Daido Steel
Daido Steel has set itself as a pioneer in LEDs manufacturing by developing LEDs using the MOCVD method since 1985, long before MOCVD method became the major LEDs manufacturing method.
Daido Steel, also, has over 20 years of LED sales experience in the industrial machinery market, making it the perfect ally for your project.
- Technology Overview
- Product Lineup
Point Source LED (PSL)
High-performance point source LEDs, suitable for high accuracy sensors
Star LED (Daido's LED brand name) is a point source LED, used for high resolution optical encorders and photoelectrical sensors.
Comparison between Point Source LED and Surface Emitting LED
Point Source LED
Surface Emitting LED
Application
- Optical encoders
- Photoelectric sensors
- Semiconductor manufacturing equipment
- Medical testing equipment
- LED lighting
- Automative Headlights
- Backlights
Beam size
- Smaller beam size
- Higher light intensity per unit area
- Larger beam size
- Lower light intensity per unit area
Shadow of object
- Clear shadow
- No clear shadow
Technical advantages
High resolution and accuracy
Star LED (Point source)
General LED (Surface emission)
For optical encoder
- Shaper images
- Higher resolution
- Loose images
- Lower resolution
For photoelectric sensor
- Smaller beam size
- Higher precision
- Larger beam size
- Lower precision
High-temperature operation
- Flexibility in encoder thermal design with high temperature operation (105 degree).
- High reliability at high temperature and high current operation.
Applications
Infrared Point source LEDs
Wave length (nm) | Part number | Dimension (µm) | Light output (mW) | Cutoff frequency (MHz) | Features | |
---|---|---|---|---|---|---|
Light emitting window | Die size L x W x T | @50mA | @50mA ±20mA | |||
855 | MED8P51 | 170 x 50 | 590 x 370 x 250 | 2.0 | - | Oval shape window |
MED8P53 | φ60 | 370×270×250 | 2.0 | 45 | Small window | |
MED8P54 | φ160 | 490×310×250 | 2.4 | 25 | High reliability | |
MED8P56A | φ160 | 510×350×250 | 2.4 | 25 | Low stray light | |
MED8P62 | φ60 | 590×370×250 | 2.0 | 45 | Ball lens mountable | |
MED8P67A | φ60 | 400×300×250 | 2.0 | 45 | Small window Low stray light | |
MED8P73 | φ60 | 370×270×250 | 2.0 | 45 | 105℃ operation | |
MED8P74 | φ160 | 490×310×250 | 2.4 | 25 | 105℃ operation |
Red Point source LEDs
Wave length (nm) | Part number | Dimension (µm) | Light output (mW) | Cutoff frequency (MHz) | Features | |
---|---|---|---|---|---|---|
Light emitting window | Die size L x W x T | @20mA | @20mA ±10mA | |||
650 | MED7P2 | φ160 | 490×310×250 | 1.0 | - | High reliability |
MED7P3 | φ160 | 490×310×250 | 0.8 | 30 | High Speed | |
MED7P4 | 150x40 | 490×310×250 | 0.9 | - | Oval shape window | |
MED7P5 | φ150 | 370×220×180 | 0.9 | - | High reliability | |
MED7P7 | φ80 | 320×220×200 | 0.9 | - | Small window | |
MED7P14 | φ160 | 520×340×150 | 2.0 | - | High output |
LED package
Type | Part number | Wave length (nm | Beam angle | Output power (mW)
| Remarks | |
---|---|---|---|---|---|---|
FWHM(°) | @20mA | @50mA | ||||
Surface mount | MED7P14-SMF-1 | 650 | 130 | 5.7 | - | Thin |
Can | MED8P53-M18F-2 | 855 | 120 | - | 2.0 | TO-18 flat lens |
MED8P54-M46F-5 | 855 | 100 | - | 2.8 | TO-46 flat lens | |
MED8P54-M46L-2 | 855 | 4 | - | 4.0 | TO-46 dome lens |