Klara Wenzel

Color and luminance contrast sensitivity function of people with anomalous color vision

The experience of a colored picture is formed of the multitude of spots of different colors and shapes projected on the retina of the eye. The more spots we can distinguish the more details we can see and the more information we can get. It can be observed that people of anomalous color vision are at a disadvantage not only from the point of view of the correct recognition of colors but also from that of seeing less detailed than do that of normal trichromats. It is rather difficult to measure the detail of colored pictures formed by seeing. It is practical to carry out the measuring with simplified geometry and in limited colors. The most simple test picture is the grating and it is best to limit the colors to two and to their additive mixtures respectively. The color contrast sensitivity function (CCFS) can be well used to prove that people of anomalous color vision can distinguish less details than those of normal trichromats. Besides this the effect improving color vision (e.g. by color vision correction filters) can also be proved. Several examinations can be made by gratings created with two colors and by changing their various parameters . We have got appreciable data by changing space frequency and contrast, and redefining colored gratings to the CCSF already known in the examination of sight testing. Thereby we succeeded in demonstrating the difference between normal and anomalous trichromats.

New computer-controlled color vision test

A computer controlled color discrimination test is described which enables rapid testing using selected colors from the color space of normal CRT monitors. We have investigated whether difference sin color discrimination between groups of normal and color deficient observers could be detected using a computer-controlled test of color vision. The test accurately identified the differences between the normal and color deficient groups. New color discrimination test have been developed to more efficiently evaluate color vision.

Unique interferometer experiment for controlling the theory of relativity

Although modern theoretical physics states that the velocity of light does not add to the velocity of the light source, and so according to Einsteins theory the velocity of light is independent of the coordinate system, from time to time scientists try to disprove this axiom. We tried to build the most accurate experimental setup according to our technology.

Alignment Aspects Of The Optical System On The VEGA Spacelabs

The optical systems of VEGA spacelabs, each consisting of a wide-angle lens telescope and a small-angle mirror telescope, were adjusted on Earth before launching in such a way that they projected pictures of co let Halley onto COD matrix detectors not only in high quality but also appearing in the same angular position. The alignment and testing methods used in this project are described and some pictures delivered by the system are shown.