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Examples of Investigation and
Measurement
Current dependency of LEDs and Laser Diodes
The dependency of the emitted light intensity on the electrical current
is investigated. Therefore several LEDs and a laser diode are provided.
Beam properties and polarization of LEDs and Laser Diodes
The strongly divergent beams of LEDs and laser diodes are
investigated concerning opening angle and ellipticity. With special
lenses beam shaping is performed to achieve special beam profiles like
for example laser lines.
Spectral properties of LEDs and Laser Diodes
Although based on the same principle of light generation the spectral
characteristics of LEDs and laser diodes are very different. By means of
an optical grating it shows that the spectral range of LEDs exceed the
range of laser diodes by far. Especially the spectrum of white light
LEDs is expanded over the whole visible range contrasting the almost
monochromatic laser light.
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OXP-20 Required Equipment |
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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. |
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1 |
02.1024 |
Carrier OCM 650, 20 mm with attached plate holder |
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| 1 | 02.1602 |
Screen with scale |
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02.2126 02.2132 |
Mounting plate OCM 650 for click 25, including carrier
20 mm |
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| 1 | 02.6106 |
4 axis adjustment holder KH650, theta, phi, X and Y,
including carrier 20 mm |
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1 1 1 |
04.0060 04.0090 04.0092 |
Plano convex
lens f=40
mm, mounted in click 30 mount |
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| 1 | 04.0702 |
Optical grating, 600 lines / mm This optical grating
copy mounted between two glass plates is used for
generating a spectrum of the investigated light. |
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05.0030 05.0032 05.0038 |
LED white in housing
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| 1 | 05.0232 |
DIMO diode laser module, 630 nm (red) Due to its divergin
beam, this red laser diode is used for beam shaping
experiments. The laser diode in its 40 mm x 25 mm
diameter housing tube, made out of special anodized
aluminum, can be fixed onto a four axis adjustment
holder and can be aligned to the optical axis. Driven by
the LDD-05 active power supply (07.0206), the output
power is controlled in the range from 0 to 3 mW. |
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| 1 | 07.0010 |
BNC – Banana adapter connection leads 2x4 mm plugs This BNC cable is used
to connect a photodetector (07.0101) to a digital
multimeter (19.0400). |
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| 1 | 07.0102 |
PIN Si Photodetector BPX 61 complete with housing Using a BNC cable, the photodetector can be connected to a measuring device. Mounted onto a special anodized aluminum click 25 head, the photodetector is to be used in connection with a mounting plate (02.2126). |
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| 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. |
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| 1 | 09.0044 |
Module polarization analyzer with mounting plate and rotation assembly In this unit, the high quality polarizer foil is inserted into a rotatable holder mounted onto a carrier. Using the rotating insert, the polarization direction can be set in degrees (0 - 360°) with a resolution of 2°. The unit is made out of special anodized aluminum. Mounted onto the carrier 20mm, it can be directly attached to the optical rails. |
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| 1 | 19.0400 |
Digital multimeter 3 ˝ digits
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