brdoptical

  Fused Silica Fused silica glass has a high transmittance from ultraviolet to near-infrared (185nm-00nm), and has a high transmittance in the deep ultraviolet region, making it widely used in ultraviolet lasers. In addition, compared with ordinary optical glass, fused quartz glass has better uniformity and lower thermal expansion coefficient, making it particularly suitable for applications in the ultraviolet to near-infrared wavelength range, high-power lasers and imaging fields. As one of  professional fused silica suppliers , Ecoptik can provide the best fused silica, if you want to know the fused silica price, please feel free to contact us.   Fused Silica Descriptions As a major optical product material, the main characteristics of fused silica are:   High purity and corrosion resistance   High softening temperature, strong heat resistance   Low thermal expansion coefficient, thermal shock resistance   From the ultraviolet band to the infrared ba...

  Front Surface Mirror   B rd optical  designs and manufactures custom optical mirrors  with high reflectance, which can double the output power of the laser; it is reflected by the first reflecting surface, the reflected image is not distorted, and there is no ghosting.   Description Of Front Surface Mirror   The Ecoptik mirror with high reflectance can double the output power of the laser; it is reflected by the first reflecting surface, the reflected image is not distorted, and there is no ghosting, which is the reflection of the front surface . If a common optical mirror is used as the second reflecting surface, not only the reflectance is low, but also the wavelength is not selective, and ghosting is likely to occur. With the front coated film mirror, the obtained image is not only high in brightness, but also accurate and unbiased, the picture quality is clearer and the color is more realistic. Front surface mirrors are widely used for optical high fi...

  The optical glass filter is an optical device used to select the desired radiation band. One of the common characteristics of filters is that there is no filter to make the image of celestial bodies brighter, because all filters absorb certain wavelengths, which makes the object darker. Its main feature is that the size can be made quite large. Thin optical filter film  generally transmit longer wavelengths and are mostly used as infrared filters. The latter is to form a certain thickness of high refractive index or low refractive index metal-dielectric-metal film or all-dielectric film alternately on a certain substrate by vacuum coating, forming a low-order, multi-stage tandem solid method Brie-Perot interferometer. The choice of film material, thickness and series connection mode is determined by the required center wavelength and transmission bandwidth. Ecoptik  as a professional optical filters ltd , offers different types of oem optical filters , such as optical c...

  Dielectric Mirror A dielectric mirror, also known as a Bragg mirror, is a type of mirror composed of multiple thin layers of dielectric material, typically deposited on a substrate of glass or some other optical material. By careful choice of the type and thickness of the dielectric layers, one can design an optical coating with specified reflectivity at different wavelengths of light. Dielectric mirrors are also used to produce ultra-high reflectivity mirrors: values of 99.999% or better over a narrow range of wavelengths can be produced using special techniques. Alternatively, they can be made to reflect a broad spectrum of light, such as the entire visible range or the spectrum of the Ti-sapphire laser. Mirrors of this type are very common in optics experiments, due to improved techniques that allow inexpensive manufacture of high-quality mirrors. Examples of their applications include laser cavity end mirrors, hot and cold mirrors, thin-film beamsplitters, and the coatings on...

  Dichroic filter A dichroic filter  is a very accurate color filter used to selectively pass light while reflecting other colors in a small range. In contrast, dichroic mirrors and dichroic mirrors tend to be characterized by the color of the light reflected, rather than the color that passes through.   Dichroic filters filter out light from white light sources to produce light that humans perceive as highly saturated in color.   Dichroic mirrors (often called cold mirrors) are often used behind light sources to reflect visible light forward while allowing invisible infrared light to emerge from the back of the fixture. This arrangement allows intense lighting with fewer illuminated objects. To this end, many quartz halogen lamps have an integrated dichroic reflector, originally designed for use in slide projectors to avoid melting slides, but are now widely used in indoor domestic and commercial lighting. Improves whiteness by removing excess red; however, if infra...

  Dashed Crosshairs In most rifle scopes, the hood is the point of aim in your field of vision. Also known as "cross lines", these are glass etched, or most commonly made of wire.   Description Of Dashed Crosshairs   The collimator is produced by a non-amplifying optical device, such as a reflector sight (commonly known as a reflection sight), which provides the observer with a mask image superimposed on the field of view, and a blind collimator sight for both eyes. Produces a collimating mask using a refractive or reflective optical collimator to produce a collimating image of a illumination or reflection mask. These types of attractions are used in surveying/triangulation equipment to help celestial telescopes aim and serve as attractions for guns. Historically, they have been used in larger military weapon systems that could provide power to illuminate them, and operators needed a wide field of vision to visually track and locate moving targets (i.e., weapons from the ...

  30° - 60° - 90° Littrow Dispersion Prisms In optics, a Littrow prism  or Littrow spectrometer or Littrow mirror is a reverse-reflecting dispersion prism arranged in such a way that the deviation of the incident beam entering at Brewster Angle is minimized, so the most dispersive Littrow prism is usually a 30°/60°/90° prism with a reflective film coated on the opposite surface of the 60° Angle. A typical Littrow prism is used at the end of a laser optical cavity to adjust the output frequency of the laser by changing the Angle of incidence.   Description Of 30° - 60° - 90° Littrow Dispersion Prisms   As shown in the figure, half a 60° dispersion prism is plated with a reflection film layer on the long side of the right Angle. Through reflection, half a prism acts as a 60° dispersion prism. The compact structure of the Littrow dispersion prism system. For some expensive prism materials such as quartz, using this prism can save material.   Both coated and uncoate...