Q. Is it possible to recover and use the lost polarization in our optical system?
A. Yes. Our PCS technology is designed for this type of recovery.
Q. What happens to the output angle and etendue?
A. In the direction of diffraction, it will double the output angle and double the etendue of the system.
Q. Can I put the PCS after the image is formed?
A. No. This is because the PCS changes ray angles and will introduce aberrations and significant scatter to the output.
Q. Can I use the PCS with an existing design?
A. This is possible, but if the increase in angle is not accounted for in the optical design, the performance will be significantly lower than expected. In general, we recommend that the PCS is designed at the same time as the rest of the optics to ensure excellent performance.
Q. Can you reduce the weight of my large optical elements?
A. Yes. Our optics are thin films that have very little weight. Even large size films are a fraction of the weight and thickness of traditional optical elements.
Q. Since GPLs naturally have negative color dispersion, is there a way to correct for that?
A. Yes. With multiple GPLs and polarization management, we do make a color corrected GPL (CC-GPL). Please see our technology page on this for additional information.
Q. Can you simplify my complicated lens system?
A. Yes. By using a combination of GPLs and CC-GPLs and potentially some standard lenses, you can correct aberrations, get rid of expensive optical materials and make the lens system shorter in length.
Q. Can you make a thin-film with a difficult phase profile without expensive and limited diamond turning fabrication?
A. Yes. This would just be a custom GPL solution.
Q. Can you combine multiple lenses and optics in a single element?
A. Yes. Because our films are flat, we can fabricate and laminate them together in a single monolithic component.
Q. Can you correct for optical aberrations in a set of lenses?
A. Yes. Our GPLs can be customized to add aberrations for correction.
Q. What type of diffusion patterns can you implement?
A. Typically, the diffusion pattern is circular, but we can do rectangular and other arbitrary patterns.
Q. Do your diffusers require an airgap like other engineered diffusers?
A. No. Since our diffuser films are flat, they can be laminate to other films and between multiple elements/films.
Q. Can you maintain polarization when passing through your diffuser?
A. Yes. As long as the input polarization is not random it will remain polarized. Depending on the design, the polarization may be flipped.
Q. Does your super achromatic quarter wave plate (SA-QWP) really out perform other polymer QWPs?
A. Yes. Our standard SA-QWP operates over 410nm – 700nm and from 0 to 45 angle of incidence. Both the wavelength and AOI can be increased with a custom design.
Q. Are your QWPs true zero order?
A. Yes. They do operate like other zero order waveplates.
Q. Can you actually make an optical element that could act one way in one wavelength band, and act very differently at another wavelength band?
A. Yes. By tuning the different layers of the MTR design we can make a waveplate that has different retardances based on wavelength.
Q. Can your MTRs be patterned so that we can precisely control the retardation with a specific profile?
A. Yes. Our technology can be patterned such that different regions have different orientations. This patterning can be discreet or continuously varying depending on your requirements.
Q. What is the smallest grating period you can make?
A. We are currently able to fabricate down to 300nm. We are working to reduce this further.
Q. Will your technology work with other waveguide technologies, such as surface relief?
A. Yes. We have successfully combined our in-coupling BPGs and a surface relief out-coupling grating.
Q. What is the field of view (FOV) that is possible with BPGs?
A. We can achieve up to 40 in the direction of diffraction. The diagonal FOV is significantly larger.
Q. What charges are possible for your vortex retarders?
A. We can easily implement any charge from 2 to 32.
General Technology Questions
Q. Can you create other output patterns, such as a target or beam splitter?
A. Yes. We have the capability of fabricating any hologram in a custom diffractive optic.
Q. Can you make your films switchable?
A. Yes. There are multiple ways to make our films switchable. The method used depends on the optical requirements and the design.
Q. What is the typical thickness of your films?
A. Most films are 2-5um thick. Some films in the IR may be 5-10um.
Q. What temperatures can your films withstand?
A. Our films routinely work with consumer electronics temperature ranges. -10°C – 85°C.
Q. What is the maximum temperature your films can withstand?
A. Typically, this is around 100°, but they can handle higher temperatures depending on the amount of time they are at that elevated temperature.
Q. Can your films be AR coated?
A. Yes. We have successfully coated our films with a low temperature AR coating.
Q. Can your films be protected?
A. Yes. We can either endcap them with a substrate (glass or plastic film) or we can add a protective layer of material to prevent damage.
Q. Does part performance vary with change in temperature?
A. In general, no. Our films are fabricated with liquid crystal polymers and the birefringence of the LCs are quite stable with respect to temperature.
Q. What is the maximum part size you can make?
A. Our current equipment can make parts as large as 300mm x 300mm. And this is scalable to larger sizes.
Q. What is your production capacity?
A. With our new manufacturing lines, we can do anything from tens of parts in an R&D project to millions of parts per year in mass production.