2017年11月14日星期二

LISUN engineers do installation & training in Turkey

LISUN engineers do installation & training in Turkey


In September 2017, LISUN Engineers do installation and training for customers in Turkey. This customer purchased a LSG-1800B High Precision Rotation Luminaire Goniophotometer and a set of LPCE-2 Integrating Sphere & Spectroradiometer Test System from LISUN. Here we share some photos below:

[caption id="attachment_8521" align="alignnone" width="800"]Figure 1: The LSG-1800B High Precision Rotation Luminaire Goniophotometer purchased by the customer Figure 1: The LSG-1800B High Precision Rotation Luminaire Goniophotometer purchased by the customer[/caption]

[caption id="attachment_8522" align="alignnone" width="800"]Figure 2: Customer, LISUN engineer and the LSG-1800B High Precision Rotation Luminaire Goniophotometer Figure 2: Customer, LISUN engineer and the LSG-1800B High Precision Rotation Luminaire Goniophotometer[/caption]

[caption id="attachment_8523" align="alignnone" width="800"]Figure 3: Customer, LISUN engineer and the LPCE-2 Integrating Sphere & Spectroradiometer Test System Figure 3: Customer, LISUN engineer and the LPCE-2 Integrating Sphere & Spectroradiometer Test System[/caption]

[caption id="attachment_8524" align="alignnone" width="449"]Figure 4: Customer, LISUN engineer and the LPCE-2 Integrating Sphere & Spectroradiometer Test System Figure 4: Customer, LISUN engineer and the LPCE-2 Integrating Sphere & Spectroradiometer Test System[/caption]

2017年11月10日星期五

LISUN engineer visit the United States to do installation & training in October 2017

LISUN engineer visit the United States to do installation & training in October 2017


 

At the end of October 2017, LISUN engineer Jacky once again set foot on the journey of installation & training for customers, and he arrived the Phoenix Sky Harbor International Airport Guide (PHX) on October 27. This customer purchased a LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer from LISUN this time.

 

About LSG-1800BCCD: LSG-1800BCCD Goniospectroradiometer is high precision automatic goniophotometric instrument for luminous intensity distribution measurements with facility for turning the light source. The LSG-1800BCCD can do the spatial CCT test when do the intensity distribution test. It is for industrial laboratory measurements the photometric data of luminaires such as LED luminaries, HID lamps, fluorescent lamps and so on. You can learn more at: http://www.lisungroup.com/product-id-383.html

 

Here we share some photos:

[caption id="attachment_8492" align="alignnone" width="800"]Figure 1: Jacky and the customer are installing the LSG-1800BCCD Figure 1: Jacky and the customer are installing the LSG-1800BCCD[/caption]

[caption id="attachment_8493" align="alignnone" width="800"]Figure 2: Jacky and the customer has finished the installation Figure 2: Jacky and the customer has finished the installation[/caption]

[caption id="attachment_8494" align="alignnone" width="800"]Figure 3: The customer is practicing the operation of LSG-1800BCCD Figure 3: The customer is practicing the operation of LSG-1800BCCD[/caption]

2017年11月8日星期三

IP Waterproof and Dustproof Rating Test

IP Waterproof and Dustproof Rating Test


Purpose of the test: to assess the ability of the material to prevent solids and liquids from entering the external shell
Detection range: electrical and electronic equipment, automotive aircraft and other parts

IP level (waterproof and dustproof) definition
IP waterproof and dustproof, refers to the protection level of electrical equipment, in accordance with its ability of preventing external objects intrusion, waterproof, moisture-proof and dustproof characteristics to be graded. The external objects include tools, human fingers, etc. which are not accessible to the live parts of the lamp to avoid electric shock. IP protection level is composed of two figures, the first number represents the level of dustproof ability for lamps, and the ability of preventing foreign objects intrusion; the second number represents the level of anti moisture and water for lamps. The larger the number is, the higher the degree of protection is. For example, IPXX.

The IP rating system provides a method for classifying products by the levels of waterproof, dustproof and anti-collision for electrical equipment and packaging. This system is approved by most European countries and was announced in IED529 (BS EN 60529: 1992) External Packing Protection level (IP code).

The degree of protection is mostly followed IP by two numbers, and the numbers are used to clarify the level of protection. The first figure indicates the extent of the equipment against the dust, or the extent to which people are protected from harm in a sealed environment. The second figure indicates the waterproof level of the device.

