CN2454826Y - Optical reflecting device - Google Patents

Abstract

The utility model relates to an optical reflecting device, which is arranged in an optical path device of an optical device. The optical path device comprises a light source device, a reflecting device, a light gathering device and a photoelectric converting device, wherein, the light source device can provide required light, the reflecting device contains a plurality of reflection mirrors, the reflection of each of the reflection mirrors can reach certain optical path length by light which is provided by the light source device, the light gathering device receives light reflected by the reflecting device and enables light to be aggregated and imaged, the photoelectric converting device receives light which is aggregated and imaged by the light gathering device and enables light to changed into electrical signals, and the reflection mirror forms a trapezoid shape. Space occupied by reflection lenses can be reduced, the volume of optical devices can be reduced, materials can be reduced, and cost can be reduced.

Description

Optical reflection unit

The utility model relates to a kind of optical reflection unit, particularly relates to the optical reflection unit that is applied to optical path device in the optical scanner.

The video imaging principle of general optical scanner is through charge coupled cell (CCD) signal of light to be converted light to electric signal for electronics process and storage through reflection repeatedly again after camera lens (lens) is gathered into picture by an optical path device.Because the required light path of optical imagery is to have certain length, so need this light to be done several reflection back effectively to dwindle its size by several pieces catoptrons at the optical path device of optical device.But in the traveling process of light, the imaging width of light can narrow down in regular turn with the increase in light path path, so the light path that is used on catoptron zone can diminish relatively in regular turn.

Consult Fig. 1 (located by prior art one), synoptic diagram for optical path device 1 among the platform-type optical scanner of commonly using at present, the path of this light path is by a light source 13 and three rectangular mirrors 14,15,16 and a camera lens (LENS) 17 and 18 formations of a charge coupled cell (CCD).Light transmission one clear glass 12 of one light source 13 shines to a draft 11, this draft 11 reflexes to first catoptron 14, second catoptron 15 and the 3rd catoptron 16 in regular turn with light after irradiation, the 3rd catoptron 16 again with the light directive in a camera lens 17, from the light of these camera lens 17 polymerizations again directive in a charge coupled cell 18.

Consult Fig. 2, be the schematic perspective view of Fig. 1.Place a base 101 of second catoptron 15 and the 3rd catoptron 16 shown in the figure, this base 101 is to be run through by a sliding axle 190 at least, and a CD-ROM drive motor 192 is placed on these base 101 next doors, and this CD-ROM drive motor 192 can make this optical path device 1 move.

Consult Fig. 3, be the front elevation of first catoptron 14 among Fig. 1, figure bend zone 142 for light path in zone that this first catoptron 14 is used.

Consult Fig. 4, be the cut away left side view of Fig. 1, it demonstrates catoptron 15,16 employed light paths and uses the zone.By among the figure as can be known the light path of this second catoptron 15 use zone 152, use the size in zone 162 and inequality with the light path of the 3rd catoptron 16.Though in fact this first catoptron 14 and second catoptron 15 and the 3rd catoptron 16 sizes are identical, because of the zone that its light path used is to successively decrease successively through the order in path according to light path institute, so the light path of the 3rd catoptron 16 uses regional 162 to should be minimum.

As Fig. 4, can find out that this CD-ROM drive motor 192 is to be positioned over base 101 next doors, the width of this base 101 is L, the width of this CD-ROM drive motor 192 is L1.That is this CD-ROM drive motor 192 additionally to occupy a width be L1, and make the width of scanner and volume all can become big and cause the waste in space.

Consult Fig. 5 (located by prior art two), for the catoptron in the paper feed type optical scanner of commonly using 24,26 carries out the light path area schematic of light reflex time, its light reflection order is shown in arrow indication order.Catoptron shown in the figure is more than first catoptron 24 and more than second catoptron 26, it can make light twice reflection, and light has two different use zones at more than first catoptron 24 respectively with more than second catoptron 26, the use zone of more than first catoptron 24 is 241,242, the use zone of more than second catoptron 26 is 261,262, and the size in its use zone is to successively decrease in regular turn according to 241 → 261 → 242 → 262.By among the figure as can be known this repeatedly catoptron 24,26 except the light path zone that used 241,242,261,262 is outer other zones to be arranged still be that light path does not use.

Can find from above-mentioned two kinds of located by prior art, be provided with multi-disc in the optical path device through reflecting catoptron (located by prior art one) once no matter be to use, can be or use through reflection catoptron (located by prior art two) repeatedly, although its technology is slightly different, but employed basically catoptron all takies sizable space, make it not only will use suitable material during fabrication thus, cost is higher relatively, nor meeting popular at present light, thin, short, little trend, the product of production is also lacked competitiveness relatively.

The purpose of this utility model is to provide a kind of optical reflection unit, it can reduce the shared space of reflecting optics reaching under the function that prior art provides, and dwindles the volume of whole optical device, and reduce employed material and cost is reduced, popular requirement.

For achieving the above object, the utility model provides a kind of optical reflection unit, is to be arranged in the optical path device of an optical device, and this optical path device includes:

One provides the light supply apparatus of institute's light requirement;

One reflection unit comprises most catoptrons, each mirror reflects by light that this light supply apparatus provided to reach certain optical path length;

One beam condensing unit is accepted to be reflected the light that comes and be gathered into picture by this reflection unit; And,

One photoelectric conversion device is accepted also this light to be converted to electric signal by the light of picture that this beam condensing unit is gathered into;

It is characterized in that: this catoptron is a trapezoidal shape.

Described optical reflection unit is characterized in that: the size of this catoptron is to carry out the reflector space that the light reflex time uses according to catoptron respectively and successively decrease successively.

Described optical reflection unit is characterized in that: this catoptron is a catoptron of light being done at least one secondary reflection.

Described optical reflection unit is characterized in that: this catoptron is the catoptron that can distinguish most light path zones.

Described optical reflection unit is characterized in that: this beam condensing unit is a camera lens.

Described optical reflection unit is characterized in that: this photoelectric conversion device is a charge coupled cell.

Described optical reflection unit is characterized in that: this catoptron is to be attached on the base that provides support for catoptron, and this base is trapezoidal shape.

After having adopted said structure, optical reflection unit of the present utility model, the size of its catoptron is respectively according to itself carrying out the reflector space that the light reflex time uses and cut into the catoptron of a similar trapezium structure, it is being reached under the function that original technology provides, can reduce the shared space of catoptron effectively, the employed space of overall optical range device is more dwindled, and then whole optics equipment volume is more reduced, and it can also reduce employed material with the reduction production cost, and promotes competitiveness of product relatively.

Below, with specific embodiment the utility model is done further detailed description in conjunction with the accompanying drawings.

Fig. 1 is the optical path device synoptic diagram of the platform-type optical scanner commonly used.

Fig. 2 is an optical path device stereographic map in the platform-type optical scanner of commonly using.

Fig. 3 is the catoptron front elevation of the platform-type optical scanner commonly used.

Fig. 4 is the left cut-open view of Fig. 1, and it demonstrates the employed light path of the second and the 3rd catoptron and uses the zone.

Fig. 5 is the light path area schematic that the catoptron in the paper feed type optical scanner of commonly using carries out reflex time.

Fig. 6 is applied to the optical path device stereographic map of platform-type optical scanner for the utility model.

Fig. 7 is applied to the front elevation of the catoptron of platform-type optical scanner for the utility model.

Fig. 8 is applied to the left cut-open view of optical path device in the platform-type optical scanner for the utility model, and it demonstrates catoptron employed light path zone and is designed to trapezoidal base.

Fig. 9 is applied to the optical path device synoptic diagram of paper feed type optical scanner for the utility model.

Figure 10 carries out the employed light path area schematic of reflex time for two catoptrons among Fig. 9.

The detailed description of utility model:

The utility model is a kind of optical reflection unit, and it provides a kind of design of trapezoidal mirror, and is applied to the catoptron of optical path device in the optical device, particularly the optical path device of tool one or many reflection in optical scanner.This optical path device includes: a light supply apparatus, a reflection unit, a beam condensing unit and a photoelectric conversion device.This light supply apparatus provides needed light source; This reflection unit then comprises most catoptrons, and each catoptron is reflection by light that this light supply apparatus provided to reach a predetermined optical path length; This beam condensing unit is to accept to be reflected the light that comes and be gathered into picture by this reflection unit; This photoelectric conversion device is to accept by the light of picture that this beam condensing unit is gathered into and convert it to electric signal; Wherein this reflection unit is characterised in that the size of this catoptron is respectively according to itself carrying out the reflector space that the light reflex time uses and cut into the catoptron of a similar trapezium structure.

Consult Fig. 6 (for first preferred embodiment of the present utility model), be applied to the optical path device stereographic map of platform-type optical scanner for the utility model.The utility model is excised the untapped zone of light path in the catoptron, to form first catoptron, 44 second catoptrons 45 and the 3rd catoptron 46 of present embodiment.This trapezoidal base 401 can provide this majority catoptron 44,45,46 and other members of this optical device such as camera lens 47 and charge coupled cell 48 mechanical supports, and make this majority catoptron 44,45,46 can adhere to and location, this majority catoptron 44,45,46 can do light the reflection of suitable direction and distance.Present embodiment still can reach light under the complete function of reflecting and and then can reduce the shared volume of catoptron, so present embodiment not only can replace the technology of commonly using fully, but also promoted new function.

