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Photonchina has been focusing on dove prism manufacture for more than decades in order to meet demands of customers worldwide in applications ranging from image displaying to fiber communications.
Dove prism is a type of reflective prism which is used to invert an image. These 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.
If you look through the prism and rotate it around a longitudinal axis, the image rotates through twice the angle through which the dove prism itself rotates. For optimal performance, you may use dove prisms with collimated light. The top surface of each dove prism is ground and the longest length features an unbeveled sharp edge.
Dove Prisms are offered uncoated, with anti-reflection coated diagonal faces, or with aluminized diagonal faces. Aluminized dove prisms feature a protected aluminum coating with black Krylon paint on the diagonal faces and are ideal for displaced retroreflection. They provide a u-turn for incident laser beam light.

Beam Splitter:


The common Beam splitters are used to split or combine laser beam. We could make them as plate or cube, following is some information about our standard specs:



Standard plate size:
Size(mm) Narrow Band Broadband
Part No. Part No.
10x10x2 BSP1103 BSP1203
12.7x12.7x2 BSP1104 BSP1204
25.4x25.4x2 BSP1105 BSP1205
F25.4x2 BSP1106 BSP1206

Stand cube size:
Size(mm) Narrow Band Broadband
Part No. Part No.
3.2x3.2x3.2 BSC1101 BSC1201
5x5x5 BSC1102 BSC1202
10x10x10 BSC1103 BSC1203
12.7x12.7x12.7 BSC1104 BSC1204
15x15x15 BSC1105 BSC1205
20x20x20 BSC1106 BSC1206
25.4x25.4x25.4 BSC1107 BSC1207
Note: Different size are available upon request.

Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence, we usually use quartz or quartz+bk7. There are several kinds of waveplates, multi-order waveplate, zero order waveplate, true zero order waveplate and dual wavelength waveplate. Our standard size is dia10mm, 12.7mm, 15mm, 20mm, 25.4mm and 30mm. Of course, other size and coating are available upon request.

1mm

Window:
Windows are applied to isolate different physical environments while allowing light to passing through. We supply all kinds of windows, which are made from different materials such as bk7, fused silica and sapphire. Single layer or multiplayer anti-reflecting or high-reflecting coatings on optical windows are available upon customer's requirement.

Prism:
Prisms are blocks of optical material with flat polished sides arranged at precisely controlled angles to each other, which deflect, deviate and rotate beams of light as well as dispersing their wavelengths. We could provide many kinds of high precision prisms, including as follows:
Penta Prism
Beamsplitter Penta Prism
Dove Prism
Right-Angle Prism
BK7 Wedge
Fused Silica Wedge
Roof Prism
Corner Cube Retroreflector
Anamorphic Prism

According to different application, you could choose different prism. If you want know more about them, pls kindly refer to our website.



lens:

Lenses have many applications ranging from the simple collection of the scanning of laser beams to precise imaging and image transfer. We provide these lenses as follows for different application.

Plano Convex Lens
Plano Concave Lens
Double Convex Lens
Double Concave Lens
Achromatic Lens
Cylindrical Lens

According to different application, you could choose different lens with BK7 or fused silica material.

Mirror:
Dielectric Laser Mirror
Material: BK7 or UV grade Fused Silica
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: +/-0.2mm
Clear Aperture: >90%
Wedge: <1 arc minute
Surface Quality 60/40 scratch and dig
Coating Dielectric HR coating on one surface, R>99.5% for random polarization, rear surface uncoated
Damage Threshold: >10J/cm2, 20ns, 20Hz, 1064nm

Metal Coated Mirror
Material: BK7
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: +/-0.2mm
Clear Aperture: >90%
Flatness: ª-/10@632.8nm for flat mirror, ª-/4@632.8nm for
Spherical mirror
Wedge: <1 arc minute
Surface Quality 60/40 scratch and dig
Coating Metal coating on one surface, rear surface uncoated
Damage Threshold: >1J/cm2, 20ns, 20Hz, @1064nm

Protected Aluminum Coating: Ravg>87%@400-1200nm
Protected Silver Coating: Ravg>95%@400-12000nm
Protected Gold Coating: Ravg>98%@2000-12000nm

Part No. Coating Flatness Diameter(mm) Thickness(mm)
MAL0125 AL Protected ª-/5 25.4 3.0
MAL0025 AL Protected ª-/10 25.4 6.35
MAG0125 AG Protected ª-/5 25.4 3.0
MAG0025 AG Protected ª-/10 25.4 6.35
MAU0125 AU Protected ª-/5 25.4 3.0
MAU0025 AU Protected ª-/10 25.4 6.35

The 850nm bandpass filter is used in NIR imaging system to eliminate the influence of surrounding background light, including the visible and NIR light. This filter is to increase the signal/noise ratio of the imager.

