Del Mar Photonics

Meniscus Lenses - Request a quote
These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.

Specifications Request a quote
Material: BK7 Grade A Optical Glass
Design Wavelength: 546.1nm
Design Index: 1.5183
Diameter Tolerance: +0.0, -0.15mm
Paraxial Focal Length: >2%
Centration: 3 arc minutes
Clear Aperture: >80%
Surface Figure: λ/4@632.8nm
Surface Quality: 60-40 scratch and dig
Protective Bevel

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Item# Type Material φ(mm) F(mm) R1 R2 Tc(mm) Te(mm) Fb(mm)
MNPL25100 Positive BK7 25.4 100.0 33.72 90.00 4.0 2.5 97.5
MNPL25125 Positive BK7 25.4 125.0 38.47 90.00 4.0 2.8 121.8
MNPL25150 Positive BK7 25.4 150.0 42.52 90.00 4.0 3.0 146.3
MNPL25175 Positive BK7 25.4 175.0 46.05 90.00 4.0 3.1 171.2
MNPL25200 Positive BK7 25.4 200.0 49.03 90.00 3.5 2.8 197.0
MNPL25250 Positive BK7 25.4 250.0 83.96 235.00 3.5 2.9 246.5
MNPL25300 Positive BK7 25.4 300.0 94.08 235.00 3.5 3.0 296.3
MNPL25500 Positive BK7 25.4 500.0 123.90 235.00 3.5 3.2 495.4
MNPL251000 Positive BK7 25.4 1000.0 278.34 600.0 3.5 3.3 993.7
MNPL252000 Positive BK7 25.4 2000.0 380.54 600.0 3.5 3.4 1990.2
MNPL254000 Positive BK7 25.4 4000.0 466.12 600.0 3.5 3.5 3984.5
MNNL25100 Negative BK7 25.4 100.0 90.0 32.59 3.0 4.5 -99.2
MNNL25125 Negative BK7 25.4 125.0 90.0 37.26 3.0 4.2 -123.7
MNNL25150 Negative BK7 25.4 150.0 90.0 41.42 3.0 4.0 -149.5
MNNL25175 Negative BK7 25.4 175.0 90.0 44.86 3.0 3.8 -174.6
MNNL25200 Negative BK7 25.4 200.0 90.0 47.84 3.0 3.7 -199.6
MNNL25250 Negative BK7 25.4 250.0 235.0 83.12 3.0 3.6 -248.7
MNNL25300 Negative BK7 25.4 300.0 235.0 93.13 3.0 3.5 -298.5
MNNL25500 Negative BK7 25.4 500.0 235.0 122.60 3.0 3.3 -496.9
MNNL251000 Negative BK7 25.4 1000.0 600.0 277.16 3.0 3.1 -995.3
MNNL252000 Negative BK7 25.4 2000.0 600.0 378.82 3.0 3.1 -1988.5
NL254000 Negative BK7 25.4 4000.0 600.0 464.01 3.0 3.0 -3973.1

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Del Mar Photonics featured components

Del Mar Photonics continuously expands its components portfolio.

Solar Prisms for Concentrating Photovoltaic Systems (CPV)
Solar cells made of compound semiconductors such as gallium arsenide are very expensive. Usually very small cells are installed and various means such as mirrors, lenses, prisms, etc..are used  to concentrate sunlight on the cells. Concentration photovoltaic technology (CPV) uses the solar radiation with an efficiency of 40%, double that of conventional solar cells
Del Mar Photonics design custom Concentrating Photovoltaic Systems (CPV) and supply variety of the optical components for CPV such as solar prisms shown in the picture.

hexagonal light pipes, optical rods

Axicon Lens
Axicon lens also known as conical lens or rotationally symmetric prism is widely used in different scientific research and application. Axicon can be used to convert a parallel laser beam into a ring, to create a non diffractive Bessel beam or to focus a parallel beam into long focus depth.
Del Mar Photonics supplies axicons with cone angles range from 130° to 179.5° for use with virtually any laser radiation. We manufacture and supply axicons made from BK7 glass, fused silica and other materials.

