43results about How to "Improve spectroscopic effect" patented technology

The invention discloses a spectrometer coaxial optical system adopting a combination of two volume holographic gratings and a prism for light splitting, relates to the field of spectrometer light splitting systems and solves the problem that an existing off-axis-type grating dispersion spectrum system is large in size, difficult to mount and adjust and low in stability. The spectrometer coaxial optical system comprises an imaging lens, a slit, a collimating lens, a light splitting element, a converging lens and a CCD (charge coupled device) detector, the slit is positioned at an image focal point of the imaging lens, the light splitting element comprises the volume holographic gratings which are completely identical and the prism, the volume holographic gratings are glued on two sides of the prism respectively, the imaging lens images object light in the slit, the collimating lens collimates the object light to be parallel light, and the parallel light is refracted at an interface of the first volume holographic grating and the prism to enter the prism after diffraction light splitting through the first volume holographic grating, totally reflected on the undersurface of the prism to reach an interface of the prism and the second volume holographic grating and converged on the CCD detector through the converging lens after diffraction light splitting through the second volume holographic grating. The spectrometer coaxial optical system is compact in structure, simple to mount and adjust and high in light energy utilization rate.

The invention discloses a CMOS / MEMS compatible spectroscopic gas sensor which performs qualitative and quantitative analysis by using near-infrared transmission spectra of gases to be measured. The sensor consists of an infrared light source, a photon crystal dispersing prism, an infrared photoelectric detection array and the like, judges the type of gases by adopting the reference structure and analyzing the position of the characteristic line and determines concentration of gases by corresponding absorbance. The invention overcomes the deficiencies that the traditional MEMS gas sensor has complex processes and short service life, has the high sensitivity detectivity and can be manufactured compatible with CMOS processes. The CMOS / MEMS compatible spectroscopic gas sensor can be produced in large scale with reduced cost and analyze the gas concentration gradient through the integrated array.

Provided is a photosynthetic organism cultivation device, comprising at least one support frame (2) and a plurality of carriers (4). The carriers (4) are spaced apart and are capable of adsorbing photosynthetic organism cells, a nutrient solution and a photosynthetic organism cultivation solution. Each carrier (4) hangs on the support frame (2), and is used for culturing a photosynthetic organism. The spacing and angles of the at least two spaced apart carriers are adjustable, enabling the photosynthetic organism on the carriers to receive sufficient light.

The invention relates to a Hadamard transform imaging spectrometer, which overcomes the defects that after-treatment workload is large, the enhancement function on a certain characteristic spectral coverage cannot be realized, the coding precision is low, the volume is big and the requirements on processing and debugging are high in the prior art. The Hadamard transform imaging spectrometer comprises a preposed imaging system, a first collimating lens, a light-splitting device, a first convergent lens, a digital micromirror device, a second collimating lens, a light-converging device, a secondconvergent lens and an image surface detector; the preposed imaging system comprises a preposed imaging lens; the first collimating lens, the light-splitting device, the first convergent lens and thedigital micromirror device form a light-splitting modulation system; the second collimating lens, the light-converging device, the second convergent lens and the image surface detector form a light-converging imaging system; and the composition of the first collimating lens is the same as that of the first convergent lens, and the composition of the second collimating lens is the same as that ofthe second convergent lens. The Hadamard transform imaging spectrometer has the advantages of small volume, high coding precision and the like.

The invention provides a splitting film, a backlight module and a display device and relates to the field of display techniques. The splitting performance of the splitting film can be improved. The splitting film comprises a film material body, a plurality of splitting microstructures and a plurality of angle adjusting microstructures, wherein the periodically arranged splitting microstructures are arranged on the light incidence face of the film material body and are of long-strip-shaped structures extending in the longitudinal direction, the surfaces of the splitting microstructures are folded faces formed by connecting a plurality of long-strip-shaped planes extending in the longitudinal direction, the connecting line of two adjacent long-strip-shaped planes in each folded face is in the longitudinal direction, the splitting microstructures enable incident rays to be refracted for the first time, and the incident rays are preliminarily split into a plurality of beams of rays forming different included angles with the vertical line of the film material body; the periodically arranged angle adjusting microstructures are arranged on the light emitting face of the film material body and are of long-strip-shaped structures extending in the longitudinal direction, the angle adjusting microstructures enable the multiple beams of rays split preliminarily to be refracted for the second time, and the included angle formed between the emitting rays and the vertical line of the film material body is increased or reduced.