What is the light distribution curve?
The so-called light distribution curve refers to the light source in the luminaire as the center of the sphere, and the section through the center of the sphere and the optical axis as the plane for drawing the light distribution curve. Popularly speaking, it is the spatial distribution of the luminous intensity of the lamps at various angles.
The illuminance of the luminaires in all directions is different. We can record the distribution of the luminaires in space by numbers and figures. These figures and figures can help us understand the outline of the luminosity distribution and use it to achieve strong illumination. , brightness and distance, height ratio and other lighting calculations.
Incandescent lamps, fluorescent lamps and other such lamps, with a light distribution of about 4Ï€, and similar to BCX Baochengxin LED fluorescent lamps and other LED lamps, because of the relatively strong directionality of the LED itself, the distribution of light only 2Ï€ space.
There are generally three ways to express the commonly used light distribution curve: one is the polar coordinate method, the other is the Cartesian coordinate method, and the third is the light intensity curve.
Polar coordinate distribution curve:
On the light metering plane passing through the center of the light source, the light intensity values ​​of the lamps at different angles are measured. From a certain direction, the light intensity of each angle is marked by a vector as a function of the angle, and the connection at the top of the connection vector is the polar coordinate light distribution curve of the lighting fixture.
If the luminaire has a rotational symmetry axis, the light intensity distribution curve on a grading surface passing through the axis can be used to illustrate the spatial distribution of the light intensity. If the light distribution of the luminaire in the space is asymmetrical, then The light intensity distribution curves of several metering planes can explain the spatial distribution of their light intensity.
Cartesian coordinate light distribution curve:
For concentrating lamps, since the beam is concentrated in a very small space solid angle, it is difficult to express the spatial distribution of the light intensity by polar coordinates, and the right angle is used to represent the light intensity from the light distribution curve. The horizontal axis represents the angle of the beam. If it is a luminaire with a symmetrical rotation axis, only one light distribution curve is needed. If it is an asymmetric luminaire, multiple light distribution curves are needed.
Equal light intensity map:
The curve connecting the tops of the vectors with the same light intensity is called the equal light intensity curve, and the values ​​of the adjacent light intensity curves are arranged in a certain ratio, and a series of equal light intensity curves are drawn to be called equal light intensity. Figure, commonly used diagrams have a circular network diagram, a rectangular network diagram and a positive arc network diagram.
Since the rectangular grid of FIG both described light intensity distribution of the lamp, can explain the light amount distribution of the region, so the current graph of the light intensity and other light cast with rectangular mesh are used in FIG.
Classification of luminaire light distribution curves: According to their symmetrical properties, they can usually be divided into three categories: axial symmetry, symmetry and asymmetric light distribution.
Axial symmetry:
Also known as rotational symmetry, it means that the light distribution curves in all directions are basically symmetrical, and general downlights and high bay lights are such light distributions.
symmetry:
When the C0° and C180° profiles of the luminaire are symmetrical, and the C90° and C270° profiles are symmetrical, such a light distribution curve is called symmetrical light distribution.
asymmetric:
It refers to the case where the distribution of light is asymmetric between C0°-180° and C90°-270°. Long strips of fluorescent lamps belong to the hundred symmetric space light distribution lamps.
According to the beam angle, the light distribution curve can be divided into narrow light distribution (<20°), medium light distribution (20°>40°) and wide light distribution (>40°).
LED fluorescent light distribution curve It refers to the light intensity distribution of the light source (or light fixture) in all directions of space. The test results are important data for judging the energy efficiency and utilization of the lamps. Generally, when foreign professional sellers purchase lamps, the light distribution curve is generally provided as a basic parameter.
The so-called light distribution curve refers to the light source in the luminaire as the center of the sphere, and the section through the center of the sphere and the optical axis as the plane for drawing the light distribution curve. Popularly speaking, it is the spatial distribution of the luminous intensity of the lamps at various angles.
The illuminance of the luminaires in all directions is different. We can record the distribution of the luminaires in space by numbers and figures. These figures and figures can help us understand the outline of the luminosity distribution and use it to achieve strong illumination. , brightness and distance, height ratio and other lighting calculations.
Incandescent lamps, fluorescent lamps and other such lamps, with a light distribution of about 4Ï€, and similar to BCX Baochengxin LED fluorescent lamps and other LED lamps, because of the relatively strong directionality of the LED itself, the distribution of light only 2Ï€ space.
