Device for mounting optical element and sample processing instrument

1 . A device for mounting an optical element, wherein the device comprises:

a frame;

a mount fitted in the frame in a translatable but non-rotatable manner and having a mounting portion for accommodating an optical element; and

an adjusting nut attached to the frame in a rotatable but non-translatable manner,

wherein the adjusting nut has a screw and a head located at an end of the screw for operation, and the mount has a threaded portion engaged threadedly with the screw, such that when the adjusting nut is rotated, the mount translates relative to the frame.

2 . The device according to claim 1 , wherein the frame has a V-shaped slot, and the mount has a V-shaped portion fitted in the V-shaped slot.

3 . The device according to claim 2 , wherein the threaded portion is a threaded hole with an internal thread, and the screw has an external thread engaged with the internal thread.

4 . The device according to claim 3 , wherein the mounting portion is located on a side of the V-shaped portion, and the threaded hole is provided in the V-shaped portion.

5 . The device according to claim 1 , further comprising a fixing plate and a retaining ring, wherein the fixing plate is fixedly attached to the frame and has a hole for receiving the screw of the adjusting nut, and wherein the retaining ring is located on a side of the fixing plate opposite to the head of the adjusting nut and is configured to limit translation of the adjusting nut relative to the frame.

6 . The device according to claim 5 , wherein the fixing plate is fixed to the frame via a fastener.

7 . The device according to claim 1 further comprising a locking device, wherein the locking device is configured to apply a pre-pressure to the mount when the mount translates and to lock the mount relative to the frame when the mount is in place.

8 . The device according to claim 7 , wherein the locking device comprises a threaded member and a biasing member, the biasing member is located between the threaded member and the mount, and the threaded member is engaged with a threaded hole in the frame.

9 . The device according to claim 8 , wherein the threaded member has a tapered rounded tip, the mount is provided with a recess for receiving the rounded tip, and the recess extends in a direction of translation of the mount.

10 . The device according to claim 7 , wherein the device comprises two locking devices arranged symmetrically about a plane passing through a central axis of the screw.

11 . The device according to claim 1 , wherein the head of the adjusting nut has operational features for a tool to operate.

12 . The device according to claim 1 , wherein the mounting portion comprises a first stepped through hole, and the frame is provided with a second stepped through hole for accommodating another optical element, when the mount is fitted into the frame, a central axis of the first stepped through hole coincides with a central axis of the second stepped through hole, and the mount can translate along the central axis of the first stepped through hole.

13 . A sample processing instrument comprising the device for mounting an optical element according to claim 1 , wherein the optical element is a lens or lens group for adjusting a light source for optical detection or analysis.