Daheng Optics We Focus On OPTICS Daheng New Epoch Technology, Inc. www.cdhoptics.com

ADHC Daheng Opticsj Daheng New Epoch Technology, Inc. PREFACE Daheng Optics, based in Beijing, China, is a technical company specialized in optics. Its main business includes design and manufacture of optical components, modules, sub-systems assemblies and systems. Wealthy experiences in engineering and production, and service flexibility have been meeting our customer demands since 1987. Our company has grown steadily, up to now 150 people employed. Lead by an experienced technical team, most employees are skilled technicians for professionally dealing on fine optics, fine mechanics and special...

Coating Each lens surface in contact with air passes approximately 96% of the light due to reflection. Therefore, optical surfaces are commonly coated with a thin dielectric film to enhance the light transmission. Anti-reflection coating generally consists of 1 to 5 layers (in special cases up to 50 layers) and reduces reflection losses down to 0.2%. The coated films need to be specially adjusted to the required wavelengths and glass types. We offer anti-reflection coatings for wavelength range from 350nm to 1800nm, as well as band pass filters, mirror-and beam splitter coatings and Dichroic...

Cage System Optical Components P126-127 Cage System Standard Support Parts P129-132

Precision Screws/ Vernier Micrometers P273-274

Cylindrical Lenses Daheng New Epoch Technology,Inc. All units are in mm unless otherwise specified Crystal components

Lenses CyMndnca| Prisms Windows Crystal Lenses components Daheng Optics Lenses General Lens is an optical device with perfect or approximate axial symmetry which transmits and ref racts l ight, converging or diverging light. There are many forms of a lens or a lens system. A simple lens consists of a single optical element. A compound lens or a lens system has a series of simple lenses (elements) with a common axis in order to correct optical aberrations to improve performances or image quality, of which a simple single lens cannot offer. Classifications Single lenses are classified by the curvatures...

Daheng New Epoch Technology,Inc. LensesMaterials Most glass manufacturers can supply the same characteristics of materials under different trade names. They modify their material processes to achieve lead- and arseni c - f ree. Daheng Opt i c s utilizes many glass materials from main international manufacturers in our products. We source mainly in China with CDGM glasses which was founded in 1956 and is the largest production base of optical materials in China with its highest glass output in the world in recent years. With the constant efforts on development for new products and pursuing quality...

Lenses CyMndnca| Prisms Windows Crystal Lenses components Daheng Optics Lenses Principle of Anti-reflection Coating The transmission properties of an optical coating are dependent upon the wavelength of light being used, index of refraction of the substrate, index of refraction of the coating, the thickness of the coating, and the angle of the incident light. AR coating is designed to reduce back reflection at, say, air and glass interface caused by the difference of refractive index of the two media. The AR coating design is such that the relative phase shift between the beam reflected at the...

Cylindrical Lenses Lenses GCL-0101 BK7 Plano-Convex Lenses Prisms Windows Plano-convex lenses are mostly used for focusing parallel rays of light to a spot. The asymmetry of these lenses between the front and back surface minimizes spherical aberration effectively, particularly in the situations where the object and image are not at equal distance from the lens. The optimum case is where the object is placed at infinity (regarded as parallel rays entering lens) and the image is on the focus, which has infinite conjugate ratio, i.e. object distance/image distance. The curved surface of the lens...

Lenses CyMndnca| Prisms Windows Crystal Lenses components Daheng Optics All units are in mm unless otherwise specified

Daheng New Epoch Technology,Inc. Lenses Part No. f fb Tc Te Weight(g) , Cylindrical Crystal Lenses ' Prisms Windows Lenses components All units are in mm unless otherwise specified

Daheng Optics All units are in mm unless otherwise specified

Daheng New Epoch Technology,Inc. Lenses GCL-0108 Fused Silica Plano-Convex Lenses Fused Silica is the material used in UV region and imaging applications. It has high transmission from 200nm to 2.5pm. In addition, it also can be used in higher operating temperatures. Fused silica positive lenses are most commonly used for focusing parallel rays of light to a spot. f: focal length (object side) f': focal length (image side) fb: back focal length 0: lens diameter Tc: center thickness Te: edge thickness F,F': focal points H,H': principal points , Cylindrical Crystal Lenses ' Prisms Windows Lenses...

Daheng Optics All units are in mm unless otherwise specified

Daheng New Epoch Technology,Inc. Lenses GCL-0111 Calcium Fluoride Plano-Convex Lenses Calcium Fluoride has good thermal property due to its high transmission from 250nm to 7pm. It is commonly used in cooled thermal imaging systems or laser focusing. Plano-convex lenses are mostly used for focusing parallel rays of light to a spot. , Cylindrical Crystal Lenses ' Prisms Windows Lenses components • Focal Length (f'): • Diameter( 0 ) Tolerance: • Center Thickness(Tc): • Centration: • Form Error: • Irregularity of Fringes: • Surface Quality: • Clear Aperture: • Uncoated All units are in mm unless...

Daheng Optics Lenses GCL-0121 Zinc Selenide Plano-Convex Lenses Zinc Selenide has good thermal property due to its high transmission from 600nm to 16pm. It is commonly used in cooled thermal imaging systems or laser focusing. Plano-convex lenses are mostly used for focusing parallel rays of light to a real spot. As it is a relatively soft material, it is not recommended for use in harsh environments; handling, mounting and cleaning this lenses are with particular care. Te GCL-0121 f: focal length (object side) f': focal length (image side) fb: back focal length 0: lens diameter Tc: center thickness...