480nm Longpass Filter,LP480nm Long-wavelength pass Filter for IPL devices, imaging, and spectroscopy

A 480nm Longpass Filter is an optical component that allows light with wavelengths longer than 480nm to pass through while cutting off light with shorter wavelengths.

480nm longpass filters find extensive application across various fields:

• Beauty and medical applications: serves as a core component in IPL beauty devices, filtering out harmful ultraviolet and short-wave visible light while transmitting the therapeutic 480–1200nm treatment light to achieve effects such as acne treatment, rosacea relief, and skin rejuvenation. It is also used in the biomedical field.
• Imaging and optical systems: functions as a UV cut-off filter, blocking ultraviolet light from entering camera sensors to prevent color cast or image blur, thereby optimizing color and contrast. It is also used in optical instruments such as facial recognition time attendance machines.
• Scientific research and inspection: applied in scenarios requiring precise optical band control, including multi-band inspection instruments and optical instrument testing equipment.
• Lighting and display: used in high-intensity flashlights, stage lighting color filters, and metal halide lamp heat shields to filter out unwanted short-wavelength light.

4.What is key parameter when choose for right Longpass Filter?

When selecting a Longpass Filter, normally the following factors need to be taken into consideration：

• Cut-Off Wavelength: it is one of the most important parameters, typically defined as the wavelength transmittance at 50% .
• Average or Peak transmittance: usually average transmittance ≥90%, higher transmittance e.g. 92% or 95% on average or specific single point need to definite and communicate with manufacturer, higher transmittance need to additional AR coating.
• Blocking rate: usually expressed in terms of optical density(OD), OD2-OD3 for standard and higher will be OD4-OD6 per requirement
• Angle of Incidence (AOI): AOI need to be consider as Interference Filter is angle sensitive, 0° AOI  by default, other AOI e.g. 30/45° need to be specified.
• Physical and environmental requirement: Substrate type, dimensions and thickness, surface quality, and environmental durability.

Related products:

LP500, 500nm Longpass Filter, OD2, dielectric coating, Long wavelengths pass Filter for machine vision

450nm Longpass Filter,LP450nm Long-wavelength pass Filter,Support customized

Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nano materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which coating layer is firm and has good tightness, and small bandwidth drift. Liyuan optoelectronics have been focus on optical coating for more than 17 years and offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass & Short Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.

other Longpass filters in stock from Liyuan Optoelectronics: LP430 LP500 LP560 LP600 LP650 LP800, etc.