Optical arrangement and confocal chromatic distance sensor

An optical arrangement comprising:

• a first lens, having a second lens, having an optical fiber holder for connecting an optical fiber, and having a housing inside which the first lens, the second lens, and the optical fiber holder are arranged,
• wherein a first spacer element is arranged between the first lens and the second lens to define a first axial distance between the first lens and the second lens measured along an optical axis within the housing,
• wherein a second spacer element is arranged between the second lens and the optical fiber holder in order to define a second axial distance between the second lens and the optical fiber holder measured along the optical axis within the housing,
• wherein a first resilient compensating element is provided between a first axial stop connected to the housing and the first lens on a side of the first lens facing away from the second lens, wherein the first compensating element is resiliently elastically pretensioned between the first axial stop and the first lens,
• wherein a second resilient compensating element is provided between a second axial stop connected to the housing and the optical fiber holder on a side of the optical fiber holder facing away from the second lens, wherein the second compensating element is resiliently elastically pretensioned between the second axial stop and the optical fiber holder,
• wherein the first spacer element comprises a material having a lower thermal expansion coefficient than a material of the housing, and
• wherein the second spacer element comprises a material having a lower thermal expansion coefficient than the material of the housing.