Lenses
Achromatic Doublets
Achromatic doublet lenses ("achromat") are designed to eliminate chromatic and spherical aberrations inherent in singlet lenses. When used on-axis, an achromatic lens focuses an parallel input beam to a perfect "point", imited only by the effects of diffraction. This performance can be achieved over a broadband of wavelength. Achromatic lenses can be used to collimate and focus laser beams. They can also be used for high-quality imaging on-axis. However, the off-axis performance is significantly.
Specifications:
Focal Length Tolerance : ± 2%
Diameter Tolerance : +0/-0.05 to +0/-0.25 mm
Centration: 3 minutes (depending on diameter and configuration)
Center Thickness Tolerance : ± 0.20 mm (± 0.30 mm for triplets)
Surface Quality: 40/20 - 80/50 (per customer requirements)
Coatings: Standard or custom coatings are available.
Aspherics
Manufacture aspherical lenses from most available optical glass materials .
We have competitive pricing for custom aspherical lenses in prototype or large quantities.
Specifications:
Focal Length Tolerance : ± 2% , ± 3 %
Diameter Tolerance : +0/-0.50 mm
Centration: 6 minutes (depending on diameter and configuration)
Center Thickness Tolerance : ± 0.25 mm
Surface Quality: 80/50 , 120/80
Coatings: Single, Multi-layer and V-coat AR coatings.
Ball Lenses
Ball lenses are used for light coupling in fiber-optic applications. The choice of the optical ball lens depends on various parameters such as the diameter of the laser beam, the numerical aperture of the fiber and the wavelength of the light.
We put out these ball lenses from optical glasses to provide a high coupling efficiency when used with fiber optics. They are simple to use as they can be put in contact with the end of the fiber.
Specifications:
Material: BK7, LaSFN9 glass
Sphericity: /4 at 633nm
Surface Quality: 20-10
Diameter: 1m
Coating (optional): R<1.5% avg per surface, 400-700nm at 0angle of incidence
CCD Lenses
Made to customer specifications.
Cylindrical Lenses
Cylindrical lenses are available in either plano-concave or plano-convex configurations. Plano-concave lenses have a negative focal length and are used for image reduction or to spread light. Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.
Specifications:
Focal Length: ± 2%
Dimensions Tolerance: +0/- 0.20 mm
Centration: 3 minutes
Center Thickness: ± 0.20 mm
Surface Quality: 40/20 - 80/50
Coatings: Single, Multi-layer and V-coat AR coatings
Fused Silica and Fused Quartz
Transmission Range: 185-2500nm
Refractive Index: 1.4858@308nm
Low Thermal Expansion Coefficient:
0.54 x 10-6K
Better performance from UV to IR spectrum. Also, it is the best choice for resistance thermal application.
Specifications:
Dimensions Tolerance : +0/-0.10 mm
Flatness: 1/10 waves - 3 waves
Thickness Tolerance : ± 0.10 mm
Surface Quality: 20/10 - 80/50 (per customer requirements)
Materials: Crown glass, Quartz, Fused Silica, Sapphire and Flint glass, etc.
Meniscus Glass Lenses
We can manufacture a wide range of diameters and focal lengths, 1 mm to 300 mm.
Lenses can be shaped to your particular requirement.
We can provide them mounted or unmounted with standard or custom metal mounts.
- Plano-convex lenses
- Bi-concave lenses
- Bi-convex lenses
- Bi-concave lenses
- Meniscus (positive or negative)
Specifications:
Focal Length Tolerance : ± 2%
Diameter Tolerance : +0/-0. 05 to + 0/-0.5 mm
Centration: 3-5 minutes (depending on diameter and configuration)
Center Thickness Tolerance : ± 0.10 mm
Surface Quality: 40/ 20 , 60/40, 80 /50 (per customer requirements) Coatings: Standard or custom coatings
Plano-Concave Glass Lenses
A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, concentrating or diverging the beam. A simple lens is a lens consisting of a single optical element.
Specifications:
Focal Length Tolerance : ± 2%
Diameter Tolerance : +0/-0. 05 to + 0/-0.5 mm
Centration: 3-5 minutes (depending on diameter and configuration)
Center Thickness Tolerance : ± 0.10 mm
Surface Quality: 40/ 20 , 60/40, 80 /50 (per customer requirements)
Coatings: Standard or custom coatings
Plano-Convex Lenses
This kind of lens has positive focal lengths. They work best when producing real images at near infinite conjugates or where one of the conjugates is virtual. Our optical designers are always available to assist with your special needs and our production in China is ready to meet your quantity requirements.
Specifications:
Dimensions Tolerance +0.0-0.15mm
Paraxial Focal Length 2%
Centration 3 arc minutes
Clear Aperture >90%
Surface Quality 60-40scratch and dig
Bevel 0.25mm 45B
Rod Lenses
Rod Lenses are polished on the circumference and ground on both ends. Optical performance is similar to a cylinder lens, made to customer specifications.
Sapphire Lenses
With >98% transmission with AR coatings on both sides @ 2.94 µm and 2.1 µm, Sapphire Lenses have surface figures to 1/8 wave, supplied to customers specifications.
Specifications:
Focal Length Tolerance : ± 2%
Diameter Tolerance : +0/-0. 05 to + 0/-0.5 mm
Centration: 3-5 minutes (depending on diameter and configuration)
Center Thickness Tolerance : ± 0.10 mm
Surface Quality: 40/ 20 , 60/40, 80 /50 (per customer requirements)
Coatings: Standard or custom coatings
Triplet Achromats
We can supply air spaced or cemented triplets to customer specifications. Please enquire about our capabilities to manufacture these components.