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Del Mar Photonics offers optical elements made of high quality synthetically grown Rutile Titanium Dioxide crystals. Rutile (TiO2) coupling prisms
Del Mar Photonics offers optical elements made of high quality synthetically grown Rutile Titanium Dioxide crystals. Rutile’s strong birefringency, wide transmission range and good mechanical properties make it suitable for fabrication of polarizing cubes, prisms and optical isolators. Boules having high optical transmission and homogeneity are grown by proprietary method. Typical boules have 10 - 15 mm in dia. and up to 25 mm length. Optical elements sizes - from 2 x 2 x 1 mm to 12.7 x 12.7 x 12.7 mm. Laser grade polish quality is available for finished elements. So far we the largest elements that we manufactured are 12 x15 x 5 mm, in which optical axis is parallel to 15 mm edge, 5 mm is along beam path, 12 x 15 mm faces polished 20/10 S/D, one wave flatness, parallelism < 3 arc.min. (better specs. available on request).

more details - download brochure -
request a quote

Sapphire components
Sapphire Circular Windows - Square & Rectangle - Rods
Sapphire & Ruby Rings - Sapphire & Ruby Balls - Sapphire & Ruby Nozzles
Sapphire Lenses - Ball & Seat - Special Products - Sapphire Vee & Cup Jewels
Sapphire Ceramics - Ceramic Sleeves - Ceramic Holes - Ceramic Rods
Sapphire & Ruby Orifices - Sapphire & Ruby Tubes - Sapphire Components
Sapphire Half Round Rod - Sapphire Windows - Rods & Tubes - Special Part
Sapphire Prism - Sapphire Chisel -
Sapphire Square Rod

Vacuum viewport

Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance. Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex. Standard Viewing diameters from .55" to 1.94 ".
Coating - a range of custom coatings can applied - which include
- Single QWOT
- Broad Band AR
- V coatings
- DLC (Diamond like coating)

more details - request a quote


NARROW-BAND HOLOGRAPHIC FILTERS are intended for suppression of powerful beams in research and in engineering, in particular, in laser spectroscopy, and also for protection from blinding and damaging by laser radiation various photo receiver devices and operator's eyes.

Unlike conventional interference filters, which are made by vacuum evaporation techniques, holographic filters are fabricated by recording interference patterns formed between two mutually coherent laser beams. Since all layers are recorded simultaneously within a thick stack, the optical density of the notch filter is high and its spectral bandwidth can be extremely narrow. Also, since the layering profile is sinusoidal instead of square wave, holographic notch filters are free from extraneous reflection bands and provide significantly higher laser damage thresholds.



Hydrogen Thyratrons are used in such devices as radars with different power levels, high-power pulsed technical, electrophysical, medical devices and lasers. Sophisticated design and high quality ceramic-metal envelope determines long lifetime and very accurate and reliable operation of hydrogen thyratrons under wide range of environmental conditions.
- radars
- pulsed  lasers power supplies
- medical apparatus
- electrophysical instrumentation

Triggered Three-Electrode Spark Gap Switches are ceramic-metal sealed off gas discharge trigatron-type devices with a co-axial trigger electrode. These Gas Discharge Tubes contain no mercury and, due to an advanced design, feature high reliability and a long lifetime being operating under wide range of environmental conditions.
- pulsed installation for processing materials
- installations with plasma focus
- pulse power supplies for lasers and other pulse equipment
- medical apparatus such as lithotriptors and defibrillators
- processing systems for petroleum wells


Trigger Transformers
Del Mar Photonics supply trigger transformers for triggered spark gaps and other applications. Contact us to today to discuss your application or requesta  quote.
Trigger Transformers are used to provide a fast high voltage pulse up to 30kV/µs and more. This high voltage pulse is applied to the trigger electrode to initiate switching action in the three-electrode spark gaps. Either positive or negative pulses can be obtained from all of the transformers.


We are looking forward to hear from you and help you with your optical and crystal components requirements. Need time to think about it? Drop us a line and we'll send you beautiful Del Mar Photonics mug (or two) so you can have a tea party with your colleagues and discuss your potential needs.


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Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics