby, the volume of the optical path device is compressed.

Description

A kind of optical path device

The utility model relates to a kind of optical path device that is applied in the optical device, refers to a kind of optical path device of polygonal mirror guiding scanning light path to handle that utilize especially.

In optical imagery equipment as image analyzer, photoprinter etc., can utilize optical path device to make optical imagery handles, and general optical path device all can be used three to four glass mirror at present, this not only causes the assembling complicated problems, also can make this optical path device that the excessive shortcoming of volume is arranged, in this industry that reaches its maturity, how effectively to reduce cost and make this final products miniaturization, be one of major subjects of research.Referring to shown in Figure 1, a kind of optical path device that two eyeglasses are set in the prior art, for solving the shortcoming that optical path device commonly used uses many eyeglasses to cause, this optical path device 1 comprises light source cell 11, reflector element 12, camera lens 13 and sensing cell 14 (as charge coupled cell CCD), this light source cell 11 provides this optical path device 1 imaging required light, this reflector element 12 is directed to camera lens 13 with the light path 16 that master copy file 15 reflects through light source cell 11 scannings, 13 on camera lens is assembled light path 16 and is imaged on sensing cell 14, and converts the digital signal that the brain of can powering is handled to.When the problem of how considering the optical path device volume-diminished, can be conceived to consider how to dwindle the shared space of light path conduct 17, the light path conduct takes up space and is determined by reflector element 12, traditional optical path device uses 3 to 4 reflecting optics, the excessive shortcoming of volume is arranged, and 1 of this optical path device is provided with 2 eyeglasses, and light path is repeatedly reflected at this 2 eyeglass, conspicuous, the optical path device that the volume of this optical path device must be commonly used is little and more economical.

Please consult shown in Figure 1ly again, if can recompress space 17, then the volume of this optical path device 1 can be and dwindles.And space 17 big I are decided at 18,19 li formed angle r of eyeglass by light, and little then space 17 is littler if r is healed.Now consider an optical path device, wherein the relative positions of this optical path device is identical with the optical path device of Fig. 1, the light path 16 of reflection if can control light source cell 11 scan manuscript files 15, this light path 16 is diminished at the angle r that eyeglass 18,19 forms, then can dwindle this light path 16 occupation space 17, and then make the volume-diminished of this optical path device 1.If the optical path device 1 of control chart 1 makes little angle r, it is the light path 16 that master copy file 15 reflects through light source cell 11 scannings, penetrating at eyeglass 18 has little angle r, must consider that then eyeglass 19 interferes light paths 16 to be penetrated in the problem of eyeglass 18, causes to be difficult for reaching control optical path device 1 little angle r is arranged.Moreover if the angle r among Fig. 1 is too small, then the output light path 16 in eyeglass 19 is difficult for being received by camera lens 13, causes the difficulty in the design.

The purpose of this utility model just is to provide a kind of optical path device, dwindling the object distance space of light path, thereby reduces the volume of this optical path device.

The purpose of this utility model is achieved through the following technical solutions: a kind of optical path device, comprise light source cell, reflector element, camera lens and sensing cell, and wherein, described reflector element is to be made up of at least one polygonal mirror.

By technique scheme, described reflector element can be made up of a polygonal mirror and a plane mirror, or two polygonal mirrors are formed.

The pedestal of above-mentioned polygonal mirror is a thermosetting plastics, does the surface again and handle formation optical reflection face on this plastic basis material

The utility model must make light path take less object distance space by polygonal mirror gated sweep light path, and then the volume of squeezed light range device further.

Below in conjunction with drawings and the specific embodiments the utility model is described in further detail again.

The optical path device synoptic diagram that Fig. 1 repeatedly reflects for two lens.

Fig. 2 is the optical path device synoptic diagram of the utility model polygonal mirror.

Fig. 3 is another embodiment synoptic diagram of optical path device of the utility model polygonal mirror.

Seeing also shown in Figure 2ly, is the optical path device of the utility model, of the present utility model being characterised in that, and this reflector element 22 is to utilize polygonal mirror guiding light path 26.The reflector element 22 of the utility model preferred embodiment utilizes a polygonal mirror 28 and level crossing 29 guiding light paths 26 to arrive camera lens 23, controlled the angle beta of light path 26 by polygonal mirror 28 at two eyeglasses 28,29, and make β less than r, thereby make the utility model light path occupation space 27 less, and then make optical path device 2 volumes of the utility model less.In like manner, the utility model also can utilize two polygonal mirrors to realize the control (consulting shown in Figure 3) of angle beta, and makes light path take less space.

The utility model utilizes polygonal mirror to make light path take less space, if the polygonal mirror utilization of the utility model with commonly use identical glass mirror, need consider the problem of cost and technology, therefore, the utility model utilizes a kind of optical reflection plate structure, this reflection board structure is as substrate with the thermosetting plastic base material, doing the surface again on this plastic basis material handles, form the optical reflection face with surface at this reflecting plate, and guided light path, but because this plastic basis material ejection formation, so the difficult problem that its polygonal mirror forms can overcome easily, and the cost that forms also can be low than the flat glass eyeglass, so the utility model polygonal mirror gated sweep light path by this, must make light path take less object distance space, can commonly use the further volume of squeezed light range device.

Claims (4)

1, a kind of optical path device comprises light source cell, reflector element, camera lens and sensing cell, it is characterized in that: described reflector element is for to be made up of at least one polygonal mirror.

2, optical path device according to claim 1 is characterized in that: described reflector element comprises a polygonal mirror and a plane mirror.

3, optical path device according to claim 1 is characterized in that: described reflector element comprises two polygonal mirrors.

4, according to the arbitrary described optical path device of claim 1 to 3, it is characterized in that: the pedestal of described polygonal mirror is a thermosetting plastics.

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