What is Beam Spread
Beam spread is the dispersion or diffusion of light emitted from a flashlight or light fixture. It is a measurement of the angle at which the light beam spreads out from the center, determining the coverage area and intensity of the light. The beam angle is a specific value that indicates the angle of beam spread from the center of the beam. It is measured by drawing an imaginary line from the center of the light source to the point where the light intensity at the outer edges of the beam drops to 50 percent of the maximum. A narrow beam angle is characteristic of a spotlight, providing focused and concentrated illumination for smaller areas. In contrast, a wider beam angle is typical of a floodlight, dispersing light over a larger area.
Additionally, the field angle is a measurement of the angle from the centerline of the beam to a point where the light intensity is significantly reduced, usually around 10 percent of the maximum. This angle, also known as the cut-off angle, indicates the effective lighting area of a light bulb or fixture design.
Mencari Solusi Hemat Energi Berbasis Sensor Gerak?
Hubungi kami untuk sensor gerak PIR lengkap, produk hemat energi berbasis sensor gerak, sakelar sensor gerak, serta solusi komersial Occupancy/Vacancy.
Beam spread values are typically expressed in terms of angles rather than distances. Lighting designers utilize these angles to determine the placement of fixtures in a space, considering factors such as desired light intensity and color temperature. By analyzing the beam and field angle data, designers can achieve optimal coverage and distribution of light in a given area.
Mungkin Anda Tertarik Dengan
- Ceiling-mounted PIR occupancy sensor dengan output dry-contact relay
- Suplai tegangan rendah 12/24VDC atau 12/24VAC
- Kontak relai terisolasi COM, NO, dan NC untuk input EMS, HVAC, dan kontrol gedung
- Low-voltage DC recessed ceiling-mounted microwave motion sensor switch
- Input 12 VDC / 24 VDC dengan rentang 10-30 VDC
- Arus kerja maks 10A dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Higher-load recessed ceiling-mounted microwave motion sensor switch
- Input tegangan jala-jala 100-265 VAC, model 10A
- Penginderaan gelombang mikro 5.8 GHz dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Recessed ceiling-mounted microwave motion sensor switch
- Input tegangan jala-jala 100-265 VAC, model 5A
- Penginderaan gelombang mikro 5.8 GHz dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Ceiling-mounted RZ037 PIR occupancy sensor dimmer untuk daya 220V
- Arus kerja maksimum 3A dengan beban pengenal 660W
- Tombol LUX mengontrol ON/OFF sensor cahaya dan kecerahan peredupan yang diatur pengguna
- Ceiling-mounted RZ037 PIR occupancy sensor dimmer untuk daya 110V
- Arus kerja maksimum 3A dengan beban pengenal 330W
- Tombol LUX mengontrol ON/OFF sensor cahaya dan kecerahan peredupan yang diatur pengguna
- Sakelar sensor gerak gelombang mikro plafon DC tegangan rendah
- Input 12 VDC / 24 VDC dengan rentang 10-30 VDC
- Arus kerja maks 10A dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Sakelar sensor gerak gelombang mikro plafon beban lebih tinggi
- Input tegangan jala-jala 100-265 VAC, model 10A
- Penginderaan gelombang mikro 5.8 GHz dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Sakelar sensor gerak gelombang mikro plafon
- Input tegangan jala-jala 100-265 VAC, model 5A
- Penginderaan gelombang mikro 5.8 GHz dengan waktu tunda (time delay), ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Sakelar sensor gerak PIR tanam plafon DC tegangan rendah
- Input 12 VDC / 24 VDC dengan rentang 10-30 VDC
- Arus kerja maks 10A dengan jeda waktu, ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Sakelar sensor gerak PIR tanam plafon beban lebih tinggi
- Input tegangan jala-jala 100-265 VAC, model 10A
- Deteksi 360 derajat dengan jeda waktu, ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Sakelar sensor gerak PIR tanam plafon
- Input tegangan jala-jala 100-265 VAC, model 5A
- Deteksi 360 derajat dengan jeda waktu, ambang batas Lux, dan sensitivitas yang dapat disesuaikan
- Kit penerima dan sakelar nirkabel untuk kontrol pencahayaan ON/OFF dalam ruangan
- Penerima 100-230VAC, 50/60Hz dengan arus nominal 5A
- Sakelar nirkabel bertenaga CR2032 dengan komunikasi 2.4GHz
- Okupansi (Auto-ON/Auto-OFF)
- 12–24V DC (10–30VDC), hingga 10A
- Cakupan 360°, diameter 8–12 m
- Jeda waktu 15 dtk–30 mnt
- Sensor cahaya Mati/15/25/35 Lux
- Sensitivitas Tinggi/Rendah
- Mode okupansi Auto-ON/Auto-OFF
- 100–265V AC, 10A (diperlukan kabel netral)
- Cakupan 360°; diameter deteksi 8–12 m
- Jeda waktu 15 dtk–30 mnt; Lux MATI/15/25/35; Sensitivitas Tinggi/Rendah
- Mode okupansi Auto-ON/Auto-OFF
- 100–265V AC, 5A (diperlukan kabel netral)
- Cakupan 360°; diameter deteksi 8–12 m
- Jeda waktu 15 dtk–30 mnt; Lux MATI/15/25/35; Sensitivitas Tinggi/Rendah
- 100V-230VAC
- Jarak Transmisi: hingga 20m
- Sensor gerak nirkabel
- Kontrol berkabel
- Tegangan: 2x Baterai AAA / 5V DC (Micro USB)
- Mode Siang/Malam
- Jeda waktu: 15mnt, 30mnt, 1j (bawaan), 2j
- Adaptor daya colokan UE
- Adaptor daya colokan Inggris
Frequently Asked Questions
Why Does a Light Beam Spread
As the light beam moves away from the surface it is directed at or when the beam width is increased, it naturally spreads out and its intensity decreases. This phenomenon can be observed when using a torch and adjusting its distance from a wall, as the spread and intensity of the light will vary accordingly.
What Is Beam Spread Measured In
The measurement of beam spread refers to the diameter of the light projected onto the subject. To put it simply, if you were to shine a flashlight on a wall, the width of the illuminated circle would represent the beam spread. This measurement is typically expressed in feet. In the context of this discussion, we define beam spread as the area that receives 50% of the light power.
What Is the Beam Spread of a Flood Light
Flood lights typically have a beam spread ranging from over 45 degrees to approximately 120 degrees. Nevertheless, it is worth noting that certain lights advertised as floods may have a narrower beam angle of around 25 degrees. If you specifically require a light with such a narrow beam, it may be more suitable to consider spotlights instead.
What Beam Spread for Ceiling Height
Overlapping beam angles are important to ensure that the entire space is adequately illuminated, reducing the risk of accidents. For ceilings with a standard height of approximately 7.9 to 8.9 feet, a wider beam angle of 60 degrees or more is suitable. However, if your ceiling height exceeds 8.9 feet, a narrower beam angle of 45 degrees or less will be necessary.
What Happens When the Light Is More Spread Out
Light spreads out in a similar manner to how butter spreads from a gun. In other words, as light moves away from a point source, its intensity decreases due to its increased dispersion (similar to the decreased thickness of butter).
