TECHNOLOGY & QUALITY

Leimac Lighting

Lighting Solutions Backed by System Integration Expertise

1. Design support utilizing expertise in mechanics, electronics, control systems,and programming
2. Capable of planning, designing, and manufacturing complete inspection systems
3. In-house assembly and machining ensure secure drawing and data management

Welcoming Inquiries from Distributors and OEM Partners

• No affiliation restrictions with specific users or designated purchasing channels
• Reduced sales and administrative costs are reflected in competitive pricing

We Welcome Custom Development and Design Requests

• We operate a dedicated lab for vision system experiments.
• We explore LED lighting beyond machine vision applications.

Custom Optical Design

• Leimac's proprietary optical design developed by engineers with advanced technical expertise

What is an Lighting?

A semiconductor device that emits light by running current

Features of LEDs

LED lifetime

Unlike incandescent bulbs, LEDs do not burn out due to a broken filament.
However, over time, the LED chip and the resin encapsulating it degrade, reducing light transmittance and causing a gradual decrease in luminous flux.Therefore, the lifetime of an LED is not defined as the time until it stops emitting light, but rather the time it takes for its brightness to drop to 70% of its initial value at an ambient temperature of 25℃.

This definition also applies to LED lighting products that incorporate LED chips.
However, the point at which a lighting product is considered “no longer usable” depends on the user’s required brightness level.For users who rely on the full initial brightness, even a 20% drop in output may mean the product has reached the end of its useful life.

Conversely, for users whose needs are met with only 50% of the lighting’s original output, the product may remain usable even after significant light degradation.In such cases, the user can compensate for the reduction by increasing the current from the controller to maintain necessary brightness.
Accordingly,we cannot uniformly define the lifetime of an LED lighting product.

LED Brightness

The human eye is most sensitive to green light (around 555 nm),
so green LEDs are well-suited for applications involving visual inspection.However, in machine vision, a light source that appears bright to the human eye may still result in a dark image when captured by a camera.
This is because each camera has its own peak sensitivity characteristics, which must be considered in relation to the wavelength of the illumination used.If the LED's wavelength closely matches the camera's peak sensitivity, the captured image will appear brighter.

Considerations for Selecting LED Lighting

Contrast between wavelength and workpiece

While ordinary lighting is used to simply make things brighter, in image processing, lighting plays a crucial role in emphasizing the inspection targets and capturing optimal images.The relationship between illumination wavelength and workpiece color, based on typical complementary color principles, is shown in the table below.

The above tables show a typical example and may not apply in all cases, depending on the characteristics of the workpiece (such as reflectance, transmittance, and absorption), as well as the compatibility with the camera and optical system.

Color reflection and absorption

Selection by Lighting Type

Selecting Controllers

Pulse Width Modulation (PWM) Method

A method that rapidly switches the LEDs ON/OFF under constant voltage and controls brightness by changing the ON/OFF ratio.

Voltage Dimming Method

A method that varies the voltage applied to the LEDs to control brightness.

Effective Lighting Tips

Avoid Use in High-Temperature Environments

LEDs have characteristics in which self-generated heat can cause brightness reduction and accelerate degradation
The typical lifespan of LED elements is approximately 40,000 hours (TYP), but continuous use in high-temperature conditions may accelerate degradation and reduce brightness.

Improve Heat Dissipation

Place the Lighting Close to the Target Object

Lighting Simulation

We provide optimal lighting proposals using simplified optical simulations—without the need to build physical prototypes.

• Custom and new development
• 3D-designed lighting, etc.

We offer custom solutions starting from a single unit.

Quality Assurance of Lighting Equipment

Warranty period

Warranty period：2 years after factory shipment*

In the event that an Leimac product malfunctions during the period stipulated above or in the event that the illumination output of lighting equipment decreases to 50%, Leimac shall repair the product free of charge or provide a replacement product as stipulated under Scope of Warranty. Consult Leimac and present the product in question.
*Warranty period for time to half-illumination-output shall be one year from factory shipment.

Warranty Period for Smart Vision Lights Products

Warranty period：Up to 10 years from the date of shipment by our company.*

If any malfunction occurs in Smart Vision Lights products purchased from us, we will provide free repair or replacement in accordance with the terms outlined below and in the “Warranty Coverage” section. Please contact us with the relevant product.

