CN2430707Y - Optical distance device of optic scanner - Google Patents

Abstract

The utility model relates to an optical path device of an optical scanner. The utility model comprises a light source, a reflection mirror group, a lens and a charge coupling element, wherein, (light) which is provided by the light source and passes through the reflection of the reflection mirror group passes through the focusing of the lens again and then is imaged on the charge coupling element. The utility model is characterized in that the reflection mirror group comprises at least three reflection mirrors, wherein, at least one reflection mirror is a double-face reflection mirror, the double-face reflection mirror comprises a first reflection surface and a second reflection surface, and (light) passes single reflection at least on the first reflection surface and the second reflection surface of the double-face reflection mirror after entering the reflection mirror group.

Description

The optical path device of optical scanner

The creation field:

The utility model relates to a kind of optical path device of optical scanner, particularly a kind of optical path device with double mirror.

The creation background:

Press, the utilization principle of optical scanning device mainly be by an optical path device with light beam steering through lens imaging, and utilize a charge coupled cell (CCD converter) to convert the light signal of this imaging to digital signals that the brain of can powering is handled, it is right because the light path of its imaging institute palpus must be at least on certain-length, if this light path is to carry out with linear fashion, then may make the volume of this optical path device become very big, but excessive volume and present electronic product are towards gently, thin, short, little trend is to disagree, therefore present industry is in the design of the optical path device of scanner, be to utilize several pieces catoptrons under the constant principle of optical path length, " light " that enters optical path device inside is done reflection for several times, make the volume of scanner can obtain to reduce effectively.Therefore, in this optical path device, its number of mirrors, size and position corresponding mutually, configuration thereof will directly determine the volume and the weight of this optical path device, also the big or small person of the overall weight of this optical scanning device of remote effect and volume.

Mostly the optical path device of commonly using in the optical scanning device is by four catoptrons this " light " to be done four times reflection, promptly, in the light path of " light ", after all only passing through primary event respectively on its each sheet catoptron, just image on this charge coupled cell via the gathering of camera lens, owing to include four catoptrons in this optical path device, therefore its volume not only, weight is all bigger, and cost is also higher, is with, the volume of this optical scanning device, weight and cost etc., also therefore can't effectively lower, so, stress gently in each electronic product a slice now, thin, short, under the little fashion, be difficult to break through the predicament in the marketing really.

Seven or eight No. sixteen application cases of TaiWan, China patent the 7th GA (being designated hereinafter simply as ＂ known techniques one ＂) once disclosed a kind of optical path device of optical scanning device, its inside is to be equiped with three catoptrons, by " light " enter optical path device in, be through two secondary reflections on first catoptron, and the reflection total degree that is somebody's turn to do " light " is four times, can therefore reduce the weight and the volume of optical path device.

Only, in aforesaid this known techniques one, owing to be somebody's turn to do two secondary reflections that " light " is carried out on this first catoptron, its reflection spot is not in same point, cause the volume of this first catoptron to need therefore to strengthen design on the contrary, so in fact the effect of the reduced volume that can reach and weight is quite limited.

Three or five No. eight application cases of TaiWan, China patent the eight or five 211 (hereinafter to be referred as ＂ known techniques two ＂) once disclosed the optical path device that a kind of prismatic glasses repeatedly reflects, its inside is to be equiped with three catoptrons, by above-mentioned three catoptrons in the configuration of its mutual relationship position and the improvement of reflection angle thereof, can make in above-mentioned three catoptrons has at least a catoptron to carry out repeatedly " light " of single-point multi-angle remission light source, promptly, its reflection spot of repeatedly reflection that is carried out on this catoptron is all in same point, just incident angle is different, therefore the volume of this catoptron can be little than known techniques one, yet known techniques two is also because its reflection spot is to be easy to generate the veiling glare phenomenon in same point.Therefore known techniques still has and much treats improved space in the design of the catoptron of optical path device.

