Multi-aperture imaging device (11; 150; 180; 1000; 2000; 4000; 8000) comprising: at least one image sensor; and an array (14; 14') of juxtaposed optical channels (16a-d; 16N), wherein each optical channel comprises optics (64a-d) for projecting at least one partial area (74a-d) of an object area on an image sensor area (58a-d) of the image sensor, the array (14; 14') comprising: a housing including a wall structure (1004; 1004a-b) facing or facing away from the image sensor, through which the optical channels pass, and a sidewall structure (1006; 1006a-b) arranged on the wall structure (1004; 1004a-b), wherein the wall structure (1004; 1004a-b) or the sidewall structure (1006; 1006a-b) is formed including glass, ceramic, glass ceramic or a crystalline material, wherein the optics (64a-d) of the optical channels (16a-d; 16N) are arranged in the housing, and wherein the wall structure (1004; 1004a-b) is connected to optics (64a-d) of the optical channels (16a-d; 16N) and fixes the optics (64a-d) with respect to one another, characterized at least in that the wall structure fixes the optics (64a-d) with respect to one another, wherein the optics (64a-d) are arranged in a contact-less manner to an adjacent partition wall structure or laterally supported by a soft material; and wherein the optics (64a-d) deform during a thermally induced deformation along an optical length of the optical channel and along a direction perpendicular to the optical length of the optical channel, wherein each optical channel (16a-d; 16N) is affected to a small degree or is not affected by the deformation in the direction perpendicular to the optical length of an adjacent optical channel (16a-d; 16N); or wherein one of the optics (64a-d) includes a plurality of serially arranged optics elements which are mechanically connected to one another, such that the optics are arranged along a direction perpendicular to an optical path (17a-d) through the optics (64a-d) and along a line-extension direction of the array (14; 14') in an area of at least 50 % of a length of the optical channel (16a-d; 16N) along an optical axis of the same in a contactless manner with respect to other mechanical elements. at least one image sensor; and an array (14; 14') of juxtaposed optical channels (16a-d; 16N), wherein each optical channel comprises optics (64a-d) for projecting at least one partial area (74a-d) of an object area on an image sensor area (58a-d) of the image sensor, the array (14; 14') comprising: a housing including a wall structure (1004; 1004a-b) facing or facing away from the image sensor, through which the optical channels pass, and a sidewall structure (1006; 1006a-b) arranged on the wall structure (1004; 1004a-b), wherein the wall structure (1004; 1004a-b) or the sidewall structure (1006; 1006a-b) is formed including glass, ceramic, glass ceramic or a crystalline material, wherein the optics (64a-d) of the optical channels (16a-d; 16N) are arranged in the housing, and wherein the wall structure (1004; 1004a-b) is connected to optics (64a-d) of the optical channels (16a-d; 16N) and fixes the optics (64a-d) with respect to one another, characterized at least in that the wall structure fixes the optics (64a-d) with respect to one another, wherein the optics (64a-d) are arranged in a contact-less manner to an adjacent partition wall structure or laterally supported by a soft material; and wherein the optics (64a-d) deform during a thermally induced deformation along an optical length of the optical channel and along a direction perpendicular to the optical length of the optical channel, wherein each optical channel (16a-d; 16N) is affected to a small degree or is not affected by the deformation in the direction perpendicular to the optical length of an adjacent optical channel (16a-d; 16N); or wherein one of the optics (64a-d) includes a plurality of serially arranged optics elements which are mechanically connected to one another, such that the optics are arranged along a direction perpendicular to an optical path (17a-d) through the optics (64a-d) and along a line-extension direction of the array (14; 14') in an area of at least 50 % of a length of the optical channel (16a-d; 16N) along an optical axis of the same in a contactless manner with respect to other mechanical elements.