Customers who register their product with Smart Vision Lights are eligible for a 10-year warranty from our shipment date. If the product is not registered, the warranty period will be 5 years from our shipment date. For cases in which the optical output of the lighting unit drops by 50%, the warranty period is 3 years from our shipment date. For the T-slot portion of the product housing, the warranty period is also 3 years from our shipment date.

Please click here to register your Smart Vision Lights product.

Scope of Warranty

When used in accordance with the instruction manual under usage conditions specified by Leimac, in the event of a product malfunction within the warranty period, Leimac shall repair the product free of charge or provide a replacement product. However, even if a claim is made within the warranty period, you will be charged in the following situations:

• Malfunction or damage resulting from connecting the product to lighting equipment or a controller made by another company
• Malfunction or damage resulting from incorrect usage or from improper repair, alteration, or disassembly
  Malfunction or damage resulting from vibration, dropping, or other shock or from inappropriate handling
• Malfunction or damage resulting from the occurrence of fire, pollution, riot, or a similar phenomenon or from external causes such as earthquake, lightning, flood, or other natural disasters or from use in a unique environment (abnormal voltage, high humidity, and the like).
• Other cases in which liability is not attributable to Leimac.

Limitation of Liability

Secondary disasters (damage to equipment, lost opportunity, lost profit, and similar) incurred by the customer as a result of the malfunction of or damage to an Leimac product and any damages whatsoever shall not be subject to compensation.

Limitations of Warranty

This product warranty promises the aforementioned warranty details under the clearly indicated warranty period and conditions.
Accordingly, it does not undertake any other guarantees, whether express or implied.
Leimac products are primarily designed for use with image processing and industrial inspection applications.
This warranty shall not apply to use under circumstances like those outlined below:

• Use in applications that may result in personal injury (nuclear power controls, railways, aviation, safety equipment) and particularly in applications that require reliability
• Use in medical equipment that directly affects human life
• Use in applications that have the potential to significantly affect property

Operating Environments of Lighting Equipment

Lighting

Controllers

Cables

The above values are typical values and do not apply to all products. Read the instruction manual carefully before use.

Usage Precautions of Lighting Equipment

• Do not look directly at the light source.
• Do not disassemble or remodel the light or controller unit.
• Do not operate the product with wet hands.
• Do not use products that are not suitable for an environment with high temperature, high humidity and splash.
• Do not install the product in a dusty place.
• Take appropriate measures for heat dissipation, cooling, and similar.
• Install the lighting near the object as close as possible.
• Try to use the light at minimum output or in flashing mode as much as possible.
• Do not use a controller unit made by another company to power Leimac lighting products.
• Make sure that all lighting and controller units comply with input voltage requirements.
• Make sure that the controller capacity is larger than the lighting power consumption.
• Do not use AC input from a controller that is used for motive power, solenoid valves, or similar applications.
• Be careful of surges and electrical noise in the vicinity of the installation site.
• Lighting and controller units may generate electrical noise.
• Be sure to ground controller units that have a grounding terminal.
• Be sure to follow the instructions on the screw depth instruction label when installing a lighting unit.

Maintenance and Care

• Always turn off the power and allow the unit to cool completely before performing any maintenance. There is a risk of electric shock or burns.
• Do not use volatile solvents such as thinner or benzine for cleaning. Doing so may cause discoloration or damage.
• Wipe the exterior of the unit with a soft, dry cloth. The light-emitting surface is especially delicate; use an air blower or a soft cloth such as a lens-cleaning cloth.
• If the unit is heavily soiled, wipe it gently with a soft cloth dampened with diluted neutral detergent. Then finish by wiping with another soft cloth moistened with clean water to remove any remaining detergent residue.

Environment of Lighting Equipment

Environmental policy

We contribute to the society as a research and development company, and construct an environment management system based on the policy below.