Prisms
Amici Roof Prisms
Reflecting prism used to deviate a beam of light by 90° whilst simultaneously inverting the image. It is commonly used in the eyepieces of telescopes as an image erecting system. Made to customer specifications.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Anamorphic Prisms
Anamorphic Prism Pairs are used to transform elliptical laser diode beams into almost circular beams. The prisms are set near Brewster's angle and with AR coating to the angle of the index SF11 glass, an average throughput of 95% can be achieved.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Brewster Prisms
The Brewster prisms are used for dispersion and 90° deviation of linearly polarized light, with no reflection losses. Made to customer specifications
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Corner cube
Corner Cube Prisms are designed to reflect any ray or beam entering the prism face, regardless of the orientation of the prism, back onto itself. A mirror will only do that at the normal angle of incidence. As a result, corner cubes are ideal where precision alignment is difficult or time-consuming. Made to customer specifications
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Dove Prisms
Reflective prism which is used to invert an image. Dove prisms are shaped from a truncated right-angle prism. A beam of light entering one of the sloped faces of the prism undergoes total internal reflection from the inside of the longest (bottom) face and emerges from the opposite sloped face. Images passing through the prism are flipped, and because only one reflection takes place, the image's handedness is changed to the opposite sense.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Equilateral Prisms
Refraction by an Equilateral Prism - Visible white light passing through an equilateral prism undergoes a phenomenon known as dispersion, which is manifested by wavelength-dependent refraction of the light waves. Made to customer specifications.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Littrow Prisms
Prisms are used to disperse light into its component spectrum. Coated prisms are used to deviate the line of sight by 60°.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Penta Prisms
A pentaprism is a five-sided reflecting prism used to deviate a beam of light by 90°. The beam reflects inside the prism twice, allowing the transmission of an image through a right angle without inverting it (that is, without changing the image's handedness) as an ordinary right-angle prism would. Made to customer specifications
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Rhomboid Prisms
Rhomboid Prism is a simple means of displacing the line of sight without affecting the orientation of the image or deviating the line of sight.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Right Angle Prisms
The right-angle prism possesses the simple geometry of a 45-degree right triangle, and is one of the most commonly used prisms for redirecting light and rotating images. Made to customer specifications.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Wedge Prisms
Made to customer specifications.
Specifications:
Dimensions Tolerance : ± 0.15 mm
Surface Flatness: 1 wave
Angles: < 3 minutes ~ 5 seconds
Surface Quality: 40/20, 60/40 , 80/50
Windows
Glass Windows
Windows made to customers specifications.
Most shapes and sizes made to order.
Specifications:
Dimensions Tolerance : +0/-0.10 mm
Flatness: 1/10 waves - 3 waves
Thickness Tolerance : ± 0.10 mm
Surface Quality: 20/10 - 80/50 (per customer requirements)
Materials: Crown glass, Quartz, Fused Silica, Sapphire and Flint glass, etc.
Laser windows
Good performance over visible and near IR spectrum for most application.
Material BK7
Transmission Range: 330-2100nm
Refractive Index: 1.5164 @588nm
Sapphire Windows
Suit for scratch resistance application with better transmission over the wide range spectrum. It can be made much thinner.
Transmission Range: 180-4500nm
Refractive Index: 1.755@1000nm
Strong Hardness
Scratch / Dig Specifications
Purpose:
This document defines glass surface quality on optical components per MIL-O-13830.
Definitions:
SCRATCH: Any marking or tearing of the glass surface.
SLEEK SCRATCH: A hairline scratch.
CRUSH or RUB SCRATCH: A surface scratch or a series of small scratches.
DIG: A small rough spot on the glass surface similar to pits in appearance. A bubble is considered a dig.
Procedure:
Surface quality is to be specified by a number such as 60/40. The first digits relate to the maximum width allowance of a scratch as measured in microns. The next digits indicate to maximum diameter allowance for a dig in hundredths of a millimeter. Thus, as can be seen from the table below, a surface quality callout of 60/40 would permit a scratch width of .0024 inches and a dig diameter of .0158 inches. The size of a defect is to be measured through the use of an optical comparator.
| Scratch or Dig Number | Maximum Scratch Width | Maximum Dig or Bubble Diametre | Dig or Bubble Seperation Distance | |||
| mm | inch | mm | inch | mm | inch | |
| 120 | 0.12 | 0.0047 | 1.20 | 0.0473 | 20 | 0.787 |
| 80 | 0.08 | 0.0031 | 0.80 | 0.0315 | 20 | 0.787 |
| 60 | 0.06 | 0.0024 | 0.60 | 0.0236 | 20 | 0.787 |
| 50 | 0.05 | 0.0020 | 0.50 | 0.0196 | 20 | 0.787 |
| 40 | 0.04 | 0.0016 | 0.40 | 0.0158 | 20 | 0.787 |
| 30 | 0.03 | 0.0012 | 0.30 | 0.0118 | 20 | 0.787 |
| 20 | 0.02 | 0.0008 | 0.20 | 0.0079 | 20 | 0.787 |
| 15 | 0.015 | 0.0006 | 0.15 | 0.0059 | 20 | 0.787 |
| 10 | 0.010 | 0.0004 | 0.10 | 0.0039 | 1 | 0.040 |
| 05 | 0.005 | 0.0002 | 0.05 | 0.0020 | 1 | 0.040 |
| 03 | 0.003 | 0.00012 | 0.03 | 0.0012 | 1 | 0.040 |
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