Examples of Investigation and Measurement

Alignment of the system
The experiments begin with the positioning and alignment of all the optical modules. Placing them in the proper way will allow imaging an inserted mask on a screen or on a white wall.

Lens equation
By varying the distances of the modules or by changing the objective lens the image can be changed in size. On this set-up the lens equation is demonstrated impressively. Magnification as well as 1f- and 2f-arrangements are discussed.

Spatial selection
With a variable aperture the light beam can be pinched at different positions on the optical bench. Filtering close to the mask is spatially selective, whereas filtering in the region of the lamp image attenuates the whole picture.

OXP-18 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	02.1024	Carrier OCM 650, 20 mm with attached plate holder Using a spring loaded blade 50 x 50 mm, plates like filters or gratings can be fixed onto this module. The carrier allows the direct attachment to the optical rail. The carrier 20 mm and the holder are made out of special anodized aluminum.
1	02.1601	Screen with 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 1	02.2132 02.2150	Mounting plate OCM 650 for click 30, including carrier 20 mm Mounting plate OCM 650 for click 50, 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 1 1 1	04.0051 04.0053 04.0060 04.0062	Biconvex lens f=100 mm, mounted in click 30 mount Biconvex lens f=150 mm, mounted in click 30 mount Plano convex lens f=40 mm, mounted in click 30 mount Plano convex lens f=60 mm, mounted in click 30 mount different glass lenses are 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).
1	04.0310	Iris aperture mounted in click 50 mount, max. opening 36 mm The continuously adjustable laminar aperture limits the diameter of the beam from 2 mm to a maximum of 36 mm. The iris aperture is mounted onto a special anodized aluminum click mount 50 mm by a threaded mounting ring to be used in connection with a mounting plate (02.2150).
1	04.0808	Colour slide # 18 This colour slide is used in a setup, demonstrating the function of optical projectors. The frame has a size of 50 mm x 50 mm x 3 mm and the slide window is 20 mm x 20 mm.
1	05.0030	LED white 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.