High-resolution compact snapshot hyperspectral imaging devices and methods for producing such devices are described. One example lightguide array device includes a plurality of lightguides configured as a three-dimensional structure having an input and an output end. Each lightguide extends from the input end to the output end and has an input facet that receives light and an output facet. The input facets of the lightguides form a first two-dimensional array at the input end of the three-dimensional structure with no spacing or a first spacing between each of the lightguides. The output facets of the lightguides form a second two-dimensional array at the output end of the three-dimensional structure with a second spacing between each of the lightguides that is larger than the spacing of the first three-dimensional array. At least one of the input end or the output end is shaped as a curved surface.

Systems and methods for determining one or more properties of a sample are disclosed. The systems and methods disclosed can be capable of measuring along multiple locations and can reimage and resolve multiple optical paths within the sample. The system can be configured with one-layer or two-layers of optics suitable for a compact system. The optics can be simplified to reduce the number and complexity of the coated optical surfaces, etalon effects, manufacturing tolerance stack-up problems, and interference-based spectroscopic errors. The size, number, and placement of the optics can enable multiple simultaneous or non-simultaneous measurements at various locations across and within the sample. Moreover, the systems can be configured with an optical spacer window located between the sample and the optics, and methods to account for changes in optical paths due to inclusion of the optical spacer window are disclosed.