CN200975888Y

CN200975888Y - Image projector

Info

Publication number: CN200975888Y
Application number: CN 200620013545
Authority: CN
Inventors: 许智钦; 魏自勇
Original assignee: 3DFAMILY TECHNOLOGY (SHENZHEN) Co Ltd
Current assignee: 3DFAMILY TECHNOLOGY (SHENZHEN) Co Ltd
Priority date: 2006-04-12
Filing date: 2006-04-12
Publication date: 2007-11-14
Anticipated expiration: 2016-04-12

Abstract

The utility model relates to an image projector, which comprises a platform, a lens perpendicular to the platform, an imaging device, a monitor and a couple of light sources with the axis of the lens as the axis. Wherein a first light sources is adhered on the lens. A second light source faces the first light source, and the second light source is positioned on the platform together with the first light source. The first and the second light sources are high power light emitting diode. The monitor is the liquid crystal display without the isolated layer, which has the adjustable angle about 15 degrees. The lens can be shift up and down by the adjusting member of the Z-shape axis, which is the continuous zoom lens. The imaging device is the charged coupled device (CCD). Embodiment of the image projector provided by the utility model can project the image more clearly and exactly.

Description

The image projecting instrument

Technical field

The utility model relates to projector, more particularly, relates to a kind of image projecting instrument.

Background technology

The image projecting instrument is a kind of surveying instrument, and, complex contour little to volume, the workpiece that can not add external force utilize the optical projection principle, and the profile of measured workpiece or surface projection to display screen, are measured and compare.At present, the image projecting instrument adopts Halogen lamp LED as light source, the irradiation measured workpiece; Used display screen is the cathode ray tube (CRT) display screen; Imaging device is the object lens of single multiplying power; Be that the whole platform of putting workpiece is moved up and down during focusing, to adapt to the focus of imaging device.Since Halogen lamp LED when lighting temperature higher, for some less or thermally sensitive workpiece, may cause surface deformation, the working time of Halogen lamp LED had only about 50--200 hour simultaneously, the life-span is shorter, the variation of brightness causes that image error is big, low precision; Single multiplying power object lens make in the time of must changing multiplying power will change camera lens, might the operator just can not find the camera lens of suitable multiplying power, and can not get than distinct image; Owing to be that entire working surface moves together, weight is big, is unfavorable for accurate location during focusing; Because its imaging mode is optical projection, its surface is comparatively fuzzy, low precision.The shortcoming of above several respects all can show as and make show image blurring, deterioration in accuracy at last.

The utility model content

The technical problems to be solved in the utility model is, at the defective of above-mentioned image blurring, the low precision of prior art, provides a kind of clear picture, image projecting instrument that precision is high.

The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of image projecting instrument, comprise platform 12, camera lens 9, imaging device, display screen 7 and be a pair of light source of axis with the camera lens axis, wherein first light source 8 is attached on the camera lens 9, and right, described first and second light sources adopt large-power light-emitting diodes in opposite directions for secondary light source 18 and above-mentioned light source 8

In image projecting instrument described in the utility model, the power of described secondary light source 18 is 0.8 to 1.2 watt, and the power of described first light source 8 is 60 to 100 milliwatts.

In image projecting instrument described in the utility model, described display screen 7 is the LCDs of no separation layer.

In image projecting instrument described in the utility model, described display screen 7 is installed in one three limit and is connected on the organ type dust cover 10, and another side is fixed in the framework on the display mounting platform by axle 13, and described organ type dust cover 10 can draw in and draw back.

In image projecting instrument described in the utility model, described camera lens 9 is fixed on the Z axle governor motion 4, moves with the adjusting of Z axle governor motion 4.

In image projecting instrument described in the utility model, described camera lens 9 is the continuous variable zoom lens of 20 to 120 times of continuous vari-focus.

In image projecting instrument described in the utility model, described imaging device is Charge Coupled Device (CCD) (Charged Coupled Device CCD).