The applications include video surveillance, visual telephone, visual doorbell, digital telescope and other imaging systems.
Specifications:
SubstrateFloat glass
Size2×2mm~81×81mm
Thickness0.4, 0.5, 0.7, 1.1mm
Surface Quality40/20, 60/40
Spectrum Characteristic400~800nm T<2%
835±10nm, 895±10nm T=50%
830870nm Tave>85% Tmin>80%
9501100 nm Tave<2%
(The final detailed specifications are customized or suggested by Lenoptec. )

All Optical filters include:
Acrylic Filter
Dichroic Filter
Beam Splitter
Reflective Coating
Interference Filter
Waterproof and dustproof coating
AR coating
UVIR Blocker
IR Cutoff Filter


Cartons

Angle of incidence---------0°
Substrate---------------------BK7, Float glass, B270, Borofloat33
Size-----------------------------Customized
Application--------------------For image sensor that only requires NIR light.
(The final detailed specifications are customized or suggested by Lenoptec. )

High visible light reflective mirror, also called Cold mirror, is designed to reflect the visible light at the reflectance of at least 90%, while pass the IR light at the transmission of at least 90%.

Commonly applied to biometric devices that the sensor only requires NIR light to form the image.

All Optical filters include:
Acrylic Filter
Dichroic Filter
Beam Splitter
Reflective Coating
Interference Filter
Waterproof and dustproof coating
AR coating
UV-IR Blocker
IR Cut-off Filter


Cartons

Plano-convex lens, aslo called positive lens, is used to converge incident light to a spot on the axis, at a certain distance behind the lens, which is knowed as focal length. It can form both real images and virtual images(for magnifier) on the two sides. The materials to make plano-convex lens can be BK7, Fused Cilica, sapphire and CaF2 etc., for different applications.This model are commonly applied in many devices including telescopes, collimators, magnifiers,optical transceivers, condensers and other optical display or imaging optical systems. AR/NIR or other coatings are available according to the applications.

Material-------------------Fused cilica, BK7 Grade A or equivalent optical glasses
Design Wavalength------546.1nm
Diameter Tolerance------í+0.1mm, í+0.15mm for Dia.í¦75mm
Paraxial Focus Length----í+2%
Centration----------------<3 arc minutes
Clear Aperture------------>85%
Surface Figure------------ª-/4 @632.8nm
Surface Quality-----------60-40 scratch and dig
Coatings-------------------Antireflection coatings or NIR coatings
Bevel-----------------------A slight protective bevel, such as 0.25mmí-45íp
(For different applications, there are various choices in the specifications, which must be determined according to usersí» specific requirements.)

Products include:
Achromatic lens
Meniscus Lens
Double-concave Lens
Plano-concave Lens
Double-convex Lens
Plano-convex Lens


Cartons

Semiconductor Laser Filter, applied to blue and green semiconductor laser, to cut off the 808nm and 1064nm laser, while to pass the blue and green laser.

Substrate---------D263T/B270/BK7 or customized
Thickness---------0.3~1.1mm
Surface Quality---40/20, 60/40
Square Size------(3~15)×(3~15)mm
Round Size-------φ3~20mm
(The final detailed specifications are customized or suggested by Lenoptec.)

All Optical filters-Coatings include:
Acrylic Filters
Dichroic Filters
Beam Splitters
Reflective Coatings
Interference Filter
Waterproof and dustproof coatings
AR coatings
UV-IR Blockers
IR Cut-off Filters


Cartons

Achromatic lens is designed to limit the effects of chromatic and spherical abberation. It is corrected to bring two wavelengths(typically red and blue) into focus in the same plane. Achromatic lenses can be doublets or triplets, with two or three individual glasses cemented together.

Material--------------------BK7 Grade A or equivalent optical glasses
Design Wavalength-------480-650nm
Diameter Tolerance-------í+0.1mm, í+0.15mm for Dia.í¦75mm
Paraxial Focus Length-----í+2% @546.1nm
Centration-----------------<3 arc minutes
Clear Aperture------------->80%
Surface Figure-------------ª-/4 @632.8nm
Surface Quality------------60-40 scratches and dig
Coatings-------------------Antireflection coatings or NIR coatings
Bevel-----------------------A slight protective bevel
(For different applications, there are various choices in the specifications, which must be determined according to users specific requirements.)