The creation purpose:

Fundamental purpose of the present utility model is to provide a kind of optical path device of optical scanner, this optical path device is to comprise at least three catoptrons and have a catoptron at least to be to be double mirror, by the configuration of the mutual relationship position of above-mentioned three catoptrons and the improvement of angle, make " light " enter this reflector group back respectively at first reflecting surface of this double mirror and second reflecting surface through once reflection, because each reflecting surface all passes through primary event, therefore be difficult for producing veiling glare, the volume of each sheet catoptron does not need to strengthen yet in addition, therefore can reduce the volume of optical path device effectively, weight and cost.

The optical path device of optical scanner of the present utility model is to comprise a light source, a reflector group, a camera lens and a charge coupled cell.This light source provides this optical path device when carrying out optical image scanning needed " light "; This reflector group is to comprise at least three catoptrons, and the relative position of above-mentioned catoptron is through proper arrangement, so that receive " light " that above-mentioned light source transmits, and is passed to camera lens after will being somebody's turn to do the suitable reflection of " light " process; This camera lens be can receive " light " that above-mentioned reflector group transmits and be gathered in charge coupled cell on, and charge coupled cell is the scanning that this " light " is converted to the digital signals of the brain processing of can powering and finish image after receiving " light " that above-mentioned camera lens transmitted.Of the present utility modelly be characterised in that having a catoptron at least in the middle of the above-mentioned reflector group is to be double mirror, it comprises one first reflecting surface and one second reflecting surface, and " light " enter this reflector group after at least on first reflecting surface of this double mirror and second reflecting surface through once reflection.

Since the optical path device of scanner provided by the utility model can make " light " enter optical path device after through repeatedly reflection, therefore can obtain the less optical scanner of volume, in addition, its reflection spot of each catoptron is not in same point, therefore the veiling glare phenomenon can be do not produced, therefore the preferable scanner of quality can be obtained.

Further to understand and approval in order further the purpose of this utility model, feature and effect being had, to cooperate graphic explanation in detail as back now:

Graphic simple declaration:

Fig. 1 is the synoptic diagram of the optical path device of the utility model optical scanner.

Fig. 2 is that first of optical path device of the present utility model changes illustration.

Fig. 3 is that second of optical path device of the present utility model changes illustration.

Fig. 4 is that the 3rd of optical path device of the present utility model changes illustration.

Figure number explanation in graphic:

10～optical path device, 11～light source

121～the first reflectings surface, 122～the second reflectings surface

13～camera lens, 14～charge coupled cell

M1～first mirror M, 2～the second catoptrons

M3～the 3rd mirror M 4～the 4th catoptron

Describe in detail:

See also shown in Figure 1ly, it is the synoptic diagram of the optical path device of the utility model optical scanner.This optical path device 10 is to comprise a light source 11, a reflector group 12, a camera lens 13 and a charge coupled cell 14.

This light source 11 provides this optical path device 10 needed " light " (shown in dotted line among the figure) when carrying out optical image scanning, and this light source 11 is can be a microscler fluorescent tube.

This reflector group 12 is to comprise at least three catoptrons, present embodiment is to be that example is illustrated with three catoptrons, therefore this reflector group 11 is to comprise one first mirror M 1, one second mirror M 2 and one the 3rd mirror M 3, wherein this first mirror M 1 is to be double mirror, have one first reflecting surface 121 and one second reflecting surface 122, above-mentioned three catoptrons are through proper arrangement on relative position, so that receive " light " that above-mentioned light source 11 is transmitted, and be passed to camera lens 13 after will being somebody's turn to do the suitable reflection of " light " process.

This camera lens 13 be can receive " light " that above-mentioned reflector group 12 transmitted and be gathered in charge coupled cell 14 on, this charge coupled cell 14 is after " light " that the above-mentioned camera lens 13 of reception is transmitted, be to be somebody's turn to do " light " to convert the digital signals that the brain of can powering is handled to, and finish the scanning of image.