0 No protection
1 Can withstand solid material with length is more than 50mm. For example, hands accidentally touch; can withstand the vertical drop of water.
2 Can withstand solid material with diameter is more than 12mm, and length is no longer than 80mm. For example, fingers; can withstand a direct injection of water at a vertical angle of 15 °.
3 Can withstand solid material with diameter is more than 2.5mm. For example, tools or wires; can withstand direct jetting of water at a vertical angle of 60 °.
4 Can withstand solid material with a diameter is more than 1.0mm. For example, small wires; can withstand water spray from any direction- allowing limited access.
5 Dustproof, limited access (no harmful deposits). Can withstand low pressure water jet from any direction - allowing limited access.
6 Dust is difficult to enter, completely dustproof. Can withstand strong water column jet from any direction - allowing limited access.
7 Allowing for putting into 0.15m-1m depth water for a short time which can be up to 30 minutes.
8 Can withstand long-term soaking under pressure.

LISUN Engineer visit Brazil to do installation & Training In September 2017

LISUN Engineer visit Brazil to do installation & Training In September 2017


 

At the beginning of September 2017, LISUN engineer fly to Brazil immediately after the installation and training in the United States. LISUN Engineer stayed in Brazil for nearly half a month this time to do installation and training and meet several customers who are interested in LISUN products at the same time.

 

This article is for one of our customers in Brazil, the customer is a famous local lighting manufacturer, they build a new laboratory recently, and purchase some LED test equipments from LISUN. Such as LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer

, LPCE-3 Integrating Sphere & Spectroradiometer Compact LED Testing System, JL3456 Waterproof Test system and IK07-10 IK Level Tester.

 

LISUN engineer have designed the darkroom of the LSG-1800BCCD and operating room of JL-3456 waterproof test system for our customer. LISUN engineer spent 4 days here, the installation & training work smoothly, and LISUN service won the recognition of our customer

Finally we share some photos here:

[caption id="attachment_8467" align="alignnone" width="800"]Figure 1: LISUN engineer, our customer and LSG-1800BCCD Goniophotometer Figure 1: LISUN engineer, our customer and LSG-1800BCCD Goniophotometer[/caption]

[caption id="attachment_8468" align="alignnone" width="800"]Figure 2: Customers are practicing the operation of the LSG-1800BCCD Goniophotometer Figure 2: Customers are practicing the operation of the LSG-1800BCCD Goniophotometer[/caption]

[caption id="attachment_8470" align="alignnone" width="800"]Figure 3: LISUN engineer is training the LPCE-3 Integrating Sphere & Spectroradiometer Test System Figure 3: LISUN engineer is training the LPCE-3 Integrating Sphere & Spectroradiometer Test System[/caption]

[caption id="attachment_8471" align="alignnone" width="800"]Figure 4: LISUN engineer, our customer and LPCE-3 Integrating Sphere & Spectroradiometer Test System Figure 4: LISUN engineer, our customer and LPCE-3 Integrating Sphere & Spectroradiometer Test System[/caption]

[caption id="attachment_8472" align="alignnone" width="800"]Figure 5: LISUN engineer is training the JL3456 Waterproof Test System Figure 5: LISUN engineer is training the JL3456 Waterproof Test System[/caption]

[caption id="attachment_8473" align="alignnone" width="800"]Figure 6: LISUN engineer is training the IK07-10 IK Level Test System Figure 6: LISUN engineer is training the IK07-10 IK Level Test System[/caption]

2017年11月3日星期五

LISUN engineer visit Kenya to do installation & training in AUGUST 2017

LISUN engineer visit Kenya to do installation & training in AUGUST 2017


 

LISUN engineer visit Kenya to do installation and training for customer here in early AUGUST 2017 The customer purchased the LPCE-2 High Precision Spectroradiometer & Integral Sphere Test System (1.5m Constant Integrating Sphere) from LISUN this time.

 

Our engineers go to do installation and training all over the world almost every month, our customers are very satisfied with our service, which also contribute to more and more customers, and more and more business volume. We will provide customers with better products and better service in the future.

 

Here share some photos you:

 

[caption id="attachment_8429" align="alignnone" width="800"]Picture 1: LISUN engineer (Right second) with the customer Picture 1: LISUN engineer (Right second) with the customer[/caption]

[caption id="attachment_8430" align="alignnone" width="800"]Picture 2: LISUN engineer are training for customer Picture 2: LISUN engineer are training for customer[/caption]

[caption id="attachment_8431" align="alignnone" width="800"]Picture 3: LISUN engineer practice the operation for customer Picture 3: LISUN engineer practice the operation for customer[/caption]

2017年11月1日星期三

Integrating Sphere Work Principle

Integrating Sphere Work Principle


If the total flux of light enter integrating sphere is Φ, irradiate on the inner wall area S3 of the integrating sphere. The light diffuse on the surface of the inner wall several times. Examine the illumination of the inner wall at any point M. Since the light entering the integrating sphere directly illuminates at S3, one part of the light diffused by each point on the S3 will irradiate on the observation M point directly, the illuminance of all these light illuminated to point M is called the direct illumination, which is denoted by E0. In addition, there are some light diffused from S3 to each point on the inner wall of the integrating sphere by multiple diffuse reflections and then reach to point M, the sum illuminance of this part light is called multiple diffuse reflection illuminance, which is denoted by E∑. Thus, the illuminance E of the observation point M is the sum of the two parts of the illuminance: E=E0+E∑         (1-1)

