Examples of Investigation and Measurement

Calibration and measurement of several
liquids
With liquids of a known refraction indices the apparatus will be calibrated. Therefore the shadow line of the beam is observed on a screen with a scale. Liquids like water, acetone or glycerol are used for a first measurement. The values of the indices are compared to values found in literature and an estimation of the reliability can be done.

Measurement of solid materials
In the same way refraction indices of solid materials like glasses and crystals can be determined. For these measurements the material should have at least one plain and polished surface.

Measurement of solved sugar solutions
First measurements on sugar solutions with different concentrations of known values will be performed. In the next step the refraction index of a solution with an unknown concentration is measured. Through comparison with the series of measurements the concentration can be deduced.

OXP-06 Required Equipment
1	02.0500	Profile rail OCM 650, 500 mm The high precision optical rails are made out of special anodized aluminum. The rails are the base for various modules attached to carriers.
1	02.1022	Carrier OCM 650, 20 mm with screen holder This module can mount optical screens. Through the attached carrier, the screen holder can be placed onto the optical rail. The carrier 20 mm and the holder are made out of special anodized aluminum.
1	02.1606	Screen with vertical scale Experimental results like colour spectra and interference patterns can be visualized on these screens. Horizontal or vertical scales allow calibrations and quantitative measurements; a screen with an aperture is used for observing back-reflected rays. The screens are made out of anodized aluminum plates with one side painted white and can be fixed onto screen holders (02.1022, 02.1608).
2	02.2132	Mounting plate OCM 650 for click 30, including carrier 20 mm Mounting plates are used to hold optical mounts. A characteristic feature of the mounting plates is the “click” mechanism of the inserts based on spring loaded spheres. Snapping in the groove of the inserted click mount, the optical element is kept in an exact position. On the other hand, the system allows a quick and easy change of the mounted inserts. The mounting plates are made out of special anodized aluminum. Mounted onto the carrier 20 mm, the mounting plates can be placed onto an optical rail.
1	02.6106	4 axis adjustment holder KH650, theta, phi, X and Y, including carrier 20 mm This adjustment holder mounts a Diode Laser or an LED lamp. Using the fine pitch adjustment screws, the optical axis can be aligned within the range of 3 mm. For fine alignment of the angle of the light beam, two additional pitch adjustment screws are attached onto the back of the holder. The holder and the carrier 20 mm are made out of special anodized aluminum and can be placed onto an optical rail.
1	04.0051 04.0060	Biconvex lens f=100 mm, mounted in click 30 mount Plano convex lens f=40, mounted in click 30 mount Different glass lenses are mounted onto a special anodized aluminum click mount 25 mm by two threaded mounting rings to be used in connection with a mounting plate (02.2126).
1	04.0108	Polarizer in click 30 mount A polarizer high quality plastic foil is mounted onto a special anodized aluminum click mount 30 mm by two threaded mounting rings to be used in connection with a mounting plate (02.2132). The unit is used to polarize the light of an unpolarized light source and can be directly attached to the optical rails.
1	05.0034	LED yellow in housing As universal and easy-to-change light sources, LED lamps are used in optical experiments. The LEDs are mounted onto a 40 mm x 25 mm diameter housing tube made out of special anodized aluminum. For the alignment, the lamps can be fixed onto a four axis adjustment holder mounted onto a carrier. For their operation, the active LDD-05 power supply (07.0206) is required which controls the output power. For the lamps 1 W (white LED: 3W), high brightness LEDs are used.
1	07.0206	LDD-05 active power supply The universal LDD-05 active power supply is used for all laser and LED light sources. It recognizes which source is connected and sets the parameters for it automatically. The unit is equipped with a main switch, a regulation knob for adjusting the laser or LED power and a safety lock. The provided USB bus interface allows control through a personal computer or laptop and qualifies this unit as multimedia source. The housing is made out of shock-proof plastic with an aluminum front and rear panel. Voltage: 230 VAC / 50 Hz Case dimensions: 200 mm x 160 mm x 62 mm.
1	09.1620	Dove prism assembly This unit consists of a modern realization of a refractometer arrangement using a dove prism as the optical element. For cleaning purposes, the prism can be easily removed. The unit is mounted onto a holder with carrier 65 mm and can be directly attached to the optical rail. The metal parts are made out of special anodized aluminum. The dove prism is made out of the high refractive index glass SF10. Dimensions: 26 mm height, 20 mm thickness Window area for measurements: 20 mm x 20 mm Base angle: 60°.