Optical measurement device, load handling apparatus, method for protecting optical measurement device and method for updating load handling apparatus

1. A load handling apparatus comprising:

an optical measurement device comprising:

a permeable surface configured to communicate light to and from the optical measurement device; and

a hydrophilic coating arranged on the permeable surface, wherein the coating is a nanotechnical product comprising nanostructured TiO 2 in anatase form,

wherein the optical measurement device is configured to transmit light through the permeable surface and receive reflections of the transmitted light through the permeable surface,

a drive system; and

a controller operatively connected to the drive system and the optical measurement device, and configured to:

obtain measurement information from the optical measurement device; and

drive the load handling apparatus on the basis of the measurement information.

2. The load handling apparatus according to claim 1 , wherein the hydrophilic coating is arranged to decompose organic molecules using photocatalysis.

3. The load handling apparatus according to claim 1 , wherein the optical measurement device is a laser scanner configured to measure distances in directions of the light communicated through the permeable surface.

4. The load handling apparatus according to claim 2 , wherein the optical measurement device is a laser scanner configured to measure distances in directions of the light communicated through the permeable surface.

5. The load handling apparatus according to claim 1 , wherein in at least one position of the load handling apparatus, the permeable surface of the optical measurement device is exposed to rain from the sky and rain spatter from a load handled by the load handling apparatus or rain spatter from a loading member.

6. The load handling apparatus according to claim 1 , wherein the optical measurement device is installed to a loading member of the load handling apparatus.

7. The load handling apparatus according to claim 1 , wherein the load handling apparatus is a gantry crane, bridge crane, straddle carrier, fork lift or a reach stacker.

8. A method for protecting an optical measurement device in a load handling apparatus comprising a permeable surface for communicating light to and from the optical measurement device, the method comprising:

applying a hydrophilic coating to the permeable surface of the optical measurement device, wherein the coating is a nanotechnical product comprising nanostructured TiO 2 in anatase form;

transmitting light via the optical measurement device through the permeable surface; and

receiving reflections of the transmitted light at the optical measurement device through the permeable surface,

wherein the hydrophilic coating is arranged to decompose organic molecules using photocatalysis,

wherein the nanostructured TiO 2 includes nanotubes and nanoribbons,

wherein the load handling apparatus further includes:

a drive system; and

a controller operatively connected to the drive system and the optical measurement device, and

wherein the controller obtains measurement information from the optical measurement device and drives the load handling apparatus on the basis of the measurement information.

9. The method according to claim 8 , wherein the hydrophilic coating is arranged to decompose organic molecules using photocatalysis.

10. The method according to claim 8 , wherein the optical measurement device is a laser scanner configured to measure distances in directions of the light communicated through the permeable surface.

11. The method according to claim 8 , wherein the optical measurement device is installed to measure distances upwards, downwards and/or in a horizontal direction, from the optical measurement device.

12. The method according to claim 10 , wherein the optical measurement device is installed to measure distances upwards, downwards and/or in a horizontal direction, from the optical measurement device.