Übersetzung für "Glanzwinkel" in Englisch

This information is also visible chiefly at the glancing angle.

In particular the Bragg reflector can be operated with an angle W3 of 90 degrees.

If it is transparent the engraved information can be easily read chiefly at the glancing angle.

The observation angle data relate to the difference from the specular angle (FIG. 7). TABLE 1

Strongly reflecting samples (ideal mirror case) reflect virtually the entire incident light at what is called the specular angle.

Accordingly, considerable lightness values ought still to be detectable even at measurement angles far removed from the specular angle.

Strongly reflecting samples (mirrors in the ideal case) reflect virtually all the incident light at what is called the specular angle.

Starting from the specular angle, the change in the reflection is considered over this large range of the viewing angle.

Thereafter, the residual gloss of the test specimens was determined by the Gardner Gloss method (DIN 67 530, gloss angle 60° C.).

Thereafter the residual gloss of the test specimens was determined by the Gardner Gloss method (DIN 67 530, gloss angle 60° C.).

Thereafter the residual gloss of the test specimens was determined by the Gardner Gloss method (DIN 67 530, gloss angle 60°).

A guided mode 8 is Bragg reflected at the diffraction grating 4 if the Bragg condition is fulfilled, i.e. the angle W3 is identical with the Bragg angle (cf. W. Lukosz and K. Tiefenthaler, Optics Letters 8 (1983), 537-539).

However, it has been found that these pigments, if a hue other than black is desired, are difficult to manufacture reproducibly and that in particular pigments having a particularly bluish hue, ie. a hue corresponding to a CIELAB quantity b*?-10 (measured at an angle difference of 20° to the gloss angle, standard illuminant D 65), are only producible haphazardly, if at all.

After the film had dried the CIELAB values were measured with a DATACOLOR spectrophotometer MCS 111 having a metallic measuring head GK 111 at an angle difference of 20°-70° to the luster angle.

The diffuse light formed at the scatter centers in the metal oxide layer on the one hand reduces the intensity at the glancing angle of the reflected portion of light and hence the color saturation, and on the other hand causes a whitening of the interference color.

Another important factor for the production of dark bluish pearl luster pigments having a b* value of ?-10 (measured at a 20° angle difference to the gloss angle, standard illuminant D 65) is the crystal structure of the TiO2 coating.

The light of the wavelength 1.3 ?m is beamed out in the fourth order at an angle of approximately 37° having a significantly lower diffraction efficiency (no Bragg angle).

After the film had dried, the CIELAB values were measured with a Multiflash goniospectrophotometer from Optronik at an angle difference of from 20° to 115° to the specular angle against a black background.

In the X-ray spectrum, at twice the Bragg angle 2?, it shows three strong lines at 6.6°, 13.9° and 26.5°, three moderate lines at 13.2°, 13.5° and 23.8°, and four weak lines at 17.1°, 20.5°, 25.2° and 28.6°.

If, for example, the colorant layer on the metal oxide coating is blue, the interference color is gold and the color of the substrate is red, then green is obtained on slight deviation from the glancing angle and a bluish silver is obtained on even greater deviation, while the mass tone is bluish violet.

If, for example, the colorant layer on the metal oxide layer is red, the interference color is gold and the color of the substrate is blue, then orange is obtained on slight deviation from the glancing angle and a reddish silver is obtained on even greater deviation, while the mass tone is reddish violet.

For coatings which are free from effect pigments, apart from the gloss angle and thus the associated vector in the colour solid also, the reflection factor is independent of the choice of the angle of illumination and the angle of observation.

Information 7 is also slightly recognizable at the glancing angle of the data carrier from any viewing direction because of the different surface structure of the embossed and unembossed areas.

The effects to be observed from different viewing directions (A, B, C) correspond to those in Example 3, only that in the present embodiment the optically variable element is not recognizable at the glancing angle of the data carrier or upon superficial viewing from directions other than B, C intended for detection of the data.

The film was dried and the CIELAB values were then measured using a Multiflash M 45 Gonio spectrophotometer from Optronik (Berlin) at an angular difference of 25° and 95° relative to the gloss angle.

The CIELAB coordinates were subsequently measured with a Multiflash M45 goniospectrophotometer from Optronik (Berlin) at an angle difference of 20°, 45° or 75° to the specular angle.