As can be seen from Figure present embodiment for three catoptrons of reflector group 12 in the arrangement of relative position, be to utilize first catoptron 121 of first mirror M 1 to receive the manuscript image (" light ": shown in dotted line) that is reflected when light source 11 scans, and this manuscript image is passed to second mirror M 2, after the reflection through second reflecting surface 122 of the 3rd mirror M 3 and first mirror M 1, at last this manuscript image is passed to camera lens 13 again.Therefore present embodiment can be described as follows for " light " travel path in optical path device inside: the second reflecting surface Kou of the first reflecting surface Jin M2 Jin M3 Jin M1 of light source Jin M1 calls on head, and the optical path device 11 of present embodiment is to utilize three catoptrons and through four secondary reflections as shown in the above description.

See also shown in Figure 2ly, it is that first of optical path device 10 of the present utility model changes illustration.The reflector group 12 of this variation example is to have four catoptrons, comprise one first mirror M 1, one second mirror M 2, one the 3rd mirror M 3 and one the 4th mirror M 4, wherein first mirror M 1 and the 3rd reflecting surface M3 are double mirror, have one first reflecting surface 121 and one second reflecting surface 122 respectively, this variation example is to utilize first reflecting surface 121 of first mirror M 1 to receive the manuscript image that is reflected when light source 11 scans, and this manuscript image is passed to second mirror M 2, again through the first reflecting surface 121a of the 3rd mirror M 3, second reflecting surface 122 of first mirror M 1, after the reflection of the second reflecting surface 122a of the 4th mirror M 4 and the 3rd mirror M 3, the manuscript image is passed to camera lens 13.Therefore this variations example can be described as follows for " light " travel path in optical path device 10 inside: second reflecting surface of second reflecting surface of first reflecting surface of first reflecting surface of light source → M1 → M2 → M3 → M1 → M4 → M3 → camera lens, the routine optical path device of this variation are to utilize four catoptrons and through six secondary reflections.

See also shown in Figure 3ly, it is that second of optical path device 10 of the present utility model changes illustration.The reflector group 12 of this variation example is to have four catoptrons, comprise one first mirror M 1, one second mirror M 2, one the 3rd mirror M 3 and one the 4th mirror M 4, wherein first mirror M 1 is to have one first reflecting surface 121 and one second reflecting surface 122 for double mirror, the reflector group 12 of this variation example can be described as follows through its light path path after the suitable position configuration: second reflecting surface of first reflecting surface of light source → M1 → M2 → M3 → M1 → M4 → camera lens, the routine optical path device of this variations are to utilize four catoptrons and through five secondary reflections.

See also shown in Figure 4ly, it is that the 3rd of optical path device of the present utility model changes illustration.The reflector group 12 of this variation example is to have four catoptrons, comprise one first mirror M 1, one second mirror M 2, one the 3rd mirror M 3 and one the 4th mirror M 4, wherein second mirror M 2 is to have one first reflecting surface 121b and one second reflecting surface 122b for double mirror, the reflector group 12 of this variation example can be described as follows through its light path path after the suitable position configuration: second reflecting surface of first reflecting surface of light source → M1 → M2 → M3 → M4 → M2 → camera lens, the routine optical path device 10 of this variations are to utilize four catoptrons and through five secondary reflections.

The utility model more can be designed to have five catoptrons or multiple reflection mirror more with the reflector group of optical path device according to the situation of reality, yet the heterogeneous order of reflection over the ground of the number of catoptron also can increase, be easy to produce the phenomenon of optical energy attenuation, therefore Special attention will be given to of the present utility model is to have the optical path device of double mirror, and focuses on the design of three or four catoptrons.In addition, catoptron of the present utility model is to make its surface have reflecting effect with plating mode, and is to adopt two-sided plating mode for the manufacture of double mirror, or the back side of two single face catoptrons fitted mutually and becomes double mirror.