Direct Illuminance E0 www.LisunGroup.cn

In the S3 range, take a small element dSA at any point A, the total luminous flux on this surface is dΦ, then the illuminance EA of the position A: EA=dΦ/dSA, the inner wall of integrating sphere can be seen as ideal Reflector, so the brightness LA at A: LA=EAρ/π(where ρ is the diffuse reflection coefficient). If take a small element dSM at observation position A , the luminous flux from the element dSA  with brightness LA to the element dSM: dΦA=LAdSAcosi1dSMcosi1’/rA2.

dE0=dΦA/dSM=LAdSAcosi1cosi1’/rA2=LAdSA/4R2 

The physical quantities in the formulas are shown in the figure. The figure also can show: i1=i1’, rA=2Rcosi1(R is the radius of the inner wall of the integrating sphere). The illuminance of the light emitted from element dSA at the observation position M: dE0=dΦA/dSM=LAdSAcosi1cosi1’/rA2=LAdSA/4R2.

 

The physical quantities in the formulas are given and sorted and the direct illuminance of the entire S3 diffuse light at M is obtained as follows: E0=ρ∫S3dΦ/4πR2=ρΦ/4πR2                    (1-2)

Φ in the formula is the total luminous flux into the integrating sphere.

Multiple diffuse reflections illuminance E∑

Firstly analyze the light that the direct light from S3 at any position N on the inner wall and then diffuse again and directly reaches the observation position M. This part is called an additional illumination E1.

Since N also gets the direct illumination E0, the luminance L0 is L0=ρE0/π. Take surface element dSN at point N, An additional illuminance dE1 formed at position M from dSN: dE1=dΦ1/dSN=L0dSNcosi2dSMcosi2’/ 4R2cosi2cosi2’ dSM =L0dSN/4R2

Diffused by the entire interior of the integrating sphere, the total primary illuminance E1 formed at position M: E1=ρE0∫SdSN/4πR2=ρE0S/4πR2=ρE0(1-f)S1/4πR

S1 is the area of the inner wall of the whole sphere; f is the opening ratio (f=S2/S1, S2 is the spherical area at the opening)

Substitute S1=4πR2into the above equation:E1=ρ(1-f)E0                     (1-3)

Follow the same method, we could derive the second illuminance E2, the third illuminance E3 and so on formed at the position M from the first illumiance inside the inner wall:

E2=ρ(1-f)E1=[ρ(1-f)]2E0

E3=ρ(1-f)E2=[ρ(1-f)]3E0  www.lisungroup.cn

In this way, multiple diffuse reflections total illuminance is: E∑=E1+E2+E3+……=E0ρ(1-f)/[1-ρ(1-f)]                    (1-4)

Thus, the total illuminance E at the position M is: E=E0+E∑=E0/[1-ρ(1-f)]                        (1-5)

Feed the formula (1-2) above, then we can obtain:

E=ρΦ/4πR2[1-ρ(1-f)]                   (1-6)

We can see from the above formula, the illuminance at any position on the inner wall is proportional to the total luminous flux entering the integrating sphere. This is the basic formula for applying the luminous flux integrating sphere.

Shanghai Lisun (India) New Delhi Office Exhibition 2016 New Delhi LED Lighting Exhibition

 

Shanghai Lisun (India) New Delhi Office Exhibition 2016 New Delhi LED Lighting Exhibition


 

In October 5th-7th 2016, New Delhi LED lighting exhibition held in New Delhi, the capital of India. As one of India's largest LED lighting exhibition, New Delhi LED lighting exhibition displays different lighting solutions, including LED chips, LED lamps, LED package, intelligent building lighting design and LED test equipment, etc..

 

In order to do better serve for customers in India, Lisun group India Office jointly participate participate in this exhibition and display the latest LED test technology and test equipment to customers. Lisun group have been in India market for 9 years, and have been cooperating with too many local customer. There are many new and old customers to visit our booth during the exhibition, and we negotiate a new cooperation with our colleagues in India. Lisun group focus on the LED test instrument began in 2003, we have cooperated with many famous lighting companies and third party inspection agencies on this way, and we will continue to provide the best lighting test solutions and services for the customers.

 

Here are some of the details of the show:

[caption id="attachment_8399" align="alignnone" width="286"]Shanghai Lisun (India) New Delhi Office Exhibition 2016 New Delhi LED Lighting Exhibition Shanghai Lisun (India) New Delhi Office Exhibition 2016 New Delhi LED Lighting Exhibition[/caption]