• As the origin of “Manufacturing,” we engage in the continuous improvment of minimizing the burden on the global environment, the social responsibilities.
• As creative challenge to the “Manufacturing,” we are trying to produce products that enrich the global environment.
• We comply the legal regulation and agreement with region.
• We engage in the issues below as an environmental preservation activity.
  • Improvement of environmental problems, and development and recommended sales of long-life products.
  • Reduction of waste
  • Enhancing energy‐saving awareness and its implementation
  • We contribute to “our customers’ ” reduction of waste and saving energy, including packing and distribution.
• In order to implement and continue this environmental policy, we engage in making all employees, suppliers and contractors aware of the policy. Moreover, we make it public and raise their awareness of environment.

Revised RoHS directive compliant (2011/65/EU+(EU)2015/863)

As a restriction on the use of chemical substances related to the supply of environmentally friendly products, the revised RoHS Directive(2011/65/EU),
which originally restricted the use of 6 hazardous substances such as lead, has been expanded to restrict 10 substances by adding 4 phthalates stipulated in Addendum (EU)2015/863.
(The LED lighting, controllers, etc., of our company, Leimac, are compliant as of July 22, 2021 as they are categorized as monitoring and control equipment.)

Most of our products have met the threshold of the original 6 hazardous substances in the revised RoHS Directive from April 2007, and have begun to meet the 10-substance threshold, which includes the 4 additional substances, as of July 2021(exemptions apply) for most standard products listed in the catalog.
For the revised RoHS directive compliance status of each product, please confirm the RoHS2 marking in the standards section on the individual product page on our website or contact one of our sales representatives.

RoHS2 Mark

Corresponding to Chinese version RoHS Directive.

Chinese version RoHS Directive means “Measures for the Administration of the Restricted Use of the Hazardous Substances Contained in Electrical and Electronic Products”, implemented in China on May 1st of 2007.
As well as RoHS Directive implemented in Europe, Chinese version RoHS Directive restricts the following 6 substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE).
The directive obligates manufacturers and traders in China to show content information of the 6 substances in electronic information products.
Content information of our products differs depending on products. Please check hazardous substance usage restriction marks in each page about products.

Restriction mark of use of harmful substance

Compliance with the U.S. Toxic Substance Control Act (TSCA)

Our measures against products containing substances subject to the U.S. Toxic Substance Control Act (TSCA) is as follows.

In some of our products, we have confirmed the use of controllers equipped with film capacitors with sealing resins containing PIP (3:1).

Depending on the manufacturer and the model, the corresponding time to enact the change is scheduled from October 2021 to January 2023.
Therefore, we plan to complete supporting all models by January 2024 while switching production sequentially based on product arrival and our company’s in-house inventory.
Furthermore, there are no changes in our product models, specifications, safety standards, etc., from changes in film capacitors due to differences in sealing resins.

If the product is to be distributed to regions where the U.S. Toxic Substances Control Act (TSCA) is applicable before the switch, please refer to the Notification PDF and take note of our notice to downstream suppliers “Regulation Section §751.407, PIP(3:1)(e)”. Please contact our sales department individually for the switching status of our products.

About standard

About CE Marking

Lighting Equipment is included in the scope of application for the IEC 62471 standard, “Standard Regarding Photobiological Safety of Lamps and Lamp Systems”, (Published by the International Electrotechnical Commission in 2006). Photobiological risk can be divided into the following risk groups based on the degree of photobiological damage caused.

About UKCA Marking

The UKCA (UK Conformity Assessed) Mark is a certification mark of conformity with safety standards applicable to goods placed on the market in the island of Great Britain (England, Wales and Scotland).
Any product bearing the UKCA Mark conforms to the technical requirements that must be met (mandatory requirements) and the conformity assessment process and standards criteria that can be used to demonstrate conformity.

About UL

We have judged that our Lighting Equipment and extension cables are not covered by US safety standard, the Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use-UL61010-1, 6.3.1 a, due to their use of voltage under DC 48V.
Although we have Lighting Equipment controllers that meet the US safety standard, we do not plan on acquiring the certification as it is not mandatory.

About Electrical Appliance and Material Safety Law (PSE)

Products with the PSE mark conform to the technical standards specified by paragraph (1) of the Ministerial Ordinance of Specified Electrical Appliances (DC Controller Units)

About China Compulsory Certificate (CCC)