Select rational projector note

1 testing worktable moving straightness, parallelism, perpendicularity, grating quality and accuracy, data processor quality, whether the number of hops, leakage.

Lighting lighting 2 projector, the crucial Oh; divided into 2 light transmission, reflection, there are very few desk projector share a lamp; commonly used for 12V150W, the Austrian autumn recommended brand Osram, Philips.

3 projection screen, travel of working table size can be customized, according to your own workpiece measurement needs; but to take into account the stability and harmony of the whole machine, general large workpiece must first with manufacturers and technical design staff to communicate and confirm. To ensure accuracy, but also guarantee the stability of the structure.

Focusing range 4 projector is generally between 80-100mm, focusing is one of the important parameters of the optical system; focusing effect directly affect the measurement results, especially the contour comparison measurement.

Projector vertical optical path system, work platform in the lifting process, because the weight of institutions as well as the table will cause the image on the screen to swing or even distorted, this is because the table lift system or single guide rail, and demanding the lifting process of the rise, under the tight loose; the two focusing or measuring surface in the measurement is not in the same plane is too large will error; now most of the manufacturers are not using dual rail elevating mechanism advanced. At present, only very few domestic manufacturers using this structure.

The 5 optical path suggested the use of reverse optical path difference between forward and reverse, the only measurement of habit.

6 see the light intensity on the screen, the illuminance around 5 point of view the projection screen is uniform ( how to detect if the author sells a crisis, if you want to know, please contact our service engineer ); deviation scale calibration of the optical system, the national standard is within the transmission within 0.08%, reflection 0.12%, a foreign brand reflection can be controlled within 0.09%.

7 at the same time to cooling system view projector, conventional one and two auxiliary fan.

8 see the projector body structure stability, the use of materials is jerry-built; even the thickness of the shell should be taken into consideration.

Three projector classification.

1 according to the optical principle divided into positive, negative two, traditional reverse; positive optical path is the two refractive prism in the optical path system based on the original theory to obtain, will cause the attenuation of light path.

2 according to the structure is divided into three:

Desktop, compact, small stroke, generally for the vertical optical path system;

Vertical, an optical axis is perpendicular to the work table;

Horizontal, lens optical axis parallel to the working table;

3 according to the projection screen size classification:

Φ300mm

Φ350mm

Φ400mm

Φ500mm

Φ600mm

Φ800mm

Φ1000mm

Φ1200mm

The 4 functions are divided into three by

Handwheel measurement - micrometer handwheel accuracy is low, did not move quickly

Digital - through the grating ruler displacement signal is converted to digital to analog signal processing results

Data processing by data processing software measurement results, and can export data.

According to the working table stroke divided 5

X*Y=50*50

X*Y=150*50

X*Y=200*100

X*Y=250*150

X*Y=250*200

X*Y=300*200

X*Y=400*300

Horizontal optical path of Y is Z.