Consulting Fig. 7, for the utility model is applied to the front elevation of the catoptron of platform-type optical scanner, is example with first catoptron 44 among Fig. 6, and wherein hatched example areas is that light path is employed regional 442, and first catoptron 44 be designed to one trapezoidal.

Consult Fig. 8 (second preferred embodiment of the present utility model), be the cut away left side view of Fig. 6, demonstrate first catoptron 45 and second catoptron 46 employed light paths zone and base designs structure in echelon.By among the figure as can be known the light path of this second catoptron 45 use zone 452, and the light path of the 3rd catoptron 46 uses the big or small inequality of zone 462.Therefore the zone that does not use can be given suitable excision so that second catoptron 45 and 46 formation of the 3rd catoptron are trapezoidal, and base 401 is also suitably cut to form a trapezium structure according to the size that second catoptron 45 and the 3rd catoptron 46 are excised.Visual thus actual needs with saved space place other element or device, be that a CD-ROM drive motor 492 is inserted in the present embodiment, its width is L1, can cooperate ginseng to rush the located by prior art of Fig. 4 at this, the width of the CD-ROM drive motor 492 among Fig. 8 is L1, identical with the width L1 of CD-ROM drive motor 192 among Fig. 4, the width of the base 401 among Fig. 8 is L, identical with the width L of base 101 among Fig. 4, this preferred embodiment clearly can't additionally occupy the width of a CD-ROM drive motor 492, and can effectively save the shared width L1 of a CD-ROM drive motor 492, and then therefore can effectively reduce the volume of whole optical scanner.Certainly this preferred embodiment institute effectively saves space down and is not defined to place a CD-ROM drive motor, in fact the needs of the visual reality of its equalization variation example and different.

Consult Fig. 9 (for the 3rd preferred embodiment of the present utility model), synoptic diagram for the optical path device that is applied to the paper feed type optical scanner, wherein this catoptron 54,56 can repeatedly reflect, promptly catoptron can be with the light reflection repeatedly in a light path, and it is different according to the zone that light path used, can on same mirror, distinguish different use zones, and be twice of reflection in the present embodiment and distinguish two and use the zone.As shown, light transmission one clear glass 52 of one light source 53 shines to a draft 51, and this light is reflexed to first reflector space 541 of more than first catoptron 54, this light also reflexes to first echo area 561 of more than second catoptron 56 in regular turn and reflexes to second reflector space 542 of more than first catoptron 54, after reflexing to second echo area 562 of more than second catoptron 56 again, and via directive one charge coupled cell 58 behind a camera lens 57 optically focused.

Consult Figure 10, for catoptron among Fig. 9 54,56 carries out the employed light path area schematic of reflex time.By among the figure as can be known more than first catoptron 54 be into a trapezoidal shape with more than second catoptron 56.Light path path wherein is second reflected field district 542 of first echo area 561 of first reflector space 541 of more than first catoptron 54, more than second catoptron 56, more than first catoptron 54 and second echo area 562 of more than second catoptron 56 in regular turn, and its light path zone dwindles through order gradually according to light path institute.Therefore visual light path uses the size in zone, and the zone that suitable sanction goes not use is to form the preferred embodiment of this figure.Compare with the located by prior art of Fig. 5 by the utility model the 3rd preferred embodiment, present embodiment can effectively reduce the volume of mirror and the employed space of this optical path device is dwindled as can be known, and then the volume of whole optical device is more dwindled.

Claims (7)

1, a kind of optical reflection unit is to be arranged in the optical path device of an optical device, and this optical path device includes:

One provides the light supply apparatus of institute's light requirement;

One reflection unit comprises most catoptrons, each mirror reflects by light that this light supply apparatus provided to reach certain optical path length;

One beam condensing unit is accepted to be reflected the light that comes and be gathered into picture by this reflection unit; And,

One photoelectric conversion device is accepted also this light to be converted to electric signal by the light of picture that this beam condensing unit is gathered into;

It is characterized in that: this catoptron is a trapezoidal shape.

2, optical reflection unit according to claim 1 is characterized in that: the size of this catoptron is to carry out the reflector space that the light reflex time uses according to catoptron respectively and successively decrease successively.

3, optical reflection unit according to claim 1 is characterized in that: this catoptron is a catoptron of light being done at least one secondary reflection.

4, optical reflection unit according to claim 1 is characterized in that: this catoptron is the catoptron that can distinguish most light path zones.

5, optical reflection unit according to claim 1 is characterized in that: this beam condensing unit is a camera lens.

6, optical reflection unit according to claim 1 is characterized in that: this photoelectric conversion device is a charge coupled cell.

7, optical reflection unit according to claim 1 is characterized in that: this catoptron is to be attached on the base that provides support for catoptron, and this base is trapezoidal shape.

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