There are generally three ways to express the commonly used light distribution curve: one is the polar coordinate method, the other is the Cartesian coordinate method, and the third is the light intensity curve.
Polar coordinate distribution curve:
On the light metering plane passing through the center of the light source, the light intensity values ​​of the lamps at different angles are measured. From a certain direction, the light intensity of each angle is marked by a vector as a function of the angle, and the connection at the top of the connection vector is the polar coordinate light distribution curve of the lighting fixture.
If the luminaire has a rotational symmetry axis, the light intensity distribution curve on a grading surface passing through the axis can be used to illustrate the spatial distribution of the light intensity. If the light distribution of the luminaire in the space is asymmetrical, then The light intensity distribution curves of several metering planes can explain the spatial distribution of their light intensity.
Cartesian coordinate light distribution curve:
For concentrating lamps, since the beam is concentrated in a very small space solid angle, it is difficult to express the spatial distribution of the light intensity by polar coordinates, and the right angle is used to represent the light intensity from the light distribution curve. The horizontal axis represents the angle of the beam. If it is a luminaire with a symmetrical rotation axis, only one light distribution curve is needed. If it is an asymmetric luminaire, multiple light distribution curves are needed.
Equal light intensity map:
The curve connecting the tops of the vectors with the same light intensity is called the equal light intensity curve, and the values ​​of the adjacent light intensity curves are arranged in a certain ratio, and a series of equal light intensity curves are drawn to be called equal light intensity. Figure, commonly used diagrams have a circular network diagram, a rectangular network diagram and a positive arc network diagram.
Since the rectangular grid of FIG both described light intensity distribution of the lamp, can explain the light amount distribution of the region, so the current graph of the light intensity and other light cast with rectangular mesh are used in FIG.
Classification of luminaire light distribution curves: According to their symmetrical properties, they can usually be divided into three categories: axial symmetry, symmetry and asymmetric light distribution.
Axial symmetry:
Also known as rotational symmetry, it means that the light distribution curves in all directions are basically symmetrical, and general downlights and high bay lights are such light distributions.
symmetry:
When the C0° and C180° profiles of the luminaire are symmetrical, and the C90° and C270° profiles are symmetrical, such a light distribution curve is called symmetrical light distribution.
asymmetric:
It refers to the case where the distribution of light is asymmetric between C0°-180° and C90°-270°. Long strips of fluorescent lamps belong to the hundred symmetric space light distribution lamps.
According to the beam angle, the light distribution curve can be divided into narrow light distribution (<20°), medium light distribution (20°>40°) and wide light distribution (>40°).
LED fluorescent light distribution curve It refers to the light intensity distribution of the light source (or light fixture) in all directions of space. The test results are important data for judging the energy efficiency and utilization of the lamps. Generally, when foreign professional sellers purchase lamps, the light distribution curve is generally provided as a basic parameter.
How to operate the Bamboo Diffuser ?
- 1. Position the Bamboo Diffuser upright, Pull vertically upwards to remove cover.
- 2. Connect AC adaptor power cord into the DC input jack at the base of the Bamboo Oil Diffuser. It is suggested to route cable via track provided.
- 3. Add water and Essential Oil into Aromatherapy Diffuser.DO NOT excess of ''MAX'' line. DO NOT use boiling water. DO NOT fill when power is on. It is recommended to add 2-3 drops of essential oil for each 100ml of water.
- 4. Put the cover back. Spout is adjustable to guide aroma into desired direction. Bamboo Essential Oil Diffuser must NOT be operated without the cover.
- 5. Connect AC adaptor with power from wall socket.
- 6. Press the "MIST" button to select the time of use as needed(ON continuous/3 hours/6 hours spray). The diffuser will automatically turn off at the specified time. To turn off immediately, long press the "MIST" button.
- 7. Press "LIGHT" to switch on LED light. Brightness is adjustable through the following cycle(Bright-Dim-Off).
- 8. It is recommended to drain water from tank and keep dry for extended idle period.
- 9. When connecting with power, the original state of Ultrasonic Diffuser is still off.
- 10. Misting operation and light will switch off automatically when there is insufficient water, even press "MIST", Aroma Diffuser is also switch off automatic.
Bamboo Diffuser
Bamboo Diffuser,Bamboo Oil Diffuser,Bamboo Essential Oil Diffuser,Aromatherapy Diffuser
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