shanghai revamp

Promotion: Summer Free Shipping Within U.S

Shanghai Optics — Thu, 26 Jun 2025 14:48:00 +0000

Shanghai Optics is pleased to announce a free shipping promotion for our U.S. customers during July and August 2025!

Complimentary shipping applies to one shipment per purchase order.
For split shipments, free shipping applies only to the first shipment.

If you have any questions or need more information, feel free to contact us!

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Important Announcement: Germanium Projects

Shanghai Optics — Tue, 08 Aug 2023 15:10:08 +0000

We are pleased to inform you that we are fully equipped to manage all your Germanium projects, including lenses, windows, domes, and various other components. We extend our gratitude for your ongoing support and confidence in Shanghai Optics and are eager to deliver outstanding solutions for all your Germanium project requirements.

Please contact us if you have any questions or would like to discuss your project.

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Monolithic dual-wedge prism-based spectroscopic single-molecule localization microscopy

Shanghai Optics — Thu, 20 Jul 2023 19:11:47 +0000

A pair of wedge prisms (one with strong chromatic dispersion (WP1, N-SF11 glass, refractive index n = 1.791 at 550 nm and another with weak chromatic dispersion (WP2, N-LAF21 glass, refractive index n = 1.792 at 550 nm)) designed and manufactured by Shanghai Optics were utilized in a monolithic dual-wedge prism-based spectroscopic single-molecule localization microscopy system.

Figure 1:

3D DWP sSMLM design.

(a) Schematic of the 3D sSMLM system with the DWP unit; (b) Zemax design of the DWP unit optical assembly. (c) Picture of the DWP unit optical assembly, which consists of a customized DWP pair and a commercially available lateral beam splitter. BS: cube beam splitter; RP: right-angle prism; WP: wedge prism; AR: anti-reflection coating; OL: objective lens; BPF: band-pass filter; DF: dichroic filter; LPF: long-pass filter; TL: tube lens; M: mirror; DWP unit: dual-wedge prism unit; IP: image plane; C: camera plane.

To learn more and read the full article published in the journal, Nanophotonics click here.

Citations: Song, Ki-Hee, Brenner, Benjamin, Yeo, Wei-Hong, Kweon, Junghun, Cai, Zhen, Zhang, Yang, Lee, Youngseop, Yang, Xusan, Sun, Cheng and Zhang, Hao F.. “Monolithic dual-wedge prism-based spectroscopic single-molecule localization microscopy” Nanophotonics, vol. 11, no. 8, 2022, pp. 1527-1535. https://doi.org/10.1515/nanoph-2021-0541

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Free Shipping this Summer!

Shanghai Optics — Wed, 05 Jul 2023 19:14:56 +0000

Customers who place orders during the months of July & August 2023 will receive free shipping – U.S. customers only.

Contact your sales representative for details: 732-321-6915.

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Custom Dual Amici Prism from Shanghai Optics Used in Single Aperture High Throughput Imaging System for Compressive Spectral Image Fusion

Shanghai Optics — Tue, 20 Jun 2023 18:27:18 +0000

A custom dual Amici prism designed and manufactured by Shanghai Optics has been utilized in a single aperture high throughput imaging system for compressive spectral image fusion.

Below is an excerpt from the article, “Compressive spectral image fusion via a single aperture high throughput imaging system.”

To read the entire article, please visit: https://www.nature.com/articles/s41598-021-89788-y.

