Neutral Density Filter

Neutral density filter, also known as neutral density attenuation film, dimming film, etc., is a filter that attenuates light intensity without changing the energy distribution of the spectrum. Neutral density filters can uniformly attenuate light intensity in a wide spectral range, and are coated with durable metal film layers on the surface. These filters can be applied in fields such as natural light and laser. Neutral density filters are divided into two types: absorption and reflection, which attenuate light in a wide spectral range and are particularly suitable for calibration of optical systems.

Neutral density attenuation filter is a professional manufacturer of neutral density filters that utilizes the absorption or reflection characteristics of materials to attenuate light intensity. After passing through the neutral density filter, light of different wavelengths is attenuated in the same proportion, so that optical components maintain approximately equal light energy transmittance in a wide wavelength range. Ruicheng Optoelectronics provides a variety of neutral density attenuation filters for different wavelengths from near ultraviolet to infrared.

Widely used in various optical systems, such as spectrophotometers, clinical biochemical analysis equipment, chemical detection equipment, optical instruments, medical equipment, semiconductor equipment, lighting fixtures, and photography Our company provides fixed density neutral attenuation filters with various transmittance ratios

Attention: The spectral range of the working band needs to be specified. Considering the characteristics of the coating material itself, it can only meet the basic consistency of the transmittance value (or optical density value) within a certain spectral range. In a wider spectral range or when the optical density value is large, there may be inclined changes. Therefore, please explain the working band range.

Ruicheng Optoelectronics mainly provides neutral density filters, including UV attenuation, visible light attenuation, near-infrared light attenuation, etc. Welcome to inquire!