Implement image projecting instrument of the present utility model, have following beneficial effect: because light source is without Halogen lamp LED, use light emitting diode instead, workpiece can temperature distortion, and is longer than Halogen lamp LED the serviceable life of LED source; The adjusting of Z axle governor motion makes camera lens move up and down focusing, only needs to drive camera lens, and is in light weight, and the location accurately; The camera lens variable focal length does not need to change camera lens when adjusting multiplying power, simple, convenient, avoids the error because of changing camera lens or bringing because of the camera lens that can not find suitable multiplying power a period of time; Use Charge Coupled Device (CCD) (Charged Coupled Device CCD), to make imaging clearer as imaging device; LCDs adjustable pitching angle makes the people of different heights can clearly read image.So can show image clear, accurately.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the left view of the utility model first example structure synoptic diagram;

Fig. 2 is the front view of the utility model first example structure synoptic diagram;

Fig. 3 be among the utility model first embodiment the organ type dust cover by the left view after drawing back;

Fig. 4 is the structural representation of the forward sight of the utility model second embodiment;

Fig. 5 is the structural representation of the backsight of the utility model second embodiment.

Embodiment

As depicted in figs. 1 and 2, in first embodiment of the present utility model, the axis normal of first light source 8 and secondary light source 18 is in platform 12, workpiece is put on platform 12, secondary light source 18 (is covered by platform 12 among the figure, can be referring to Fig. 3) by the bottom of platform 12 from lower to upper according to, because secondary light source 18 adopts powerful light emitting diode, driving voltage is 5V, and drive current is about 800mA, its power is about 1 watt, illumination is 8000-13000mcd, therefore, has both satisfied the demand of illumination, light emitting diode does not have and can generate heat, long-time just the use the advantage of workpiece temperature distortion can not occur, thereby the exterior contour imaging of workpiece is perfectly clear, accurately.And first light source 8 is owing to be attached on the camera lens, can not use too strong light, otherwise be prone to over-exposed and cause that imaging surface is anti-white, can not obtain distinct image on the contrary, so only used the light emitting diode of about 80mW, its driving voltage also is 5V, drive current is about 100mA, illumination is 8000-10000mcd, makes the intensity of illumination of surface of the work keep suitably obtaining surface of the work imaging clearly.

Above-mentioned platform 12 can move left and right or is moved forward and backward, promptly move and move along y-axis shift along X-axis, what regulate that this both direction moves is respectively X-axis gear train 3 and Y-axis gear train 11, the purpose that this both direction moves is that workpiece is entered in the imaging scope of camera lens 9, and obtains visual angle preferably.As everyone knows, sometimes when doing workpiece contrast or measuring, be not requirement with all imagings of whole work-piece, comparatively pay attention to some details on the contrary, so the adjustment at visual angle is very important.On common projector, it is moving along the Z axle of Z axle travel mechanism 4 generations that a mechanism that platform 12 is moved up and down can also be arranged on platform 12, and the purpose of Yi Donging is that camera lens can be focused like this, obtains distinct image.But owing to driven platform 12 and workpiece when mobile like this, weight is big, move and power that locking platform 12 and workpiece are required also just big, cause the location out of true.So in the utility model, platform 12 and Z axle travel mechanism 4 are not linked together, and the camera lens fixed mount of camera lens 9 with Z axle travel mechanism 4 connected together with screw, when regulating Z axle travel mechanism, have only the camera lens 9 and first light source 8 to move thereupon, because the camera lens 9 and first light source 8 add that than platform 12 workpiece is gently many, the power that needs when moving and locking is less, so the location is just accurate on the Z axle, it is also comparatively convenient to regulate.