To test the proposed imaging framework, we built a proof-of-concept optical prototype, shown in Fig. 1c and detailed in Section S2 of the supplementary material, which employs an objective lens (Tamron, 8mm 1.1”) paired with a relay lens (Thorlabs, MAP10100100-A) to image the target scene onto a DMD (Texas Instruments, DLI4130VIS-7XGA) with a micro-mirror size of $13.68 μ m "> 13.68 μ m$ , that encodes the incoming light. Both imaging arms use 4F-relay systems built using two lenses (Thorlabs, AC254-100-A-ML) to transmit the encoded light through the dispersive elements placed at the Fourier plane. The MS imaging arm employs a dual Amici prism (Shanghai Optics, custom made) with central wavelength 550 nm, whereas the HS arm uses a transmission diffraction grating (Thorlabs, GT50-03, 300 grooves/mm, 17.5 $\circ "> \circ$ groove angle). Regarding the image sensors, both arms employ equal monochrome sensors (AVT, Stingray F-145B, working at 14 bits) with $1392 \times 1040 "> 1392 \times 1040$ pixels and a pixel size of $6.45 \times 6.45 μ m "> 6.45 \times 6.45 μ m$ . To emulate a low-resolution sensor, $2 \times 2 "> 2 \times 2$ pixel binning was performed in the sensor sitting at the end of the HS arm, thus attaining a $696 \times 520 "> 696 \times 520$ image sensor with a pixel size of $12.9 \times 12.9 μ m "> 12.9 \times 12.9 μ m$ .

Citation: Rueda-Chacon, H., Rojas, F. & Arguello, H. Compressive spectral image fusion via a single aperture high throughput imaging system. Sci Rep 11, 10311 (2021). https://doi.org/10.1038/s41598-021-89788-y

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Lesson 20 – Fisheye, Telecentric, and SWIR Lenses

Shanghai Optics — Mon, 24 Oct 2022 18:23:25 +0000

In this final post on types of lenses, we will be investigating fisheye, telecentric, and short-wave infrared (SWIR) lenses. The field of view for lenses is normally less than 60 degrees. The field of view for fisheye lenses, however, can go up to 175 degrees, which is very close to 180 degrees. Fisheye lenses are modeled after the actual eyes of a fish, and hence also where they get their name. If one looks at the eyes of the fish, they tend to bulge out, which is related to why the outermost fisheye lens is huge. Such a wide field of view is useful in security cameras where seeing the entire environment is needed. Fish probably have eyes with a wide field of view, so they are not eaten!

Telecentric lenses, contrary to the name, are not the lenses used in telescopes (in the “Focal Length and Applications of Lenses” post, we talked about how telescope lenses are composed of multiple different lenses). They are also not used in taking pictures. Rather, their application is in areas where the image size remains the same regardless of distance. Thus, the length of the pencil viewed through a telecentric lens will remain the same as the length of pencil in reality.

SWIR lenses have a cool application in being used in heat-detection cameras. This application results from the special property of infrared glass. Since regular lens material have a low transmission for infrared light (see “How Does Light Travel? Part I” on transmission), infrared glass is used to increase the transmission. SWIR lenses are used for light ranging from 0.9 to 1.7 um. As heat is a form of infrared light, SWIR lenses are used in appliances detecting heat.

As this is the 20th and final post, I want to thank all my readers for reading my blog posts. I also want to thank Glenn Brunelli, our Marketing Director for working with me to get the blog ready for publication every two weeks – it’s been a great experience! While this is where my lessons in optics come to an end, these lessons barely scratch the surface of optics (ha – get it?). While I hope this blog serves as a good introduction to optics, the more you get into the field, the more you realize there is a lot to learn! The Deep Dive into Optics blog will continue on with more advanced topics. The field of optics has so many applications in our lives, yet we may never realize it until we look at the image displayed from a fuzzy projector. Such is the behind-the-scenes importance of optics. May your study in light continue!

About Austin

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Lesson 19 – Projection and Zoom Lenses

Shanghai Optics — Tue, 11 Oct 2022 14:53:42 +0000

Projection lenses are another common application of optics. They differ from microscope lenses in that microscope lenses magnify what the human eye cannot see. Rather than zooming into an image, projection lenses enlarge the sample and PROJECT it. Just as with microscope objectives, there are certain design factors that must be taken into consideration when creating a projection lens. One of these factors is the conjugate distance which is the length between the sample and the image (calculated by sample – image distance). The projector at an IMAX movie theater would have a very different conjugate distance than a classroom projector!

