Active substance: Hydroxyzine
The iris is installed 80 mm from the xenon lamp and the stainless steel leaves prevent changes in the radiant light of the lamp.
Filter Wheel and Controller The exit wavelengths vary based on the substance being examined. The filter wheel seen in Figure 7 was developed in order to provide appropriate wavelengths for a given research subject.
Many compounds absorb ultraviolet UV or visible Vis light. The relationship between absorbance and transmittance is illustrated in Figure 10.
If all the light is absorbed, then the percentage transmittance is zero, and the absorption is infinite. Typically, there are several dielectric stacks separated by spacer layers, and each dielectric stack is composed of a large number of alternating layers of low-index and high-index dielectric material.
These reflecting stacks are constructed from alternating layers of high and low refractive index materials, which can have a reflectance in excess of 99.
The constructive interference conditions of a Fabry-Perot cavity allow light at the central wavelength, and a small band of wavelengths to either side, to be transmitted efficiently, while destructive interference prevents the light outside the pass-band from being transmitted.
However, the band of blocked wavelengths on either side of the central wavelength is small. The fluorescence imaging system is comprised of 3 filters of 450, 530, and 633 nm.
Table 2 shows the relationship between the wavelength and absorbance. Brightness, light distribution, and color temperature tests were performed after the quantity of light was adjusted in the maximum output, using an illuminator CL-200, Minolta located 5 cm from the output adaptor.
Light Source Electrical Characteristics The electrical characteristics of quartz xenon arc lamps are complex, as they include characteristics such as the voltage-current V-I curve, trigger ability, and dynamic resistance.
The primary electrical characteristic of a short arc lamp is the V-I curve, and Figure 13 b shows the average V-I curve for the xenon lamp.
This curve is derived from the actual average lamp voltage and current, as measured after lamp ignition and while the lamp current was slowly varied.