Products include:
Achromatic lens
Meniscus Lens
Double-concave Lens
Plano-concave Lens
Double-convex Lens
Plano-convex Lens


Cartons

Refracto meter

United Photonics Technology, Inc.-ISO9001 Company



Mirror

Mirror is a reflecting surface that forms an image of an object when light rays coming from that object fall upon it. Usually mirrors are made of plate glass, one side of which is coated with metal or some special preparation to serve as a reflecting surface.
UPT offers dielectric coated mirrors and metal coated mirrors which are made of substrate such as Bk7, K9, Fused Silica, CaF2, Sapphire.

Specifications:
Material: BK7 Grade A Optical Glass or other material,
Typical Diameter (�¦mm)
8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8
Typical Thickness (mm)
2.0, 3.5, 5.0, 6.5
Diameter Tolerance (mm) +/-0.2 (General), +0.0/-0.02 (High Precision)
Thickness Tolerance (mm) ±0.2 (General), ±0.05 (High Precision)
Clear Aperture >80% (Small Size), >95% (Large Size)
Parallelism 6 min. (General), 3 sec. (High Precision)
Surface Quality 80/50 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm)
(General), /10 (High Precision)
Bevel (face width x 450)

Penta Prisms / Beamsplitter Penta Prism / Wedge / Right Angle Prisms / Corner Cube Retroreflectors / Anamorphic Prisms / Dove Prisms / Rhomboid Prisms /
Reflection Prism / Dispersion Prisms
Penta Prisms
Penta prism can deviate an incident beam without inverting or reversing to 90.The deviation angle of 90 is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces. It is commonly used in Plumb Level, Surveying, Alignment, Range finding and Optical Tooling. The reflecting surfaces of this Prism must be coated with a metallic or dielectric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum.

Specifications:
Material: BK7 Grade A Optical Glass
Dimension (mm): 2.5x2.5 ~ 100x100
Dimension Tolerance (mm): +/-0.2 (General), +/-0.05 (High Precision)
90 Deviation Tolerance: 1 arc min.(General),3 arc sec.(High Precision)
Angle Tolerance: 3 arc min. (General), 3 arc sec. (High Precision)
Surface Quality 80/50 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm) (General),/8 (High Precision)
Reflection: 90%@400-700nm

Note:
(1). Besides N-BK7 glass, other optical glass is available for custom-made Penta Prisms.
(2). Penta Prism at bigger size is available.
(3). Typical deviation tolerance is 1 minute, better precision such as 30 sec, 10 sec, 5 sec or 3 sec is available.
(4). Typical reflection is >90% by Al coating, other metal coating such as Ag, Cu, or High Reflection Dielectric Coating is available.
(5). Besides uncoating, Anti-Reflective(AR) coating is available upon request.

United photonics Technology

Corner Cube Retroreflectors


Corner Cube Prism is also called Retroreflector or Trihedral Prism. In the Corner Cube Prism, three reflecting surfaces are perpendicular to each other, like the side wall of the cube. The input surface is perpendicular to the cube diagonal. Disregarding the angle of incidence, the output beam is parallel to the input one, but it is of opposite direction. Inset of the several corner prisms, for better matching, their entrance-exit surface is often hexagonal. In case of this prism the phenomenon of full internal reflection occurs so it is not necessary, (however it is possible) to put mirror coating on the reflecting faces. Normally the reflection surfaces are Al reflection coating, and then covered with Cu and Black Painting.


Specifications:
Material:
BK7 Glass
Dimension Tolerance (mm):
0.2 (General), 0.1 (High Precision)
Deviation:
180 3 arc secs
Flatness (per 25mm 633nm):
2(General), 10 (High Precision)
Clear Aperture:
80% (small size),90%(large size)
Surface Quality:
60/40 (General), 10/5 (High Precision)
Bevel (mm):
0.1-0.5
Coating on input and output sides:

Note for corner cube retroreflector:
(1). Besides N-BK7, custom-made corner cube Prisms made of other optical materials are available.
(2). Corner Cube Prisms with lower deviation tolerance, such as 1, 30, or 10, are available.
(3). Corner Cube Prisms with better surface Quality (better than 40/20 or 20/10) are available.
(4). HR or Metal reflection coating(Al, Ag, Cu, etc.) on reflection surfaces is available.
(5). AR coating on input/output surface is available upon request.
(6).Custom-made non-standard Corner Cube Prisms at any other size are available upon request.