Another factor to consider in designing is magnification. The magnification for a projection lens is calculated by dividing the image size by the sample size. Thus, the larger the image is “blown up”, the greater the magnification. The strength of the light source is also positively correlated with magnification- the higher the magnification, the more light is needed. And just like microscope objectives, the working distance is also taken into consideration when designing projection lenses. Focal length, field of view, and relative aperture are also key characteristics of projection lens design.

Zoom lenses have a unique characteristic where the focal length of the lens is adjustable in a range. Changing the focal length changes the field of view of the system. This is a useful property in capturing scenes at different distances and different ranges.

Next: TBD

About Austin

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Lesson 18 – Microscope Objectives

Shanghai Optics — Wed, 28 Sep 2022 14:21:24 +0000

Microscope objective lenses are a classic example of optics in our lives. The function of the microscope is to enlarge objects our eyes cannot see. Unlike telescopes which enlarge far away objects, the sample observed by the microscope is close to the lens. Microscopes also correct aberration, which otherwise would lead to blurry images. Achromatic (doublet) lenses only correct for aberration of two wavelengths of light whereas apochromatic (triplet) lenses correct for 3 or more wavelengths.

One of the factors that go into designing an objective lens is the magnification. The colored bands on the outside of the microscope indicate the magnification of the lens. The standard magnification bands are as follows: red band = 5x, yellow = 10x, green = 20x, blue = 40-60x, white = 100x. Thus, if a lens has a green and yellow band, the magnification would be 30x.

Another factor to consider in designing an objective lens is the working distance (WD). This is defined to be the distance from the front of the objective to the sample when in sharp focus. Working distance is related to the numerical aperture (NA) which is calculated by the formula NA = n * sin(θ_a), where n is the index of refraction. When in air, n = 1. To obtain a greater refractive index and increase the numerical aperture, sometimes the objective is immersed in a liquid such as oil or water. While aberration, magnification, working distance, and numerical aperture are not the only variables to consider when designing a microscope, they are key characteristics that one should look for.

Next: TBD

About Austin

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We’ll be at Photonics West 2023!

Shanghai Optics — Tue, 13 Sep 2022 15:00:16 +0000

Shanghai Optics will be at Photonics West in San Francisco: January 31 – February 2, 2023! Come visit our team @ booth #1465!

For more information, click here!

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Lesson 17 – Quantitative Descriptions of a Lens

Shanghai Optics — Mon, 29 Aug 2022 16:48:08 +0000

In theory, the entire lens would be up to the qualifications set by the customer. After all, if a customer ordered a 150mm lens, the whole 150mm lens should be up to specification… right? Wrong. This is because in the real world, nothing can be manufactured precisely as specified. While on paper the entire lens works, in reality, the edges of the lens are not to specifications. To account for this error, clear aperture is the area of the lens that is up to specification. Usually, it is written as a percentage of the lens (such as > 95%) or an amount such as 145mm.

Surface quality quantifies the irregularities of the lens surface. We do not want the lens surface to look like the surface of the moon with various spots and streaks and craters. To quantify the smoothness of the lens, scratch measures the size of streaks across a lens. The thicker the cut, the higher the scratch quantity. Similarly, the dig measures the size of spots or bubbles in the lens. The greater the crater or bubble, the higher the dig quantity. Normally, the scratch is greater than the dig.

Surface flatness measures how close the lens surface is to its specifications. The ideal measurement would be 0 which means the manufactured lens is exactly to specifications as the lens on paper. As with clear aperture however, nothing is perfect and thus the product will deviate from the plan. Surface flatness is measured at a certain wavelength in waves (λ) with values closer to 0 being the best and larger values having greater deviations. For example, λ/4 at 400nm would be better than λ/2 at 400nm.

Next: TBD

About Austin

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