Abstract: An optical system for a camera module includes: an image sensor; and an optical arrangement defining a beam path, the optical arrangement including a plurality of optical components including a first prism and an optical lens system, the plurality of optical components being arranged in the beam path in a sequential order relative to one another and in front of the image sensor, the sequential order being such that the first prism is positioned before the optical lens system, at least one of the plurality of optical components including at least one absorption filter.

Abstract: A laminate includes at least two sheets, one of the at least two sheets including a colored glass and another of the at least two sheets being a further sheet. The sheet including the colored glass in a wavelength range from 875 nm to 1600 nm has an internal transmittance at at least one wavelength of at least 75%. A connecting layer is disposed between the at least two sheets. The laminate has a thickness of at most 6 mm. The laminate in a wavelength range from 400 to 700 nm has an average transmittance ?avg,400 nm to 700 nm of less than 15% where ?avg,400 nm to 700 nm is defined as ? a ? v ? g , 400 ? nm - 700 ? nm = ? 400 ? nm 700 ? nm ? ? d ? ? 700 ? nm - 400 ? nm and/or at each wavelength has a spectral transmittance of less than 15%.

Abstract: A filter glass contains >1.1 to 6.0 wt % Li2O and at least one further component selected from Na2O and K2O, and includes the following composition (in wt % based on oxide): 55.0-75.0 P2O5, 4.1-8.0 Al2O3, 8.0-18.0 CuO, 0-<0.8 V2O5, ?2.0 SiO2, ?2.0 F, 0-11.0 Total R?O (R?=Mg, Ca, Sr, Ba, Zn), and 3.0-17.0 Total R2O (R=Li, Na, K).

Abstract: A glass includes: a plurality of components (in wt.-%) as follows: Component Proportion (% by weight) SiO2 50-80? Al2O3 0-10 B2O3 0-15 Li2O 0-20 Na2O 0-20 K2O 0-25 BaO 0-10 CaO 0-10 MgO 0-10 ZnO 0-10 La2O3 0-20 TiO2 0-5? Cl 0-3? MnO2 0.2-5.0? Cr2O3 0.05-3.0,? a sum of a plurality of proportions of Li2O, Na2O and K2O being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnO2 and Cr2O3 being at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO2 (in wt.-%) and Cr2O3 (in wt.-%) being in a range of from 1.5:1 to 12.5:1.

Abstract: A glass has a maximum crystallization rate (KGmax) of at most 0.20 ?m/min in a temperature range of 700° C. to 1250° C. and a hydrolytic stability according to a hydrolytic class 1 HGA1 according to ISO 720:1985. In the case of a sample thickness of 2 mm of the glass, a ratio of a minimum transmittance in a wavelength range of 850 nm to 950 nm to a maximum transmittance in a wavelength range of 250 nm to 700 nm is in a range of 1.9:1 to 15:1.

Abstract: A glass includes cations of the following components in the indicated amounts (molar proportion in cat.-%): 30-80 cat.-% silicon; 0-20 cat.-% boron; 0-2 cat.-% aluminum; 5-35 cat.-% sodium; 2-25 cat.-% potassium; 0-0.5 cat.-% nickel; 0-0.5 cat.-% chromium; and 0.03-0.5 cat.-% cobalt. A sum of the molar proportions of cations of sodium and potassium is in a range of from 15 to 50 cat.-%, a sum of the molar proportions of cations of nickel and chromium is in a range of from 0.1 to 0.5 cat.-%, and a ratio of the sum of the molar proportions of cations of sodium and potassium to the sum of the molar proportions of cations of nickel and chromium is in a range of from 70:1 to 200:1.

Abstract: A CuO-containing glass has a refractive index n of at least 1.7, a minimum absorption coefficient in a visible wavelength range from 380 nm to 780 nm is located between 450 nm and 550 nm, a difference of the absorption coefficient normalized to CuO weight percent at a wavelength of 700 nm and the minimum absorption coefficient normalized to CuO weight percent in the visible wavelength range from 380 nm to 780 nm is at least 10/cm. The glass includes the following components (in % by weight based on oxide): 0-70 wt-% La2O3, 0-70 wt-% Y2O3; 20-70 wt-% a sum of La2O3+Y2O3+RE2O3; 10-40 wt-% B2O3; 0-40 wt-% SiO2; 0-10 wt-% Nb2O5; 0-30 wt-% ZnO; 0-20 wt-% ZrO2; 0-20 wt-% Ta2O5and 0.1-10 wt-% CuO. RE2O3 includes Ce2O3, Pr2O3, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3, Lu2O3 and mixtures of two or more thereof.

Abstract: The invention generally concerns optical systems and, in particular, a method and device for joining at least one first and one second optical element to an optical composite element, as well as an optical composite element itself. In order to produce optical systems having at least two optical elements more easily and more economically, the invention provides a method for joining at least one first and one second optical element, in which the first optical element contains a first glass or a crystalline material, the second optical element contains a second glass, and the first glass or the crystalline material has a transformation temperature Tg1 or a melting temperature that differs from the transformation temperature Tg2 of the second glass, and at least the glass of the second optical element is heated and brought into contact with the glass or with the crystalline material of the first optical element.

Abstract: The invention relates to a process for forming an optical element. A forming tool is used having a plurality of molding or hot-embossing portions formed on a surface thereof for molding or hot-embossing optical structures onto a substrate. On the surface of the substrate there is formed at least one preformed portion. The substrate is heated to a temperature above a transition temperature and the forming tool and the substrate are pressed against each other for forming an optical element having a plurality of structures having an optical effect, wherein the shape of the structures having an optical effect is given by the respective associated molding or hot-embossing portion.

Abstract: The invention relates to a process for forming an optical element. A forming tool is used having a plurality of molding or hot-embossing portions formed on a surface thereof for molding or hot-embossing optical structures onto a substrate. On the surface of the substrate there is formed at least one preformed portion. The substrate is heated to a temperature above a transition temperature and the forming tool and the substrate are pressed against each other for forming an optical element having a plurality of structures having an optical effect, wherein the shape of the structures having an optical effect is given by the respective associated molding or hot-embossing portion.