Since the optical path device of scanner provided by the utility model can make " light " enter optical path device after, " light " can be in wherein through repeatedly reflection and then obtain the less optical scanner of volume, in addition, therefore its reflection spot of each catoptron can or not produce the veiling glare phenomenon in the same point with one side, and then obtains preferable scanning quality; Because the utility model two reflection spots can't occur on one side, therefore the volume of catoptron can be reduced again.

Certainly; the above only is the preferred embodiment of the optical path device of the utility model optical scanner; be not in order to limit practical range of the present utility model; anyly have the knack of this skill person and all should belong to the scope of this creation in the modification of making without prejudice to spirit of the present utility model, therefore protection domain of the present utility model when with described claim scope as foundation.

Claims (8)

1. the optical path device of an optical scanner is characterized in that, it comprises:

One light source provides this optical path device when carrying out optical image scanning needed " light ";

One reflector group comprises at least three catoptrons, and the relative position of above-mentioned catoptron is through proper arrangement, so that receive " light " that above-mentioned light source transmits, and will be somebody's turn to do " light " and do suitable reflection;

One camera lens is can receive " light " that above-mentioned reflector group transmits and be gathered in its focus place; And

One charge coupled cell is the focus place that is located at above-mentioned camera lens, and can receive " light " that above-mentioned camera lens assembles and convert the digital signals that the brain of can powering is handled to;

It is characterized in that: having a catoptron in the middle of the above-mentioned reflector group at least is to be double mirror, this double mirror is to comprise one first reflecting surface and one second reflecting surface, and " light " enter this reflector group after at least on first reflecting surface of this double mirror and second reflecting surface through once reflection.

2. the optical path device of optical scanner as claimed in claim 1, it is characterized in that: wherein this reflector group is

Comprise three catoptrons, i.e. first catoptron (M1), second catoptron (M2) and the 3rd catoptron (M3),

Wherein this first catoptron (M1) is to be double mirror, and " light " course in optical path device is by light

Second reflecting surface of first reflecting surface of source → M1 → M2 → M3 → M1 → camera lens.

3. the optical path device of optical scanner as claimed in claim 1, it is characterized in that: wherein above-mentioned catoptron is

Make its surface have reflecting effect with plating mode.

4. the optical path device of optical scanner as claimed in claim 1, it is characterized in that: wherein above-mentioned catoptron is

Comprise four catoptrons, promptly first catoptron (M1), second catoptron (M2), the 3rd catoptron (M3) and

The 4th catoptron (M4), wherein first catoptron (M1) is to be double mirror, " light " is in optical path device

Travel path is by second reflecting surface of first reflecting surface of light source → M1 → M2 → M3 → M1 → M4 → camera lens.

5. the optical path device of optical scanner as claimed in claim 1, it is characterized in that: wherein above-mentioned catoptron is

Comprise four catoptrons, promptly first catoptron (M1), second catoptron (M2), the 3rd catoptron (M3) and

The 4th catoptron (M4), wherein second catoptron (M1) is to be double mirror, " light " is in optical path device

Travel path is by second reflecting surface of first reflecting surface of light source → M1 → M2 → M3 → M4 → M2 → camera lens.

6. the optical path device of optical scanner as claimed in claim 1, it is characterized in that: wherein above-mentioned catoptron is

Comprise four catoptrons, promptly first catoptron (M1), second catoptron (M2), the 3rd catoptron (M3) and

The 4th catoptron (M4), wherein first catoptron (M1) and the 3rd catoptron (M3) they are to be double mirror,

" light " travel path in optical path device is first anti-by first reflecting surface → M2 → M3 of light source → M1

Penetrate second reflecting surface → camera lens of second reflecting surface → M4 → M3 of face → M1.

7. the optical path device of optical scanner as claimed in claim 1 is characterized in that: wherein above-mentioned reflector group

Double mirror be to form with two-sided plating mode manufacturing.

8. the optical path device of optical scanner as claimed in claim 1 is characterized in that: wherein above-mentioned reflector group

Double mirror be to fit mutually by the back side of two single face catoptrons to form.

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