Because the size of workpiece can't be fixed in practicality, use same camera lens to do the profile imaging of a big workpiece and the profile imaging of a small workpiece is inappropriate, having at least a meeting image blurring, traditional method to occur causing because enlargement factor is improper is to change camera lens.In the utility model, camera lens 9 adopts 20--120 variable focal length doubly, and is convenient for users to use, can obtain suitable enlargement factor, thereby obtains distinct image.Owing to use first light source 8 of light emitting diode to impinge upon surface of the work, make workpiece produce the variation of different brightness with its different feature in surface, amplify with suitable ratio through camera lens 9, be loaded on the Charge Coupled Device (CCD) (Charged Coupled Device CCD) behind the camera lens 9,1/3 inch, the CCD of 400,000 pixels, obtain and be converted to digital electric signal, be transferred to imaging on the LCDs 7, because light signal has converted electric signal in transmission course, in transmission, just there is not optic distortion, so the projection of surface or profile is all very clear, accurately, can increase substantially measuring accuracy.Be real pure flat owing in the utility model, having used LCDs 7, this display surface again, the distortion in shape that occurs when also just not showing, adding on the LCDs 7 does not have separation layer, so two workpiece directly can be contrasted.

Organ type dust cover 10 is by the left view after drawing back in first embodiment of the present utility model shown in Fig. 3, the left side of the housing 14 of immobile liquid crystal display screen, right and toply all be connected by organ type dust cover 10 by the bonding mode of screw retention that adds, the following of the housing 14 of LCDs then is fixed on the display mounting platform 15 by axle 13.Among the figure, organ type dust cover 10 is drawn back, and the axle 13 of fluid,matching crystal display 7 lower ends is fixed on the position of drawing back with the upper end of LCD 7.Because axle 13 is fixed, the lower end of LCD 7 can not moved, and be that rotate in the axle center with the moving of upper end of LCD 7 with axle 13 just, so reach the purpose of the angle of pitch of adjustment LCDs 7.When organ type dust cover 10 was opened to maximum, the angle of pitch of LCDs 7 also was transferred to maximum.Said apparatus can be about 15 degree any angle of pitch of regulator solution crystal display 7.Can make the operating personnel of differing heights can both find the visual angle that is fit to own height, clear, observe workpiece image on the LCDs 7 easily.

Fig. 4, Fig. 5 be second embodiment of the present utility model forward sight, backsight connect the structure synoptic diagram, because of showing the position of camera lens 9 and secondary light source 18, an angle is arranged on the visual angle.By finding out among the figure, second embodiment compares with first embodiment, except that with the axis direction of camera lens 9 and secondary light source 18 by first embodiment perpendicular to platform 12 change into be parallel to platform 12, Z axle governor motion 4 positions have the adjustment, all the other do not become.

Claims

1, a kind of image projecting instrument, it is characterized in that, comprise platform (12), camera lens (9), imaging device, display screen (7) and be a pair of light source of axis with the camera lens axis, wherein first light source (8) is attached on the camera lens (9), and right, described first light source (8) and secondary light source (18) adopt large-power light-emitting diodes in opposite directions for secondary light source (18) and above-mentioned first light source (8).

2, image projecting instrument according to claim 1 is characterized in that, the power of described secondary light source (18) is 0.8 to 1.2 watt, and the power of described first light source (8) is 60 to 100 milliwatts.

3, image projecting instrument according to claim 1 is characterized in that, described display screen (7) is the LCDs of no separation layer.

4, image projecting instrument according to claim 3, it is characterized in that, described display screen (7) is installed in one three limit and is connected on the organ type dust cover (10), another side is fixed on display screen on the display mounting platform (15) fixedly in the housing (14) by axle (13), and described organ type dust cover (10) can draw in and draw back.

5, image projecting instrument according to claim 1 is characterized in that, described camera lens (9) is fixed on the Z axle governor motion (4), moves with the adjusting of Z axle governor motion (4).

6, image projecting instrument according to claim 1 and 2 is characterized in that, described camera lens (9) is the continuous variable zoom lens of 20 to 120 times of continuous vari-focus.

7, image projecting instrument according to claim 1 and 2 is characterized in that, described imaging device comprises Charge Coupled Device (CCD).